ABSTRACT BOOK
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17 th INTERNATIONAL CONFERENCE<br />
ON PHOSPHORUS CHEMISTRY<br />
(ICPC-17)<br />
<strong>ABSTRACT</strong> <strong>BOOK</strong><br />
April 15 - 19, 2007<br />
Xiamen, China
Plenary Lecture<br />
INDEX<br />
PL-1 Structure and reactivity of inorganic phosphorus compounds Francois Mathey······································ 1<br />
PL-2 Phosphate - the cornerstone of life G. Micheal Blackburn············································································· 2<br />
Symposium 1<br />
PHOSPHORUS IN ORGANIC SYNTHESIS & STEREOCHEMISTRY; STRUCTURE AND<br />
REACTIVITY OF ORGANOPHOSPHORUS COMPOUNDS<br />
KL-1 Chemistry of carbaphosphatranes Takayuki Kawashima·············································································· 5<br />
KL-2 Development methods synthesis of polyheterophosphacyclanes with endocyclic P-C bond on the<br />
basis of functionalized alkylphosphonates(-phosphinates) M.A.Pudovik, N.A.Khailova,<br />
R.Kh.Bagautdinova, S.A.Terent’eva, L.K.Kibardina································································································· 6<br />
KL-3 Rings and cages derived from phospha-alkynes John Nixon ···································································· 7<br />
IL-1 Metal-mediated P-H addition as a powerful tool for the construction of C-P bonds: from<br />
academic interests to practical applications Li-Biao Han ········································································· 8<br />
IL-2 New synthetic approaches to the chiral cyclic and macrocyclic phosphine ligands O.G.Sinyashin,<br />
A.A.Karasik, E.Hey-Hawkins································································································································10<br />
O-1 Synthesis and properties of λ 5 -phosphinines and λ 5 -azaphosphinines Aleksandr N.Kostyuk,<br />
Yurii V.Svyashchenko, Dmitrii M.Volochnyuk, Dmitrii A.Sibgatulin, Aleksandr M.Pinchuk·······································12<br />
O-2 The synthesis and spectroscopic properties of spiro-ansa-spiro phosphazenes Amgalan Natsagdorj,<br />
Selen Bilge, Semsay Demiriz, Zeynel Kilic·············································································································13<br />
O-3 Acetylenephosphonates: reactions with nucleophiles B.I. Ionin, A.V. Dogadina, A.V. Aleksandrova<br />
N.G. Didkovskii ···················································································································································14<br />
O-4 New insights in P-nucleophile addıtıons onto unsaturated imino derivatıves for the synthesıs of<br />
P-analogues of glutamıc acid Christian V. Stevens, Kristof Moonen, Ellen Van Meenen ·························15<br />
O-5 A facile and highly efficient method for α-amino phosphonates via three-component reactions<br />
from aryl azides catalyzed by iron-iodine in the absence of solvent You Huang, Yaqin Yu,<br />
Tanglin Liu, Dexin Feng, Ruyu Chen ····················································································································16<br />
O-6 Reaction mechanism studies of solvolytic displacement of chloride from phosphorus Dennis N. Kevill,<br />
Han Joong Koh, Suk Jin Kang ······························································································································17<br />
O-7 The new tipe of calix[4]resorcines bearing phosphonates and phosphonium fragments at the<br />
lower rim E.L. Gavrilova, A.A. Naumova, N.I. Shatalova, A.R. Burilov, M.A. Pudovik, E.A. Krasil’nikova,<br />
A.I. Konovalov·····················································································································································18<br />
O-8 Microbial resolution of racemic phosphonates derivatives with one or two stereogenic centres<br />
Ewa Żymańczyk-Duda, Małgorzata Brzezińska-Rodak, Magdalena Klimek-Ochab, Renata Kuriata, Marta Miszuk,<br />
Paweł Kafarski, Barbara Lejczak··························································································································19<br />
I
O-9 Advantages of organophosphorus synthesis in ionic liquids:“Green” approaches to useful<br />
phosphorus substituted building-blocks I. L. Odinets, E.V. Matveeva, E. V.Sharova, O. I.Artyushin,<br />
V.A.Kozlov, D.V. Vorob’eva, S. N. Osipov, T. A. Mastryukova, G.-V. Röschenthaler ················································20<br />
O-10 Synthesis and chemical properties of benzo[e]-1,2-oxaphosphorinine derivatives – P-analogues of<br />
coumarines E.N.Varaksina, D.A.Tatarinov, K.Yu.Cherkin, V.F.Мironov, A.I.Konovalov ··································21<br />
O-11 The reaction of 1,2-naphthoquinones with some P(III) derivatives – a versatile sythetic<br />
approach to potentially useful naphthoquinones and dihydroxynaphthale-nes containing<br />
phosphorus–carbon bond A.V.Bogdanov, V.F.Мironov, N.R.Khasiyatullina, D.B.Krivolapov ···················22<br />
O-12 Ylides and carbenes. The first carbene catalyzed reaction Shevchenko I.V., Rogalyov A.E.,<br />
Poliakov D.V., Röschenthaler G.-V. ······················································································································23<br />
O-13 Synthesis, optical properties and reactivities of a dibenzophosphaborin and its derivatives<br />
Junji Kobayashi, Tomohiro Agou, and Takayuki Kawashima··················································································24<br />
O-14 Phosphinous acid-boranes:an emerging class of organophosphorus reagent K. Michal Pietrusiewicz,<br />
Marek Stankevič ··················································································································································25<br />
O-15 Synthesis of new functionalized phosphorus substituted derivatives of 2,6-di-tert-butyl-4methylphenol<br />
A.A. Prishchenko, M.V. Livantsov, O.P. Novikova, L.I. Livantsova, E.R. Milaeva·························26<br />
O-16 Microbial desymmetrization of racemic mixture of (1-hydroxyphenylmethyl)phenylphosphinate<br />
ethyl ester via oxidation of one optical isomer Magdalena Klimek-Ochab, Ewa Żymańczyk-Duda,<br />
Małgorzata Brzezińska-Rodak, Paweł Kafarski and Barbara Lejczak······································································27<br />
O-18 Guanidinophosphazenes: design and synthesis of a novel family of uncharged organic super<br />
bases Alexander A. Kolomeitsev, Ilmar A. Koppel, Toomas Rodima, Jan Barten, Enno Lork,<br />
Gerd-Volker Röschenthaler, Ivari Kaljurand, Agnes Kütt, Ivar Koppel, Vahur Mäemets, Ivo Leito····························28<br />
O-19 Preparation and characterization of novel room temperature ionic liquids based on quaternary<br />
phosphonium cations on quaternary phosphonium cations Katsuhiko Tsunashima, Masashi Sugiya ···29<br />
O-20 Investigating the michaelis-becker reaction in phosphonium and imidazolium ionic liquids<br />
Laura K. Byington Congiardo, Ahn Vu, Erika Shaffer, W. David Stegbauer, Robert Hartsock, D. Andrew Knight···30<br />
O-21 A new useful synthetic pathway to trifluoromethyl phosphates O. A. Shyshkov, A.A. Kolomeitsev<br />
G.-V. Röschenthaler·············································································································································31<br />
O-22 New methods, and strategies for asymmetric synthesis of organophosphorus compounds<br />
Kolodiazhnyi O.I., Guliayko, I.V, Gryshkun E.V., Kolodiazhna, A.O., Nesterov V.V., Kachkovskyi G. O. ···················32<br />
O-23 Imidoyl chlorides: new promising building blocks in synthesis of α-aminophosphoryl compounds<br />
P. P. Onys’ko, Yu. V. Rassukana, A. A. Sinitsa·······································································································33<br />
O-24 Kinetics and mechanism of the oxidation of lower oxyacids of phosphorus by morpholinium<br />
chlorochromate Pradeep K. Sharma············································································································34<br />
O-25 Functionalized phosphoryl compounds: synthesis, extraction, transport and ionophore<br />
properties R.A. Cherkasov, A.R. Garifzjanov, N.S. Krasnova, A.S. Talan, L.A. Burnaeva, G.A. Ivkova·······35<br />
O-26 Investigating the synthetic potential of aminoalkylferrocenyldichlorophosphanes S. Tschirschwitz,<br />
P. Lönnecke, E. Hey-Hawkins·······························································································································36<br />
O-27 Synthesis and redox properties of crowded diphosphines: approaches toward<br />
phosphorus-phosphorus inter-valence charge transfer systems Shigeru Sasaki, Masatoshi Izawa,<br />
Kohji Sasaki, Kiyotoshi Kato, Midori Murakami, Fumiki Murakami, Masaaki Yoshifuji, Noboru Morita ···················37<br />
II
O-28 The organophosphorus sulfenyl bromides as versatile reagents for cysteine derivatives<br />
functionalization by unsymmetrical disulfide bond formation Mateusz Szymelfejnik,<br />
Sebastian Demkowicz, Dariusz Witt, and Janusz Rachon························································································38<br />
O-29 Ambident electrophilicity of 5-membered ring phosphate triesters Nissan Ashkenazi,<br />
Yoffi Segall, Yishai Karton, Sanjio S. Zade, Michael Bendikov················································································39<br />
O-30 A new approach to the synthesis of phosphoranes on the basis of the reaction of<br />
benzo[d]-1,3,2-dioxaphospholes, having β- or γ-unsaturated group in substituent, with<br />
compounds containing multiple bonds V.F.Mironov, L.M.Burnaeva, L.M.Abdrakhmanova,<br />
M.N.Dimukhametov, Yu.yu. Kotorova, I.V.Konovalova···························································································40<br />
O-31 Diastereoselective synthesis of enantiopure α-aminophosphonic acids derivatives Vladimir A. Alfonsov ·······41<br />
O-32 Phosphorylation of imino analogs of α-halocarbonyl compounds Yuliya V. Rassukana,<br />
Petro P. Onys’ko, Anatoly D. Sinitsa·····················································································································42<br />
O-105 Highly stereoselective and stereospecific epoxidation of 2-phospholenes and N-glycosides of<br />
phospha sugars and their bioassays Mitsuji Yamashita, Taishi Niimi, Michio Fujie,<br />
Valluru Krishna Reddy, Hirono Totsuka, Buchammagari Haritha, Maddali Kasthuraiah Reddy, Satoki Nakamura,<br />
Kazuhide Asai, Takuya Suyama, Gang Yu, Masaki Takahashi, and Tatsuo Oshikawa ···············································43<br />
O-106 Chiral P-heterocycles: efficient method for the optical resolution of 3-methyl-3-phospholene<br />
1-oxides Tibor Novák, József Schindler, Viktória Ujj, János Deme, Ádám Bódis, Elemér Fogassy,<br />
György Keglevich ················································································································································44<br />
O-107 Air-stable chiral primary phosphines L. J. Higham, R. M. Hiney , D. G. Gilheany ································45<br />
P-1 α-iminotrifluoroethyl phosphonate – the first representative of C-phosphorylated N-H imines<br />
A. D. Sinitsa, M. V. Kolotylo, Yu. V. Rassukana, V.V. Pirozhenko, P. P. Onys’ko,·················································46<br />
P-2 Synthesis of calix[4]resorcins, containing phosphoryl fragments on the bottom rim of the<br />
molecule A. R. Burilov, I. R. Kniazeva, Yu. M. Sadykova, M. A. Pudovik, W.D. Habicher, I. Baier,<br />
A. I. Konovalov····················································································································································47<br />
P-4 Interaction of 3-alkyl-2-alkoxy-1,3,2-oxazaphosphinanes with alkylchloroformates A.E. Shipov,<br />
G.K. Genkina, P.V. Petrovskii, T.A. Mastryukova···································································································48<br />
P-6 2,2,2-tribromonaphtho[2,3-d]-1,3,2-dioxaphosphole: obtaining and reaction with phenylacetylene<br />
A.V.Bogdanov, V.F.Мironov, B.I.Buzykin, A.B.Dobrynin, D.B.Krivolapov, А.I.Konovalov········································49<br />
P-7 Synthesis, characterization and applications of novel iminophosphinites Jake Yorke,<br />
Sarah K. D. Beaton, Aibing Xia ····························································································································50<br />
P-9 Synthesis and reactions of phosphaisocoumarins Ai-Yun Peng, Bo Wang, Xun Yang···························51<br />
P-14 Nucleophilic phosphine-catalyzed [3+2] cycloaddition of allenes with N-(thio)phosphoryl imines:<br />
facile synthesis of substituted 3-pyrrolines Bo Zhang, Zhengjie He························································52<br />
P-17 Diselenophosphates: synthesis, reaction with electrophiles, and P-Se bond cleavage Chen-Wei Liu ···53<br />
P-23 Tricycles synthesized by the reaction of PCl5 with open-chained molecules Ferdinand Belaj·······54<br />
P-24 Monodentate spiro phosphonites: highly efficient ligands for asymmetric hydrogenation of<br />
non-acylated enamines Guo-Hua Hou, Shou-Fei Zhu, Jian-Hua Xie, Qi-Lin Zhou···································55<br />
P-25 Microwave-assisted synthesis in organophosphorus chemistry György Keglevich, Melinda Sipos,<br />
Anna Szekrényi, Eszter Dudás, Daniella Takács and Emília Hohmann ·································································56<br />
P-30 Synthesis and properties of pentacoordinate phosphorus compounds containing a pentacoodinate<br />
silicon atom Hideaki Miyake, Naokazu Kano, and Takayuki Kawashima·······················································57<br />
III
P-31 Synthesis of a novel apical–equatorial–equatorial type tridentate ligand and construction of<br />
pentacoordinate phosphorus compounds Hideaki Yamamichi, Shiro Matsukawa, Yohsuke Yamamoto···58<br />
P-34 The catalytic ring-closure reaction in the presence of phosphorous oxychloride Hui Wang,<br />
Renzhong Qiao····················································································································································59<br />
P-35 Dithiophosphorylation of cyclic monoterpenes Il’yas S. Nizamov , Artiem V. Sofronov,<br />
Rafael A. Cherkasov, Liliya E. Nikitina ·················································································································60<br />
P-36 Backgrounds for the technology for the preparation of organophosphorous precursors<br />
Magdeev I.M., Budnikova Yu.H., Muslinkin A.A., Nabiullin V.N., Berdnik I.V. ·························································61<br />
P-37 Synthesis of 1,2-azaphosphetidines with amino acid fragment Inga M.Aladzheva,<br />
Olga V.Bykhovskaya, Pavel V.Petrovskii, Tatyana A.Mastryukova ··········································································62<br />
P-38 Asymmetric syntheses of new phosphonotaxoids Irina V. Guliaiko, Oleg I. Kolodiazhnyi························63<br />
P-42 X-ray crystal structure of hydrolysates of triphenylphosphine dichloride Jian Chen Zhang,<br />
Wen Ping Shi, Jun Xu, Yu Fen Zhao······················································································································64<br />
P-46 The synthesis of 7,11,18,21-tetraoxa-1,3,5,13,15,17-hexaaza-2,4,6λ5,12λ5, 14,16-hexaphospha<br />
trispiro[5.2.2.5.2.2]heneicosa-1,3,5,12,14,16-hexaene Ju Zhiyu, Zou Ruyi, Yin Zhengming, Ye Yong,<br />
Liao Xincheng, Zhao Yufen···································································································································66<br />
P-47 P-nitrophenoxycarbonylphosphonate diesters-potent reagents for the synthesis of hindered<br />
carbamoylphosphonates Julia Frant, Irena Beylis, Naama Mussai, Reuven Reich and Eli Breuer··················67<br />
P-48 Phosphorylation of dihydroxy anthraquinones by Atherton-Todd reaction Jun-Feng Zhao,<br />
Xian-Li Wu, Si-Xing Zhang, Xin-Cheng Liao, Shu-Xia Cao, Yan-Chun Guo, Yu-Fen Zhao ······································68<br />
P-49 Decomposition reaction of tetra-hydroxymethylphosphonium chloride Kaiqi Shi, Ya Li,<br />
Lan Jiang, Qiaoyun Ye, Shuangxi Shao············································································································69<br />
P-50 Phosphonilation of 1,3-diaryl-2,3-dihydro-1H-naphth[1,2-е][1,3]oxazine by dialkyl and diaryl<br />
phosphonates Kirill E. Metlushka, Vladimir A. Alfonsov, Charles E. McKenna, Boris A. Kashemirov,<br />
Olga N. Kataeva, Viktor F. Zheltukhin, Dilyara N. Sadkova, Alexey B. Dobrynin·····················································70<br />
P-51 Dimenthyl (2R)-2-hydroxy-3-chloropropylphosphonate – accessible chiron for the asymmetric<br />
synthesis of hydroxyphosphonates Kolodiazhnyi O.I., Nesterov V.V. ·····················································71<br />
P-55 Synthesis n-phosphorylated chrysin-7-yl amino acid esters Li Wenfeng, Chen Xiaolan, Yuan Jinwei,<br />
Qu Lingbo, Zhao Yufen ········································································································································72<br />
P-57 Applications of Lawasson’s reagent in synthesis of biologically active phopshorus-heterocycles<br />
Liang-Nian He, Jin-Quan Wang, Ya Du, Fei Cai ···································································································73<br />
P-62 Phosphorous acid nucleophilic addition at carbonyl groups Li-Ping Zhanga , LingBo Qu,<br />
Yu-Fen Zhao ·······················································································································································74<br />
P-64 The synthesis of tetracyclic phosphorate M.A.Pudovik, L.K.Kibardina, S.A.Terent’eva, O.N.Kataeva,<br />
G.A.Chmutova, V.A.Alfonsov································································································································75<br />
P-65 Abnormal reactivity of arylaminomethylenebisphosphonates. aminomethylation on benzene ring<br />
in base medium M.O.Lozinsky, A.L.Chuiko ·······································································································76<br />
P-69 The preparation of nitrogen-containing heteroaryoylphosphonates and their reactions with<br />
trialkyl phosphites D. Vaughan Griffiths, Michael C. Salt and Helen V. Taylor············································77<br />
P-71 Reaction of racemic and non-racemic silylated (1-phenyl)ethylamine with O-phenylchloromethyl<br />
isothiocyanatothiophosphonate. Synthesis of optically active 1,3,4-thiazaphosphole Ludmila K.<br />
Kibardina, Mikhail A. Pudovik, Natalia A. Khailova, Vladimir A. Alfonsov, Olga N. Kataeva···································78<br />
IV
P-73 Study of reaction of acetylenic phosphonates with carbanionic nucleophiles N.G. Didkovskii,<br />
A.I Petryanina, A.V. Dogadina, N.I. Svintsitskaya and B.I. Ionin·············································································79<br />
P-75 The phospho-aldol reaction and complexes of aluminium containing salcyan and related ligands<br />
Nichola E. Cosgrove, Terence P. Kee····················································································································80<br />
P-78 Synthesis of 2-substitued-pyrano[2,3-d]pyrimidin-4(3H)-one derivatives using iminophosphorane<br />
Qing-Yun Ren, Hong-Wu He·································································································································81<br />
P-81 Synthesis of solanesyl phosphonate Qu Lingbo, Shi Xiaona, Chen Xiaolan ················································82<br />
P-86 Synthesys and structural peculiarities of phosphorus pentachloride complexes with<br />
4-dimethylaminopyridine and N-methylimidazole S.E.Pipko, L.V.Bezgubenko, A.D.Sinitsa,<br />
E.G.Kapustin, E.B.Rusanov, M.I.Povolotskii··········································································································83<br />
P-87 Chemistry of fulvene-type P-heterocyclic compounds Shigekazu Ito, Hideaki Miyake, Satoshi<br />
Sekiguchi, Matthias Freytag, Masaaki Yoshifuji·····································································································84<br />
P-89 Synthesis and complexations of a novel stable carbene bearing a phosphorus ylide Shin-ya Nakafuji,<br />
Junji Kobayashi, and Takayuki Kawashima···········································································································85<br />
P-91 An efficient synthesis of α-(substituted phenoxy acetoxy)alkyl phosphinates sodium salts Tao Wang,<br />
Hong Wu He························································································································································86<br />
P-93 Phosphorylacetic acid thioamides as key substancesfor phosphorylated heterocycles V.A. Kozlov,<br />
I. L. Odinets, D.V. Aleksanyan, P.V. Petrovskii, T. A. Mastryukova ·········································································87<br />
P-94 The formation of ion-radical salts in the reaction of fullerene C60 with Phosphorus (III) amides<br />
I.P.Romanova, V.F.Mironov, G.G.Yusupova, О.А.Larionova, V.I.Morozov, O.G.Sinyashin·······································88<br />
P-95 New method for the asymmetric reduction of ketophosphonates Vitaly V. Nesterov,<br />
Oleg I. Kolodiazhnyi············································································································································89<br />
P-96 Diastereoselective synthesis of enantiopure cyclic α- aminophosphonic acids Vladimir A. Alfonsov,<br />
Charles E. McKenna, Еvgenia V. Bayandina, Boris Kashemirov, Liliya N. Yarmieva, Olga N.Kataeva, Lyudmila<br />
N.Punegova·························································································································································90<br />
P-100 Studies on the synthesis and separation of isoleucine oligopeptides assisted by phosphorus<br />
oxychloride Wei-Na CAO,Li-Na TANG,Li MA,Kui LU,Yu-Fen ZHAO················································91<br />
P-101 Synthesis of bis(phosphonates) pyrrolidines derivatives Feng Gao, Ting-ting Wang,<br />
Ying-jun Song, Wen-hu Wang ·······························································································································92<br />
P-104 Synthesis of novel bicycli caged phosphate derivatives Wen-Yan MO, Hong-Wu HE···························93<br />
P-106 The synthesis and reactions of alkyl 2,3,3-tris(dialkoxyphosphoryl)propionates and alkyl<br />
2,3,3-tris(dialkoxyphosphoryl)acrylates Yuen-Ki Cheong, Philip Duncanson, D. Vaughan Griffiths,<br />
Xiao Han ····························································································································································94<br />
P-112 Reactions between N-(thio)phosphoryl imines and diethylzinc Xinpeng Ma, Xinyuan Xu,<br />
Chungui Wang, Guofeng Zhao, Zhenghong Zhou, Chuchi Tang ··············································································95<br />
P-113 Aza-henry reaction between N-thiophosphoryl imines and nitromethane Xinpeng Ma,<br />
Xinyuan Xu, Chungui Wang, Guofeng Zhao, Zhenghong Zhou, Chuchi Tang ···························································96<br />
P-114 Organocatalytic asymmetric synthesis of α- hydroxy phosphonates Xinyong Li, Weiwei Jin,<br />
Caibao Chen, Wen-Jing Xiao································································································································97<br />
P-115 The aza-morita-baylis-hillman reaction of N-thiophosphoryl imines catalyzed by<br />
1,3,5-triaza-7-phosphaadmantane Xinyuan Xu, Chungui Wang, Zhenghong Zhou, Chuchi Tang ···············98<br />
V
P-118 Polarity and conformations of 1,2,4,5-tetra(tert-butylphospha)cyclohexanes in solution Ya.A. Vereshchagina,<br />
E.A. Ishmaeva, D.V. Chachkov, A.A. Gazizova, Z.S. Novikova ················································································99<br />
P-119 Novel ionic phosphine ligands: their synthesis and application in suzuki coupling reaction in<br />
ionic liquid Yan Chen,Guang-Ao Yu,Yong Ren,Xiang-Gao Meng,Jin-Tao Guan,Sheng Hua Liu ······100<br />
P-120 Synthesis and characterization of novel bile acids derived H-phosphonates conjugates Yan Li,<br />
Yong Ju, Yufen Zhao ··········································································································································101<br />
P-121 Study of the reaction between N- (O, O-diisopropyl) phosphoryl amino acids and the mixed<br />
nucleotides Yanchun Guo, Shuxia Cao, Yali Xie, Xianli Wu, Xincheng Liao, Yufen Zhao ······························102<br />
P-127 Organocatalytic friedel-crafts alkylations of indoles with dialkyl Ying-Cen Guo, Dong-Pin Li,<br />
Wen-Jing Xiao···················································································································································103<br />
P-129 Synthesis of L-phenylalanine dipeptide mediated by phosphorus oxychloride and separation by<br />
RPLC Ying-yan Yao,Kui-Lu··················································································································104<br />
P-130 Synthesis of some new 2-(bis-β-chloroethylamin) 7-methoxyl-3-substitutedphenyl-4-methyl-1, 3,<br />
2-benzoxazaphosphorin 2-oxides Yuan Jinwei, Chen Xiaolan, Qu Lingbo, Yufen Zhao,·························106<br />
P-132 The reaction of pyrrole-2,5-diones and their halogenated derivatives with trivalent phosphorus<br />
compounds Yuen-Ki Cheong, Philip Duncanson, D. Vaughan Griffiths························································107<br />
P-134 Synthesis of diphenyl α-(O-phenyl bis(2-chloroethyl)amidophosphorylamino)phosphonates<br />
Zhanwei Cui, Zhiwei Miao, Jianfeng Zhang, Ruyu Chen·······················································································108<br />
P-138 Modified alkaloids as organocatalysts for the asymmetric synthesis of organophosphorus<br />
compounds A.O. Kolodiazhnaya, V.P.Kukhar, O.I. Kolodiazhnyi······························································110<br />
P-144 Reactions of aminoacetylenephosphonates with N-nucleophilic reagents Anastasia V. Aleksandrova,<br />
Alla V. Dogadina, and Boris I. Ionin···················································································································111<br />
P-154 Template-directed synthesis of phosphorous containing macrocycles:structure<br />
P-159<br />
/reactivity-relationships S. Bozkurt, S. Ekici, D. Jaspers, M. Nieger, E. Niecke·······································112<br />
Synthesis and structure of thiophene, selenophene, and related compounds carrying four<br />
phosphoryl groups Shigeru Sasaki, Kazutaka Adachi, Masaaki Yoshifuji, Noboru Morita···························113<br />
P-164 Synthesis of new β-amino-derivatives of alkenylphosphonates R.A.Cherkasov, N.G.Khusainova,<br />
O.A.Mostovaya, E.A.Berdnikov, S.M.Rybakov······································································································114<br />
P-171 Green synthesis of phosphoramides by trimetaphosphate(P3m) NI, F.; Fu, C.; Sun, S. T.; Zhao, Y. F··116<br />
P-175 Phosphinoglycines and phosphinoglycolates J. Heinicke, J. Lach, N. Peulecke, P. G. Jones, I. Dix······117<br />
P-178 Stereospecific preparation of P-chirogenic phosphide boranes from the corresponding<br />
chlorophosphines H. Lauréano, G. Morata, M.L. Auclair, J.C. Henry, P. Richard, C. Darcel, S. Jugé ·······118<br />
P-179 Recent progresses on P-chirogenic phosphine synthesis M. L. Auclair, G. Morata, M. Gomès,<br />
S. Loutsenko, J. C. Henry, P. Richard, C. Darcel, S. Jugé·············································································119<br />
P-186 Synthesis of hexaisopropyltriamidephosphite: Myth or reality? Anatoliy P. Marchenko,<br />
Georgyi N. Koidan, Yurii M. Pustovit , Mark I. Povolotskii, Aleksandr N. Chernega, Aleksandr M.Pinchuk·············120<br />
P-187 A convenient method for the synthesis of cyclophosphamide analogues Zhang Liuji,<br />
Qu Lingbo, Zhang Baojun, Zhao Yufen················································································································121<br />
P-188 Convenient synthesis of α-hydroxyphosphinate Tao Ji, Guo Tang , Hua Fang, Yufen Zhao ···············122<br />
P-190 Synthesis of N-(diisopropyloxyphosphoryl)dipeptides in a one-pot method Kan Lin,<br />
Xiantong Huang, Guo Tang, Yufen Zhao ·············································································································123<br />
VI
P-191 Organicphosphorus compounds as small molecular catalysts in the direct asymmetric aldol<br />
reaction Qin Tao, Guo Tang, Yu-Fen Zhao·······························································································124<br />
Symposium 2<br />
PHOSPHORUS COORDINATION COMPOUNDS AND THEIR USE AS CATALYSTS<br />
KL-5 Design and synthsis of spiro phosphorus ligands for asymmetric catalysis Qi-Lin Zhou················125<br />
KL-6 Synthesis and application of new p-chiral phosphine ligands Tsuneo Imamoto ······························126<br />
KL-15 My excursion to the chemistry of stable diradicals: diphosphetanediyles Edgar Niecke ················127<br />
KL-17 Innovative chiral phosphorines for hydrogenation and hydroformylation Xumu Zhang················128<br />
KL-30 Phosphorus ligands design for coordination chemistry and catalysis P.L. Floch····························129<br />
IL-8 Ambiphilic phosphine/borane derivatives: synthesis and coordination properties S. Bontemps,<br />
G. Bouhadir, K. Miqueu, L. Maron, D. Bourissou ································································································130<br />
IL-11 Synthesis and asymmetric catalysis of new chiral tetradentate aminophosphine ligands<br />
Yan-Yun Li, Zhen-Rong Dong, Wei-Yi Shen, Gui Chen, Xue-Qing Zhang, Hui Zhang , Jingxing Gao·······················131<br />
IL-13 Phosphorus chemistry & sustainable development Pascal Metivier ··················································133<br />
IL-14 Phosphine and phosphine-mimic complexes in catalysis T. S. Andy Hor·······································134<br />
IL-40 Synthesis and chemistry of metallabenzyne Tingbin Wen, Guochen Jia···············································135<br />
O-35 Synthesis of strained-ring phosphorus heterocycles from phosphatriafulvenes and<br />
phosphaheptafulvenes Heydt, H. Bergsträber, U. Hofmann, M.A. Werner, S. Regitz, M·························136<br />
O-36 Highly functionalised phosphorus ligands: synthesis and diverse coordination chemistry Martin B. Smith··137<br />
O-37 P* chiral aminophosphine complexes of Copper (I): Synthesis and X-ray structural characterization<br />
T. Arun Luiz , Babu Varghese, M. N. Sudheendra Rao··························································································138<br />
O-38 Phosphorus trivalent reagents: efficient tools for multicomponent and organocatalytic reactions<br />
David Virieux, Anne Françoise Guillouzic, Henri-Jean Cristau, Jean-Luc Pirat ····················································139<br />
O-39 Bisdithiophosphonic acids in metal complex formation reactions Il’yas S. Nizamov,<br />
Yevgeniy M. Martiyanov, Il’nar D. Nizamov, Alfiya N. Gataulina, Rafael A. Cherkasov ·········································140<br />
O-40 Synthesis and biological evaluation of a highly reaction Zn(II) mononuclear complex for<br />
phosphodiester cleavage Chao Li, Ren-Zhong Qiao, Yu-Fen Zhao·························································141<br />
O-41 Complexes of crown-containing N-phosphorylthioureas with Ni(II) cation F. D. Sokolov,<br />
S. V. Baranov, N. G. Zabirov, R. A. Cherkasov·····································································································142<br />
O-42 Novel heterocyclic p-ligands: synthesis and application in Pt(II) complexes György Keglevich,<br />
Andrea Kerényi, Melinda Sipos, Annamária Balassa, Beatrix Mayer, Tamás Körtvélyesi·····································143<br />
O-43 DoM chemistry of phosphinic amides: synthesis of ligands and their application in robust high<br />
performance catalysts D. Bradley G. Williams······················································································144<br />
O-109 Design, synthesis, and application of phosphaalkenes to unique palladium and gold catalysts<br />
Shigekazu Ito, Matthias Freytag, Hongze Liang, Katsunori Nishide, Masaaki Yoshifuji ··········································145<br />
P-18 Novel 36- and 38-membered P,N-containing cyclophanes with large hydrophobic cavities<br />
D.V.Kulikov, A.S.Balueva, A.A.Karasik, A.V.Kozlov, Sh.K.Latypov, O.N.Kataeva, P.Lönnecke, E.Hey-Hawkins,<br />
O.G.Sinyashin ···················································································································································146<br />
P-20 Phosphorus functionalised carbenes: synthesis and coordination properties D.Morvan, J.J.Yaouanc,<br />
P.A.Jaffrès, J.F.Capon, P.Schollhammer, J.Talarmin, F.Gloaguen.·······································································148<br />
VII
P-22 Extraction properties of 1,10-da-18-crown-6, modified by exocyclyc chelating groups Felix D. Sokolov,<br />
Maria G. Babashkina, Damir A. Safin, Nail G. Zabirov, Rafael A. Cherkasov ·····················································149<br />
P-26 Chiral spiro monophosphites for Rh-catalyzed asymmetric addition of arylboronic acids to<br />
aldehydes, ketones and imines Hai-Feng Duan, Shou-Fei Zhu, Yi-Xia Jia, Qi-Lin Zhou···························150<br />
P-59 Synthesis of O,O-dialkyl-2-oxo-2-(4-(selenomor pholinosulfonyl)phenylamino)ethylphosphonate<br />
Fang Wang, Liming Hu, Xiaopeng Li, Xuemei Xu························································································151<br />
P-105 Synthesis of chiral spirobitetraline phosphoramidite ligands Hai-Feng Duan, Shou-Fei Zhu,<br />
Yi-Xia Jia, Qi-Lin Zhou······································································································································152<br />
P-161 Synthesis and mechanism of phosphaisoquinolin-1-ones by Pd(II)-catalyzed cyclization of<br />
O-(1-alkynyl)phenylphosphonamide monoesters Wei Tang, Yi-Xiang Ding········································153<br />
P-174 Novel pyrido- and benzo-annulated 1,3-azaphospholes J. Heinicke, M. S. S. Adam, B. R. Aluri,<br />
P.G. Jones·························································································································································155<br />
P-177 Designing phosphorus ligands at the P-center for asymmetric reactions catalyzed by Rh or Pd<br />
complexes C. Darcel, D. Moulin, C. Bauduin, M. Gomès, J.C. Henry, M. Lagrelette, P. Richard·················156<br />
P-196 N-heterocyclic carbene-Copper complex-catalyzed hydrophosphinylation of alkynes Mingyu Niu, Hua<br />
Fu, Yuyang Jiang, Yufen Zhao ····························································································································157<br />
Symposium 3<br />
STRUCTURE AND REACTIVITY OF INORGANIC PHOSPHORUS COMPOUNDS<br />
KL-11 Biologically relevant phosphoranes: structural characterization of glucofuranose and<br />
xylofuranose phosphoranes as applied to phosphoryl transfer enzymes Robert Holmes,<br />
A. Chandrasekaran, Natalya V. Timosheva··········································································································159<br />
KL-19 Studies on stable 1,3-diphosphacyclobutane-2,4-diyls Masaaki Yoshifuji, Anthony J. Arduengo, III and<br />
Shigekazu Ito·····················································································································································161<br />
IL-31 Organophosphorus Pi-conjugated materials for optoelectronic applications Muriel Hissler,<br />
Christophe Lescop, Régis Réau···························································································································162<br />
IL-32 Recent advances in the chemistry of P,N-heterocycles Streubel, R., Özbolat, A., Helten, H., Perez,<br />
J. M., Nieger M.·················································································································································163<br />
IL-50 Radiation-induced synthesis of polymers on the basis of elemental phosphorus N.P. Tarasova ····164<br />
O-72 Influence of media components on processes of radiation-indused polymerization of white<br />
phosphorus I.M. Artemkina, A.S. Vilesov, Y.V. Smetannikov, N.P. Tarasova············································165<br />
O-73 An effective methodology of P,N-macrocycles design A.A. Karasik, A.S. Baluev, R.N. Naumov,<br />
D.V.Kulikov, Yu.S.Spiridonova, O.G.Sinyashin, E. Hey-Hawkins ··········································································166<br />
O-74 The mechanism of the reaction of alkali metal phenoxides with hexahalocyclotriphosphazenes<br />
Christopher W. Allen, Michael Calichman, Amy Freund·······················································································167<br />
O-75 Strained P2C and P2C2 cyclic cations from phosphaalkenes Derek P. Gates ································168<br />
O-76 New reagents for halogenation of phosphorus Rikard Wärme, Lars Juhlin··········································169<br />
O-79 Bimetallic activation of white phosphorus Dmitry Yakhvarov, Maurizio Peruzzini, Maria Caporali,<br />
Pierluigi Barbaro, Luca Gonsalvi, Stefano Midollini, Annabella Orlandini, Fabrizio Zanobini,Yulia Ganushevich,<br />
Oleg Sinyashin ··················································································································································170<br />
VIII
O-80 Environmentally being chemical conversion of CO2 into organic carbonates catalyzed by<br />
phosphinium salts J.S.Tian, C.X.Miao, J.Q.Wang, F.Cai, Y.Du, Y.Zhao, L.N.He ······································171<br />
O-81 Transition metal complexes containing phosphenium and phosphite ligands: formation and<br />
theoretical approach Hiroshi Nakazawa, Katsuhiko Miyoshi, and Keiko Takano·····································172<br />
O-82 The formation of spherical giant molecules and dynamic behaviour of supramolecular assemblies<br />
based on PN ligand complexes Manfred Scheer, L. J. Gregoriades, R. Merkle, B. P. Johnson, F. Dielmann 173<br />
O-84 The chemical properties of alkali metals heptaphosphides V.А.Miluykov, O.G.Sinyashin,<br />
А.V.Kataev, P.Lonnecke, E.Hey-Hawkins············································································································174<br />
P-10 Designing new metallo-organic catalysts for the asymmetric phospho-aldol reaction Alexandra C. Gledhill,<br />
Tracy D. Nixon, Terence P. Kee··························································································································176<br />
P-15 Electrosynthesis of metal phosphides on the basis of white phosphorus Budnikova Yu.H.,<br />
Krasnov S.A., Gryaznova T.V., Tazeev D.I., Sinyashin O.G.··················································································177<br />
P-76 Novel synthetic routes to phosphorus organic compounds on the basis of the elemental<br />
phosphorus (P4) O. G. Sinyashin, E. S. Batyeva, E.V. Platova, E.K. Badeeva, L.I. Kursheva······················178<br />
P-99 Reaction of 2-R-benzo[d]-1,3,2-oxazaphosphorin-6-ones with hexafluoroacetone V.F.Mironov,<br />
Yu.Yu.Borisova, L.M.Burnaeva, A.T.Gubaidullin, I.A.Litvinov, G.A.Ivkova, N.K.Amerkhanova, I.V.Konovalova ······179<br />
P-117 Study on structure and properties of amorphous Ni-Cu-P alloy coatings prepared by electroless<br />
plating Xu Ruidong, Wang Junli,Guo Zhongcheng ························································································180<br />
P-139 Determination of dexamethasone sodium phosphate in medicament by fluorescence probe of<br />
Symposium 4<br />
Tb 3+ -Tiron complex Chaobiao Huanga, Zhenrong Yu, Libin Zhou······························································181<br />
NUCLEOTIDES AND OLIGONUCLEOTIDES-FROM BASIC TO MEDICINAL<br />
APPLICATIONS; BIOLOGICAL ASPECTS OF PHOSPHORUS CHEMISTRY<br />
KL-14 The chemical biology of histidine triad nucleoside binding proteins Carston R. Wagner···················183<br />
KL-16 Studies on modified oligonucleotides Lihe Zhang·················································································184<br />
KL-21 Kinase and kinase inhibitor as anticancer therapeutics Chen Li ························································185<br />
KL-40 Stereochemistry of enzyme-assisted P-N bond cleavage in adenosine 5'-phosphoramidates and<br />
–phosphoramidothioates Agnieszka Krakowiak, Renata Kaczmarek, Janina Baraniak,<br />
Michał Wieczorek, Wojciech J. Stec ····················································································································186<br />
KL-42 Polyphosphates for drug and gene delivery Renxi Zhuo, Shiwen Huang ··········································187<br />
KL-46 Synthesis and biochemical activity of new oligonucleotide analogs Marvin H. Caruthers ················188<br />
IL-41 Study of artificially selected biocatalysts covalently modified by organophosphorus compounds<br />
Alexander G. Gabibov, Andrey V. Reshetnyak, Maria Francesca Armentano, Natalia A. Ponomarenko, Oxana<br />
Durova, Rustam Ziganshin, Marina Serebryakova, Vadim Govorun, Gennady Gololobov, Herbert C. Morse III,<br />
Alain Friboulet, Sudesh P. Makker, Alfonso Tramontano······················································································189<br />
IL-42 Thermosensitive phosphate/thiophosphate protecting groups and the development of thermolytic<br />
oligonucleotide prodrugs Andrzej Grajkowski, Cristina Ausín, Serge L. Beaucage··································190<br />
IL-43 Advancing biomedical research by development of fluorescent oligonucleotide-based assays<br />
Gerald Zon························································································································································192<br />
IL-44 Non watson-crick structure recognition and its applications Zhen Xi··············································193<br />
IX
IL-45 Probing mechanisms of phosphotransferases with thio effects Karol Bruzik ···································194<br />
IL-47 RNA interference: the new paradigm of drug discovery based on nature's phosphorous<br />
chemistry Muthiah Manoharan·················································································································195<br />
IL-49 Synthesis and biological studies of G-quadruplex stabilizers Lige Ren, Jing Huang, Boqiao Fu,<br />
Xiang Zhou ·······················································································································································196<br />
O-96 Perifosine inhibits multiple signaling pathways in glial progenitors and cooperates with<br />
temozolomide to arrest cell proliferation in gliomas in vivo. Alan H. Shih, Hiro Momota,<br />
Edward Nerio, Eric C Holland ···························································································································197<br />
O-97 A low-molecular phosphinic inhibitor of leucine aminopeptidase of potential medical significance<br />
A.Mucha ···························································································································································198<br />
O-98 Mapping of the functional phosphate groups in the catalytic core of deoxyribozyme 10-23<br />
Barbara Nawrot, Kinga Widera, Marzena Wojcik, Beata Rebowska, Wieslawa Goss, Wojciech J. Stec····················199<br />
O-100 The aza-α-aminophosphonate macrocycles as potential supramolcular hosts for metal ions and<br />
biologically important molecules P.Mlynarz, A.Rydzewska, S.Sliwinska, G.Schroeder,P.Kafarski············200<br />
O-101 Studies on the condensation of H-phosphonate monoesters with S-nucleophiles Renata Hiresova ,<br />
Jacek Stawinski ·················································································································································201<br />
O-103 ESI investigation of non –covalent complexes between phosphorylated daidzein and insulin Chen Xiaolan,<br />
Shi Xiaona, Yuan Jinwei, Lu Jiansha, Qu Lingbo, Zhao Yufen ··············································································202<br />
O-104 Synthesis of novel steroidal bioconjugates with azt and phosphorus Peiyuan Jin, Kai Liu, Yong Ju,<br />
Yufen Zhao························································································································································203<br />
P-33 The chemical synthesis of oligonucleotide phosphoramidates HongYu Zhang, ChunJian Duan,<br />
XiangQian Liu, XiaoLan Chen, LingBo Qu, YuFen Zhao······················································································204<br />
P-41 Studies on the self-assembly of L-serine into L-Serine phosphopeptide mediated by phosphorus<br />
oxychloride Jianchen Zhang, Wenping Shi, Jun Xu, Yufen Zhao·········································································205<br />
P-43 Synthesis of N-protected O-hydroxyl-phenyl - α-aminophosphonic monoester Jianfeng Zhang,<br />
Zhiwei Miao, Zhanwei Cui and Ruyu Chen··········································································································206<br />
P-44 A novel mechanism about the cleavge of N-glycosidic bond in electrospray ionization tandem<br />
mass spectra of nucleotide Jihong Liu, Shuxiao Cao, Ruyi Zou, Jiansha Lu, Xincheng Liao, Yufen Zhao····207<br />
P-45 Synthesis of isoprenoid olefin isomers via phosphonium and phosphoryl stabilized carbanions<br />
José S. Yu, David F. Wiemer·······························································································································208<br />
P-52 Investigation on interaction of L-methionine dipeptide with ct-DNA by ultraviolet spectroscopy<br />
method Kui Lu,Rui Li,Li Ma,Yufen Zhao························································································209<br />
P-61 Remineralization effects of honeysuckle flower solution on initial enamel carious lesions in vitro<br />
Linglin Zhang····················································································································································211<br />
P-72 Self-assembly of L-glutamine into oligo-peptides mediated by phosphroric chloride Li Ma,<br />
Ming-xiu Lü, Wei-na Cao, Kui Lu ·······················································································································212<br />
P-74 Synthesis and biological activity of α-hydroxyphosphonates Na Zuo, Hong-Wu He························213<br />
P-85 Bio-relevant derivatives of calixarene phosphonic acids S.Cherenok, A.Vovk, I.Muravyova,<br />
A.Marcinowicz, J.Poznanski, O. Muzychka, V.Kukhar, W.Zielenkiewicz, V.Kalchenko············································214<br />
P-123 Effects of phosphorylation on the conformation of peptide and protein Yan-Mei Li, Yu-Fen Zhao ···215<br />
P-124 Synthesis and purification of L-hydroxyproline oligo-peptides assisted by phosphorus<br />
oxychloride Yan-ting Sun, Ye-zhen Feng, Kui Lu ·······················································································216<br />
X
P-125 Self-assembly of L-glutamine into oligo-peptides mediated by phosphroric chloride Li Ma,<br />
Ming-xiu Lü, Wei-na Cao, Kui Lu ·······················································································································217<br />
P-135 Design and synthesis of 5’-fluorescently labeled nucleosides Zheng Jinyun, Zhang Shufeng, Zhao Yufen········218<br />
P-140 Microwave-assisted syntheses of 2',3'-o-isopropylidene ribonucleoside 5'-monophosphates Z. Wang,<br />
Y.F. Zhao ··························································································································································219<br />
P-141 The correlation between the estimated partition coefficient P and capacity factor K of amino<br />
acids and phosphoryl amino acids Hongxia Liu, Canfang Zhao, Mian Liu, Yuyang Jiang, Yufen Zhao·····221<br />
P-148 Synthesis of α, β-difluoromethylenebisphosphonate analogs of dntps: probes for DNA<br />
polymerase β Thomas G. Upton1, Boris A. Kashemirov, Charles E. McKenna, Myron F. Goodman, G. K.<br />
Surya Prakash, Roman Kultyshev, Vinod K. Batra, David D. Shock, Lars C. Pedersen, William A. Beard, Samuel<br />
H. Wilson··························································································································································222<br />
O-167 Synthesis of bicyclic furopyrimidine deoxynucleosides conjugated with N-diisopropylphosphoryl<br />
amino acids Qiang XiaoA, Xuanye Jin, Weihong Xiao, Yong Ju··································································223<br />
P-168 Effects of chrysin and its tetraethyl bis-phosphoric ester in the cell cycle and P 21/WAF1 proteins of the human<br />
cervical carcinoma cell line hela Ting Zhang, Xiaolan Chen, Lingbo Qu, Manji Sun, Yufen Zhao·················224<br />
P-170 The peptide bond formation reaction with peptides and proteins in aqueous solution by<br />
inducement of N-phosphoryl α-amino acids Jia Ning Wang, Yan Liu, Dacheng He , Yu-Fen Zhao ··········225<br />
P-172 The synthesis and resolution of the opticle active derivatives of N-thiophosphoramidate<br />
derivatives Anfu Hu, Peng Liu , Pengxiang Xu ,Yufen Zhao ········································································227<br />
P-176 New β-ferrocenyl phosphino α-aminoacids as modular electrochemical biomarker for<br />
CSF114(glyco)peptides A. Colson, J. Bayardon, E. Rémond, F. Nuti, R. Meunier-Prest, M. Kubicky,<br />
C. Darcel, A.M. Papini, S. Jugé ··························································································································228<br />
P-183 A study on the nucleoside analogs using electrospray ionization mass spectrometry Liu Ruoyu,<br />
Ye Yong, Cao Shuxia, Liao Xincheng , Zhao Yufen·······························································································229<br />
P-184 Studies on the noncovalent bonding between ATP and α-aminophosphonic acids derivatives by<br />
ESI-MS and molecular modeling Liu Xiaoxia, Fang Hua, Liu Yan, Zhao Yufen······································230<br />
P-185 Peptide bond formation on C-terminal of peptides in organic solution by inducement of<br />
N-phosphoryl amino acid Liu Xiaoxia, Liu Yan, Zhao Yufen ·································································231<br />
P-193 Synthesis of O-nucleoside N-phosphoryl amino acid methyl ester Chen Wei-Zhu, Gao Yu-Xing,<br />
Li Gang, Zhao Yu-Fen ·······································································································································232<br />
P-195 Protein phosphorylation regulates protein local structure and function Jia Hu, Yu-Fen Zhao, Yan-Mei Li··233<br />
P-196 A fast way to synthesis nucleoside H-phosphonate derivatives Jian-Bin Wu, Jian-Nan Guo, Jun Zhang,<br />
Shu-Na Luo, Xiang Gao, Yu-Fen Zhao ················································································································233<br />
Symposium 5<br />
THEORETICAL ASPECTS OF PHOSPHORUS CHEMISTRY ;<br />
31 P NMR IN BIOLOGICAL SYSTEMS<br />
KL-7 Molecular simulation studies of protein kinases Martin J. Field ························································235<br />
KL-8 From powder NMR tensor to 3D molecular structure, promises or illusion - a 31 P and 13 C case<br />
study on cimitidine Steve C.F. Au-yeung··································································································236<br />
IL-15 NMR investigations of phosphate transfer enzymes Jonathan P. Waltho···········································237<br />
XI
IL-16 Photophysics of DNA and light harvesting systems GuanHua Chen ··················································238<br />
IL-18 QM-MM computation of phosphate transfer by enzymes Charles E. Webster····································239<br />
O-44 1.3-diphosphacyclobutane-diyls as building blocks for extended structures Wolfgang W. Schoeller ··240<br />
O-45 Development of a bidentate ligand based on decafluoro-3-phenyl-3-pentanol: steric effect of<br />
pentafluoroethyl groups on the stereomutation of oequatorial C-apical spirophosphoranes<br />
Y.Yamamoto, X.d.Jiang, K.I.Kakuda, S. Matsukawa, H.Yamamichi ·······································································241<br />
O-46 Conformational analysis of 1,4-heterophosphinanes Ya.A. Vereshchagina, E.A. Ishmaeva,<br />
A.A. Gazizova, D.V. Chachkov, M.G. Voronkov ···································································································242<br />
O-47 Stereoselective synthesis and interconversions of 1,9-diaza-3,7,11,15-tetraphospha<br />
cyclohexadecanes R.N.Naumov, A.A.Karasik, A.V.Kozlov, Sh.K.Latypov, D.B.Krivolapov, A.B.Dobrynin,<br />
I.A.Litvinov, O.N.Kataeva, P.Lönnecke, E.Hey-Hawkins, O.G.Sinyashin ·······························································243<br />
O-48 Reactions of phosphonic acids with bases in aqueous solutions Myund, L. A.; Lu, N; Sidorov, Yu. V.,<br />
Burkov, K. A.·····················································································································································244<br />
O-49 Distinct π bonding capability between phosphinidene and phosphonium ion Hisn-Mei Cheng,<br />
San-Yan Chu ·····················································································································································245<br />
O-50 Dimerization and trimerization of phosphaacetylene. a mechanistic study T. Veszprémi, T. Höltzl,<br />
M.T. Nguyen······················································································································································246<br />
O-52 Bond activation processes in N-heterocyclic phosphines D.Gudat, S.Burck, I.Hajdók, F.Lissner,<br />
M.Nieger···························································································································································247<br />
O-53 Determination of optical purity of aminophosphonates by means of NMR spectroscop E.Rudzińska ·········248<br />
O-54 Phosphorus stabilzes and can be stabilized László Nyulászi······························································249<br />
O-94 Mechanism of amino acids mediated oligomerization into peptides by phosphorus trichloride<br />
W.J.Zhao D.X.Zhao K.Lu ···································································································································250<br />
P-103 Mechanism of amino acids mediated oligomerization into peptides by phosphorus trichloride<br />
Wenjie Zhao, Dongxin Zhao, Kui Lu ···················································································································251<br />
P-137 Can four membered heterophosphete structures exist? “Heterogen” hetero antiaromaticity as a<br />
destabilizing effect Zoltán Mucsi, Tamás Körtvélyesi, Tibor Novák, György Keglevich·······························252<br />
P-155 Synthesis and mechanism studies on amide bond by hexamethylphosphoramide(HMPA)<br />
Jianbo Hou, Tongjian Wang, Kan Lin, Guo Tang, Yufen Zhao ··············································································253<br />
P-163 Interaction of 2H-1,2,3-diazaphosphole with diols M.A.Khusainov, R.A.Cherkasov, N.G.Khusainov ,<br />
O.A.Mostovaya, I.F.Gataulina····························································································································254<br />
P-169 Locating the reaction paths of N-(dialkyloxyphosphoryl) amino acids by Nudged Elastic<br />
Band(NEB) method NI, F.; Zeng, Z. P.; Zhao, Y. F ·················································································255<br />
P-194 The formation mechanism of the α-hydroxyphosphonate: a theoretical study Zeng Zhiping,<br />
Fang Hua, Zhao Yufen ·······································································································································257<br />
P-182<br />
31<br />
P NMR assay of the enantiomeric excess by using quinine as chiral solvating agent Liu Ruoyu,<br />
Ye Yong, Chen Xiaolan , Liao Xincheng, Zhao Yufen····························································································258<br />
XII
Symposium 6<br />
PHOSPHORUS COMPOUND AND MEDICINAL CHEMISTRY<br />
KL-9 A correlation of antiresorptive structure activity relationships in nitrogen-containing<br />
bisphosphonates Co-crystalized in farnesyl diphosphate synthase suggests their binding mode<br />
F. H. Ebetino, B. L. Barnett, B. A. Kashemirov, C. Roze, C. E. McKenna, J. Hogan, A. G. Evdokimov, M. E.<br />
Pokross, J. Dunford, Z. Xia, K. Kavanagh, R. G. G. Russell··················································································259<br />
KL-10 Specificity of phosphothreonine recognition by FHA domains Ming-Daw Tsai ·····························260<br />
KL-18 Phosphonate analogs for drug design Charles E. McKenna ·································································261<br />
KL-20 Chiral functionalized phosphonates with biological significance Chengye Yuan······························262<br />
IL-19 Stereocontrolled synthesis of phsophorothioate DNA and RNA by the oxazaphospholidine<br />
approach Takeshi Wada ···························································································································263<br />
IL-20 3',5'-cyclic diguanylic acid and related compounds: synthesis, chemical properties, and biological<br />
activities Yoshihiro Hayakawa ··················································································································265<br />
IL-23 Synthesis of dinucleoside phosphates from c-di-GMP to AZTppppA Zhaoying Zhang, Qianwei Han,<br />
Jianwei Zhao, Barbara L. Gaffney, Roger A. Jones ······························································································266<br />
IL-24 The effects of revisible phosphorylation on peptide and protein local structure Yan-Mei Li,<br />
Yu-Fen Zhao ·····················································································································································267<br />
IL-25 All phosphates are not born chemically equal in RNA Jyoti Chattopadhyaya··································268<br />
IL-26 Design, synthesis and biological activity of α-amino-substituted thiophosphate-phosphonates and<br />
novel naphthoquinone fused phosphorus heterocycles Zhanwei Cui ,Zhiwei Mia, Jianfeng Zhang,<br />
Ruyu Chen ························································································································································269<br />
IL-27 Recent advances in carbamoylphosphonate based matrix metalloproteinase (MMP) inhibitors.<br />
a class of non-toxic in-vivo active drug candidates Eli Breuer ···························································271<br />
IL-48 Novel functionality in organophosphorus chemistry Koop Lammertsma ···········································272<br />
IL-64 Studying the phosphorylation of flavonoids E. E. Nifantyev, M. P. Koroteev, G. Z. Kaziev, T. Wang,<br />
L. H. Cao ··························································································································································273<br />
O-56 Cationic lipids based on phosphonate & phosphoramidate chemistry: synthesis and application<br />
to gene therapy Paul-Alain Jaffrès, Mathieu Mével, Jean-Jacques Yaouanc, Jean-Claude Clément,<br />
Dominique Cartier, Laure Burel, Philippe Giamarchi, Tristan Montier, Pascal Delépine, Pierre Lehn, Claude<br />
Férec, Chantal Pichon, Patrick Midoux ··············································································································274<br />
O-57 Enantiomeric separation of a novel α-anminophosphonates containing benzothiazol moiety by<br />
liquid chromatography using amylose stationary phase Ping Lu, Baoan Song, Deyu Hu,<br />
Song Yang, Linhong Jin, Wei Xue, Yuping Zhang·································································································275<br />
O-58 BEAD-based approaches to develop thioaptamers for diagnostics and therapeutics Xianbin Yang,<br />
Duane Beasley, Bruce A. Luxon, Johnnie Engelhardt, Mark Shumbera, David G. Gorenstein ·································276<br />
O-59 Design and construction of diagnostic chips for cancers Anna Czernicka and Paweł Kafarski············277<br />
O-62 Factors that may predict clinical potencies of nitrogen-containing bisphosphonates; novel<br />
methods dissociate enzyme- and hydroxyapatite-binding affinities Z.Xia,J.Dunford,<br />
M.A.Lawson, J.T.Triffitt, B.L.Barnett, C.Roze, B.Kashemirov, C.E.McKenna, F.H.Ebetino, R.G.G. Russell ·············278<br />
O-63 Novel organophosphorus inhibitors of glutamine synthetase Łukasz Berlicki, Agnieszka Grabowiecka,<br />
Giuseppe Forlani, Paweł Kafarski ······················································································································279<br />
XIII
O-67 Investigations into the oxidative stability of hydroxymethyl- and bis(hydroxymethyl)phosphines<br />
D. V. Griffiths, H. J. Groombridge ······················································································································280<br />
O-69 Organophosphonate inhibitors of cathepsins Paweł Kafarski···························································281<br />
O-70 Synthesis and dental aspects of 1,3-bis(methacrylamido)propane-2-yl dihydroxyphosphate<br />
F. Zeuner, N. Moszner, J. Angermann ·················································································································282<br />
O-71 New efficient synthesis of 2-substituted benzothieno[3,2-d]pyrimidin-4(3H)-ones via an<br />
iminophosphorane Sheng-Zhen Xu, Yang-Gen Hu, Ming-Wu Ding··························································283<br />
P-3 Calixarene methylenebisphosphonic acids: alkaline phosphatase inhibition and docking studies<br />
A. Vovk, V. Kalchenko, O. Muzychka, V. Tanchuk, I. Muravyov, A. Shivanyuk, S. Cherenok, V. Kukhar···················284<br />
P-5 α-(N-benzylamino)benzylphosphonic acids: stereoselectivity of binding to prostatic acid<br />
phosphatase O.I. Kolodiazhnyi, A.I.Vovk, I.M. Mischenko, S.V. Tanchuk, G.A. Kachkovskyi, S.Yu. Sheiko,<br />
V.P. Kukhar ······················································································································································285<br />
P-11 Geranyl and farnesyl bisphosphonates inhibit protein geranylgeranylation through ggpp<br />
depletion Andrew J. Wiemer, Huaxiang Tong, David F. Wiemer, Raymond J. Hohl. ·····································286<br />
P-39 Preparation of new [1,4,2]-oxazaphosphinanes: potentially antidepressive agent David Virieux,<br />
Jean-Noël Volle, Jean-Luc Pirat ·························································································································287<br />
P-40 Antitumor effect of betaine and its impact on the phosphorylation process of rats bearing S180<br />
Ji Yu-Bin, Zhang Yu-Jin ·····································································································································288<br />
P-54 Synthesis and seperation of L-trytophan oligo-peptides assisted by phosphorus oxychloride<br />
Li Ma, Hai-ping Ren, Kui Lu,Yu-fen Zhao ···········································································································289<br />
P-66 Thioureido derivatives of methylenebisphosphonic acid as potential inhibitors of alkaline<br />
phosphatases M. Lozynsky, A. Vovk, A. Chuiko, L. Kononets, V. Tanchuk, I. Muravyova, V. Kukhar·············290<br />
P-67 Phosphoryl substituted 3,5-bis(arylidene)-4-piperidones posessing high antitumor- activity M.V. Makarov,<br />
I.L. Odinets, O.I. Artyushin,E.Yu. Rybalkina, K.A. Lyssenko, T.V. Timofeeva, M.Yu. Antipina ·································291<br />
P-77 New polyamines phosphoramidate vectors for gene therapy Mathieu Mével, François Lamarche,<br />
Jean-claude Clément, Jean-jacques Yaouanc, Laure Burel, Philippe Giamarchi, Tristan Montier, Pascal Delépine,<br />
Pierre Lehn, Paul-Alain Jaffrès, Claude Férec.····································································································292<br />
P-79 Synthesis and drug release behavior of unsaturated polyphosphoester Qiu Jin-Jun, Bao Rui,<br />
Liu Cheng-Mei ··················································································································································293<br />
P-80 In vitro degradation properties of unsaturated polyphosphoester β-tricalcium phosphate<br />
composites Qiu Jin-Jun, Bao Rui, Liu Cheng-Mei ······················································································294<br />
P-82 The synthesis, acid-basic and membrane-transport properties of the phosphorylated amines<br />
Rafael A. Cherkasov, Airat R.Garifzjanov, Maxim V. Khakimov, Alexey S. Talan, Gul’nara A. Ivkova·····················295<br />
P-102 Identification of self-assembly products of valine mediated by phosphorus trichloride by ESI<br />
mass spcetrometry Wenjie Zhao, Li Ma, Kui Lu, Yufen Zhao ····································································296<br />
P-108 Discovery of alkenylphosphorus compounds as a new class of cytotoxic agents for cancer cells<br />
Xiaohui Wang, Li-Biao Han ·······························································································································297<br />
P-109 The synthsis of tripyrrole peptide containing phosphonyl Li-feng Cao, Li-li Shen, Ru-yi Zou,<br />
Cun-jiang Liu, Yong Ye, Xin-cheng Liao, Yu-fen Zhao··························································································298<br />
P-142 Developing a simple assay to screen for organophosphatases Gareth Williams ································299<br />
P-143 The pharmacokinetics analysis of the phosphoryl peptides in MCF-7/ADR cells Peng Zhang,<br />
Hongxia Liu, Zhenhua Xie ,Feng Liu, Mian Liu ,Yuyang Jiang ·············································································300<br />
XIV
P-145 New phosphoramidate dicationic vectors for gene therapy Mathieu Mével, François Lamarche,<br />
Jean-claude Clément, Jean-jacques Yaouanc, Laure Burel, Philippe Giamarchi, Tristan Montier, Pascal Delépine,<br />
Pierre Lehn, Paul-Alain Jaffrès, Claude Férec ····································································································301<br />
P-146 Novel cidofovir prodrugs: conceptual and synthetic strategies Boris A. Kashemirov, Joy Lynn F. Bala,<br />
Xiaolan Chen, Zhidao Xia, R. Graham G.Russell, Charles E. McKenna ································································302<br />
P-147 Fluorescently labeled risedronate and related analogs: novel synthesis and evaluation as imaging<br />
probes Larryn W. Peterson, Boris A. Kashemirov, John M. Hilfinger, Charles E. McKenna···························303<br />
P-149 Syntheses and characterizations of α-aminophosphonic acids and their derivatives Fang Hua,<br />
Fang Meijuan, Liu Linna, Zhao Yufen·················································································································304<br />
P-150 Ligand-protein inverse docking as a potential tool in the computer search of protein targets of<br />
mycoediketopiperazine, a novel fungal metabolite from a papularia SP. Fang Meijuan, Fang Hua,<br />
Ji Zhiliang, Luo Shun, Zhao Yufen ······················································································································305<br />
P-151 Synthesis of mopholino oligonucleotide with normal phosphate backbone by phosphoramidite<br />
methodology Pu-Qin Cai, Nan Zhang, Chun Guo, Pei-Zhuo Zhang, Yu-Yang Jiang, Yu-Fen Zhao··················307<br />
P-152 Electrospray ionization mass spectra of amino acid methyl ester 5'-phosphoramidates of 2',<br />
3'-isopropylideneuridine Chen Wei-Zhu, Gao Yu-Xing, Zhao Yu-Fen ························································308<br />
P-153 Synthesis and bioactivity of six-ring nucleoside modified siRNA Nan Zhang, Yue Wang, Pu-Qin Cai,<br />
Pei-Zhuo Zhang, Yu-Yang Jiang, Yufen Zhao·······································································································309<br />
P-156 A novel synthesis of o-phosphorylatedn-menthoxy-carbonyl tyrosine Wang Tongjian, Cheng Fang,<br />
Tang Guo, Zhao Yufen ·······································································································································310<br />
P-157 Inhibition of pokemon gene expression by antisense oligonucleotides Nan Zhang, Yue Wang,<br />
Zhen-Hua Xie, Yu-Yang Jiang , Yu-Fen Zhao·······································································································311<br />
P-158 Antisense therapy targeting pokemon oncogene in MCF-7 CEL Lan Zhang, Wen-Peng Li,<br />
Zhen-Hua Xie, Yu-Yang Jiang , Yu-Fen Zhao·······································································································312<br />
P-162 The positive and negative electrospray ionization (ESI) mass spectrometry of<br />
P-197<br />
1-(N-ethoxycarbonylamino) arylmethylphosphonic monoesters Yuan Ma, Wei Liu, Yufen Zhao·········313<br />
The synthesis and biological evaluation of benzamide riboside and its phosphordiamidate<br />
prodrug Jianning Zhou, Nan Zhang, Chunyan Tan, Jian Fan, Chun Guo, Yuyang Jiang ·································313<br />
Symposium 7<br />
PHOSPHORUS CHEMISTRY IN AGRICULTURE, INDUSTRY<br />
AND MATERIALS SCIENCE<br />
KL-12 Overview on op metabolism chemistry and its relationship to biological and toxic actions Philip W. Lee ·····315<br />
IL-33 Food safety: monitoring of organophosphate pesticide residues in crops and food Canping Pan ·····316<br />
IL-34 The role of phosphorus in crop protection: experimental and commercial disease and weed<br />
control agents Roger G. Hall····················································································································317<br />
IL-35 The use of op and development of new organophosphorus agrochemicals in China Hong-wu He ··318<br />
IL-36 Current status of organophosphorus insecticide and stereochemistry Mitsuru Sasaki······················319<br />
IL-37 Global use of organophosphorus pesticides William H. Hendrix, III,···················································320<br />
O-85 “Green” ways of phosphorus compounds preparation Budnikova Yu.H., Krasnov S.A., Graznova T.V.,<br />
Tomilov A.P., Turigin V.V., Magdeev I.M.., Sinyashin O.G. ··················································································321<br />
XV
O-86 Phosphate - an important element in the agricultural and environmental sphere Dirk Freese·······323<br />
O-88 Phosphate removal and recovery with calcined layered double hydroxides as an adsorbent<br />
Liang Lü , Zhaoliang Zhou , Jing He , Yulin Wang , Guoqiang Wu········································································325<br />
O-89 Development, scaleup and commercialisation of catalyst lignds Ranbir Padda and Gordon Docherty 326<br />
O-90 Bleaching chemisty of tris(hydroxymethyl)phosphine and tetrakis(hydroxymethyl)phosphonium<br />
sulfate Thomas Q. Hu , Brian R. James , Richard Chandra , Eric Yu, Dmitry Moiseev···································327<br />
O-91 Use of ion exchange composites based of titanium and zirconium phosphates for cleaning of<br />
water solutions Valery P. Nesterenko·······································································································328<br />
O-92 Selective chromium oligomerisation catalysts with various phosphorus ligands Kevin Blann,<br />
John T. Dixon, Esna Killian, Hulisani Maumela, M., Chris Maumela, Ann E. McConnell, David H. Morgan, Mari<br />
Pretorius, Henriette de Bod, William Gabrielli, Alex Willemse, Pumza Zweni, Palesa Nongodlwana·······················329<br />
O-94 An efficient catalytic asymmetric synthesis and biological evaluation of α-substituted aroyloxyl<br />
phosphonates Hui Liu, Hongwu He, Wen-Jing Xiao ················································································330<br />
O-95 Controlled synthesis of organic-inorganic materials derived from phosphorous compounds.<br />
variable porosity, photoinduced electron-transfer and hydrogen storage Ernesto Brunet,<br />
Olga Juanes, Juan Carlos ··································································································································331<br />
O-108 Study on the preparation of wheat starch phosphate with low degree of substitution Liu Zhongdong,<br />
Yang Yan ··························································································································································333<br />
P-8 Structural characteristic and electrode activities of phosphorus incorporated tetrahedral<br />
amorphous carbon films Aiping Liu, Jiaqi Zhu, Jiecai Han, Huaping Wu·················································334<br />
P-12 Electron conducting materials on the basis of perfluorophenylene-phosphanes Berthold Hoge,<br />
Sonja Hettel, Nina Rehmann·······························································································································335<br />
P-13 Synthesis and cytotoxic evaluation of novel naphthoquinone fused phosphorus heterocycles Bin Wang,<br />
Zhiwei Miao, You Huang, Ruyu Chen, Jie Wang ··································································································336<br />
P-16 1,3,4-oxazodizaole containing cyclo- and polyphosphazene Chen Zhao, Rui Bao, Jin-jun Qiu,<br />
Cheng-mei Liu···················································································································································338<br />
P-19 Stereoselective synthesis and biological activities of O-(E)-1-{1-[(6-chloropyridin-3-yl)methyl]<br />
-5-methyl-1h-1, 2, 3-triazol-4-yl}ethyleneamino O-ethyl O-aryl phosphorothioates De-qing Shi····339<br />
P-27 The influential factor of temperature on synthesis of L-arginine oligo-peptides mediated by<br />
phosphorus oxychloride Haiping Ren , Li Ma , Kui Lu··········································································340<br />
P-28 Distribution and concentration of total nitrogen, total phosphorous and total organic carbon in<br />
South Sea, China Haiyan Wang,Daxiong Han,Jianyun Lin································································341<br />
P-29 Molecular docking of substituted alkylphosphonates to pyruvate dehydrogenase Hao Peng,<br />
Hong-Wu He ·····················································································································································342<br />
P-32 A practical route to synthesis some phosphorylated prodrug Hong-bo Zhang, Ren-Zhong Qiao,<br />
Yufen Zhao························································································································································343<br />
P-53 Ultrasonic photocatalytic degradation of the pesticide “methyl parathion” LI He-ping ··················344<br />
P-56 Application of tetrakis hydroxymethyl phosphonium in leather production Li Ya, Shao Shuangxi,<br />
Jiang Lan, Han Ying, Shi Kaiqi···························································································································345<br />
P-58 The synthesis of N-hydroxymethyl-3-(dialkylphosphono) propionamide Xiao-lian Hu, Ru-yi Zou,<br />
Shang-bin Zhong, Jun-liang Yang, Zhi-yu Ju, Yong Ye, Xin-cheng Liao, Yu-fen Zhao·············································346<br />
XVI
P-60 Electrospray ionization tandem mass spectrometry of N-phosphoryl-α-, β- and γ- amino acids<br />
Liming Qiang, Shuxia Cao, Jianchen Zhang, Xincheng Liao, Yufen Zhao ······························································347<br />
P-63 Sediment phosphorus buffering capacity in drainage ditch in hilly area of purple soil, China<br />
Luo Zhuan-xi1, Zhu Bo,Wang Tao ······················································································································348<br />
P-83 Liquid crystalline behavior of cyclotriphosphazene Rui Bao, Chen Zhao, Jin-jun Qiu, Cheng-mei Liu ··349<br />
P-84 Monitoring influence of reaction conditions on self-assembly into oligo-peptides for three<br />
sulf-amino acids by using ESI-MS Kui Lu,Rui Li,Li Ma ··································································350<br />
P-90 Isolation and determination of diastereoisomers of amino acid hydridophorane by<br />
HPLC-ESI-MS Shuxia Cao, Yali Xie, Jinming Liu, Yanchun Guo, Xincheng Liao, Yufen Zhao ····················351<br />
P-97 Synthesis of long chair organophosphorus compounds on the basis of industrial fractions of<br />
higher olefins Il’yas S. Nizamov, Yan Ye. Popovich, Yevgeniy S. Ermolaev, Il’nar D. Nizamov,<br />
Gulnur G. Sergeenko, Vladimir A. Alfonsov,Elvira S. Batyeva, Magdeev I.M., Reznik V.S., Sinyashin O.G.,<br />
Yarullin R.S.······················································································································································352<br />
P-107 Synthesis and biological activities of O,O-dialkyl 1-((2-chlorothiazol-5-yl or 6-chloropyridin-3-yl)<br />
methyl -4-methyl-1h-1, 2, 3-triazol-4-yl-5-carbonyloxy substituted methyl phosphonates Xiao-Bao<br />
Chen, De-Qing Shi·············································································································································353<br />
P-110 Determination of orgranophosphorous pesticides using phosphorous ionic liquid as extraction<br />
and LPME-HPLC Xie Hongxue, He Lijun, Wang Meimei, Wu Xiuling, Wu NaNa········································354<br />
P-111 Synthesis and thermal property of bis(1-oxo-2,6,7-trioxo-1-phosphabicyclo[2,2,2]octane<br />
-4-methanoic)-2,2-dimethyl-1,3-propanediester Xi-Jun Sheng, Zheng-Qiu Li, Hong-Wu He···················356<br />
P-116 The improved method for the industrial scale preparation of adenosine cyclophosphate (cAMP)<br />
Xiu Qiang Wang, Dong Chao Wang, Ran Xia, Zhi Guang Zhang, Hai Ming Guo, Gui Rong Qu······························357<br />
P-122 Synthesis and herbicidal activity of α- [2-(fluoro-substituted phemoxy)-propionyloxy]<br />
alkylphosphonates Yan-Jun Li Hong-Wu He·························································································358<br />
P-126 Synthesis, crystal structure and bioactivities of dimethyl[(3,7-dichloroquinolin-8-yl carbonyloxy)<br />
alkyl] phosphonate Ying Liang, Ya-Zhou Wang, Hong-Wu He ··································································359<br />
P-131 Long-persistent fluorescent films of europium and dysprosium co-doped aluminates Yuan Ming Huang,<br />
Fu-fang Zhou ····················································································································································362<br />
P-133 Ab initio study on the toxicity of organic phosphorus agrochemical Zhang Yu·······························362<br />
P-136 Pattern of sediment phosphorus fractions in a shallow wuliangsuhai lake, China: effects of<br />
macrophytes Zhenying Liu, Zhaohui Jin, Yawei Li, Tielong Li, Jiujun Gu, Si Gao, Xiaoyu Chai ···················363<br />
P-166 New functionalized phosphoryl membrane carriers of organic and nonorganic substrates<br />
Krasnova N.S., Garifzyanov A.R., Cherkasov R.A.································································································364<br />
P-173 High throughput screening under Zinc-database and synthesis a dialkylphosphinic acid as a<br />
potential KARI inhibitor Liu Xinghai, Chen Peiquan, Guo Wancheng, Wang Suhua, Li Zhengming·················365<br />
P-191 Investigation on the peptides formation from amino acids reacted with trimetaphosphate by<br />
LC-MS Xiang Gao, Yan Liu, Pengxiang Xu, Guo Tang, Yufen Zhao ····························································369<br />
Symposium 8<br />
SPECIAL SESSION DEDICATED TO THE LATE PROFESSOR L. HORNER<br />
KL-4 Olefination reaction in organic sulfur chemistry and synthesis of natural products Marian Mikolajczyk ···371<br />
XVII
IL-3 2-hydroxy- and 2-amino-functional arylphosphines-synthesis, reactivity and use in catalysis J. Heinicke,<br />
W. Wawrzyniak, N. Peulecke, B. R. Aluri, P.G. Jones, S. Enthaler, M. Beller ······················································372<br />
IL-4 Enantioselective synthesis of P-chirogenic phosphorus compounds via the ephedrine-borane<br />
complex methodology Sylvain Juge·········································································································373<br />
IL-5 Umpolung in Horner reaction: phosphoramidates as a source of P-chiral organophosphates<br />
Wojciech Jacek Stec and Janina Baraniak···········································································································375<br />
IL-6 Synthesis and applications of phosphonates prepared from electrophilic phosphorus reagents<br />
David F. Wiemer ···············································································································································376<br />
IL-7 Development of novel chiral phosphorus ligands for enantioselective homogeneous and<br />
heterogeneous catalysis Kuiling Ding·····································································································377<br />
O-34 Chiral phosphorus-contained calixarenes S.O.Cherenok, V.I.Boiko, V.I.Kalchenko ······························379<br />
AUTHOR INDEX .............................................................................................................. 381<br />
XVIII
Plenary Lecture
PL-1<br />
STRUCTURE AND REACTIVITY OF INORGANIC PHOSPHORUS COMPOUNDS<br />
Francois Mathey<br />
Physical Sciences Unit 1 424, University of California, Riverside, CA 92521, USA<br />
This lecture highlights a few recent developments in organophosphorus chemistry. A first<br />
identified trend is directed toward very simple molecules such as P2 and PC - . A second trend is<br />
directed toward complex molecules such as organophosphorus polymers and phosphaporphyrins. A<br />
third trend concerns new applications such as hydrogen storage, optoelectronic devices and killer<br />
cells growth.<br />
1
PL-2<br />
PHOSPHATE - THE CORNERSTONE OF LIFE<br />
G. Micheal Blackburn<br />
Krebs Institute, Department of Chemistry , Sheffield University, Sheffield, S3 7HF, UK<br />
Phosphate monoesters and diesters have well-known roles in genetic materials, in co-enzymes, in<br />
energy reservoirs, as intermediates in biochemical transformations, and in the regulation of<br />
biological activity through protein phosphorylation. Their enormous kinetic stability is at the heart<br />
of these functions. Alkyl phosphate dianions have rates of spontaneous hydrolysis of 2 x 10 -20 s -1<br />
and dimethyl phosphate has kuncat 10 -15 s -1 at 25˚C. Thus, enzymes that hydrolyse or transfer the<br />
phosphoryl group manifest some of the largest rate accelerations known. Staphylococcal nuclease<br />
accelerates P-O bond fission by at least 10 16 -fold while phosphate monoesterases show rate<br />
accelerations ~10 21 -fold in some cases.[1,2]<br />
Investigations of enzyme mechanisms have been very successful in defining the stereochemistry<br />
of phosphoryl group transfer – usually inversion of configuration with some examples of retention<br />
involving double inversion). Kinetics, isotopic methods, pH-rate profiles, and other physical<br />
organic chemistry tools have sought generally to differentiate between three possible mechanisms:<br />
• A dissociative, SN1-type mechanism (DN + AN, in IUPAC nomenclature) that involves a stable<br />
metaphosphate anion PO3 – ;<br />
• An associative, two-step, addition–elimination mechanism (AN + DN) that involves a<br />
penta-covalent phosphorane intermediate; and<br />
• A concerted. SN2-like mechanism (ANDN) with no intermediate.<br />
In purely chemical reactions, phosphate monoesters generally follow a dissociative pathway with a<br />
loose transition state while phosphate diesters usually react via a synchronous transition state.[1]<br />
X-ray structures of enzymes that catalyse phosphoryl transfer reveal that they share limited<br />
similarity through having positive charge in the active site, either from cationic amino acid<br />
side-chains (His, Lys, Arg) or from metal ions (Mg, Zn, etc), but little else. Because of the<br />
difficulties in separating effects of systematic structural variation of substrates on Km and kcat,<br />
general physical methods have provided results that are less clear-cut than for model systems.[1] As<br />
a result, much reliance has been placed on the interpretation of structures of complexes of enzymes<br />
with substrate or product analogues to give mechanistic information, though this is unavoidably<br />
based on a ground-state complex. Approaches to transition states have been hampered by the<br />
instability of acyclic dialkyl pentaco-ordinate phosphoranes and the absence of alternative, reliable<br />
transition-state analogues. Among the most successful, the aluminium tetrafluoride anion has<br />
provided structures of several enzyme complexes, although it necessarily has an octahedral<br />
aluminium core replacing a pentacovalent phosphorus species.<br />
Magnesium trifluoride, MgF3 – , has been assigned [3,4] and under-assigned [5] as the molecular<br />
core seen in X-ray structures of trigonal-bipyramidal species (TBP) of enzymes catalysing<br />
phosphoryl transfer. A structure of ß-phosphoglucomutase (ßPGM) complexed with glucose<br />
6-phosphate (G6P) has been mis-represented as a pentacovalent tbp phosphorus intermediate [1,5]<br />
while our alternative interpretation of MgF3 – as the core tbp species[6], endorsed by computational<br />
analysis,[7] was at first rejected [8] but later fully substantiated. Kinetic, spectroscopic, and<br />
structural data confirm MgF3 – as a TSA for ßPGM.[9] Fluoride is a potent inhibitor for ßPGM and<br />
2
19 –<br />
F NMR analysis shows three F ions are recruited into the active site of the enzyme in the<br />
presence of G6P. NOE analysis using 15 N, 2 H-labelled identifies 5 amino acids in close contact with<br />
two fluorides while the third F – is co-ordinated to a catalytic Mg 2+ ion and to the hexose 2-OH<br />
group. These data [9] accurately locate the binding site for the magnesium ion, which is further<br />
co-ordinated to G6P C 1 -OH group and to Asp-8, and are totally in accord with the published X-ray<br />
structure.[4,7]<br />
In examples of metal fluoride complexes of phosphoryl transfer enzymes identified solely by<br />
x-ray analysis, the presence of F – (rather than OH – ) has necessarily been inferential at the<br />
resolutions achieved. Our results [9] thus constitute the first direct observation of a metal fluoride<br />
complex as a TSA for a phosphoryl transfer enzyme. † The bonding in the tbp accurately portrays<br />
the transition state for phosphoryl transfer in ßPGM and reveals the details of protein catalysis.<br />
Because the MgF3 – species is both isoelectronic and isosteric with metaphosphate, PO3 – , it is a<br />
near-perfect transition state analogue for phosphoryl transfer and can provide details of<br />
mechanisms of enzyme catalysis not hitherto available. Most importantly, re-calculation of the<br />
electron-density data for the MgF3–ßPGM complex (PDB accession 1O08 [4]) provides hydrogen<br />
bond lengths for the transition state for phosphoryl transfer at 1.2Å resolution that show no<br />
evidence for short, strong hydrogen bonds![11]<br />
A kindred situation has been identified for F1ATPase [4a] which enables a direct comparison of<br />
beryllium, aluminium, and magnesium fluoride structures.[4b, and Plenary Lecture by J.E.Walker]<br />
Several enzyme structures have been reported in which AlF3 has been identified a tbp TSA for<br />
phosphoryl transfer.[12] We have explored this situation for βPGM and also for a phosphoserine<br />
phosphatase in competition with MgF 3- by 19 F NMR and will report surprising developments.[10]<br />
They expose the risks inherent in an isolated x-ray crystallographic approach to enzyme<br />
mechanisms for phosphoryl transfer and further illuminate enzyme mechanisms for phosphoryl<br />
group transfer.<br />
References<br />
1. Cleland, W.W.; Henge, A.C. Chem.Rev., (2006) 106, 3252-3278.<br />
2. Lad, C.; Williams, N.H.; Wolfenden, R. J. Amer. Chem. Soc. (1998) 120, 833-837.<br />
3. Graham, D.L.; Lowe, P.N.; et al. Chem. Biol. (2002), 9, 375-381.<br />
4. [a] Bowler, M.F.; Blackburn, G.M.; Leslie, A.G.W.; Walker, J.E. abstr. Gordon conf. Biophys. (2005). [b] “A new<br />
intermediate in the catalytic cycle of bovine mitochondrial F1-Atpase”, Bowler, M.W.; Blackburn, G.M.; Leslie,<br />
A.G.W.; walker. J.w.; Embo J in prepn.<br />
5. Lahiri, S.D.; Zhang, G.; Dunaway-Mariano, D.; et al. Science (Washington, DC, USA) (2003), 299, 2067-2071.<br />
6. Blackburn, G.M.; Williams, N.H.; et. al. Science (Washington, DC, USA) (2003), 301, 1184.<br />
7. Webster, C.E. J. Amer. Chem. Soc. (2004) 126, 6840-6841.<br />
8. Tremblay, L.W.; Zhang, G.; et al. J. Amer. Chem. Soc. (2005), 127, 5298-5299.<br />
9. Baxter, N.J.; Olguin, L.F.; Golicnik, M.; Feng, M.; Hounslow, A.M.; Bermel, W.; Blackburn, G.M.; Hollfelder, F.;<br />
Waltho, J.P.; Williams, N.H. Proc. Nat. Acad. Sci. USA, (2006) 103(40), 14732-14737.<br />
10. Baxter, N.J.; Hounslow, A.M.; Waltho, J.P. unpublished results.<br />
11. Blackburn, G.M.; Gamblin, S.J.; Smerdon, S.L. unpublished data.<br />
12. Inter alia: Schlichting, I.; Reinstein, J.; Nature Struct. Biol. (1999), 6(8), 721-723.<br />
† As opposed to a GTP hydrolase.[3]<br />
3
Symposium 1<br />
Phosphorus in Organic Synthesis & Stereochemistry;<br />
Structure and Reactivity of Organophosphorus Compounds
KL-1<br />
CHEMISTRY OF CARBAPHOSPHATRANES<br />
Takayuki Kawashima<br />
Department of Chemistry, Graduate School of Science, The University of Tokyo<br />
7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan Email: takayuki@chem.s.u-tokyo.ac.jp<br />
Main group atranes are tricyclic compounds that have transannular dative bond from nitrogen to<br />
central main group elements as shown below. The characteristics of proazaphosphatranes<br />
(conjugate bases of azaphosphatranes 1, a typical example of main group atranes), 1 which are<br />
known as basic catalysts, are strongly attributable to the transannular dative bond of nitrogen to the<br />
central phosphorus. Replacement of the dative bond by a covalent bond would supply different<br />
reactivity and structure to the compound. From such a viewpoint, we succeeded in synthesizing<br />
1-hydro-5-carbaphosphatrane 2 as the first main group atrane derivative bearing a 1-5 covalent<br />
bond, which has the perfectly “anti-apicophilic” arrangement. 2 Here we report the synthesis,<br />
structures, and reactions of 1-hydro-6-carbaphosphatrane 3 3 containing a novel tetradentate ligand<br />
with three six-membered rings and its tautomer 4 as well as their comparison with those of<br />
5-carbaphosphatrane 2.<br />
In sharp contrast to 1-hydro-5-carbaphsophatrane 2, 1-hydro-6-carbaphosphatrane 3 was<br />
obtained as a mixture with its tautomer, phosphonite 4. Interestingly, single crystals of 3 and 4<br />
were obtained by the slow evaporation of saturated solutions of a mixture of 3 and 4 in ether or<br />
benzene, respectively, whose crystal structures were determined by X-ray crystallographic analysis.<br />
Oxidation and sulfurization reactions using the mixture of 3 and 4 were found to proceed<br />
quantitatively via trivalent tautomer 4, whereas quantitative hydride abstraction using<br />
triphenylmethyl cation proceeded via pentacoordinate tautomer 3. Theoretical calculations as well<br />
as other reactions including radical reactions will also be discussed.<br />
X<br />
X<br />
1<br />
E<br />
N<br />
5<br />
2<br />
X<br />
3<br />
4<br />
main group atranes<br />
E= main group element<br />
X= O, NR<br />
R<br />
R<br />
N<br />
N<br />
H R<br />
P<br />
N<br />
1<br />
N<br />
+<br />
R<br />
R<br />
O<br />
O<br />
5<br />
H<br />
P<br />
C<br />
O<br />
R<br />
R<br />
R<br />
O<br />
O P<br />
C<br />
H<br />
O<br />
R<br />
O<br />
O<br />
R<br />
R<br />
2 (R= t-Bu) 3 (R= t-Bu) 4 (R= t-Bu)<br />
References<br />
1. J. G. Verkade, Coord. Chem. Rev. 1994, 137, 233.<br />
2. J. Kobayashi, K. Goto, T. Kawashima, J. Am. Chem. Soc. 2001, 123, 3387; J. Kobayashi, K. Goto, T. Kawashima, M.<br />
W. Schmidt, S. Nagase, J. Am. Chem. Soc. 2002, 124, 3703.<br />
3. S. Nakafuji, J. Kobayashi, T. Kawashima, M. W. Schmidt, Inorg. Chem. 2005, 44, 6500.<br />
P<br />
C<br />
R<br />
OH
KL-2<br />
DEVELOPMENT METHODS SYNTHESIS OF POLYHETEROPHOSPHACYCLANES<br />
WITH ENDOCYCLIC P-C BOND ON THE BASIS OF FUNCTIONALIZED<br />
ALKYLPHOSPHONATES(-PHOSPHINATES)<br />
M.A.Pudovik, N.A.Khailova, R.Kh.Bagautdinova, S.A.Terent’eva, L.K.Kibardina<br />
A. E. Arbuzov Institute of Organic and Physical Chemistry, Kazan Scientific Centre of the Russian Academy of<br />
Sciences, Arbuzov Str. 8, 420088 Kazan, Russian Federation<br />
Within the direction, devoted evolution methods synthesis of polyheterophosphacyclanes with<br />
endocyclic P-C bond, two approaches.have obtained a development First is based on the reactions<br />
of intramolecular cyclization of polyfunctional phosphonates(-phosphinates), where phosphorus<br />
atom is connected with halogenalkylgroups, in combination with other structural fragments (ureas,<br />
thioureas, thiouretanes, thioamides etc.). They can be easily obtained by addition proton<br />
nucleophiles to chloromethylphosphonylated(-phosphinilated) isocyanates or isothiocyanates.<br />
Polyfunctional P(IV) derivatives in most cases at the presence of a base undergo intramolecular<br />
cyclization with the formation of saturated or unsaturated cyclic structures with endocyclic P-C<br />
bond.<br />
R<br />
Hal(CH2)n PNCX<br />
Y<br />
+ ZH<br />
R<br />
Hal(CH2)n PNHC(X)Z<br />
Y<br />
B<br />
-B . HCl<br />
Y<br />
R P<br />
(CH2) n<br />
N<br />
X<br />
Z<br />
n= 1; 2 X=O; S Y= O; S Z= NH2; NHAlk; NAlk2; OR; SR; Ph2P Hal= Cl; Br<br />
O<br />
O<br />
X<br />
H<br />
PhO<br />
HalCH2 PNCS<br />
ROH PhO<br />
HalCH2 PNHC(S)OR<br />
-RCl<br />
PhO P<br />
N<br />
S<br />
C=O<br />
In a number of cases reactions proceed stereoselectively with the preferred formation one of the<br />
diastereomers; that has allowed to obtain cyclic compounds in optically pure stste.<br />
For example, as a result of the reaction chiral O-phenyl(chloromethyl)isothiophosphonate with<br />
(R)-(+) or (S)-(-) (1-phenyl) ethylamines 2-(1-phenyl)ethylamino-4-thioxo-4-phenoxy<br />
-1,3,4-thiazaphosphol-2-ines were isolated in optically pure form.<br />
Ph<br />
(PhO) 2P(O)CHNHMe + ArNCX (PhO) 2P(O)CHN-C-NHAr<br />
X= O; S<br />
6<br />
Ph<br />
Me<br />
X<br />
PhO<br />
O<br />
P<br />
Ph<br />
CH<br />
N Me<br />
-PhOH N<br />
Ar C<br />
Second approach is based on the employment α- and β-aminoalkylphosphonates as the basic<br />
compounds, including optically active. As a result of addition them to isocyanates or<br />
isothiocyanates phosphorus containing ureas or thioureas are formed, which are cyclized with<br />
evolving of phenol molecule.<br />
Acknowledgement. This study was supported by the Russian Foundation for Basic Research (grant<br />
no. 06-03-32085).<br />
X
KL-3<br />
RINGS AND CAGES DERIVED FROM PHOSPHA-ALKYNES<br />
John Nixon<br />
Chemistry Department, School of Life Sciences, University of Sussex, Falmer, Brighton, BN19QJ, Sussex, UK<br />
Phosphaalkynes, typified by Bu t CP, are excellent building blocks for synthesising a range of<br />
unsaturated organophosphorus rings systems as well as cages. The lecture will discuss the<br />
4-membered 1,3-diphosphacyclobutadiene ring, 5-membered polyphospholyl ring anions P3C2Bu t 2<br />
and P2C3Bu t 3 and the 1,3,5-triphosphabenzene, P3C3Bu t 3, including new synthetic routes and their<br />
likely mechanisms. Some main group element and transition metal complexes will also be<br />
discussed.<br />
Oxidation of the ring anion P3C2Bu t 2 affords the hexaphospha-pentaprismane cage, P6C4Bu t 4<br />
which undergoes specific insertion reactions between the two phosphorus atoms that connect the<br />
two 5-membered rings, when treated with “carbene-like” fragments E, (E = S, Se, Te, R2M, (M<br />
=Ge, Sn and Pb), to afford the cage compounds EP6C4Bu t 4. Ready insertion of the isolobally related<br />
[Pt(PPh3)2] also occurs, however a different type of reaction occurs with [PtCl2] involving both<br />
insertion into the cage and Cl migration from platinum to phosphorus . Interesting features of these<br />
structures and their NMR spectra will be presented and discussed.<br />
* In collaboration with Laszlo Nyulaszi, Guy Clentsmith, Matthew Francis, Mahmoud Al-Ktaifani, Peter Hitchcock,<br />
Phil Power, Scott Clendenning, Tony Avent, Michael Lappert, Philip Merle, Philip Uiterweerd and Monte Helm. The<br />
research was funded by the EPSRC and the Royal Society.<br />
7
IL-1<br />
METAL-MEDIATED P-H ADDITION AS A POWERFUL TOOL FOR THE<br />
CONSTRUCTION OF C-P BONDS: FROM ACADEMIC INTERESTS TO<br />
PRACTICAL APPLICATIONS<br />
Li-Biao Han<br />
National Institute of Advanced Industrial Science and Technology<br />
Tsukuba, Ibaraki 305-8565, Japan; Email: libiao-han@aist.go.jp<br />
Compared to the progress in regio- and stereocontrol in carbon-carbon bond-forming reactions,<br />
the precise synthesis of organophosphorus compounds (efficient and controlled phosphorus-carbon<br />
bond-forming reactions) remains rather undeveloped. This situation hampers further exploration on<br />
the applications of these compounds in material and medicinal chemistry which demand a huge<br />
chemical pool of structurally well defined functional organophosphorus. Since our first report on<br />
the palladium-catalyzed addition of H-phosphonates to alkynes in 1996, we have been<br />
concentrating on the development of practically useful new reactions for the synthesis of<br />
organophosphorus compounds (see below). Some of them are currently being evaluated by the<br />
industry showing that kilograms of alkenylphosphinates can be easily generated by using a trace<br />
amount (
(d) Pd and Rh-catalyzed P(O)-H addition to isocyanides<br />
R-NC + R'2P(O)H cat. Pd<br />
R'2(O)P N<br />
cat. Rh<br />
R<br />
HN<br />
R'2(O)P R<br />
9<br />
P(O)R' 2<br />
(e) Rh-catalyzed homo- and heterodehydrocouplings of P-H bonds<br />
RPH2 Rh cat. (RPH) 2 + H2 Ph<br />
(R2PH) [(R<br />
2PH +<br />
Rh cat.<br />
PhSH<br />
2P) 2]<br />
(2) Optically active phosphorus compounds<br />
RO<br />
R'<br />
R = (-)menthyl<br />
P<br />
O<br />
H<br />
Ph<br />
1 Rp<br />
+<br />
R2 H P<br />
O R<br />
O<br />
O<br />
1<br />
R2 R1 cat. [Pd]<br />
cat. [Rh]<br />
O<br />
RO P<br />
O<br />
RO P<br />
Pd(OAc) 2 (5 mol %),<br />
L (7.5 mol %), additive<br />
Dioxane, 100 oC (3) New-phosphorus containing polymers<br />
O O<br />
H P Ar P H<br />
X X<br />
R<br />
Ph<br />
Ph<br />
R'<br />
R'<br />
O R<br />
P O<br />
O<br />
1<br />
R2 R1R2 up to 88.5% ee<br />
cat. Rh<br />
condition A<br />
O<br />
RO<br />
P<br />
Ph<br />
+<br />
H<br />
R = (-)menthyl<br />
cat.Ni/Ph 2P(O)OH<br />
condition B<br />
L =<br />
R'<br />
R' 2P<br />
O<br />
P<br />
R<br />
O<br />
P<br />
R<br />
Fe<br />
O<br />
Ar P<br />
R<br />
O<br />
Ar P<br />
AIBN or base<br />
Ph 2PSPh<br />
stereoretention<br />
PR 2<br />
CH 3<br />
H<br />
R<br />
R<br />
R<br />
n<br />
RO P<br />
n<br />
+ H 2<br />
(4) A novel new class of potent anticancer agents<br />
New organophosphorus compounds showing strong anticancer activity towards several tumor cell<br />
lines have been revealed (will also be presented in the poster section).<br />
This work was partially supported by New Energy and Industrial Technology Development Organization (NEDO) of<br />
Japan (Industrial Technology Research Grant Program in 2004).<br />
References<br />
T. Hirai and L.-B. Han, J. Am. Chem. Soc. 2006,128, 7422; L.-B. Han and T. Tilley, J. Am. Chem. Soc. 2006, 128,<br />
13698; Q. Xu and L.-B. Han, Org. Lett., 2006, 8, 2099; L-B Han and C.-Q. Zhao, J. Org. Chem. 2005, 70, 10121; L-B<br />
Han, Z. Huang, S. Matsuyama, Y. Ono and C.-Q. Zhao, Journal of Polymer Science Part A Polymer Chemistry, 2005,<br />
43, 5328-5336; L.-B. Han, Y. Ono and H. Yazawa, Org. Lett., 2005, 7, 2909; L.-B. Han, C. Zhang, H. Yazawa, and S.<br />
Shimada, J. Am. Chem. Soc. 2004, 126, 5080.<br />
O<br />
Ph<br />
R'
IL-2<br />
NEW SYNTHETIC APPROACHES TO THE CHIRAL CYCLIC AND MACROCYCLIC<br />
PHOSPHINE LIGANDS<br />
O.G.Sinyashin a , A.A.Karasik a , E.Hey-Hawkins b .<br />
a A. E. Arbuzov Institute of Organic and Physical Chemistry, Russian Academy of Sciences, Arbuzov str. 8, Kazan,<br />
Russia, 420088. E-mail: oleg@iopc.knc.ru<br />
b<br />
Institut für Anorganische Chemie der Universität Leipzig, Johannisallee 29, D-04103 Leipzig, Germany. E-mail:<br />
hey@rz.uni-leipzig.de<br />
Design of chiral ligands has been a central subject in the development of catalytic and<br />
stoichiometric asymmetric reactions. However studies involving diphosphine ligands and especially<br />
chiral polyfunctional diphosphines have mostly been focused on linear compounds; in contrast,<br />
heterocyclic diphosphines in which the phosphorus atoms are incorporated into the ring have not<br />
been extensively investigated, though such incorporation leads to essential differences in the<br />
structures and the properties of acyclic and cyclic compounds. Condensation in the<br />
three-component system of primary chiral/achiral phosphines and amines with formaldehyde is a<br />
powerful method of constructing various heterocyclic air-stable aminomethylphosphines.<br />
A number of enantiopure heterocyclic di- and monophosphines had been obtained via<br />
above-mentioned condensation with chiral amines 1,2 and amino acid salts 3 (Scheme 1). Due to<br />
heterocyclic structure of the phosphines, their asymmetric center disposed at close proximity of the<br />
transition metal coordinated with phosphorus. It should be mentioned that phosphino amino acid<br />
salts and their complexes are water-soluble and could be used in the biphasic catalysis.<br />
R<br />
P H +CH2O + H N<br />
P<br />
R'<br />
O2C<br />
N<br />
N<br />
CO 2<br />
R<br />
R 3P<br />
R<br />
Ph<br />
Cl<br />
Pt<br />
P<br />
R'<br />
Me<br />
N<br />
N<br />
N<br />
R<br />
CO2<br />
P<br />
P<br />
O 2C R'<br />
R<br />
10<br />
Ph<br />
Me<br />
N<br />
R =<br />
R''<br />
Ph<br />
Me<br />
N<br />
R''<br />
Br<br />
R'<br />
R'' = H, Me, Pr i<br />
OC CO<br />
Re<br />
R<br />
P<br />
P<br />
CO<br />
R<br />
Fe<br />
Fe<br />
Ph<br />
Me<br />
N<br />
The condensation of l-menthylphosphine gives us a row of chiral heterocyclic di- and<br />
monophosphine ligands with chirality in the α-position to phosphorus atoms (Scheme 2). Lipo- and<br />
hydrophilicity of the obtained phosphines and their complexes could be tuned by varying the<br />
substituents on nitrogen atoms.<br />
In order to obtain systems with asymmetrical phosphorus atoms we have studied the reactivity of<br />
secondary diphosphines. Condensation of di(arylphosphino)ethane and chiral methylbenzylamine<br />
with formaldehyde produces a meso-isomer of 1,3,6-azadiphosphacycloheptane 4 as a main product<br />
(Scheme 3). The meso-isomer demonstrates relatively high lability of the phosphorus configuration.<br />
Within few days it converted into the equilibrium mixture of meso- and rac-isomers with<br />
predominance of one of the rac-isomers. However, analogues with a propylene chain between two<br />
CH 2<br />
Scheme 1
phosphorus atoms have not been described yet. We have showed that instead of the desired<br />
eight-membered 1-aza-3,7-diphosphacyclooctanes the unusual macrocyclic<br />
1,9-diaza-3,7,11,15-tetraphosphacyclohexadecane 5 is formed in the reaction of<br />
1,3-bis(mesitylphosphino)propane with formaldehyde and chiral methylbenzylamine (Scheme 3).<br />
The high yield of the macrocycle was explained in terms of covalent self-assembly.<br />
P<br />
N<br />
N<br />
N<br />
R<br />
P<br />
P N<br />
R<br />
P<br />
R<br />
R<br />
M<br />
Cl Cl<br />
P H +CH2O + H N<br />
P<br />
N<br />
N<br />
R<br />
R<br />
R =<br />
11<br />
CH 3<br />
,<br />
CO 2H<br />
CO 2H<br />
Cl<br />
Cl<br />
M<br />
P<br />
M = Pt, Pd<br />
PR 3<br />
N<br />
N<br />
R<br />
R<br />
Covalent self-assembly of macrocycles appears to be a general process in aminomethylphosphine<br />
chemistry and is a useful method for a simple and effective one-pot synthesis of macroheterocyclic<br />
polyphosphines with large chiral intamolecular cavities (Scheme 3).<br />
Ph<br />
Me<br />
N<br />
N<br />
Ph<br />
P<br />
P<br />
Ph<br />
N<br />
P<br />
P<br />
Ar<br />
O<br />
NMe<br />
O<br />
Ar<br />
Ph<br />
O<br />
NMe<br />
O<br />
Me<br />
N<br />
N<br />
P H +CH2O + H N<br />
P<br />
P<br />
Ph<br />
Ph<br />
N<br />
Ar<br />
P<br />
P<br />
Ar<br />
Financial support from Volkswagen Foundation, RFBR (No. 06-03-32754-a), Russian Science<br />
Support Foundation and from President’s of RF Grant for the support of leading scientific schools<br />
(No. 5148.2006.3) is gratefully acknowledged.<br />
References<br />
1. A.A. Karasik et al. J.Chem.Soc., Dalton Trans, 2003, 2209; 2. A.A. Karasik et al. Mendeleev Commun, 2005, 89; 3.<br />
A.A. Karasik et al. Polyhedron, 2002, 21, 2251; 4. A.A. Karasik et al. Z. Anorg. Allg. Chem. 2007, in press; 5. R.N.<br />
Naumov et al. Dalton Trans, 2004, 357.<br />
N<br />
Ar<br />
P<br />
P<br />
Ar<br />
N<br />
Ar<br />
Me<br />
Me<br />
P<br />
Ph<br />
Me<br />
Me<br />
Me<br />
Ar<br />
N<br />
Me<br />
Me<br />
P<br />
P<br />
N<br />
Ar<br />
i-Pr<br />
Me<br />
i-Pr<br />
Ph<br />
N<br />
P<br />
P<br />
N<br />
P<br />
i-Pr<br />
Ar<br />
i-Pr<br />
i-Pr<br />
i-Pr<br />
Scheme 2<br />
Scheme 3
O-1<br />
SYNTHESIS AND PROPERTIES OF λ 5 -PHOSPHININES AND λ 5 -AZAPHOSPHININES<br />
Aleksandr N.Kostyuk, Yurii V.Svyashchenko, Dmitrii M.Volochnyuk, Dmitrii A.Sibgatulin, Aleksandr M.Pinchuk<br />
Institute of Organic Chemistry National Academy of Sciences of Ukraine, Murmanska Str.5, Kyiv, 02094 Ukraine<br />
Continuing our research [1] on λ 5 -phosphinines and λ 5 -azaphosphinines we have further<br />
investigated the reaction of phosphine 1 bearing an enamine residue with alkylating agents. The<br />
phosphonium salts 2 were found to react differently with bases. While the salts 2 upon treatment<br />
with aqueous sodium hydroxide transformed into stable ylides 3, heating the salts 2 with a catalytic<br />
amount of triethylamine lead to cyclic phosphonium salt 4.<br />
We have investigated various reaction conditions under which both the ylides 3 and the<br />
phosphonium salts 4 were converted into λ 5 -phosphinines 5. Thus, we have found a new approach<br />
to λ 5 -phosphinines. This approach could be applied for the synthesis of λ 5 -azaphosphinines 7.<br />
Other types of phosphinines and mechanisms of their formation will be also discussed.<br />
Reference<br />
[1] A.N.Kostyuk, Y.V.Svyaschenko, D.M.Volochnyuk Tertrahedron, 2005 Vol.61 pp 9263-9272.<br />
12
O-2<br />
THE SYNTHESIS AND SPECTROSCOPIC PROPERTIES OF spiro-ansa-spiro<br />
PHOSPHAZENES<br />
Amgalan Natsagdorj*, Selen Bilge**,Semsay Demiriz**,Zeynel Kilic**<br />
* Department of Chemistry, Mongolian National University, 210646 -Ulaanbaatar, Mongolia<br />
** Department of Chemistry, Ankara University, 06100 Tandoğan-Ankara, Turkey<br />
Cyclophosphazene derivatives and polyorganophosphazenes are in the borderline inorganic,<br />
organic and high polymer chemistry. It has been used in the preparation of novel phosphazene<br />
derivatives with different substituents. The condensation reactions of NxOy-donor type<br />
aminopodands (x, y=2,3,4) with N3P3Cl6 in dry THF yield partially substituted spiro-ansa-spiro,<br />
spiro-bino-spiro phosphazenes, respectively.<br />
The structures of the compounds have been examined by FTIR, 1 H-, 13 C-, 31 P-NMR, HETCOR,<br />
MS and elemental analyses.<br />
References<br />
[1] Bilge, S., Natsagdorj, A., Demiriz, Ş., Caylak, N., Kılıc, Z., Hokelek, T., Helv. Chim. Acta, 2004, 87, 2088.<br />
[2] Tercan., B., Hokelek, T., Bilge, S., Natsagdorj, A., Demiriz, Ş., Kılıc, Z., Acta Cryst., 2004, E60, 795.<br />
13
O-3<br />
ACETYLENEPHOSPHONATES: REACTIONS WITH NUCLEOPHILES<br />
B.I. Ionin, A.V. Dogadina, A.V. Aleksandrova and N.G. Didkovskii<br />
St. Petersburg State Technological Institute26 Moskovskii pr., St. Petersburg 190013, Russia.<br />
E-mail: bi@thesa.ru<br />
Acetylenephosphonates are accessible compounds, in much due to our earlier investigat-ions.<br />
This report concerns mainly three groups of such compounds, namely<br />
chloroacetyl-enephosphonates 1, aminoacetylenephosphonates 2 and acetylenediphosphonates 3.<br />
O<br />
(AlkO) 2P<br />
O<br />
Cl (AlkO) 2P NR2 (AlkO) 2P P(OAlk) 2<br />
1 2 3<br />
We found that in many cases the classical reactions of these compounds with nucleophiles<br />
proceed with certain features not observed earlier for related carboxylates. Reaction of neutral<br />
nucleophiles with chloroacetylenephosphonates 1 results in substitution of chlorine, and by this<br />
route were prepared compounds 2 and 3. With primary t-butylamine reaction is accompanied by<br />
hydrogen transfer with formation of ketenimine 4 but t-butylphosphine produces<br />
phosphinoacetylenephosphnates 5; other primary amines afford amidines 6.<br />
O<br />
O<br />
O NR<br />
(AlkO) 2P<br />
o NBu-t (AlkO) 2P<br />
14<br />
PHBu-t<br />
O<br />
(AlkO) 2P<br />
4 5 6<br />
With carbanionic nucleophiles formed in situ in the reaction of 1 with 1,3-dicarbonyl compounds<br />
(e.g., dimedone, acetylacetone, malonates, malonic dinitrile) in acetonitrile in the presence of<br />
K2CO3 reaction proceeds much similarly. Initially the product of chlorine substitution is formed,<br />
which can transform to allene, registered as intermediate or final compound. In the case of malonic<br />
dinitrile second molecule of the nucleophile is added to the activated multiple bond. In many cases<br />
the compound formed captures potassium cation to give finally a stable carbanionic compound (7,8).<br />
Similar ejection of H + rather than K + with formation of stable carbanion 9 occurs at the addition of<br />
malonate carbanions to the triple bond of diphosphionate 3, as evidenced by means of 13 C NMR<br />
spectroscopy (with and without proton decoupling) and x-ray structural investigation.<br />
O<br />
(AlkO) 2P<br />
_<br />
O<br />
O<br />
K +<br />
(AlkO) 2P<br />
O NC<br />
K +<br />
CN<br />
CN<br />
_ (AlkO) 2P<br />
CN<br />
O<br />
NC _<br />
O<br />
K +<br />
CN<br />
O<br />
NHR<br />
P(OAlk) 2<br />
7 8 9<br />
The reasons for retention of stable carbanions (enhanced CH-acidity and formation of a cavity by<br />
electron-donor groups) is discussed on the basis of B3LYP calculations and experimental<br />
observations.<br />
Addition of primary and secondary amines to inamines 2 and to other acetylenephos-phonates<br />
leading to enamines, enediamines, amidines and heterocycles is considered.
O-4<br />
NEW INSIGHTS IN P-NUCLEOPHILE ADDITIONS ONTO UNSATURATED IMINO<br />
DERIVATIVES FOR THE SYNTHESIS OF P-ANALOGUES OF GLUTAMIC ACID<br />
Christian V. Stevens,* Kristof Moonen and Ellen Van Meenen<br />
Research Group SynBioC, Department of Organic Chemistry, Faculty of Bioscience Engineering, Ghent University,<br />
Coupure links 653, B-9000 Gent, Belgium.<br />
Email: Chris.Stevens@UGent.be<br />
Aminophosphonates and aminophosphonic acids play a very important role in agrochemistry as<br />
well as in medicinal chemistry because they are structural mimetics of the transition state during<br />
peptide hydrolysis. Therefore, several aminophosphonic acids and azaheterocyclic phosphonates<br />
have excellent fysiological activity as enzyme inhibitor.<br />
A major synthetic route for aminophosphonates is the addition of phosphites to imines and many<br />
different conditions have been described. The addition of phosphites to α-unsaturated imines was<br />
previously described to yield selectively 1,2-adducts.<br />
We have now developed a new acid promoted addition of phosphites to α-unsaturated imines<br />
leading to α-difosfono-amines. The tandem addition involves a reversible 1,2-addition followed by<br />
a 1,4-addition leading to the new class of phosphono aminophosphonates. This new reaction allows<br />
the synthesis of a variety of phosphorus analogues of glutamic acid which are of great importance<br />
for the study of ionotropic and metabotropic glutamate receptors.<br />
R 1<br />
R 1<br />
N R2<br />
H +<br />
H<br />
N R2 H<br />
Pathway A<br />
1,4-addition<br />
H<br />
HN R2<br />
R P<br />
3 R<br />
O<br />
3 O OTMS<br />
R 1<br />
1,2-addition<br />
POTMS(OR 3 ) 2<br />
H<br />
R 1<br />
R 1<br />
N R2<br />
TMS<br />
H<br />
N R2 H<br />
P(OR 3 ) 2<br />
O<br />
OR<br />
P<br />
3<br />
OR 3<br />
OTMS<br />
Pathway B<br />
SN'-like substitution<br />
-POTMS(OR 3 ) 2<br />
N R2<br />
R P<br />
3 R<br />
O<br />
3 O OTMS<br />
R 1<br />
H<br />
15<br />
N R2<br />
(R 3 OTMS O) 2P<br />
R 1<br />
Aqueous work-up<br />
H<br />
(R 3 O<br />
O) 2P<br />
R 1<br />
HN R2<br />
P(OR 3 ) 2<br />
O<br />
R 1<br />
N R2<br />
(R 3 OTMS O) 2P<br />
P OR3<br />
OR 3<br />
TMSO<br />
The methodology was also studied in detail on hydrazones and oximes.<br />
Further, it was shown that this difosfonylation methodology also could be applied on the method<br />
of Savignac for the synthesis of α-phosphono aldehydes. The steric bulk of the N-substituent<br />
determines the sequence of the 1,2 versus 1,4-addition of silylated phosphite or trialkyl phosphite.<br />
References<br />
Moonen, K.; Laureyn, I., Stevens, C.V. Chem. Rev. 2004, 104, 6177 – 6215.<br />
Moonen, K.; Van Meenen, E.; Verwée, A.; Stevens, C.V. Angew. Chem. Int. Ed. 2005, 44, 7407 – 7411.<br />
Stevens, C.V.; Van Meenen, E.; Moonen, K.; Verwée, A.; Rottier, M., J. Org. Chem., Submitted.
O-5<br />
A FACILE AND HIGHLY EFFICIENT METHOD FOR Α-AMINO PHOSPHONATES VIA<br />
THREE-COMPONENT REACTIONS FROM ARYL AZIDES CATALYZED BY<br />
IRON-IODINE IN THE ABSENCE OF SOLVENT<br />
You Huang *, Yaqin Yu, Tanglin Liu, Dexin Feng and Ruyu Chen<br />
Institute and State Key Laboratory of Elemento-Organic Chemistry, Nankai University, Tianjin, 300071<br />
α-Amino phosphonates constitute an important class of biologically active compounds, and their<br />
synthesis has been a focus of considerable attention in synthetic organic chemistry as well as in<br />
medicinal chemistry. 1 Most synthetic methods reported utilize reactions of imines with phosphorus<br />
nucleophiles. Recently, it has been shown that three-component reactions of aldehydes (or ketones),<br />
amines, and diethyl phosphite were efficiently promoted by catalytic amounts of Lewis acids . 2 and<br />
Brosted acid, 3 or under microwave conditions. 4 Although these procedures do not require the<br />
isolation of the unstable imines prior to the reactions, longer reaction times are necessary to obtain<br />
the desired products in good yields at room temperature. In addition, the use of harmful organic<br />
solvents such as CH2Cl2 is undesirable from the viewpoint of today’s environmental consciousness.<br />
On the other side, in the three-component reactions, only primary or secondary amines were used as<br />
the amine components, to the best of our knowledge, there are no reports that the azides are used in<br />
this kind reaction. In the course of our investigations to develop environmentally friendly synthetic<br />
methods of organophosphorus compounds, we have found that iron-iodine system function as<br />
effective catalysts for the three-component reactions of aldehydes, azides, and diethyl phosphite in<br />
the absence of solvent afforded α-aminophosphonates in good to excellent yields (Scheme)<br />
R 1<br />
N 3<br />
R 2<br />
R 1 =H, 4-Cl, 4-CH 3<br />
R 2 =H, 2-Cl, 3-Cl, 4-Cl,2-NO 2, 3-NO 2, 4-NO 2, 4-CH 3, etc<br />
O<br />
H<br />
+ +<br />
H<br />
16<br />
O<br />
P<br />
Scheme<br />
OEt<br />
OEt<br />
neat<br />
R 1<br />
R 2<br />
NH<br />
Yield: 65-86%<br />
References<br />
1. Sheridan, R. P. J. Chem. Inf. Comput. Sci. 2002, 42, 103.<br />
2. Mu,X. J.; Lei, M.Y.; Zou, J. P.; Zhang, W. Tetrahedron Lett. 2006, 47, 1125 and references cited therein.<br />
3. Akiyama, T.; Sanada, M.; Fuchibe, K. Synlett, 2003, 10, 1463<br />
4. Yadav, J. S.; Subba Reddy, B. V.; Madan, C. Synlett, 2001, 7, 1131<br />
* This work was supported by and the Natural Science Foundation of Tianjin(05YFJMJC00600) and Nankai University<br />
Fe- I 2<br />
P<br />
O<br />
OEt<br />
OEt
O-6<br />
REACTION MECHANISM STUDIES OF SOLVOLYTIC DISPLACEMENT OF<br />
CHLORIDE FROM PHOSPHORUS<br />
Dennis N. Kevill, a Han Joong Koh, b and Suk Jin Kang b<br />
a<br />
Department of Chemistry and Biochemistry, Northern Illinois University, DeKalb, Illinois 60115-2862, USA.<br />
b<br />
Department of Science Education, Jeonju National University of Education, Jeonju 560-757, Korea<br />
Phone, +1-815-753-6882; Fax, +1-815-753-4802. E-mail: dkevill@niu.edu<br />
We are applying the extended Grunwald-Winstein equation (eqn. 1) to solvolytic displacements<br />
at phosphorus and sulfur.<br />
log k/ko = l N + m Y + c (1)<br />
In equation 1, k and ko are the first order rate coefficients for solvolysis in a given solvent and in<br />
80% ethanol, l is the sensitivity to changes in solvent nucleophilicity (N), m is the sensitivity to<br />
changes in solvent ionizing power (Y), and c is a constant (residual) term. Previous<br />
studies 1 of the solvolysis of phosphorochloridates, (RO)2POC1 and [(CH3)2N]2 POC1, have been<br />
extended to cyclic phosphorochloridates, with five-and six-membered rings. Both kinetic and<br />
product studies are performed. We will also report on kinetic studies of the solvolyses<br />
of Ph2POC1, Me2POC1, Ph2PC1, (C2H5)2PCl, [(CH3)3C]2PCl,and (C2H5O)2PC1. The l and m<br />
values can be compared with previous values, 1 and with values for attack at sulfur, to give useful<br />
mechanistic information.<br />
Reference<br />
(1) Kevill, D.N.; Carver, J.S. Org.Biomol.Chem.2004, 2, 2040 and references cited<br />
17
O-7<br />
THE NEW TIPE OF CALIX[4]RESORCINES BEARING PHOSPHONATES AND<br />
PHOSPHONIUM FRAGMENTS AT THE LOWER RIM<br />
E.L. Gavrilova 1 , A.A. Naumova 1 , N.I. Shatalova 1 , A.R. Burilov 2 , M.A. Pudovik 2 ,<br />
E.A. Krasil’nikova 1 , A.I. Konovalov 2 .<br />
1<br />
Kazan Technology University, department of organic chemistry, Karl Marx str. 68. 420015 Kazan. Russia.<br />
Gavrilova_Elena_@mail.ru<br />
2<br />
A.E. Arbuzov Institute of Organic and physical Chemistry. Kazan Scientific Centre of Russian Academy of Science.<br />
Arbuzov str. 8. Kazan. 420088. Russia<br />
The present work deals with synthetic methodology that allows the preparation of<br />
calyx[4]resorcines bearing phosphonates and phosphonium fragments at the lower rim, the latter<br />
were further modifided at the upper rim with secondary and tertiary amine groups of different<br />
structure by Mannich reaction.<br />
The methodology of introduction of phosphorus groups based on the reaction of phosphorylation<br />
of arylhalides by the derivatives of P(III) acids in the presence of Ni(II) compounds in which<br />
connection two main methods of functionalization were used:<br />
I. Preparation of phosphorus functionalized calix[4]resorcines using calixarenes matrix as the<br />
starting material<br />
3MeSiO<br />
3 MeSiO<br />
OSiMe 3<br />
Br<br />
3 MeSiO<br />
Br<br />
Br<br />
OSiMe 3<br />
Br<br />
OSiMe 3<br />
OSiMe 3P<br />
OSiMe 3<br />
+<br />
RnP(軷 / 4 ) 3-n<br />
18<br />
NiBr 2<br />
PhCN<br />
?= O; R ' = Et, i-Pr; n=0<br />
? = N; R = Ph, R' = NEt2 ; n= 0-3<br />
HO<br />
OH<br />
P<br />
HO<br />
HO<br />
P<br />
OH<br />
OH<br />
P<br />
? = O; P = P(O)(OR') 2<br />
?= N; P = R n P + (NEt 2 ) 3-n Br -<br />
chair conformation<br />
II. Preparation of calix[4]resorcinarenes phosphorylated at the low rim using the methodology for<br />
synthesis of octols by fourfold condensation of 4-phosphorus substituted benzaldehydes with<br />
resorcinol<br />
P<br />
HO<br />
OH<br />
HO<br />
OH<br />
O<br />
HO<br />
OH<br />
P = P(O)(OR') 2 ; R' = Et, i-Pr; P<br />
P<br />
P = RnP P<br />
P<br />
+ (NEt2 ) 3-nBr - ;<br />
R = Ph; n = 0-3 bowl conformation<br />
Isolated compounds were characterized by 31 P, 1 H and 13 C spectroscopy and date of elemental<br />
analisis and MALDI TOF.<br />
Acknowledgement. The support of the RFBR ( grant No. 04-03-32512 ) is gratefully acknowledged.<br />
OH<br />
OH<br />
OH
O-8<br />
MICROBIAL RESOLUTION OF RACEMIC PHOSPHONATES DERIVATIVES WITH<br />
ONE OR TWO STEREOGENIC CENTRES<br />
Ewa Żymańczyk-Duda, Małgorzata Brzezińska-Rodak, Magdalena Klimek-Ochab, Renata Kuriata, Marta Miszuk,<br />
Paweł Kafarski and Barbara Lejczak.<br />
Szybowcowa 50/17 54-130 Wrocław, Poland<br />
Biotransformations are biocatalytic conversions of non-natural substrates to structurally diverse<br />
products and belong to the standard means of Green Chemistry, which is the vigorously developing<br />
field of organic chemistry [1]. Biocatalysts are applied where the chemical synthesis fails or where<br />
compounds of required stereochemistry have to be synthesized [2]. Phosphonates constitute group<br />
of compounds which molecules contain direct bond between phosphorus and carbon atoms. Among<br />
them are structural analogues of carboxylic acids - they influence the activity of enzymes involved<br />
in amino acids metabolism exerting biological effect as antibacterials, herbicides or<br />
neuromodulators [3]. One of the most dynamically developing fields of research – not fully<br />
explored - is microbial bioconversion of racemic – chemically synthesized starting materials - into<br />
optically pure derivatives of organophosphorous compounds [4, 5]. Two kind of phosphonates<br />
derivatives were used as substrates of biocatalysis: aminophosphonates with one stereogenic centre<br />
and hydroxyphosphonate ethylbuthyl diester with two asymmetric atoms. Aspergillus niger,<br />
Rhodotorula rubra and Rhodotorula gracilis were used as biocatalysts in kinetically controlled<br />
resolution of aminophosphonates into optically pure products, reaction was catalysed by L- or<br />
D-amino acid oxidase existing in fungal cells. Physiologically, this enzyme converses L- or D-<br />
amino acid leaving the opposite one as unreacted. Every fungal strain was previously cultivated<br />
with the addition of particular amino acid to induce the synthesis of required enzyme. This approach<br />
allowed obtaining optically pure aminophosphonates. Desymmetrization of hydroxyphosphonate<br />
ethylbuthyl diester – compound with two stereogenic centers required different strategies. There are<br />
at least two ways of microbial resolution of this substrate. First one involved microbial<br />
transesterification of vinyl butyrate with one of the optical isomers of racemic mixture of<br />
hydroxyphosphonate – biotransformation catalyzed by Bacillus sp. in anhydrous organic solvent.<br />
The second strategy based upon the oxidation of hydroxy – group of one of the isomers of the<br />
substrate, using fungal strains: Saccharomyces cerevisiae and Geotrichum candidum in water<br />
media. All microbial cells used for the resolution of hydroxyphosphonate ethylbuthyl diester were<br />
previously cultivated under conditions which allowed to induce desired enzyme activities inside the<br />
cells.<br />
References<br />
1.Kiełbasiński P, Omelańczuk J, Mikołajczyk M. 1998. Lipase-promoted kinetic resolution of racemic, P-chiral<br />
hydroxymethylphosphonates and phosphines. Tetrahedron Asymm. 9:3283-3287.<br />
2.Liese A, Filho MV. 1999. Production of fine chemicals using biocatalysis. Curr. Opin. Biotechnol. 10:595-603.<br />
3.Kafarski P, Lejczak B. 2001. Aminophosphonic acids of potential medical importance. Curr. Med. Chem. –<br />
Anti-Cancer Agents 1: 301-312<br />
4.Żymańczyk-Duda E, Brzezińska-Rodak M, Lejczak B. 2004. Stereochemical control of asymmetric hydrogen transfer<br />
employing five different kinds of fungi in anhydrous hexane. Enzyme Mikrob. Technol. 34:578-582.<br />
5.Żymańczyk-Duda E, Klimek-Ochab M, Kafarski P, Lejczak B. 2005 Stereochemical control of biocatalytic<br />
asymmetric reduction of diethyl 2-oxopropylphosphonates employing yeasts. J Organom. Chem. 690:2593-2596.<br />
19
O-9<br />
ADVANTAGES OF ORGANOPHOSPHORUS SYNTHESIS IN IONIC LIQUIDS:“GREEN”<br />
APPROACHES TO USEFUL PHOSPHORUS SUBSTITUTED BUILDING-BLOCKS<br />
I. L. Odinets a , E.V. Matveeva a , E. V.Sharova a , O. I.Artyushin a , V.A.Kozlov, D.V. Vorob’eva a , S. N. Osipov a , T. A.<br />
Mastryukova a , G.-V. Röschenthaler b<br />
a A.N. Nesmeyanov Institut of Organoelement compounds RAS, Moscow, Russia,<br />
b Institute for Inorganic& Physical Chemistry, The University of Bremen, Germany<br />
Currently, ionic liquids (ILs) due to their potential for recyclability, ability to dissolve a variety of<br />
organic, inorganic and metal complex materials and non-volatile nature, are of interest in the search<br />
for “green” alternatives of traditional organic solvents. Nevertheless, only a few applications of<br />
ionic liquids in organophosphorus chemistry can be found in the literature, namely the<br />
Wittig-Horner reaction 1a , the synthesis of α-aminophosphonates via the Kabachnik-Fields<br />
reactions 1b,c and the esterification of phosphonic(phosphinic) acids by triethyl(methyl)<br />
orthoacetate 1d . We would like to suggest examples of a new application of ILs as activating media<br />
for organophosphorus chemistry. Thus, the use of [Rmim][X] enhanced significantly the rate of the<br />
Michaelis-Arbuzov rearrangement to give the target products in high yields under mild conditions<br />
with short reaction times. The method described can be successfully combined in a one-pot<br />
synthesis with the BASIL TM procedure 2 used for the synthesis of trivalent phosphorus acid esters.<br />
Ph2P(O)R' 90% - quant<br />
[hmim]Br<br />
r.t., 30 min<br />
R=Ph<br />
R 2POEt + R'X<br />
20<br />
[bmim]NTf 2<br />
110<br />
R=OEt<br />
o C, 20 min<br />
(EtO) 2P(O)R'<br />
93- 95%<br />
The second example comprises the direct synthesis of a variety of carbamoylmethyl phosphine<br />
oxides (CMPO) useful for processing of liquid radioactive wastes. In this reaction phosphonium ILs<br />
can be successfully applied similar to imidazolium ones. In the case of polymeric materials<br />
modified by amino functions this procedure gives chemically stable membranes bearing<br />
CMPO-moieties for water cleaning.<br />
R1R2P(O)CH2COOH R1R2P(O)CH2CONR3R4 R (PhO) 3P/IL<br />
3 R 4 NH/<br />
110 quant.<br />
o C, 30min-1 h<br />
R ;<br />
1 ,R2 = OAlk, Alk, Ph R3 ,R4 = H, Alk, Ar, CH2Ar Furthermore, phosphorylated azides interesting as substrates for the ‘click’ chemistry approach<br />
may be readily obtained via nucleophilic substitution of ω-halohenoalkylsubstituted phosphorus<br />
compounds.<br />
R 1 R 2 P(O)(CH 2) nHlg<br />
NaN3/H2O/[bmim]PF6 r.t.<br />
R1R2P(O)(CH2) nN3 N<br />
N<br />
N<br />
(CH2) nP(O)R 1 R 2<br />
R<br />
R<br />
In all the above reactions the recovered ionic liquid may be recycled at least 5 times without any<br />
decrease in activity. The influence of the anion on the activity as well as reasons of activation by<br />
ILs and non-typical reaction course in some cases will be discussed based on detailed investigation<br />
of the reaction mechanisms and intermediates formed.<br />
Reference<br />
1. a) Kryshtal, G. V.; Zhdankina, G. M.; Zlotin, S. G. Mendeleev Commun. 2002, 176.b) Lee, S-gi; Park, J. H.; Kang, J.;<br />
Lee, J. K. Chem. Commun. 2001, 1698. c)4. Yadav, J. S.; Reddy, B. V. S.; Sreedhar, P. Green Chem. 2002, 4, 436. d)<br />
Yoshino, T.; Imori, S.; Togo, H. Tetrahedron Lett. 2006, 62, 1309.<br />
2. PCT Int. Appl. 2003, WO 2003062251; Chem. Abstr. 2003, 139, 149757.
O-10<br />
SYNTHESIS AND CHEMICAL PROPERTIES OF BENZO[E]-1,2-OXAPHOSPHORININE<br />
DERIVATIVES – P-ANALOGUES OF COUMARINES<br />
E.N.Varaksina, D.A.Tatarinov, K.Yu.Cherkin, V.F.Мironov, A.I.Konovalov<br />
A.E.Arbuzov Institute of Organic and Physical Chemistry, Russian Academy of Sciences, Arbuzov Str. 8, Kazan,<br />
420088, Russia, e-mail: vlena@iopc.knc.ru<br />
The chemistry of the Р-heterocycles with О–Р–С or N–P–C bonds is one of the important fields<br />
of organophosphorus chemistry. It is mainly connected with the possibility of obtaining of various<br />
biologically active compounds. Recently, we have offered an easy method for selective synthesis of<br />
the new type of Р-heterocycles (3) by reaction of phosphorylated catechols with terminal alkynes.<br />
The unusually easy transformation (the reaction proceeds at room temperature with the quantitative<br />
formation of compounds 3) of dioxaphosphole cycles to 1,2-oxaphosphorinine includes the<br />
uncatalyzed phosphaalkylenes fragment formation, the aromatic fragment halogenation and<br />
ipso-substitution of oxygen. The regiochemistry of these processes mainly depends on the nature of<br />
R, R 1 , R 2 substituents. It was shown that the phosphonium salts and cationic or anionic<br />
phosphorates are able to interact with acetylenes and give the close result. The reaction with<br />
phosphonium derivatives is turned out to be a classical addition of phosphorus halides to the<br />
carbon-carbon multiple bonds.<br />
The chemical properties of obtained phosphorinines (3) were investigated for the first time. The<br />
new functionalized P-analogues of natural coumarines were obtained. Among them the series of<br />
stable cyclic phosphonous acids and amines can be mentioned. The halogenation and alkylation<br />
reactions may proceed both with phosphorus atom and double carbon-carbon bond depending on<br />
the halogenation or alkylation reagents nature. Another unusual result is rather easy conversion of<br />
compounds (3) to phosphoranes (4) or to phosphonium salts (5) with the same or different<br />
substituents Y, Z, W.<br />
R1<br />
R2<br />
1<br />
OH<br />
OH<br />
R1<br />
R2<br />
X = Cl, Br; R = Alk, Ar<br />
O<br />
HC CR<br />
PX3<br />
O<br />
2<br />
21<br />
X<br />
R1<br />
R2<br />
3<br />
O O<br />
P<br />
X<br />
R<br />
X<br />
R1<br />
R2<br />
5<br />
X<br />
R1<br />
R2<br />
O +<br />
P<br />
R<br />
4<br />
Y<br />
Z<br />
O P W<br />
The offered method is a versatile approach for modification of the natural catechols and<br />
dihydroxy-derivatives of heterocycles as well as for a wide range of acetylenes.<br />
The work is supported by Russian Science Support Foundation and the МК-1434.2006.3<br />
program.<br />
R<br />
Y Z
O-11<br />
THE REACTION OF 1,2-NAPHTHOQUINONES WITH SOME P(III) DERIVATIVES –<br />
A VERSATILE SYTHETIC APPROACH TO POTENTIALLY USEFUL<br />
NAPHTHOQUINONES AND DIHYDROXYNAPHTHALE-NES CONTAINING<br />
PHOSPHORUS–CARBON BOND<br />
A.V.Bogdanov, V.F.Мironov, N.R.Khasiyatullina, D.B.Krivolapov,<br />
I.А.Litvinov, А.I.Konovalov<br />
A.E.Arbuzov Institute of Organic and Physical Chemistry, Russian Academy of Sciences,<br />
Arbuzov Str. 8, Kazan, 420088, Russia, e-mail: mironov@iopc.knc.ru<br />
As a rule, trivalent phosphorus compounds are used in chemistry of ortho-quinones for the<br />
synthesis of phosphoranes or phosphonium salts containing P + –OС bond. The reactions of<br />
1,2-naphthoquinones with P(III) derivatives have been insufficiently investigated by the time. The<br />
reaction of 1,2-naphthoquinones with phosphites was only reported to give pentaalkoxy<br />
phosphoranes. Here the reactions of 1,2-naphthoquinones with such P(III) derivatives as<br />
tris(diethylamino)-, tri(n-butyl)- and triphenylphosphines were investigated for the first time. The<br />
reactions unexpectedly give betaines 5-8 containing phosphorus moiety in the fourth position of<br />
naphthalene cycle with high yields. The treatment of compounds 5-8 with bromine or hydrogen<br />
halide yields corresponding quinone- or catechol-containing phosphonium salts 9-12.<br />
(Et2N)3P<br />
+<br />
O<br />
O R2<br />
R2 R1<br />
1-4<br />
O<br />
H<br />
O Hal2<br />
_<br />
or HHal<br />
R1 R2<br />
+<br />
P(NEt2)3<br />
_<br />
Hal<br />
OH<br />
OH<br />
+ (or)<br />
R1 R2<br />
+<br />
P(NEt2)3<br />
5-8<br />
9, 10, 12<br />
R1, R2 = H, H (1, 5, 9), Br, H (2, 6, 10), H, Br (3, 7, 11), Cl, Br (4, 8, 12),<br />
22<br />
O O<br />
_ R1<br />
Hal<br />
+<br />
P(NEt2)3<br />
11<br />
Hal = Cl, Br, J<br />
The reactions of the 3-substituted 1,2-naphthoquinones with tri(n-butyl)- and triphenylphosphines<br />
preferably lead to the formation of 1,1’,2,2’-tetrahydroxy-3,3’-dihalogeno-4,4’-binaphthyls, which<br />
give the stable complexes with two molecules of phosphine oxide.<br />
O O<br />
R2 R1<br />
2, 4<br />
R = Ph, n-Bu<br />
PR3<br />
H2O<br />
OH OH<br />
R2 R1<br />
R1 R2<br />
HO OH<br />
13-16<br />
. 2 O=PR3<br />
The structure of compounds 5-11 has been confirmed by NMR and single crystal X-ray diffraction<br />
(for compounds 9, 12). The work is supported by the DCMS program N. 1 of Russian Academy of<br />
Sciences.
O-12<br />
YLIDES AND CARBENES. THE FIRST CARBENE CATALYZED REACTION<br />
Shevchenko I.V.*, Rogalyov A.E., a Poliakov D.V., a Röschenthaler G.-V. b<br />
a Institute of Bioorganic Chemistry and Petrochemistry, Murmanskaya Street 1, 02660 Kiev, Ukraine<br />
b Institute of Inorganic and Physical Chemistry, University of Bremen, Leobener Str, 28334 Bremen, Germany<br />
The P=C ylidic bond of phosphorus ylides is able to dissociate with the formation of the<br />
appropriate phosphanes and carbenes.<br />
P P<br />
For example, ylide 3 obtained from diphosphane 1 and acyl imines 2 is capable of reversible<br />
cleavage of the P=C bond in solution to give carbene (nitrile ylide) 4 and the phosphane,<br />
respectively. Carbene 4 can be trapped by Ph3P to give ylide 5. Trying to obtain ylide 5 from Ph3P<br />
and acyl imine 2 we found that under certain conditions the reaction leads to the formation of<br />
difluorophosphorane 6 and carbene 7. The latter can display not only carbene-like but also<br />
biradical-like properties to give dimer 8.<br />
Ylides 3 and 5 can be used as a source of carbene (or nitrile ylide) 4 in different reactions under<br />
mild conditions. However, the interaction of ylide 5 with diaminocarbene 9 did not give the<br />
expected alkene 10, but led to a quantitative transformation into compound 11 which can be<br />
considered as an unsymmetrical dimer of carbene 4. This is the first example of a reaction in which<br />
carbene acts as a catalyst.<br />
Similarly to phosphanes, diaminocarbene 9 can react with acyl imine 2. Although this reaction<br />
should also include the intermediate formation of carbene 4, no traces of its dimer 11 were found in<br />
this case and the only product was alkene 10.<br />
PPh 2<br />
Ph2P Ar N<br />
O<br />
N Ar C(CF<br />
3 4<br />
3) 2<br />
5<br />
C(CF3) 2<br />
Ph 2P<br />
O<br />
1<br />
N Ar<br />
C(CF3) 2<br />
PPh 2<br />
(i-Pr 2N) 2C<br />
9<br />
23<br />
F 3C<br />
Ph3P Ar N<br />
(F3C) 2C<br />
Ph3PF2 6<br />
F<br />
C<br />
i-Pr2N NPr-i2 N N<br />
CF3 F C C F<br />
F3C 2 10 Ar N CF3 11 Mes Mes 8<br />
C<br />
F<br />
C<br />
CF 3<br />
CF 3<br />
F<br />
CF 3<br />
C<br />
O<br />
N<br />
N<br />
N<br />
O<br />
7<br />
Mes O<br />
Mes<br />
CF 3<br />
F<br />
Mes
O-13<br />
SYNTHESIS, OPTICAL PROPERTIES AND REACTIVITIES OF A<br />
DIBENZOPHOSPHABORIN AND ITS DERIVATIVES<br />
Junji Kobayashi, Tomohiro Agou, and Takayuki Kawashima<br />
Department of Chemistry, Graduate School of Science, The University of Tokyo 7-3-1 Hongo, Bunkyo-ku, Tokyo<br />
113-0033, Japan<br />
E-mail: jkoba@chem.s.u-tokyo.ac.jp<br />
π-conjugated molecules with novel electronic and optical properties are desirable for constructing<br />
organic functional materials including organic semiconductors and light emitting devices. Recently,<br />
incorporation of main group elements into π-conjugated systems has been reported as efficient<br />
methodology to decrease HOMO-LUMO energy gaps because of π-conjugation between π-orbitals<br />
and donor or acceptor orbitals on main group elements. Among these classes of molecules,<br />
boron-containing hetero π-conjugated molecules have attracted much attention because of its vacant<br />
2p orbital, which can decrease the LUMO level and respond to external stimuli (i.e. Lewis bases).<br />
Herein we report the syntheses and the properties of a dibenzophosphaborin and its derivatives as<br />
the novel boron-containing hetero π-conjugated molecules.<br />
Dibenzophosphaborin 1 was prepared from 2,2’-dibromotriphenylphosphine by the reaction with<br />
BuLi and subsequent MesB(OMe)2. The phosphorus atom of dibenzophosphaborin 1 maintained its<br />
reactivity as triarylphosphine and 1 was readily led to sulfide 2, selenide 3 and phosphonium salt 4<br />
in good yields. X-ray crystallographic analysis of 1 showed the phosphaborin ring has a<br />
butterfly-shaped structure due to the pyramidalization of the phosphorus atom.<br />
Dibenzophosphaborin 1 showed very weak fluorescence emission with the large Stokes shift. It is<br />
probably because of large structural difference between the ground and excited states as well as<br />
flexibility of the phosphaborin ring of 1. Fluoride binding abilities of 1 and its derivatives 2-4 will<br />
also be presented.<br />
The study was partially supported by the Grant in Aid for the 21st Century COE Program for<br />
Frontiers in Fundamental Chemistry.<br />
24
O-14<br />
PHOSPHINOUS ACID-BORANES:AN EMERGING CLASS OF<br />
ORGANOPHOSPHORUS REAGENT<br />
K. Michal Pietrusiewicz * and Marek Stankevič<br />
Maria Curie-Sklodowska University, Department of Organic Chemistry,ul. Gliniana 33, 20-614 Lublin, Poland<br />
e-mail: michal@hermes.umcs.lublin.pl<br />
Despite the synthetic importance and wide use of derivatives of phosphinous acid-boranes such<br />
as their esters (phosphinite-boranes), or acid chlorides (chlorophosphine-boranes), the parent<br />
phosphinous acid-boranes (1) have, until very recently, remained practically unexplored and have<br />
not been even synthesized on purpose. We have recently demonstrated that phosphinous<br />
acid-boranes can be conveniently obtained by one of the two general synthetic routes utilizing<br />
readily available sec-phosphine oxides or phosphinic acid chlorides as substrates. 1,2 Phosphinous<br />
acid-boranes were then found to possess rich reactivity pattern which offered many useful synthetic<br />
transformations through the reactions at their P, O, or B, reactivity centers. 2,3 When<br />
unsymmetrically substituted they are P-stereogenic and can be readily resolved into enantiomers 3,4<br />
and used subsequently as versatile substrates for the stereoselective synthesis of a wide range of<br />
other nonracemic P-stereogenic compounds. Some examples of the stereoselective conversions of a<br />
model (S)-t-butylpbenylphosphinous acid-borane (1a) into other nonracemic phosphorus<br />
compounds are shown below.<br />
O<br />
O<br />
Ph P<br />
I<br />
t-Bu<br />
49% ee<br />
S<br />
Ph<br />
P<br />
H<br />
t-Bu<br />
~80% ee<br />
P<br />
Ph H<br />
t-Bu<br />
83% ee<br />
BH 3<br />
BH 3<br />
P OH<br />
t-BuPh<br />
(S)-(-)-1a<br />
25<br />
Ph P<br />
Me<br />
t-Bu<br />
100% ee<br />
BH 3<br />
BH 3<br />
BH 3<br />
Ph P<br />
H<br />
t-Bu<br />
100% ee<br />
BH 3<br />
P H<br />
t-BuPh<br />
O<br />
100% ee<br />
t-Bu P<br />
Ph<br />
O S Me<br />
O<br />
Ph P<br />
OMe<br />
t-Bu<br />
100% ee 100% ee<br />
The readily available resolved phosphinous acid-boranes hold thus great promise as the new<br />
enantiopure reagents for stereoselective synthesis of other phosphorus compounds including the<br />
valuable enantiomerically pure phosphines. Further examples will follow.<br />
References<br />
1. Stankevič, M.; Andrijewski, G.; Pietrusiewicz, K. M. Synlett 2004, 311.<br />
2. Stankevič, M.; Pietrusiewicz, K. M. Synthesis 2005, 1279.<br />
3. Pietrusiewicz, K. M.; Stankevič, M. Curr. Org. Chem. 2005, 9, 1883.<br />
4. Stankevič, M.; Pietrusiewicz, K. M. J. Org. Chem., 2007, 72, in print.
O-15<br />
SYNTHESIS OF NEW FUNCTIONALIZED PHOSPHORUS SUBSTITUTED<br />
DERIVATIVES OF 2,6-DI-TERT-BUTYL-4-METHYLPHENOL<br />
A.A. Prishchenko, M.V. Livantsov, O.P. Novikova, L.I. Livantsova, E.R. Milaeva<br />
Department of Chemistry, M.V. Lomonosov Moscow State University, Moscow, 119992, Russia. E-mail:<br />
liv@org.chem.msu.su<br />
Sterically hindered phenols are widely used for preparation of stable phenoxyl radicals and also<br />
are well known antioxidants. We have developed the convenient methods of synthesis of new<br />
functionalized phosphorus substituted derivatives of 2,6-di-tert-butyl-4-methylphenol (ionol) which<br />
are of great interest as perspective antioxidants, chelating ligands and bioactive substances with<br />
various properties. So the phosphonite A and phosphonates B are obtained via smooth addition of<br />
the bis(trimethylsiloxy)phosphine and trimethylsilylphosphites to 3,5-<br />
di-tert-butyl-4-hydroxybenzaldehyde in high yields.<br />
The new diphosphonates C, E and the functionalized phosphinates D, F were synthesized via<br />
interaction of the trimethylsilyl esters of several trivalent phosphorus acids with 3,5-<br />
di-tertbutyl-4-hydroxybenzaldichloride and 3,5- di-tert-butyl-4-hydroxybenzoyl chloride in high<br />
yields.<br />
The compounds A - F easily react with methanol or sodium methylate in methanol yielding the<br />
new water soluble acids or their derivatives as perspective substances.<br />
26
O-16<br />
MICROBIAL DESYMMETRIZATION OF RACEMIC MIXTURE OF<br />
(1-HYDROXYPHENYLMETHYL)PHENYLPHOSPHINATE ETHYL ESTER VIA<br />
OXIDATION OF ONE OPTICAL ISOMER<br />
Magdalena Klimek-Ochab, Ewa Żymańczyk-Duda, Małgorzata Brzezińska-Rodak, Paweł Kafarski and Barbara<br />
Lejczak<br />
Wroctaw University of Technology, Faculty of Chemistry, Department of Bioorganic Chemistry, Wyb. Wyspiańskiego<br />
27, 50-370 Wroclaw, Poland<br />
Biocatalysis has become a valuable tool for the synthetic chemists. Enzymatic transformations<br />
carried out by partially purified enzymes or whole-cell catalysts are used for the production of wide<br />
variety of products, from bulk to fine chemicals 1 . Chemoselectivity, regioselectivity and especially<br />
stereoselectivity of biocatalysts are particularly attractive features of biotransformations, because<br />
they allow obtaining enantiomerically pure compounds.<br />
Organophosphonates are compounds of special interest because of the large scope of their<br />
biological activities 2 . Phosphonic and phosphinic acids derivatives constitute a group of both<br />
biogenic and synthetic compounds with the stable, covalent carbon to phosphorus bond. The<br />
growing demand for enantiomerically pure products has impelled performing microbial resolution<br />
of racemic mixtures of phosphonates 3,4 .<br />
Two yeast strains – Geotrichum candidum and baker’s yeast were applied as biocatalysts for the<br />
resolution of racemic substrate – (1-hydroxyphenylmethyl)phenylphosphinate ethyl ester. The<br />
important feature of substrate used is the presence of two stereogenic centers in molecule. So, in<br />
optically pure form, this compound is very attractive for further application as chiral building block<br />
in chemoenzymatic synthesis. To achieve desired purpose – optically pure products of opposite<br />
configuration – there are at least two approaches of biocatalyst cells preparation. In the first method<br />
both G. candidum and baker’s yeast being under starvation conditions were applied as biocatalysts<br />
for transformation of (1-hydroxyphenylmethyl)phenylphosphinate ethyl ester. The second method<br />
involved incubation of starved yeast’s biomass in the presence of one of chemical agents – sodium<br />
pyruvate, oxalacetic acid and methyl-iso-propyl keton to force the microbial cells to carry out<br />
mostly the reduction of the additives. It implied the oxidation of the dehydrogenases cofactors into<br />
oxidized form e.g. NAD + , FAD. Subsequently after the addition of the hydroxyphosphinate into the<br />
biotransformation media, the expected oxidation of the substrate would be a part of the cofactor<br />
regeneration system which allowed obtaining the reduced form of the dehydrogenases cofactors<br />
(NADH, FADH2). They are the key elements for the metabolic pathways which finally result in<br />
ATP synthesis.<br />
The mixture of the products was analyzed by means of NMR with the addition of quinine as a<br />
chiral discriminator. Microbial transformation resulted in the oxidation of hydroxyl group of one<br />
optical isomer. The product – (1-oxo-phenylmethyl)phenylphosphinate ethyl ester is extremely<br />
unstable in water so the decomposition of this compound shifts the reaction equilibrium into the<br />
product side.<br />
Reference<br />
1 Schmidt A., Dordick J.S., Hauer B., Kiener A., Wubbolts M., Witholt B., 2001, Nature, 409, 258-268.<br />
2 Kafarski P., Lejczak B., 2001, Curry.Med.Chem.-Anti-Cancer Agents, 1, 301-312.<br />
3 Kiełbasiński P., Omelańczuk J., Mikołajczyk, M., 1998, Tetrahedron: Asymm., 9, 3283-3287.<br />
4 Kiełbasiński P., Albrycht M., Łuczak J., Mikołajczyk M., 2002, 13, 735-738.<br />
27
O-18<br />
GUANIDINOPHOSPHAZENES: DESIGN AND SYNTHESIS OF A NOVEL FAMILY OF<br />
UNCHARGED ORGANIC SUPER BASES<br />
Alexander A. Kolomeitsev, 1 Ilmar A. Koppel, 2 Toomas Rodima, 2 Jan Barten, 3 Enno Lork, 1 Gerd-Volker<br />
Röschenthaler, 1 Ivari Kaljurand, 2 Agnes Kütt, 2 Ivar Koppel, 2 Vahur Mäemets, 2 Ivo Leito 2<br />
1 Institute of Inorganic & Physical Chemistry, University of Bremen, D-28334 Bremen, Germany; 2 Department of<br />
Chemistry, University of Tartu, 51014 Tartu, Estonia; 3 Hansa Fine Chemicals GmbH, D-28359 Bremen, Germany<br />
A principle of creating a new generation of nonionic superbases is presented. 1) It is based on<br />
attachment of either tetraalkylguanidino-, 1,3-dimethylimidazolidine-2-imino- or<br />
bis(tetraalkylguanidino)carbimino groups to phosphorus of the iminophosphorane group using<br />
tetramethylguanidine or easily available 1,3-dimethylimidazolidine-2-imine. Seven new nonionic<br />
superbasic tetramethylguanidino-substituted phosphazene bases as well as eight new<br />
phenylsubstituted iminophosphoranes (P2- and P4-bases) and EtP2(pyr) have been synthesized.<br />
Their base strength is established in THF solution by spectrophotometric titration. The gas-phase<br />
basicities of several guanidino- and N',N',N",N"-tetramethylguanidino-substituted (tmg-substituted)<br />
phosphazenes and their cyclic analogues are calculated and the crystal structures of t-BuP1(tmg) and<br />
t-BuP1(tmg)·HBF4 are determined. The new superbases could be used as auxiliary bases in organic<br />
synthesis and as indicators to supplement and significantly extend the basicity scale in THF towards<br />
the more basic region. The enormous basicity-increasing effect of this principle has been<br />
experimentally verified in the case of the tetramethylguanidino-groups in the THF medium: the<br />
basicity increase when moving from t-BuP1(dma) (pKα = 18.9) to t-BuP1(tmg) (pKα = 29.1) is ten<br />
orders of magnitude. A significantly larger basicity increase (up to 20 powers of ten) is expected<br />
(based on the high-level DFT calculations) to accompany the transfer from the same t-BuP1(dma)<br />
base in the gas phase where the three dimethylamino fragments are replaced by methylated<br />
triguanide fragments (tmg)2C=N-. The gas-phase basicity of the resulting base<br />
[(tmg)2C=N-]3P=N-t-Bu is predicted to exceed that of the widely used commercial t-BuP4(dma)<br />
superbase (gas-phase basicity around 300 kcal·mol -1 ).<br />
Reference<br />
1)<br />
A. A. Kolomeitsev, I. A. Koppel, T. Rodima, J. Barten, E. Lork, G.-V. Röschenthaler, I. Kaljurand, A. Kütt, I. Koppel,<br />
V. Mäemets, I. Leito, J. Am. Chem. Soc. 2005, 127, 17656-17666.<br />
28
O-19<br />
PREPARATION AND CHARACTERIZATION OF NOVEL ROOM TEMPERATURE<br />
IONIC LIQUIDS BASED ON QUATERNARY PHOSPHONIUM CATIONS ON<br />
QUATERNARY PHOSPHONIUM CATIONS<br />
C 2H 5<br />
C 4H 9<br />
Katsuhiko Tsunashima and Masashi Sugiya<br />
Nippon Chemical Industrial Co., Ltd.<br />
9-11-1, Kameido, Koto-ku, Tokyo 136-8515, Japan<br />
Ionic liquids, i.e., organic molten salts with melting points below 100 °C, have been developed<br />
for diverse uses such as non-volatile green solvents for organic synthesis, solvent extraction and<br />
separation processes, and new electrolytes in various electrochemical systems based on their unique<br />
physico-chemical properties. Most studies on ionic liquids have been associated with nitrogen based<br />
ionic liquids such as imidazolium, quaternary ammonium, pyridinium, pyrrolidinium salts, etc.<br />
However, phosphonium based ionic liquids have been rarely investigated despite their chemical,<br />
thermal and electrochemical stabilities. We wish here to report the preparation and<br />
physico-chemical properties of novel phosphonium ionic liquids, as a demonstration of a new group<br />
of room temperature ionic liquids (RTILs) used as green solvents for organic synthesis and<br />
separation processes, electrolytic media for electrochemical devices, and others.<br />
Phosphonium ionic liquids presented in this work are based on triethylalkylphosphonium and<br />
tri-n-butylalkylphosphonium cations as shown in Fig. 1. The preparation was followed by aqueous<br />
anion exchange reaction of corresponding tetraalkylphosphonium halides (bromides or iodides)<br />
prepared by nucleophilic addition of trialkylphosphines to haloalkanes in high yields.<br />
Triethylalkylphosphonium based ionic liquids showed lower viscosities and higher electrical<br />
conductivities than tri-n-butylalkyl phosphonium based ionic liquids. Voltammetric analysis of<br />
triethylalkylphosphonium based ionic liquids exhibited wide electrochemical windows (-3.0 to +2.4<br />
V versus Ag/Ag + ). Thermogravimetric analysis also suggested that most phosphonium ionic liquids<br />
prepared were thermally stable up to nearly 400 °C. The relationship between molecular structures<br />
and physical properties of the phosphonium ionic liquids will be discussed.<br />
C 2H 5<br />
P +<br />
C 2H 5<br />
C 4H 9<br />
P +<br />
C 4H 9<br />
R 1 X -<br />
R 2 Y -<br />
R 1 = n-C 5H 11, n-C 8H 17, n-C 12H 25<br />
X = N(SO 2CF 3) 2<br />
R 2 = CH 3, n-C 8H 17, n-C 12H 25<br />
Y = N(SO 2CF 3) 2, BF 4, PF 6, SO 3CF 3<br />
COOCF 3, SO 3C 6H 4CH 3, SCN<br />
Fig.1 Phosphonium ionic liquids prepared.<br />
29
O-20<br />
INVESTIGATING THE MICHAELIS-BECKER REACTION IN PHOSPHONIUM AND<br />
IMIDAZOLIUM IONIC LIQUIDS<br />
Laura K. Byington Congiardo, Ahn Vu, Erika Shaffer, W. David Stegbauer, Robert Hartsock and D. Andrew Knight*<br />
Department of Chemistry, Loyola University New Orleans, 6363 St. Charles Avenue, New Orleans, Louisiana 70118,<br />
USA.<br />
We have been studying carbon-phosphorus bond formation in alternative reaction media such as<br />
water and ionic liquids. The alkylation of secondary phosphites (H-phosphonates) using sodium<br />
metal or sodium hydride as a base proceeds in phosphonium salt ionic liquids such as CYPHOS<br />
IL101 (1). The same reaction in imidazolium based ionic liquids such as [bmim][BF4] (2) can be<br />
achieved using sodium hydroxide as a base and obviates the need for highly reactive bases such as<br />
alkali metals or alkali metal hydrides. Work-up of the reaction is straightforward and involves<br />
removal of alkali metal salts via aqueous extraction and separation of the ionic liquid which can be<br />
recovered and reused. In addition, our procedure does not require the use of an organic solvent<br />
and as such represents a greener version of the classic Michaelis-Becker reaction.<br />
P<br />
1<br />
5<br />
I<br />
30<br />
N N CH3 BF4 2
O-21<br />
A NEW USEFUL SYNTHETIC PATHWAY TO TRIFLUOROMETHYL PHOSPHATES<br />
O. A. Shyshkov, A.A. Kolomeitsev and G.-V. Röschenthaler<br />
Institute of Inorganic & Physical Chemistry, University of Bremen, Leobener Strasse, D-28334 Bremen, Germany<br />
Salts of perfluoroalkyl phosphates are of great interest as ionic liquids [1] which can be used as<br />
stable and innocuous solvents in various green chemistry [2] processes. Moreover, perfluoroalkyl<br />
phosphates attract much attention as non-coordinating anions [3] and therefore can play an important<br />
role in preparation of new highly effective catalysts and creating Li-salt batteries of improved<br />
properties [4] .<br />
Herein, we present convenient multistep one-pot synthesis of trifluoromethyl phosphate salts<br />
starting from trifluoromethyl phosphine. Simple synthetic procedures and workup as well as high<br />
yields of the desired products are the advantages of the method proposed. (CF3)6P¯ ion, the most<br />
interesting object of the investigation, was detected by mass spectroscopy. A fluorine atom was<br />
abstracted from the phosphate ions discussed to give formerly unknown highly reactive<br />
trifluoromethyl phosphoranes.<br />
Reference<br />
[1] N. V. Ignat’ev, U. Welz-Biermann, A. Kucheryna, G. Bissky, H. Willner, J. Fluorine Chem. 2005, 126, 1150-1159.<br />
[2] www.epa.gov/greenchemistry/principles.html<br />
[3] I. Krossing, I. Raabe, Angew. Chem. Int. Ed. 2004, 43, 2066-2090.<br />
[4] Sanyo Electric Co., Japan, JP 2002075441.<br />
[5] T. Umemoto and S. Ishihara, Tetrahedron Lett., 1990, 31, 3579<br />
31
O-22<br />
NEW METHODS, AND STRATEGIES FOR ASYMMETRIC SYNTHESIS OF<br />
ORGANOPHOSPHORUS COMPOUNDS<br />
Kolodiazhnyi O.I., Guliayko, I.V, Gryshkun E.V., Kolodiazhna, A.O., Nesterov V.V., Kachkovskyi G. O.<br />
Institute of Bioorganic Chemistry and Petrochemistry, National Academy of Sciences of Ukraine, Murmanskaia 1, Kyiv,<br />
UKRAINE e-mail: oikol123@rambler.ru<br />
The report will highlight one area of our current research in organic phosphorus chemistry<br />
dealing with the development of highly stereoselective methods and reagents and their application<br />
for the preparation of enantiopure organophosphorus compounds.<br />
1) A strategy of multiple stereoselectivity will be illustrated as the effective method for<br />
stereochemical control in the synthesis of organophosphorus compounds. Stereochemical control in<br />
the formation of a stereogenic center is most crucial during fragment assembly for a synthesis of<br />
complex products. Selection of (R)- or (S)-chiral reagents provides a means of enantioselective<br />
control. This strategy of a chiral reagent control via additive effect of several chiral inductors will<br />
be shown on a number of examples. The effect of multiple asymmetric induction in catalytic<br />
processes will be reported. Such developments suggest the possibility of attaining enhanced<br />
stereoselection upon invoking the interaction of several chiral centers in a matched asymmetric<br />
reaction.<br />
A<br />
A'<br />
Favorable attack<br />
A'<br />
A<br />
32<br />
Non-favorable attack<br />
Matched AI Mismatched AI<br />
2) New asymmetric reducing reagents were developed on the base of boranes and accessible<br />
chiral natural compounds (tartaric acid, cinchona alkaloids, some natural amines) and applied for<br />
the preparation of bioactive organophosphorus compounds (phospho-carnitine,<br />
phospho- -amino- -hydroxybutyric acid, phospho-statins, phospho taxoids, and others)<br />
3) On the base of quinine and aminoacids were prepared organocatalysts, which were used to<br />
increase the stereoselectivity of phospha-aldol reaction as well as chiral phase transfer catalysts<br />
used in asymmetric alkylation and phosphorylation reactions.<br />
HO<br />
HO<br />
O<br />
O -<br />
H B H M+<br />
O<br />
O<br />
M= Li, Na, Bu4N Recent references (selected)<br />
1. O.I. Kolodiazhnyi Tetrahedron, 2003, 59, 5953-6018.<br />
2. O.I. Kolodiazhnyi Tetrahedron: Asymmetry 2005, 16, 3295-3340<br />
3. O.I.Kolodiazhnyi Russ Chem Rev 2006, 75, 254-282.<br />
R<br />
A'<br />
H<br />
A<br />
O<br />
H<br />
N
O-23<br />
IMIDOYL CHLORIDES: NEW PROMISING BUILDING BLOCKS IN SYNTHESIS OF<br />
α-AMINOPHOSPHORYL COMPOUNDS<br />
P. P. Onys’ko*, Yu. V. Rassukana, A. A. Sinitsa<br />
Institute of Organic Chemistry, NAS of Ukraine, 02094 Kyiv, 5 Murmans’ka St.<br />
E-mail: onysko@rambler.ru<br />
Interaction of imidoyl chlorides with nucleophilic phosphorus compounds represents a<br />
convenient approach to biologically important acyclic and heterocyclic functionalized derivatives,<br />
containing aminophosphoryl fragments.<br />
O<br />
P<br />
Cl<br />
R N X<br />
N<br />
COOR'<br />
R<br />
N<br />
P H<br />
CH2 =CBrCO2Me 1,3-H<br />
Ar<br />
*<br />
R N R"<br />
R'<br />
P<br />
R N<br />
H<br />
R"<br />
R'<br />
O<br />
X<br />
S P<br />
R<br />
O<br />
1. P<br />
2.HSCH2COOH 1<br />
R<br />
Cl<br />
X=C(O)R'<br />
P<br />
O<br />
N<br />
R'<br />
O<br />
P<br />
X<br />
R<br />
NHY<br />
Y-H<br />
O P<<br />
X<br />
R N<br />
X = RSO2 , R2PO P<br />
R N<br />
O<br />
cycloaddition<br />
R'<br />
III<br />
4<br />
2<br />
*<br />
3<br />
6<br />
5<br />
9<br />
8<br />
7<br />
Y-H: R2P(O)H, ROH, RSH, enamines, electron-rich aromatic and hetroaromatic compounds<br />
Combination of fluoro-(R = Rf) and phosphorus substituents is favorable both for easiness and<br />
stereoselectivity of Н-transfer in phosphorylated azaallylic systems allowing preparation of<br />
fluorinated aminophosphoryl derivatives. The phosphorylation of N-benzylimidoylchlorides (X=<br />
PhCH2) leads to P-C bond formation accompanied by “reagent-free” reduction of C=N bond.<br />
Transformation 1→2→3 represents a new approach in asymmetric synthesis of aminophosphonic<br />
acids. Activated C-phosphorylated imines 7, 8 are promising synthons for the preparation of acyclic<br />
and heterocyclic compounds incorporating aminophosphoryl fragment. Variety of transformations<br />
is connected with possible participation in reactions of C=N bond, halogen atoms or N-substituents.<br />
The regularities found for reactions of imidoyl chlorides with phosphorus compounds form a basis<br />
for purposeful control of their chemoselectivity.<br />
33
O-24<br />
KINETICS AND MECHANISM OF THE OXIDATION OF LOWER OXYACIDS OF<br />
PHOSPHORUS BY MORPHOLINIUM CHLOROCHROMATE<br />
Pradeep K. Sharma<br />
Department of Chemistry, J.N.V. University, Jodhpur 342 005, India<br />
Email: drpkvs27@yahoo.com<br />
Oxidation of lower oxyacids of phosphorus by morpholinium chlorochromate (MCC) in<br />
dimethylsuloxide (DMSO) leads to the formation of corresponding oxyacids with phosphorus in a<br />
higher oxidation state. The reaction exhibits 1:1 stoichiometry. The reaction is first order with<br />
respect to MCC and the oxyacids. The reaction does not induce polymerization of acrylonitrile.<br />
Reactions are catalysed by hydrogen ions. The hydrogen-ion dependence has the form: kobs = a +<br />
b[H + ]. The oxidation of deuteriated phosphinic (DPA) and phosphorous acids (DPPA) exhibited<br />
a substantial primary kinetic isotope effect. The oxidation was studied in nineteen different organic<br />
solvents. The solvent effects were analysed in terms of Taft’s and Swain’s multiparametric<br />
equations. The effect of solvent indicates the solvent polarity plays a major role in the process. It<br />
has been shown that the pentacoordinated tautomer of the phosphorus oxyacid is the reactive<br />
reductant and it has been concluded that tricoordinated forms of phosphorus oxyacids does not<br />
participate in the oxidation process. A mechanism involving transfer of a hydride ion in the<br />
rate-determining step has been proposed.<br />
34
7O-25<br />
FUNCTIONALIZED PHOSPHORYL COMPOUNDS: SYNTHESIS, EXTRACTION,<br />
TRANSPORT AND IONOPHORE PROPERTIES<br />
R.A. Cherkasov, A.R. Garifzjanov, N.S. Krasnova, A.S. Talan, L.A. Burnaeva, G.A. Ivkova<br />
Kazan State University. A.M. Butlerov Chemistry Institute. 420008, Kremlevskaya str., 18, Kazan, Russia<br />
The methods of the synthesis of the mono-, bi- and polyfunctional phosphonates, phosphinates<br />
and phosphinoxydes having an α-, β- and other positions to the phosphoryl group oxygen-,<br />
nitrogen- and sulfur-containing functional group different in their complexing abilities (FPC) were<br />
worked out on the base of classical reactions of the organophosphorus synthesis - Kabachnik –<br />
Fields, Pudovik, Abramov, Todd – Atterton and others.<br />
By use of experimental and theoretical methods acid – basic properties of the obtained FPC and<br />
their distribution constants in interphase systems water – organic solvents are investigated. It were<br />
obtained the quantitative dependence between the distribution constants and quantity of the carbon<br />
atoms in FPC molecules, i.e. their hydropholic – lipophilic balance. On the base of these<br />
correlations was made selection of the metals’ ions, organic and mineral acids potential extractants.<br />
The optimal structure of the organophosphorus extractants as well as conditions of selective<br />
concentrations and separations of precocious metals ’ions from accompanying ions and from each<br />
other are developed.<br />
It was found that efficiency both liquid and membrane – transport extractions of the mineral acids<br />
connected with the hydratation enthalpy of corresponding inorganic acid’s anion as well as of the<br />
structure of the FPC –carrier’s molecule. The correlations between the acids’ transport efficiency<br />
and the nature of the organophosphorus and “additional” coordination centers were established for<br />
the membrane extraction of perchloric, oxalic, tartaric acids and ethanolamine. The phosphinoxydes,<br />
acids of the tetracoordinated phosphorus and FPC with additional hydroxyl- and alkoxy – groups<br />
carriers acid substrates in form of corresponding H-complexes, but in phosphorylated amines<br />
namely nitrogen atom appears as coordination center.<br />
The results obtained are used in the development of the new high-effective ion-selective<br />
electrodes sensitive to ions alkaline and alkali-earth metals, and also the anion – sensitive electrodes<br />
used for the analysis of small amounts of substances in various objects.<br />
Acknowledgments –The work is maintained by RBRF (grant no 04-03-3296) and a joint Russian-American Program<br />
“Basic Research and Higher Education” (grant REC 007)<br />
e-mail: rafael.cherkasov@ksu.ru<br />
35
O-26<br />
INVESTIGATING THE SYNTHETIC POTENTIAL OF<br />
AMINOALKYLFERROCENYLDICHLOROPHOSPHANES<br />
S. Tschirschwitz, P. Lönnecke, E. Hey-Hawkins *<br />
Universität Leipzig, Institut für Anorganische Chemie, Johannisallee 29, D-04103 Leipzig, Germany;<br />
tschirschwitz@chemie.uni-leipzig.de<br />
A series of novel racemic as well as optically pure aminoalkylferrocenyl -dichlorophosphanes has<br />
been prepared through the reaction of phosphorus trichloride with the corresponding<br />
aminoalkylferrocene precursors. These compounds have proven to be versatile starting materials for<br />
several syntheses. The chloro groups can be substituted subsequently and stereoselectivly leading to<br />
diastereomerically pure P-chiral phosphanes which are promising ligands for catalytically active<br />
complexes in homogeneous catalysis. A rather unusual substituent at the phosphorus atom is an<br />
ortho-carbaboranyl group. It could easily be introduced stereoselectively via the reaction of a<br />
monolithiated carbaborane with an aminoalkylferrocenyldichlorophosphane (Figure 1). The<br />
remaining chloro group can also be substituted, for example by alkoxides.<br />
Fig. 1<br />
The aminoalkylferrocenyldichlorophosphanes can be converted into the corresponding primary<br />
phosphanes, which can then be lithiated twice. The generated dilithium phosphanediides crystallise<br />
from THF/hexane as Li12P6 cluster compounds that can be described as closo clusters according to<br />
Wade’s rules.<br />
36
O-27<br />
SYNTHESIS AND REDOX PROPERTIES OF CROWDED DIPHOSPHINES:<br />
APPROACHES TOWARD PHOSPHORUS-PHOSPHORUS INTER-VALENCE CHARGE<br />
TRANSFER SYSTEMS<br />
Shigeru Sasaki, Masatoshi Izawa, Kohji Sasaki, Kiyotoshi Kato, Midori Murakami, Fumiki Murakami, Masaaki<br />
Yoshifuji, and Noboru Morita<br />
Department of Chemistry, Graduate School of Science, Tohoku University, Aoba, Sendai 980-8578, Japan. E-mail:<br />
sasaki@mail.tains.tohoku.ac.jp<br />
Crowded triarylphosphines such as 1 1 have large bond angles around the<br />
phosphorus and are oxidized at low potentials to stable cation radicals. We<br />
synthesized crowded triarylphosphines carrying functional sites such as donors and<br />
acceptors and investigated redox properties andintramolecular interaction between<br />
the phosphorus and the functional sites. 2 Diphosphines carrying crowded<br />
triarylphosphine structures are expected to be two-step redox systems and cation radicals can be<br />
mixed valence or inter-valence charge transfer systems depending on the spacer. We herein report<br />
synthesis and redox properties of crowded diphosphines such as 2 2a and 3.<br />
Analogous nitrogen compounds such as TPD are applied to hole injecting and transporting<br />
materials of electro-optic devices and studied as organic mixed-valence systems.<br />
Crowded diphosphines were synthesized from common key intermediates,<br />
(bromoaryl)phosphines, and redox properties were studied by cyclic voltammetry, EPR, and<br />
UV-Vis-NIR spectroscopies. Diphosphines exhibit reversible two-step redox waves suggesting<br />
formation of stable cation radicals. Detailed study on the oxidation will be presented.<br />
References<br />
[1] Sasaki, S.; Sutoh, K.; Murakami, F.; Yoshifuji, M. J. Am. Chem. Soc. 2002, 124, 14830-14831.<br />
[2] a) Sasaki, S.; Murakami, F.; Murakami, M.; Watanabe, M.; Kato, K.; Sutoh, K.; Yoshifuji, M. J. Organomet.<br />
Chem. 2005, 690, 2664–2672. b) Sutoh, K.; Sasaki, S.; Yoshifuji, M. Inorg. Chem. 2006, 45, 992–998. c) Sasaki, S;<br />
Murakami, F.; Yoshifuji, M. Organometallics 2006, 25, 140–147.<br />
37
O-28<br />
THE ORGANOPHOSPHORUS SULFENYL BROMIDES AS VERSATILE REAGENTS<br />
FOR CYSTEINE DERIVATIVES FUNCTIONALIZATION BY UNSYMMETRICAL<br />
DISULFIDE BOND FORMATION<br />
Mateusz Szymelfejnik, Sebastian Demkowicz, Dariusz Witt, and Janusz Rachon<br />
Department of Organic Chemistry, Chemical Faculty, Gdansk University of Technology, Narutowicza 11/12, Gdansk,<br />
Poland, 80-952. Fax: +48 58 347 2694,<br />
E-mail: rachon@chem.pg.gda.pl<br />
Disulfides are important compounds for both chemical and biological processes. There are many<br />
biologically active peptides and peptide mimetics possess unsymmetrical disulfide bonds.<br />
Disulfides are applied for preparation of self-assembled monolayers (SAMs) and<br />
monolayer-protected clusters (MPCs) with the interesting properties.<br />
The most widely used method of unsymmetrical disulfides formation involves the thioalkylation<br />
of a thiol by derivatives of N-sulfenylphthalimide, N-sulfenamides, (from diethyl azodicarboxylate<br />
DEAD), sulfenyl chlorides, Bunte salts, and 2-pyridyldisulfide (obtained from Aldrithiol). Thiolysis<br />
is favored for the synthesis of unsymmetrical disulfides by above methods, although yields may be<br />
compromised by required long time and rapid thiol-disulfide exchange reactions.<br />
Here, we present a new and versatile synthesis of unsymmetrical disulfides based on the readily<br />
available 5,5-dimethyl-2-thiono-1,3,2-dioxaphosphorinanyl sulfenyl bromide 2 from treatment of<br />
bis-(5,5-dimethyl-2-thiono-1,3,2-dioxaphosphorinanyl) disulfide 1 with bromine at 0℃ The<br />
developed procedure is very rapid (15 min) and proceeds under mild conditions and excellent yields<br />
(90-100%). Cysteine derivatives functionalized at sulfur by unsymmetrical disulfide bond can be<br />
prepared from thiols bearing neutral, aromatic, basic or acidic functionalities with variable length of<br />
carbon chain.<br />
The success of the method depends on the selective reactivity of<br />
5,5-dimethyl-2-thiono-1,3,2-dioxophosphorinanyl-2-disulf nyl derivatives 3 toward protected Cysteine<br />
to afford exclusively unsymmetrical disulfides 4. The observed selectivity emerged from excellent<br />
leaving group property for dithiophosphate anion (pK 2 for corresponding acid). This property is<br />
a<br />
crucial for the short times required for the transformation and minimizes further disulfide exchange<br />
between product 4 and used Cysteine derivative.<br />
In conclusion, a convenient, versatile, functionalization method of Cysteine derivatives by<br />
unsymmetrical disulfide bond formation has been developed. Simple procedure combined with<br />
excellent yields make this method an attractive alternative to other reported procedures.<br />
38
O-29<br />
AMBIDENT ELECTROPHILICITY OF 5-MEMBERED RING PHOSPHATE TRIESTERS<br />
Nissan Ashkenazi,* a Yoffi Segall, a Yishai Karton, a<br />
Sanjio S. Zade b and Michael Bendikov b<br />
a<br />
Department of Organic Chemistry, IIBR-Israel Institute for Biological Research, P.O.Box 19, Ness-Ziona 74100, Israel.<br />
b Department of Organic Chemistry, Weizmann Institute of Science, Rehovot 76100, Israel<br />
Reactions of 2-ethoxy-1,3,2-dioxophospholane 2-oxide (ethyl ethylene phosphate) with various<br />
hard and soft nucleophiles exhibited that this cyclic phosphate triester features ambident<br />
electrophilicity. In general, harder nucleophiles attack on the P center to form the P-O bond<br />
cleavage products, while softer nucleophiles attack on the ring carbon to yield the C-O bond fission<br />
products. Exception to this generality can be found when bulky hard nucleophiles attack on the ring<br />
carbon. In contrast to all other carbanions, which were checked, benzylmagnesium chloride yields<br />
exclusively the C-O bond fission product, probably via a more complexed mechanism.<br />
Ab intio and DFT calculations shed more light on the selectivity of C-O vs. P-O cleavage,<br />
showing that the reactions of 2-alkoxy-1,3,2-dioxophospholane 2-oxide with various nucleophiles<br />
are kinetically controlled, although C-O scission is always the thermodynamically preferred<br />
process.<br />
As no exocyclic bond was cleaved, we may suggest that the 5-memebered ring enhances the<br />
reactivity of not only the P atom, but also of the ring carbon.<br />
EtO<br />
O<br />
P<br />
O<br />
O -<br />
Y<br />
Y -<br />
EtO<br />
O<br />
P<br />
O<br />
39<br />
O<br />
X -<br />
EtO<br />
O<br />
O<br />
P<br />
X<br />
Y= Bn, O-t-Bu, SPh, SEt, PPh 2.<br />
X= H, Me, Et, i-Pr, sec-Bu, cyclopropyl, cyclopentyl, cyclohexyl, Ph, ethynyl, allyl.<br />
O -
O-30<br />
A NEW APPROACH TO THE SYNTHESIS OF PHOSPHORANES ON THE BASIS OF<br />
THE REACTION OF BENZO[D]-1,3,2-DIOXAPHOSPHOLES, HAVING Β- OR<br />
Γ-UNSATURATED GROUP IN SUBSTITUENT, WITH COMPOUNDS CONTAINING<br />
MULTIPLE BONDS<br />
V.F.Mironov 1,2 , L.M.Burnaeva 1 , L.M.Abdrakhmanova 2 , M.N.Dimukhametov 2 ,<br />
Yu.yu. Kotorova 1 , I.V.Konovalova 1<br />
1 Kazan State University, Kremlevskaya Str. 18, Kazan, 420008 Russia<br />
2 A.E.Arbuzov Institute of Organic and Physical Chemistry, Russian Academy of Sciences,<br />
Arbuzov Str. 8, Kazan, 420088, Russia, e-mail: mironov@iopc.knc.ru<br />
It is known that the Р(III) derivatives, containing such a group as NCO, NCS, C≡CR, RC=CR2<br />
bonded with phosphorus, easily react with carbonyl compounds to give various P-heterocycles. The<br />
formation of the intermediate P–C–O – or P–O–C – bipolar ions and the intramolecular attack of<br />
anionic moiety on unsaturated substituent at phosphorus are postulated in these reactions and lead to<br />
the final P-heterocycles. Here we attempted to extend this approach to the relatively stable Р(III)<br />
derivatives (1a-d), containing a substituent not bonded directly with phosphorus. The various types<br />
of phosphoranes (3, 4) were obtained with high regio- and stereoselectivity. The possible pathways<br />
of its formation and crystal structures are discussed. The work is supported by MK-1434.2006.3<br />
program.<br />
O Ph<br />
P O<br />
O<br />
O<br />
O R1<br />
P<br />
O<br />
CF3<br />
O CF3<br />
CCl3CHO, (CF3)2C=O, ArCH=C(COOR)2, ROOCC CCOOR and etc.<br />
Ph<br />
1<br />
O<br />
P O<br />
O<br />
PhCH=N<br />
1a<br />
O<br />
O<br />
or (and) P<br />
X X Z<br />
2<br />
Y Z<br />
Y<br />
3<br />
4<br />
E, Z<br />
1b 1c 1d<br />
P<br />
O P<br />
X=Y<br />
+ C Z<br />
O R<br />
P O<br />
O R<br />
O<br />
O<br />
O<br />
P*<br />
O<br />
CF3<br />
N<br />
* CF3 O<br />
Ph<br />
O O<br />
P<br />
O<br />
Ph<br />
O O<br />
P<br />
O<br />
*<br />
*<br />
O<br />
* Ph<br />
O<br />
CF3 CF3<br />
Me<br />
*<br />
O<br />
*<br />
CF3<br />
O Me<br />
CF3<br />
Me<br />
* O<br />
O<br />
CCl3<br />
O P<br />
*<br />
O<br />
O<br />
*<br />
3a<br />
3d<br />
3b<br />
O Ph<br />
P<br />
* O<br />
* CCl3<br />
* O<br />
O<br />
CF3 CF3 4a<br />
3c<br />
O Ph<br />
*<br />
P O CF3<br />
* O CF3 O<br />
CF3 CF3 4b<br />
References<br />
[1] Pudovik A.N. et al. Synthesis. 1986, (10), 793-804.<br />
[ 2 ] Mironov V.F. et al. Uspekhi Khim. (Rus. Chem. Rev.). 1996, 65(11), 1013-1051.<br />
40
O-31<br />
DIASTEREOSELECTIVE SYNTHESIS OF ENANTIOPURE Α-AMINOPHOSPHONIC<br />
ACIDS DERIVATIVES<br />
Vladimir A. Alfonsov<br />
A.E.Arbuzov Institute of Organic and Physical Chemistry, Kazan Scientific Centre of the Russian, Academy of<br />
Sciences, 420088, Arbuzov Str., 8, Kazan, Russian Federation. Fax: +7 8432 75 5322. E-mail: alfonsov@iopc.knc.ru<br />
This report is devoted to A.N. Pudovik (1915-2005).<br />
The preparation of enantiopure organophosphorus compounds has been of great interest over the<br />
last few years due to the opportunity to use them as chiral drugs and ligands for design of<br />
homogeneous or heterogeneous catalysts. Rather attractive among these compounds are<br />
α-aminophosphonic acids derivatives due to their well-known biological activity. One of the ways<br />
to the α-aminophosphonic acids derivatives is Pudovik reaction. In this report the use of this<br />
reaction in enantioselective synthesis of aminophosphonates is shortly shown and our own<br />
investigations in this field will be delivered. We have found several new and efficient ways of the<br />
synthesis of cyclic and acyclic aminophosphonic acids derivatives by the reaction of trivalent<br />
phosphorus compounds with β-aldiminoalcohols and iminocarbonic acids. In the case of chiral<br />
initial compounds most of these reactions proceed diastereoselectively that permits to obtain final<br />
products with very high diastereo- and enantiopurity. The essential way for increasing<br />
stereoselectivity of such reactions is the use of cyclisation as stereocontrolling steps.<br />
This work was supported by the Civilian Research and Development Foundation (grant no. RUC2-2638-KA-05) and<br />
the Russian Foundation for Basic Research (grant no. 03-03-33082).<br />
41
O-32<br />
PHOSPHORYLATION OF IMINO ANALOGS OF Α-HALOCARBONYL COMPOUNDS<br />
Yuliya V. Rassukana, Petro P. Onys’ko, Anatoly D. Sinitsa<br />
Institute of Organic Chemistry, NAS of Ukraine, 02094 Kyiv, 5 Murmans’ka St.<br />
E-mail: onysko@rambler.ru<br />
The chemoselectivity of reactions between α-haloimines – compounds containing Hal-C-C=Nskeleton<br />
– and nucleophilic phosphorus derivatives are discussed systematically. The synthetic<br />
potentialities as well as possible mechanistic pathways of this currently developing field of<br />
organophosphorus chemistry are considered. Phosphorylation of the α-haloimines leads mainly to<br />
C- or N-phosphorylated compounds as the final products, the selectivity being dependent on the<br />
type of halogen, substituents at the imine carbon and nitrogen atoms, and on the nature of<br />
phosphorus reagent.<br />
SO 2 R'<br />
N PR 3<br />
E A<br />
R Hal<br />
R'<br />
R Hal E A<br />
N<br />
O<br />
P(OR) 3<br />
E A<br />
R Hal<br />
R Hal<br />
X<br />
N<br />
N P<br />
R R<br />
E A<br />
O<br />
R Hal N X<br />
PR 2<br />
O<br />
E A =R 2 PO<br />
N<br />
42<br />
X<br />
Hal<br />
Hal<br />
O<br />
PR 2<br />
E A<br />
R Hal<br />
P(O)R' 2<br />
N X<br />
P(O)R 2<br />
The main factors controlling regio- and stereoselectivity are elucidated. A series of novel<br />
theoretically and preparatively important transformations are found out, i.e., new diad<br />
rearrangements involving the N→C and C→N transfer of a sulfonyl or a phosphoryl group, the<br />
unusual acylation of the electrophilic imine carbon atom by tervalent phosphorus isocyanates, and<br />
others. Variety of transformations is connected with possible participation in reactions of C=N bond,<br />
halogen atoms or N-substituents. The use of haloimines as versatile building blocks for synthesis of<br />
practically promising functionalized aminophosphonates, bisphosphonates, phosphorus analogs of<br />
dehydro aminoacids, etc., is demonstrated.<br />
N<br />
H<br />
X
O-105<br />
HIGHLY STEREOSELECTIVE AND STEREOSPECIFIC EPOXIDATION OF<br />
2-PHOSPHOLENES AND N-GLYCOSIDES OF PHOSPHA SUGARS AND THEIR<br />
BIOASSAYS<br />
Mitsuji Yamashita, 1* Taishi Niimi, 1 Michio Fujie, 1,2 Valluru Krishna Reddy, 1 Hirono Totsuka, 1 Buchammagari<br />
Haritha, 1 Maddali Kasthuraiah Reddy, 1 Satoki Nakamura, 2 Kazuhide Asai, 3 Takuya Suyama, 1 Gang Yu, 1 Masaki<br />
Takahashi, 3 and Tatsuo Oshikawa 4<br />
1<br />
Department of Nano Materials, Graduate School of Science and Technology, Shizuoka University, Hamamatsu 432-8561, Japan<br />
2<br />
Faculty of Medicine, Hamamatsu University School of Medicine, Hamamatsu 431-3192, Japan<br />
3<br />
Department of Materials Chemistry and Chemical Engineering, Faculty of Engineering, Shizuoka University, Hamamatsu 432-8561,<br />
Japan<br />
4<br />
Department of Materials Chemistry and Biochemistry, Numazu College of Technology, Numazu 410-8501, Japan<br />
tcmyama@ipc.shizuoka.ac.jp<br />
Phospha sugar derivatives are pseudo sugar analogues having a phosphorus atom in the sugar<br />
ring structure represented by Haworth equation. Normal sugars have an oxygen atom in the<br />
hemiacetal ring, and the popular pseudo sugars have a carbon, nitrogen, or sulphur atom, which are<br />
naturally occuring and are called as carba, aza, or thia sugars. These popular pseudo sugars are<br />
well investigated and many of them are known to be biologically active materials. On the other<br />
hand, phospha sugars are not yet found in the nature and the synthesis and characterization of them<br />
are not so well studied.<br />
Previous methodologies for the preparation of phospha sugars used entirely sugar starting<br />
materials, however, we are challenging to develop novel synthetic routes from phosphorus<br />
heterocyclic compounds, mainly, 2- or 3-phospholene derivatives. Here we will report a new<br />
reaction to prepare 2,3-epoxyphospholanes by stereoselective and stereospecific epoxidation of<br />
2-phospholenes with sodium peroxide (1,2) and the reaction of the epoxides with nucleophiles such<br />
as amines for the preparation of N-glycosides of phospha sugar derivatives as well as their<br />
bioassays.<br />
Treatment of 1-phenyl-2-phospholene 1-oxide (1) with sodium peroxide gave erythro<br />
2,3-epoxy-1-phenylphospholane 1-oxide (2) in highly stereoselective and stereospecific manner.<br />
Epoxide 2 as well as the diastereomeric threo epoxide prepared separately by epoxidation with<br />
hydrogen peroxide or via addition reaction of bromine in aqueous medium was converted into<br />
2-amino-3-hydroxy-1-phenylphospholane 1-oxide (3) by the reaction of amines with inversion of<br />
the stereochemistry. Amino derivatives 3 are N-glycosides of phospha sugar derivatives, therefore,<br />
the present epoxide preparation may be an important finding for the phospha sugar chemistry.<br />
Some of phospha sugars and phospholanes prepared were subjected to bioassay to show very<br />
important characters for medicines.<br />
Ph<br />
P<br />
O<br />
Na 2 O 2<br />
Ph<br />
P<br />
O<br />
1 eryhthro 2 threo 3<br />
Reference<br />
[1] Yamashita, M.; Valluru, K. Reddy; Lakonda, N. Rao; Buchammagari, H.; Maeda, M.; Suzuki, K.; Totsuka, H.;<br />
Takahashi,M.; Oshikawa, T. Tetrahedron Lett. 2003, 44, 2339-2341.<br />
[2] Totsuka, H.; Maeda, M.; Valluru, K. Reddy; Takahashi, M.; Yamashita, M. Heterocyclic Commun. 2004, 10,<br />
295-300.<br />
O<br />
43<br />
NHRR'<br />
Ph<br />
P<br />
O<br />
OH<br />
NRR'
O-106<br />
CHIRAL P-HETEROCYCLES: EFFICIENT METHOD FOR THE OPTICAL<br />
RESOLUTION OF 3-METHYL-3-PHOSPHOLENE 1-OXIDES<br />
Tibor Novák, 1 József Schindler, 1 Viktória Ujj, 2 János Deme, 2 Ádám Bódis, 2<br />
Elemér Fogassy 2 and György Keglevich 2<br />
1<br />
Research Group of the Hungarian Academy of Sciences at the Department of Organic Chemical Technology, Budapest<br />
University of Technology and Economics, H-1521 Budapest, Hungary<br />
2<br />
Department of Organic Chemical Technology, Budapest University of Technology and Economics, H-1521 Budapest,<br />
Hungary<br />
The few methods described in the literature on the resolution of phosphorus compounds are based<br />
mainly on the formation of separable diastereomeric salts. A practical procedure for the<br />
enantiomeric resolution of 1-substituted-3-methyl-3-phospholene 1-oxides (1) by separation of the<br />
diastereomeric associations (1·2) formed by interaction with chiral hosts, such as TADDOL<br />
derivatives (2) is described.<br />
P<br />
O Y<br />
1<br />
Y = aryl, alkyl, alkoxy<br />
Ph<br />
Ph<br />
R 1<br />
O<br />
OH<br />
2<br />
44<br />
R 1<br />
O<br />
HO<br />
Ph<br />
Ph<br />
R 1 = Me,<br />
R 1 = Me,<br />
The antipodes of 1-aryl-, 1-alkyl- and 1-alkoxy-3-methyl-3-phospholene 1-oxides (1) were<br />
separated in good yields and in most cases in high enantiomeric excess. The novel procedure seems<br />
to be of general value, as can be applied for the resolution of chiral phosphine oxides and<br />
phosphinates.<br />
Y Ph o-Me-Ph p-Me-Ph Naphthyl Et Pr EtO<br />
enantiomeric<br />
excess [%]<br />
>99 >99 >99 >99 60 95 95
O-107<br />
AIR-STABLE CHIRAL PRIMARY PHOSPHINES<br />
L. J. Higham † , R. M. Hiney ‡ and D. G. Gilheany ‡<br />
† School of Natural Sciences-Chemistry, Bedson Building, University of Newcastle, Newcastle-upon-Tyne, NE1 7RU<br />
‡ School of Chemistry and Chemical Biology, University College Dublin, Belfield, Dublin 4, Ireland<br />
Compounds of phosphorus in the +3 oxidation state have been shown to be incredibly useful and<br />
versatile molecules with medicinal, electronic and catalytic applications. 1 They are used to make<br />
products as diverse as (-)-menthol 2 (the mint flavouring in many foodstuffs) and L-Dopa, a potent<br />
anti-Alzheimer's drug. 3<br />
One potential route to building current and advanced types of these molecules would be to<br />
convert phosphorus hydrogen bonds into other - for instance carbon - bonds using primary<br />
phosphines - RPH2, which possess two such PH bonds. This approach is generally ignored due to<br />
the fearsome reputation of low molecular weight primary phosphines as being molecules that are<br />
spontaneously flammable, occasionally explosive and often toxic. For applications like preparing<br />
chiral pharmaceuticals using catalysis (e.g. L-Dopa) we also need to build in chirality somehow.<br />
In this work we present our discovery 4 of a new class of air-stable, chiral primary phosphine<br />
(CPP), which presents a gateway to many types of phosphorus-containing molecule. We discuss the<br />
origin of their stability, which is unlikely to be due to sterics and is not due to the presence of a<br />
stabilising heteroatom (the only known stabilising forces for RPH2). So what is this stabilising<br />
factor? We also show the first crystal structure of one of our CPPs - the first example of a CPP to be<br />
characterised in this way. The discovery of a chiral molecular framework that stabilises the PH<br />
bond suggests these phosphines will be of significant value as chiral precursors to a whole host of<br />
new ligands in homogeneous catalysis. This will be demonstrated by presenting very recent work<br />
describing novel ligands we have synthesised and preliminary results in catalytic transformations.<br />
Reference<br />
1. K. V. Katti, N. Pillarsetty, K. Raghuraman, Top. Curr. Chem. 2003, 229, 121-141.<br />
2. K. Tani, S. Otsuka et al. J. Am. Chem. Soc. 1984, 106, 5208-5217.<br />
3. W. S. Knowles, Acc. Chem. Res. 1983, 16, 106-112.<br />
4. R. M. Hiney, L. J. Higham, H. Müller-Bunz, D. G. Gilheany, Angew. Chem. Int. Ed. 2006, 45, 7248-7251.<br />
45
P-1<br />
α-IMINOTRIFLUOROETHYL PHOSPHONATE – THE FIRST REPRESENTATIVE OF<br />
C-PHOSPHORYLATED N-H IMINES<br />
A. D. Sinitsa, M. V. Kolotylo, Yu. V. Rassukana, V.V. Pirozhenko and P. P. Onys’ko,<br />
Institute of Organic Chemistry, NAS of Ukraine, 02094 Kyiv, 5 Murmans’ka St.<br />
E-mail: onysko@rambler.ru<br />
The convenient approach to imine 1 – the first representative of previously unknown N-H<br />
iminoalkyphosphonic acid derivatives was elaborated.<br />
CF 3 CN<br />
(EtO) 2 P(O)H<br />
:B<br />
46<br />
O<br />
F 3 C<br />
P(OEt) 2<br />
It is noteworthy that trichloroacetonitrile, CCl3CN, under similar reaction conditions acts as<br />
chlorinating agent, to give mainly chlorophosphate (EtO)2P(O)Cl.<br />
With a few exceptions, N-H imines have been reported as unstable compounds, leading to<br />
difficulties in their isolation 1 . Phosphorylated N-H imine 1 is quite stable at ordinary conditions and<br />
exists as Z/E mixture of stereoisomers; Z isomer: δP –1.4 ppm, 3 JHP 37.2 Hz, δF –69.7 ppm, 3 JFP 1.9<br />
Hz, 4 JFH 1.2 Hz; E isomer: δP –0.7 ppm, 3 JHP 58.2 Hz, δF –72.4 ppm, 3 JFP 1.9 Hz, 4 JFH 0.6 Hz (Z/E =<br />
10:1). Obviously Z-isomer is stabilized by intramolecular P=O…H-bonding. Imidoyl phosphonate<br />
1 can be readily functionalized. In particular, it adds phosphorus-, oxygen- or sulfur-centered<br />
nucleophiles allowing preparation of bisphosphonates or phosphorylated thiazolidones.<br />
F 3 C<br />
O<br />
O<br />
F 3 C<br />
P(OEt) 2<br />
OR<br />
P(OEt) 2<br />
NH 2<br />
NH 2<br />
[H]<br />
ROH<br />
O<br />
F 3 C<br />
P(OEt) 2<br />
N H<br />
1<br />
(RO) 2 P(O)H<br />
1<br />
N H<br />
O<br />
F C 3 O<br />
HSCH 2 CO 2 H<br />
O<br />
S<br />
P(OEt) 2<br />
NH2 N<br />
H<br />
P(OR) 2<br />
O<br />
P(OEt) 2<br />
Reference<br />
[1] F. Gosselin, P.D.O’Shea, S. Roy, R.A. Reamer, Cheng-yi Chen, R.P. Volante., Org. Lett. 2005, 7, 355.<br />
CF 3
P-2<br />
SYNTHESIS OF CALIX[4]RESORCINS, CONTAINING PHOSPHORYL FRAGMENTS<br />
ON THE BOTTOM RIM OF THE MOLECULE<br />
A. R. Burilov, I. R. Kniazeva, Yu. M. Sadykova, M. A. Pudovik, W.D. Habicher, I. Baier, A. I. Konovalov<br />
A.E.Arbuzov Institute of Organic and Physical Chemistry, Kazan Scientific Centre of the Russian Academy of<br />
Sciences, Arbuzov Str., 8, 420088 Kazan, Russian Federation. Fax: +7 8432 75 5322; Email: pudovik@iopc.knc.ru<br />
Two synthesis methods for calyx[4]resorcins bearing phosphonate groups on the bottom rim of<br />
the molecule were developed. First of them consists of the interaction of phosphorylated acetals<br />
1a-e with resorcin. The reactions were carried out in acid medium to give calixarenes 2a-e<br />
containing dialkoxyphosphoryl fragments. These compounds when isolated are easily hydrolyzed to<br />
calixarenes 3a-e with the elimination of one of the alkoxy groups of the phosphonate fragment. The<br />
compounds 3a-e were isolated and characterized.<br />
4 (RO) 2P(O)CH 2CH(OEt) 2<br />
1a-e<br />
HO OH<br />
+<br />
H<br />
+ 4<br />
-8 EtOH<br />
O<br />
R = Et (a), Pr (b), i-Pr (c), Bu (d); i-Bu (e)<br />
47<br />
HO<br />
CH<br />
CH2 P(OR) 2<br />
OH<br />
+<br />
H (H 2O)<br />
4<br />
-4 ROH<br />
HO<br />
CH<br />
CH 2<br />
O P OR<br />
OH<br />
The second approach is based on the introduction of etoxyvinylphosphonates to the reaction with<br />
resorcin. The interaction of etoxyvinyldichlorophosphonate with resorcin allows one to obtain water<br />
soluble calix[4]resorcine 4, containing four acidic phosphonic fragments on the bottom rim of<br />
calixarene matrix. The use of ethers of ethoxyvinylphosphonic acid in the reaction with resorcin<br />
resulted in the formation of calixarenes 3a-e. The stability of the obtained calixarenes increases<br />
with the increase of alkyl radical length in initial phosphonate. For example, calixarenes with<br />
(С7Н15O)2P(O) or (С12Р25O)2P(O) fragments reveal hydrolytic stability.<br />
4 EtOCH=CHP(O)Cl 2<br />
+<br />
HO<br />
4<br />
OH<br />
HCl<br />
-4 EtOH<br />
R = CH2P(OH)2<br />
2a-e<br />
R R<br />
This study was supported by the Russian Foundation for Basic Research (grant no. 05-03-32136).<br />
O<br />
HO<br />
HO<br />
HO<br />
HO<br />
R<br />
4<br />
R<br />
OH<br />
OH<br />
OH<br />
OH<br />
3a-e<br />
OH<br />
4
P-4<br />
INTERACTION OF 3-ALKYL-2-ALKOXY-1,3,2-OXAZAPHOSPHINANES WITH<br />
ALKYLCHLOROFORMATES<br />
A.E. Shipov, G.K. Genkina, P.V. Petrovskii, T.A. Mastryukova<br />
A.N. Nesmeyanov Institute of Organoelement Compounds RAS, 28 ul. Vavilova, 119991 Moscow, Russian Federation.<br />
E-mail: shipov@ineos.ac.ru<br />
1,3,2-Oxazaphosphinane analogues of phosphoryl formic acid derivatives could be of interest as<br />
biologically active compounds. In this connection the reaction of phosphinanes (1) with alkyl<br />
chloroformates (2) was investigated.<br />
NR 1<br />
P<br />
O<br />
1<br />
OR 2<br />
+<br />
ClCOOR 3<br />
2<br />
R 1 = Pr i<br />
R 1 = Me, Bu, Ph<br />
48<br />
NR 1<br />
3<br />
O<br />
P<br />
O<br />
3<br />
+<br />
COOR 3<br />
4<br />
+<br />
+<br />
NR 1<br />
Cl<br />
4<br />
P<br />
NR<br />
P 2<br />
OR<br />
O<br />
5<br />
1<br />
COOR 3<br />
Cl<br />
OR 2<br />
O<br />
COOR 3<br />
In contrast to the interaction of phosphinanes 1 with haloacetic acid derivatives the reaction<br />
pathway of esters 1 with chloroformates (reaction products and their yields ratio) drastically<br />
depends not only on the structure of the substituents R 2 in ester group but also on the structure of<br />
the substituent R 1 at the nitrogen atom. When R 1 = i-Pr the reaction was found to proceed only with<br />
the formation of two main products of the Arbuzov rearrangement – without (3) and with (4)<br />
opening of the cycle, and yields ratios depended noticeably on the structure of R 2 (according to<br />
NMR 31 P data 3 and 4 ratios are from 94 : 6 for R 2 = Me to 24.5 : 75.5 for R 2 = i-Pr). But when R 1 =<br />
Me, Bu or Ph along with the Arbuzov reaction products 3 and 4 the formation of acyclic<br />
chlorophosphite (5) takes place, besides when R 1 is Me and Ph chlorophosphite 5 becames the main<br />
product of the reaction (the ratio of 5 to 3+4 is 72 : 28) and for R 1 = Bu this ratio is 15 : 85. The<br />
yields ratio between 5 and 3+4 was found to depend also on the polarity of the solvent and<br />
temperature of the reaction. As we suppose the main factor determining the reaction pathway and<br />
yields ratio of products is the steric hindrances at the nitrogen atom. The structure of<br />
chlorophosphites 5 was confirmed by the conversion (without isolation) into phosphorothioates or<br />
phosphoroamidothioates.<br />
Supported by the Russian Foundation for Basic Research (grant No. 05-03-33091).<br />
References<br />
A.E. Shipov, G.K. Genkina, P.V. Petrovskii, T.A. Mastryukova, Russ. Chem. Bull. Int. Ed., 2004, 53, 1996.
P-6<br />
2,2,2-TRIBROMONAPHTHO[2,3-d]-1,3,2-DIOXAPHOSPHOLE: OBTAINING AND<br />
REACTION WITH PHENYLACETYLENE<br />
A.V.Bogdanov, V.F.Мironov, B.I.Buzykin, A.B.Dobrynin, D.B.Krivolapov, А.I.Konovalov<br />
A.E.Arbuzov Institute of Organic and Physical Chemistry, Russian Academy of Sciences, Arbuzov Str. 8, Kazan,<br />
420088, Russia, e-mail: mironov@iopc.knc.ru<br />
The interaction of 2,2,2-trichlorobenzo-1,3,2-dioxaphosphole with arylacetylenes is a versatile<br />
approach to the synthesis of benzo[e]-1,2-oxaphosphorinine derivatives – P-analogues of<br />
biologically important coumarines [1]. Here we report the obtaining of<br />
2,2,2-tribromonaphtho[2,3-d]-1,3,2-dioxaphosphole (1) from 1,2-naphthalenediol, PBr3 and<br />
bromine and its reactions with phenylacetylene. The reaction of phosphole (1) with phenylacetylene<br />
proceeds in several directions (10-15°C).<br />
1<br />
O<br />
PBr3<br />
O<br />
Ph C CH<br />
1<br />
-PBr3, -Br2<br />
1) Ph C<br />
2) H2O<br />
CH<br />
6<br />
OH<br />
O<br />
OH<br />
O P<br />
OH<br />
The first and second pathways include the<br />
formation of heterocycles (2) (2-3 %) and (3)<br />
(20-23 %) after reaction mixture hydrolysis. The<br />
third pathway is the disproportionation of<br />
phosphole (1) with the following bromination<br />
resulting in the formation of phosphoranes (4, 5).<br />
The phosphates (6, 7) were obtained as a result of<br />
hydrolysis. We succeeded in isolation of compound<br />
(3, 7). Phosphate (6) was obtained by the<br />
independent synthesis also. The structure of<br />
2-phenyl-9-(2-dihydroxy<br />
phosphoryl-1-phenylethen-1-yl)naphtho[1,2-d]furane<br />
(3) was confirmed by single crystal X-ray<br />
diffraction. The geometry of molecule (3) (solvate<br />
with DМSО) in crystal is shown in the figure.<br />
49<br />
O O<br />
P<br />
OH +<br />
7<br />
Br<br />
Ph<br />
2 Ph<br />
3 Ph<br />
O<br />
PBr<br />
O 2<br />
Br2<br />
-HBr<br />
O<br />
PBr<br />
O 2<br />
4<br />
5 Br<br />
H2O -HBr<br />
H2O -HBr<br />
S<br />
O<br />
C<br />
C<br />
O 2<br />
O 4<br />
O<br />
OH<br />
O<br />
OH<br />
O P<br />
OH<br />
H<br />
O<br />
P<br />
OH<br />
OH<br />
C2 C3 O1 C4 C5 C6 C8 C7 C23 C9 C12 P1 C10 O3 C11 C13 C16 C<br />
H<br />
15<br />
C18 C14 C17 C22 C<br />
H<br />
3a<br />
C1a C7a C7b H<br />
C 21<br />
C 20<br />
C 19
P-7<br />
SYNTHESIS, CHARACTERIZATION AND APPLICATIONS OF NOVEL<br />
IMINOPHOSPHINITES<br />
Jake Yorke, Sarah K. D. Beaton and Aibing Xia*<br />
Department of Chemistry, Mount Saint Vincent University, Halifax, Nova Scotia, Canada<br />
Unsymmetrical ligands with two or more different donors such as phosphorus and nitrogen<br />
donors (P,N type) have attracted increasing attention due to their bonding versatility and catalytic<br />
applications. We will report the synthesis, characterization and applications of two series of novel<br />
bidentate and potentially hemilabile iminophosphinites, which can be prepared from readily<br />
available starting materials such as aminophenols (Scheme 1) and salicylaldehydes (Scheme 2).<br />
Initial results in Suzuki coupling reactions showed that palladium complexes based on both<br />
iminophosphinites are active catalysts for deactivated bromides such as 4-bromoanisole. The<br />
efficiency of series 2 iminophosphinites is generally better than that of series 1 iminophophinites<br />
under similar conditions.<br />
R<br />
R<br />
R<br />
R<br />
OH<br />
R'2C=O NH 2<br />
R<br />
R<br />
50<br />
R'<br />
OH<br />
R''2PCl DMAP<br />
N R<br />
Scheme 1. Iminophosphinites (1) from aminophenols<br />
OH<br />
R'NH2 O<br />
R<br />
R<br />
2<br />
OH<br />
C<br />
N<br />
R'<br />
R' 2PCl<br />
DMAP<br />
Scheme 2. Iminophosphinites (2) from salicylaldehydes<br />
Submitted by Aibing Xia, Department of Chemistry, Mount Saint Vincent University, Halifax, Nova Scotia, Canada<br />
B3M 2J6<br />
R'<br />
R<br />
R<br />
1<br />
R<br />
R'<br />
2<br />
O<br />
N<br />
C<br />
R'<br />
O<br />
PR'' 2<br />
PR'' 2<br />
N<br />
R'
P-9<br />
SYNTHESIS AND REACTIONS OF PHOSPHAISOCOUMARINS<br />
Ai-Yun Peng*, Bo Wang, Xun Yang<br />
School of Chemistry & Chemical Engineering, Sun Yat-sen University, 135 Xingangxi Lu, Guangzhou, 510275, China<br />
Isocoumarins are a class of naturally occurring lactones that display diverse bioactivities, some<br />
antitumor isocoumarins have especially gained considerable research interests. In contrast, related<br />
reports about their analogues are rare. Since there is a remarkable similarity in bioactivities between<br />
the carbon species and their phosphorus counterparts, one would anticipate that phosphorus<br />
isocoumarin analogs (i.e. phosphaisocoumarins) might have potential bioactivities similar to those<br />
of isocoumarins reported herein. Here we report the results on the synthesis of<br />
phosphaisocoumarins and the investigations of their reactions with acetylene, alkene and Me3SiBr<br />
(Scheme 1).<br />
R 1<br />
R 1<br />
R 1<br />
P(OEt) 2<br />
O<br />
I2,CHCl3 X<br />
P O<br />
O OEt<br />
X = I, Br, Cl<br />
O<br />
R<br />
2 R R2<br />
R 2<br />
R 2<br />
P O<br />
OEt<br />
O<br />
O<br />
1 R P<br />
R P<br />
EtO OH<br />
O OEt<br />
1<br />
NaOH CuI<br />
DMF<br />
NXS, DMF<br />
Pd (II)<br />
R 1<br />
Me 3SiBr<br />
R 1<br />
O<br />
51<br />
R 3<br />
R 2<br />
P O<br />
OEt<br />
O<br />
R<br />
P O<br />
OH<br />
or<br />
R 2<br />
R 1<br />
O<br />
R 2<br />
R 4<br />
R 2<br />
P O<br />
OEt<br />
Scheme 1<br />
These novel synthetic phosphorus heterocycles have showed medium inhibitory activity to<br />
protein tyrosine phosphatase 1B (PTP1B) and good cytotoxicity against the human cancer cells<br />
HepG2 and BGC through the in vitro bioactivity experiments.<br />
Reference<br />
[1] Powers, J. C.; Asgian, J. L.; Ekici, Ö. D.; James, K. E. Chem. Rev. 2002, 102, 4639-4750, and references therein.<br />
[2] Quin, L. D.; A Guidorus Chemistry, e to Organophosph John Wiley & Sons, Inc., New York, 2000, Chapter 11.<br />
[3] Ai-Yun Peng, Yi-Xiang Ding. J. Am. Chem. Soc. 2003, 125, 15006-15007.<br />
[4] Peng, A. –Y.; Ding, Y.-X. Org. Lett. 2004, 6, 1119-1121.<br />
[5] Ai-Yun Peng, Yi-Xiang Ding. Tetrahedran 2005, 61, 10303- 10308.
P-14<br />
NUCLEOPHILIC PHOSPHINE-CATALYZED [3+2] CYCLOADDITION OF<br />
ALLENES WITH N-(THIO)PHOSPHORYL IMINES: FACILE SYNTHESIS<br />
OF SUBSTITUTED 3-PYRROLINES<br />
Bo Zhang, Zhengjie He *<br />
The State Key Laboratory of Elemento-Organic Chemistry, and Department of Chemistry, Nankai University, Tianjin<br />
300071, China<br />
In recent years, carbon-carbon bond-forming reactions catalyzed by nucleophilic phosphine have<br />
attracted much attention1,2. One of these kinds of reactions is the cycloaddition reaction of allenes<br />
with imines, forming 4-, 5-, or 6-membered N-heterocycles3. Due to the importance of these<br />
N-heterocyclic compounds in the organic synthesis and pharmaceuticals, the relating reaction has<br />
been extensively studied. Aryl substituted N-tosyl imine compounds were most commonly used for<br />
the reaction for their better reactivity, giving N-tosyl heterocycle products. However, since tosyl<br />
group is not easy to be removed under mild conditions, therefore in most cases, products have been<br />
reported as N-tosylated ones. Few attempts were successful in giving corresponding deprotected<br />
N-heterocycles but other new products, even if much easy-removed sulfonyl groups like Nosyl and<br />
2-trimethylsilylethanesulfonyl were used3c.<br />
As part of our research on nucleophilic phosphine-catalyzed carbon-carbon bond-forming<br />
reactions4, we herein report the preliminary results on the cycloaddition reaction of allenes with<br />
N-(thio)phosphorylated imines. The cycloaddition reaction was catalyzed by an air stable<br />
trialkylphosphine PTA (1,3,5-triaza-7-phosphaadmantane), and afforded [3 + 2] cycloaddition<br />
products N-(thio)phosphoryl 3-pyrrolines with good yields, which were smoothly deprotected<br />
through HCl-mediated acidic methanolysis to 3-pyrrolines. Thus, a facile synthesis for substituted<br />
3-pyrrolines is established.<br />
R 1<br />
+ N<br />
EWG<br />
R2 P PTA<br />
P<br />
N R<br />
EWG<br />
2<br />
R1 52<br />
HCl<br />
CH 3OH<br />
R 1<br />
H<br />
N<br />
R 2<br />
EWG<br />
R 1 = Alkyl, H, Phenyl; R 2 = Aryl; P = P(S)(OEt) 2, P(S)Ph 2, P(O)(OEt) 2; EWG = CO 2Et<br />
Acknowledgment: The authors gratefully acknowledge financial support for this study from the National Natural<br />
Science Foundation of China (Grant No. 20421202; 20672057).<br />
References<br />
1. X. Lu, C. Zhang, Z. Xu, Acc. Chem. Res. 2001, 34, 535-544.<br />
2. J. L. Methot, W. R. Roush, Adv. Synth. Catal. 2004, 346, 1035-1050.<br />
3. For recent examples, see: a) X.-F. Zhu, J. Lan, O. Kwon, J. Am. Chem. Soc. 2003, 125, 4716-4717; b) G.-L. Zhao,<br />
4. M. Shi, J. Org. Chem. 2005, 70, 9975-9984; c) X.-F. Zhu, C. E. Henry, O. Kwon, Tetrahedron 2005, 61,<br />
6276-6282.<br />
5. Z. He, X. Tang, Y. Chen, Z. He, Adv. Synth. Catal. 2006, 348, 413-417.
P-17<br />
DISELENOPHOSPHATES: SYNTHESIS, REACTION WITH ELECTROPHILES,<br />
AND P-Se BOND CLEAVAGE<br />
Chen-Wei Liu<br />
Department of Chemistry, National Dong Hwa University, Hualien 974, Taiwan<br />
Fax: 886-3-8633570, E-mail: chenwei@mail.ndhu.edu.tw<br />
Dialkyl diselenophosphates, Se2P(OR)2 - , abbreviated as dsep can be prepared in good yields by<br />
reacting P2Se5 with various alcohols, and isolated as ammonium salts. The central phosphorus atom<br />
adopts tetrahedral structure, proved by single crystal X-ray diffraction analysis. Se of dsep ligand, a<br />
good nucleophile,which can react with acyl chloride to form (1), can also react with propargyl<br />
bromide to form (2). Compound (3) (scheme 1) can be obtained by performing Michael addition<br />
reaction using dsep ligand and but-3-en-2-one as reactants. Interestingly, a rare selenophosphito<br />
moiety of iron, CpFe(CO)2P(Se)(OR)2 (4), was obtained by treatmenting dsep ligands with<br />
[CpFe(CO)2]2 in refluxing toluene (scheme 2). The observed selenophosphito fragment in (4)<br />
clearly suggests that P-Se bond cleavage can occur in the process of thermal reaction of<br />
[CpFe(CO)2]2 with phosphor-1,1-diselenolates. The novel reagent, (4), finally exhibits not only<br />
coordination properties at Se center by forming heterometallic clusters but also reactivity at Se-site<br />
towards C-based electrophiles.<br />
Scheme 1<br />
Scheme 2<br />
NH 4Se 2P(O i Pr) 2<br />
OC<br />
Fe<br />
O<br />
C<br />
C<br />
O<br />
Fe<br />
CO<br />
O<br />
CH2Cl2, N2, RT,8hr<br />
CH3COCl CH2Cl2, N2, RT, 1hr<br />
HC CCH2Br<br />
CH 2Cl 2, N 2, RT,1hr<br />
RO<br />
+ P<br />
RO<br />
Se<br />
Se<br />
53<br />
O<br />
O<br />
Se<br />
P<br />
Oi O<br />
Pr<br />
iPr (3)<br />
Se<br />
Se<br />
Se<br />
Se<br />
P<br />
Se<br />
O i Pr<br />
P<br />
O i Pr<br />
OiPr (2)<br />
O i Pr<br />
(1)<br />
Toluene<br />
Fe<br />
110<br />
OC<br />
OC<br />
o Se<br />
(4)<br />
C, 4 h P<br />
OR<br />
RO
P-23<br />
TRICYCLES SYNTHESIZED BY THE REACTION OF PCl5 WITH<br />
OPEN-CHAINED MOLECULES<br />
Ferdinand Belaj<br />
Institut für Chemie, Karl-Franzens-Universität Graz, Schubertstr. 1, Austria. E-mail: ferdinand.belaj@uni-graz.at<br />
The tricyclic reaction products of PCl5 with two open-chained molecules containing C=O and<br />
NH2 groups are characterized by single-crystal structure determinations: The reaction of oxamide<br />
with PCl5 [1] resulted in the symmetric compound (I) formed by a ring closure reaction followed by<br />
a [2+2] cycloaddition:<br />
The reaction of glutamic acid with PCl5 takes a completely different course and the hitherto<br />
unknown unsymmetric compound (II), a derivative of the dipeptide cyclo(prolyl-proline), was<br />
formed repeatedly:<br />
Obviously, no phosphorus atoms were incorporated in a ring closure reaction and PCl5 acts<br />
mainly as a dehydrating agent. The crystal structure determinations were performed at low<br />
temperature: Compound (I) has two half molecules in the asymmetric unit and shows almost planar<br />
tricycles arranged around centers of symmetry. The molecules of compound (II) lie on general<br />
positions.<br />
Reference<br />
[1] M. Becke-Goehring, Z. Anorg. Allg. Chem. 373: 245-257 (1970).<br />
54
P-24<br />
MONODENTATE SPIRO PHOSPHONITES: HIGHLY EFFICIENT LIGANDS FOR<br />
ASYMMETRIC HYDROGENATION OF NON-ACYLATED ENAMINES<br />
Guo-Hua Hou, Shou-Fei Zhu, Jian-Hua Xie, Qi-Lin Zhou*<br />
State Key Laboratory and Institute of Elemento-organic Chemistry, Nankai University Tianjin 300071, China<br />
In last few decades, the catalytic asymmetric hydrogenation of N-acylated enamines such as α-<br />
and β-N-acylamino acrylates, and enamides have been extensively studied, providing a highly<br />
enantioselective and convenient method for the synthesis of enantiomer-enriched primary and<br />
secondary amine derivatives. However, only a limited progress has been achieved in the direct<br />
preparation of chiral tertiary amines, which broadly occurred in biologically active molecules and<br />
natural products, by asymmetric hydrogenation of the simple N,N-dialkylenamines. Recently, we<br />
have synthesized a new type of phosphonite ligands containing a chiral 1,1′-spirobiindane scaffold.<br />
In this presentation we will report their application in Rh-catalyzed asymmetric hydrogenation of<br />
non-acylated enamines such as N,N-dialkylenamines, providing the corresponding chiral tertiary<br />
amines in high yields and excellent enantioselectivities (up to 99.9% ee).<br />
Ar 1<br />
N<br />
OH<br />
HO<br />
RPCl 2, Et 3N<br />
THF, rt, 1h<br />
(S)-SPINOL (S)-1<br />
Ar 2<br />
55<br />
O<br />
P<br />
O<br />
R<br />
H2 (10 atm)<br />
[Rh] (1 mol%) / (S)-1c (2.2 mol%)<br />
I 2 (2 mol%), HOAc (20 mol%), THF, rt<br />
a: R = Me<br />
b: R = i Pr<br />
c: R = t Bu<br />
d: R = Ph<br />
2 3 (up to 99.9% ee)<br />
Acknowledgment: We thank the National Natural Science Foundation of China, and the Ministry of Education of China<br />
for financial support.<br />
References<br />
(1) Lee, N. E.; Buchwald, S. L. J. Am. Chem. Soc. 1994, 116, 5985.<br />
(2) Tararov, V. I.; Kadyrov, R.; Riermeier, T. H.; Holz, J.; Börner, A. Tetrahedron Lett. 2000, 41, 2351.<br />
(3) Hou, G.-H.; Xie, J.-H.; Wang, L.-X.; Zhou, Q.-L. J. Am. Chem. Soc. 2006, 128, 11774.<br />
Ar 1<br />
N<br />
*<br />
Ar 2
P-25<br />
MICROWAVE-ASSISTED SYNTHESIS IN ORGANOPHOSPHORUS CHEMISTRY<br />
György Keglevich, Melinda Sipos, Anna Szekrényi, Eszter Dudás,<br />
Daniella Takács and Emília Hohmann<br />
Department of Organic Chemical Technology, Budapest University of Technology and Economics<br />
H-1521 Budapest, Hungary<br />
In the last decade, microwave (MW)-assisted accomplishment of syntheses has become<br />
widespread. We made use of MW irradiation in organophosphorus chemistry. First, the<br />
phospha-Mannich condensation of secondary amines, paraformaldehyde and >P(O)H species<br />
including P-heterocycles to afford aminomethylene-P(O)< derivatives was studied under MW and<br />
solventless conditions.<br />
O<br />
NH + (CH 2O) n + HP<br />
56<br />
MW<br />
O<br />
N CH 2 P<br />
Only in a part of the phospha-Michael reaction studied by us was the MW technique useful.<br />
The Diels-Alder cycloaddition of 1,2-dihydrophosphinine oxides with dienophiles was, however,<br />
highly promoted by MW irradiation, again in a solvent-free accomplishment. The<br />
2-phosphabicyclo[2.2.2]octene oxide derivatives were obtained in excellent yields.<br />
Cl<br />
Y<br />
O<br />
P<br />
Me<br />
CO 2Me<br />
CO 2Me<br />
CO 2Me<br />
CO 2Me<br />
MW<br />
Cl<br />
P<br />
O Y<br />
Me<br />
Y= aryl, alkyl, alkoxy<br />
O<br />
O<br />
MW<br />
N Ph<br />
Cl<br />
Y<br />
O<br />
P<br />
Et<br />
H<br />
O<br />
H<br />
N<br />
O Ph<br />
The inverse Wittig reaction of 1-trialkylphenyl cyclic phosphine oxides and dialkyl<br />
acetylenedicarboxylate results in the formation of the corresponding β-oxophosphoranes. The novel<br />
reaction is, however, rather slow as the completion requires 10 days at 150 °C. Application of MW<br />
without the use of any solvent brought a real breakthrough, as there was a 80-fold acceleration<br />
beside the much better efficiency. Moreover, aryl derivatives otherwise unreactive under traditional<br />
heating could also be involved in the reaction under discussion.<br />
P<br />
Ar O<br />
+<br />
CO 2R<br />
CO 2R<br />
Ar= 2,4,6-trialkylphenyl<br />
R= Me, Et<br />
MW<br />
Ar<br />
P<br />
CO 2R<br />
O CO 2R
P-30<br />
SYNTHESIS AND PROPERTIES OF PENTACOORDINATE PHOSPHORUS<br />
COMPOUNDS CONTAINING A PENTACOODINATE SILICON ATOM<br />
Hideaki Miyake, Naokazu Kano, and Takayuki Kawashima<br />
Department of Chemistry, Graduate School of Science, The University of Tokyo<br />
7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan<br />
Pentacoordinate phosphorus compounds have been vigorously studied because of their interesting<br />
structures and reactivities. A silicon atom can also be a pentacoordinate state and pentacoordinate<br />
silicon compounds have structures and reactivities similar to those of phosphorus analogues.<br />
Although compounds bearing both pentacoordinate phosphorus and silicon atoms are attractive due<br />
to their having two reactive sites, to the best of our knowledge, such a compound has never been<br />
reported. We previously reported synthesis of various phosphoranes and silicates by taking<br />
advantage of the Martin ligand which was known to stabilize effectively the pentacoordination<br />
states. Here we report syntheses and properties of several compounds bearing both pentacoordinate<br />
phosphorus and silicon atoms which are stabilized by the Martin ligands.<br />
Reaction of phosphoranide 1 and silane 2, both of which bore two Martin ligands, in THF gave<br />
compound 3a bearing both pentacoordinate phosphorus and silicon atoms bridged by the<br />
ring-opened THF unit. The structure was identified by the NMR and mass spectra. Compound 3a is<br />
the first example of a phosphorane bearing a pentacoordinate silicon atom.<br />
Analogous compounds 3b–d, which had shorter methylene chains than 3a, were synthesized by<br />
another method. Their detailed synthetic procedures, multinuclear NMR spectra of 3a-d and some<br />
of their reactions will also be discussed.<br />
57
P-31<br />
SYNTHESIS OF A NOVEL APICAL–EQUATORIAL–EQUATORIAL TYPE<br />
TRIDENTATE LIGAND AND CONSTRUCTION OF PENTACOORDINATE<br />
PHOSPHORUS COMPOUNDS<br />
Hideaki Yamamichi†, Shiro Matsukawa§, Yohsuke Yamamoto*,†<br />
† Department of Chemistry, Graduate School of Science, Hiroshima University<br />
1-3-1, Kagamiyama, Higashi-hiroshima 739-8526, Japan<br />
§ Institute for Advanced Materials Research, Hiroshima University<br />
1-3-1 Kagamiyama, Higashi-hiroshima 739-8530, Japan<br />
A new tridentate ligand precursor 1,1-bis(2-iodophenyl)-2,2,2-trifluoroethanol (1), which can<br />
bind an apical position and two equatorial positions of pentacoordinate trigonal bipyramidal (TBP)<br />
structure rigidly, was prepared. Phosphine sulfides cis- and trans-3a were isolated from O-protected<br />
bidentate ligand 2 in 29 and 31%, respectively. On the other hand, trans-3b was prepared as a single<br />
stereoisomer. Phosphoranes bearing the tridentate ligand and a fluorine atom 4a and 4b were<br />
prepared from 3a and 3b, respectively. It is interesting that both cis- and trans-3a gave the same<br />
product 4a.<br />
The structure of 4b was confirmed by the X-ray analysis. The more electronegative fluorine atom<br />
was located at the apical position in the TBP structure (P–F length: 1.6513(10) Å).<br />
The upfield-shifted 31P NMR signals and large coupling constants of 4a ( <br />
–46.2 ppm (d, 1JF–P<br />
= 743 Hz)) and 4b ( <br />
–38.6 ppm (d, 1JF–P = 747 Hz)) in CDCl3 suggested that these compounds<br />
have a pentacoordinate structure with a covalent P–F bond even in solution. A phosphorane bearing<br />
an apical SMe group was also prepared.<br />
58
P-34<br />
THE CATALYTIC RING-CLOSURE REACTION IN THE PRESENCE OF<br />
PHOSPHOROUS OXYCHLORIDE<br />
Hui Wang,Renzhong Qiao<br />
College of life science and technology, Beijing University of Chemical Technology, 100029 P. R. China<br />
On the basis of many literatures and patents [1] , ramifications of s-triazolo[3,4-b]<br />
-1,3,4-thiadiazoles have displayed many biological and physiological activities, including<br />
antiphlogistic, analgesic, antibacterial, antifungal, anti-tumor, antianxity, insecticidal, herbicidal,<br />
and plant-growth regulating activities. Consequently, such kinds of compounds are extensively<br />
studies in recent years. 3-aryl-4-amino-5-thione-1,2,4-Triazoles [2] (1) and 6- substituted-4-<br />
hydroxylnicotinic acids(2) were prepared as results of multistep reactions, the ring-closure of the<br />
two compounds above in the presence of phosphorus oxychloride gave a series of compounds,<br />
namely 3-aryl-6-(6-substituted-4chloropyridine-3-yl)-s-triazolo[3,4-b] -1,3,4-thia- diazoles(3),<br />
whose structures have been established by MS, IR, 1 H NMR spectra. The reaction was carried out<br />
for 6 to 8 hours when being refluxed with phosphorus oxychloride. During the process, the presence<br />
of phosphorus oxychloride is necessary since it can activate the carbonyl of -COOH in 2a-2b,<br />
enhance its electrophilic ability and improve the pericyclic reaction [3] , and also serve as appropriate<br />
solvent. The process is displayed as below:<br />
R1<br />
N N<br />
OH<br />
R1<br />
N<br />
NH2 SH<br />
+ R2<br />
N<br />
COOH<br />
POCl3<br />
relfux<br />
N<br />
N<br />
N<br />
S<br />
N<br />
1 2 3<br />
R1: a. H; b. 2,4-OCH3 R2: a. H ; b. 6- CH3<br />
Synthesis of 3-aryl-6-(6-substituted-4chloropyridine-3-yl)-s-triazolo[3,4-b]-1,3,4-thiadiazole<br />
Keywords: 1,2,4-triazolo[3,4-b]-1,3,4-thiadiazole; phosphorus oxychloride; Synthesis<br />
REFERENCES<br />
[1] ZHANG Zi-Yi, SUN Xiao-Wen. Heterocycles [J], 1998, 48: 561_584<br />
[2] Reid J. R. , Heindel N. D. . J. HeterocyclicChem. [J], 1976, 13: 925_926<br />
[3] Pant M. K. , Durgapal R. , Joshi P. C. . Indian J. Chem. [J], 1983, 22B: 712_713<br />
59<br />
Cl<br />
N<br />
R2
P-35<br />
DITHIOPHOSPHORYLATION OF CYCLIC MONOTERPENES<br />
Il’yas S. Nizamov 1, 2, Artiem V. Sofronov1, Rafael A. Cherkasov1, Liliya E. Nikitina3<br />
1 Kazan State University, Kremlievskaya Str., 18, Kazan, 420008, Russia,<br />
Email: Ilyas.Nizamov@ksu.ru Ilyas.Nizamov@ksu.ru<br />
2 A.E. Arbuzov Institute of Organic and Physical Chemistry, Arbuzov Str., 8, Kazan, 420088, Russia,<br />
3 Kazan State Medical University, Butlerov Str., 49, Kazan, 420012, Russia<br />
There is a considerable interest in derivatives of cyclic monoterpene series compounds containing<br />
functional groups due to their possible use as biological activity substances. The importance of<br />
these compounds is also related to their skeleton structure transformations. O,O-Dialkyl<br />
dithiophosphoric acids have been reported to react with terpenes such as -pinene and dipentene at<br />
100-200 o C with the formation of additives for lubricants [1, 2]. We assumed that the initial<br />
products obtained in these patent works undergo decompositions under severe conditions used. We<br />
have carried out the reactions of dithiophosphoric acids with such terpenes as racemic camphene,<br />
(+)-limonene, (1S)-(-)- -pinene and 3-carene under milder conditions and search appropriate<br />
catalysts of addition reactions. We have found that these reactions occur at room temperature for<br />
1-3 h in the presence of catalytic amounts of anhydrous ZnCl2 to yield adducts formed in<br />
accordance with Markovnikow’s rule. In the case of camphene the adduct formation is accompanied<br />
by skeleton transformation into norbornane structure.<br />
S<br />
(RO)<br />
2<br />
PSH +<br />
ZnCl 2<br />
(1 %)<br />
20 o C, 1-2 h<br />
S-P(OR)<br />
2<br />
R = Et, Pr-i<br />
The reactions O,O-dialkyl dithiophosphoric acids with (+)-limonene proceed with the participation<br />
of the exocyclic C=C bond.<br />
S<br />
(RO)<br />
2<br />
PSH +<br />
ZnCl 2<br />
(1 %)<br />
20 o C, 2-3 h<br />
60<br />
S<br />
S<br />
S-P(OR) 2<br />
R = Et, Pr-i<br />
The reactions studied are facilitated by Lewis acid cataysts (NiCl2, CuCl, CuCl2, FeCl3,<br />
BF3.Et2O, AlCl3). The reactions of O,O-dialkyl dithiophosphoric acids with (1S)-(-)- -pinene can<br />
also be performed non-catalytically.<br />
References<br />
[1] Pat. US 2611728 (1952). / Barlett J.H., Rudel H.W., Cyphers E.B., Chem. Abstr. 1953, 43, 2930a.<br />
[2] Pat. US 2665295 (1954). / Augustine F.B., Chem. Abstr. 1954, 48, 12807f.
P-36<br />
BACKGROUNDS FOR THE TECHNOLOGY FOR THE PREPARATION OF<br />
ORGANOPHOSPHOROUS PRECURSORS<br />
Magdeev I.M., Budnikova Yu.H., Muslinkin A.A., Nabiullin V.N., Berdnik I.V.<br />
A.E. Arbuzov Institute of Organic and Physical Chemistry, Russian Academy of Sciences, Arbuzov str. 8, Kazan,<br />
Russia, 420088. E-mail: magdeev@iopc.knc.ru<br />
Simple and effective techniques for the synthesis of methylolphosphonous,<br />
bis(methylol)phosphinic and chloromethylphosphonic acids, their chlorine anhydrids, phosphonates<br />
and phoshinates, possessing great synthetic potential, are elaborated.<br />
New directions of electrochemical synthesis of tertiary phosphines and phosphates from the<br />
elemental white phosphorus are suggested. The existing industrial technology of synthesis of<br />
phosphorus compounds is based on the use of chlorine and chloride of phosphorus, thus causing<br />
serious environmental problems and defining basic expenses of manufacture. Electrochemical<br />
single-stage method was developed for preparation of phosphorus compounds, such as tertiary and<br />
primary phosphines, trialkyl phosphates, including trioctylphosphate, phosphorous and<br />
hypophosphorous acid etc. These products find applications as softeners, additives to lubricant oils<br />
and liquid fuel, additives to polymers providing fire-resistance, and also as extracting agents,<br />
complexing agents as well as precursors for synthesis of other substances for practical purposes.<br />
61
P-37<br />
SYNTHESIS OF 1,2-AZAPHOSPHETIDINES WITH AMINO ACID FRAGMENT<br />
Inga M.Aladzheva, Olga V.Bykhovskaya, Pavel V.Petrovskii, Tatyana A.Mastryukova<br />
A.N.Nesmeyanov Institute of Organoelement Compounds Russian Academy of Sciences, Vavilov str., 28, Moscow<br />
119991, GSP-1, Russia, E-mail:shipov@ineos.ac.ru<br />
Very few 1,2-azaphosphetidines are known in spite of the great interest to their 2-oxo derivatives<br />
which are close structural analogues of azetidinones (β-lactams). Here we report a short synthetic<br />
route to 2-oxo 1,2-azaphosphetidines with amino acid fragment 3 via intramolecular alkylation of<br />
N-2-haloethyl amidophosphites 1. Two diastereomeres of compound 3 (R=Me) were obtained. By<br />
intramolecular alkylation of aminophosphines 2, hitherto almost unknown 1,2-azaphosphetidinium<br />
salts 4 were synthesized.<br />
R 2PN<br />
CH 2CH 2Cl<br />
CHR 1 COOMe<br />
1, 2<br />
R=EtO (1), Ph (2)<br />
R 1 =H, Me<br />
Δ<br />
R=EtO<br />
-EtCl<br />
R=Ph<br />
EtO<br />
O<br />
P<br />
Ph 2P<br />
CHR 1 COOMe<br />
N<br />
3<br />
CHR 1 COOMe<br />
N<br />
4<br />
Cl<br />
62<br />
1. 6N HCl, Δ<br />
2.<br />
O<br />
1. 6N HCl, Δ<br />
2. O<br />
O<br />
O<br />
P<br />
OH<br />
CH 2CH 2NH 2CHR 1 COOH<br />
5<br />
CH 2CH 2NH 2CHR 1 COO<br />
2-Oxo-1,2-azaphosphetidines 3 readily hydrolyzed with the P-N bond cleavage; as a result of the<br />
total hydrolysis, the derivatives both of β-aminophosphonic and α-amino carbon acids 5 with<br />
potential biological activity were produced. The total hydrolysis of 1.2-azaphosphetidinium salts 4<br />
resulted in the N-(2-diphenylphosphoryl)ethyl amino acids 6, potential complexing agents for<br />
metals of biological interest (Cu, Co, Ni etc).<br />
The work was supported by Russian Foundation for Basic Research (grant No. 05-03-3309).<br />
Ph 2P<br />
O<br />
6
P-38<br />
ASYMMETRIC SYNTHESES OF NEW PHOSPHONOTAXOIDS<br />
Irina V. Guliaiko, Oleg I. Kolodiazhnyi<br />
Institute of Bioorganic Chemistry and Petrochemistry, National Academy of Sciences of Ukraine<br />
Murmanskaia 1, Kyiv, UKRAINE e-mail: oikol123@rambler.ru<br />
The multiple asymmetric induction (multistereoselectivity) is an efficient method for increasing<br />
the stereoselectivity of the phospho-aldol reaction by employing more than one chiral auxiliary. For<br />
example chiral dialkylphosphites react with chiral aldehydes under the control by two chiral<br />
auxiliaries, which reinforced one another, to yield the diastereomers 2 with very good de. Chiral<br />
aldehydes 1 reacted with the (1R,2S,5R)-dimenthylphosphite or di-endo-bornylphosphite with the<br />
formation of either chiral (1S,2S)- or (1R,2S)-1-hydroxy-2-aminophosphonic acids 4. The reaction<br />
of dibenzylphenylalanynal 1 with tris(trimethylsilyl)phosphite afforded the<br />
(1R,2S)--hydroxy- aminoalkylphosphonic acid 5, which was purified by recrystallisation. The<br />
stereoselectivity of the reaction depended on the solvent, the nature of the bases and temperature.<br />
The absolute configuration of the addition product was proved by NMR spectroscopy and X-ray<br />
analysis<br />
Ph<br />
(R*O) 2 POH<br />
OH<br />
NBn 2<br />
2<br />
H 3 O +<br />
Ph<br />
DBU<br />
P(O)(OR*) 2<br />
OH<br />
NBn 2<br />
(1S,2S)-4<br />
Ph<br />
P(O)(OH) 2<br />
NBn 2<br />
1<br />
63<br />
O<br />
P(OSiMe) 3<br />
OH<br />
(Me SiO) P(O)<br />
3 2 Ph<br />
NBn2 1) Crystallization<br />
2) H3O +<br />
3<br />
OH<br />
(HO) 2P(O) Ph<br />
NBn 2<br />
(1R,2S)-5<br />
R*= (1R,2S,5R)-Mnt (80% ee), Brn (80% ee)<br />
The chiral 1-hydroxy-2-aminophosphonic acids were used for modification of Baccatin III in the<br />
synthesis of new taxoids – potential anticancer agents<br />
Baccatine-III<br />
AcCl/Py<br />
BnNH<br />
HO<br />
Bn<br />
DPC, DMAP<br />
PO 3 H 2<br />
BnNH<br />
References<br />
1. O. I. Kolodiazhnyi Tetrahedron: Asymmetry 2005, 16, 3295-3340<br />
2. O. I. Kolodiazhnyi, I. V. Guliaiko J. Rus.Gen.Chem 2005, 75, 1933-1934<br />
3. O. I. Kolodiazhnyi, I. V. Guliaiko J. Rus.Gen.Chem, in press<br />
HO<br />
Bn<br />
OH<br />
P<br />
O<br />
O<br />
AcO<br />
HO<br />
OBz<br />
O<br />
AcO<br />
OH<br />
H<br />
O
P-42<br />
X-RAY CRYSTAL STRUCTURE OF HYDROLYSATES OF<br />
TRIPHENYLPHOSPHINE DICHLORIDE<br />
Jian Chen Zhang 1 , Wen Ping Shi 1 , Jun Xu 2 , Yu Fen Zhao 3<br />
1<br />
Department of Chemical Defense, Institute of Chemical Defense, Beijing 102205<br />
2<br />
Department of Humanities and Basic Sciences, Zhengzhou College of Animal Husbandry Engineering<br />
Zhengzhou 450011<br />
3<br />
The Key Laboratory for Chemical Biology of Fujian Province, Department of Chemistry, University, Xiamen 361005<br />
The Appel coupling reagents triphenylphosphine and hexachloroethane were used in peptide<br />
synthesis 1,2 . The reaction of triphenylphosphine with hexachloroethane would produce<br />
triphenylphosphine dichloride (Ph3PCl2). Until recently, Godfrey and coworkers 3 prepared the<br />
solid state Ph3PCl2, which was characterized by X-ray crystal diffraction. In the course of<br />
studying the reaction character of triphenylphosphine and hexachloroethane, two hydrolysates of<br />
triphenylphosphine dichloride, [Ph3POH]Cl and [Ph3PO]2[H2O][H3O]Cl, were obtained.<br />
Triphenylphosphine dichloride was prepared from the direct reaction of triphenylphosphine with<br />
hexachloroethane in benzene in a 1:1 stoichiometric ratio at room temperature, and the reaction<br />
procedure was traced by 31 PNMR spectra. It was found that the peak of triphenylphosphine (δ<br />
-4.76 ppm) was gradually decreased; meanwhile the peak at δ -44 ppm was appeared and gradually<br />
increased. Compared with the NMR spectrum of crystalline Ph3PCl2 in C6D6 (δ –47 ppm) 3-6 , this<br />
value of δ –44 ppm was confirmed the resonance of the non-solvated molecular species Ph3PCl2.<br />
In addition, the peak of δ 27 ppm was unchangeable in the reaction procedure, which was validated<br />
with the authentic sample of triphenylphosphine oxide.<br />
Under an atmosphere of dry nitrogen, no solid could isolate from the above solution. But under<br />
an atmosphere of air, a small quantity of colorless crystals was observed. Analyzed by 31 PNMR and<br />
ESI-MS spectra, it was validated to be not the molecular structure Ph3PCl2 but the hydrolysates of<br />
Ph3PCl2. Therefore, this was considered that the reaction solution possibly adsorbed moisture<br />
from air and triphenylphosphine dichloride was hydrolyzed. Therefore, added 1 or 2<br />
stoichiometric ratio water to the reaction solution respectively, two colorless crystals were gradually<br />
produced on standing at room temperature for ca. 4 hrs. Those were chosen for analysis by single<br />
crystal X-ray diffraction and were validated as [Ph3POH]Cl (Figure 1) and [Ph3PO]2[H2O][H3O]Cl<br />
(Figure 2), respectively. They are ionic species and tetrahedral structure. Two crystals were<br />
dissolved in deuterated chloroform and a single resonance was observed in the NMR spectrum at δ<br />
40, 35 ppm, respectively.<br />
Figure 1 X-ray crystal structure of [Ph3POH]Cl. Figure 2 X-ray crystal structure of [Ph3PO]2[H2O][H3O]Cl.<br />
64
References<br />
1. R. Appel and H. Scholer, Chem. Ber., 1979,112, 1065.<br />
2. R. Appel and L. Willms, Chem. Ber., 1979, 112, 1057.<br />
3. S. M. Godfrey, C. A. Mcauliffe, R. G. Pritchard, J. M. Sheffield, Chem. Commun., 1998, 921.<br />
4. M. A. H. A. Al-Juboori, P. N. Gates, A. S. Muir, J. Chem. Soc., Chem. Commun., 1991, 1270.<br />
5. S. M. Godfrey, C. A. Mcauliffe, R. G. Pritchard, J. M. Sheffield, Chem. Commun., 1996, 2521.<br />
6. G. Tang, G. J. Ahou, F. Ni, L. M. Hu, Y. F. Zhao, Chin. Chem. Lett., 2005, 16(3), 385.<br />
65
P-46<br />
THE SYNTHESIS OF 7,11,18,21-TETRAOXA-1,3,5,13,15,17-HEXAAZA-2,4,6λ5,12λ5,<br />
14,16-HEXAPHOSPHATRISPIRO[5.2.2.5.2.2]HENEICOSA-1,3,5,12,14,16-HEXAENE<br />
Ju Zhiyu 1 , Zou Ruyi 1 , Yin Zhengming 1 , Ye Yong 1* , Liao Xincheng 1 , Zhao Yufen 1,2*<br />
1<br />
Key Laboratory of Chemical Biology and Organic Chemistry of Henan Province, Department of Chemistry,<br />
Zhengzhou University , Zhengzhou 450052, PR China<br />
2<br />
Key Laboratory of Bioorganic Phosphorus Chemistry and Chemical Biology, Ministry of Education, Department of<br />
Chemistry, Tsinghua University , Beijing 100084, PR China<br />
In 1970’s, cyclophosphazene derivatives, kinds of widely researched compounds, can be applied<br />
as flame retardant of self-extinguish ability in plastics and fibers. 1 Many of articles has also reported<br />
that they can form an intumescent flame retardant system with their excellent fire retardant<br />
properties. 2-3 It was reported that the reaction of hexachloro- cyclophosphazene (HCCP) with<br />
pentaerythritol(2:1) gave rise to three kinds of spirane derivatives (Scheme 1). 4 According to<br />
reference, the compound 1 can be obtained in 15% yield. Recently, we successfully synthesized<br />
compound 1 in a moderate yield. The title compound was obtained in 48% yield by adding solid<br />
pentaerythritol to the solution of HCCP below -5 0 C. After stirred for 10 h, then the solution was<br />
refluxed for approximately 24 h, Further researches are now in progress in our laboratory.<br />
Cl<br />
Cl P<br />
N<br />
N Cl HO<br />
P +<br />
Cl P N<br />
Cl<br />
Cl HO<br />
OH CH2Cl2 OH<br />
Py<br />
Cl<br />
Cl P N O<br />
N P<br />
Cl P N O<br />
Cl<br />
1<br />
Cl<br />
Cl<br />
O N P Cl Cl P N O<br />
P N + N P<br />
O N P Cl Cl P N O<br />
Cl<br />
Cl 2<br />
Scheme 1<br />
66<br />
Cl<br />
Cl<br />
O P N Cl Cl P N O<br />
N P + N P<br />
O P N Cl Cl P N O<br />
Cl<br />
Cl<br />
Project supported by the Chinese National Natural Science Foundation (NO.20602032).<br />
References<br />
1. Kumar D, Fohlen G M, Parker J A., J. Polym. Sci., 1984, 22, 927-943.<br />
2. Hofle G, Steglich W.D., Angew. Chem. Int. Ed. Engl., 1978, 17, 569.<br />
3. Liang HB, Asif A, Shi WF., Polym. Degrad. Stab., 2005, 87, 495.<br />
4. Al-Madfa H.A., Shaw L.S., Shaw R.A., Phosphorus, Sulfur, Silicon, 1991, 56, 133-142.<br />
3<br />
OH<br />
OH
P-47<br />
P-NITROPHENOXYCARBONYLPHOSPHONATE DIESTERS-POTENT REAGENTS<br />
FOR THE SYNTHESIS OF HINDERED CARBAMOYLPHOSPHONATES<br />
Julia Frant, Irena Beylis, Naama Mussai, Reuven Reich and Eli Breuer<br />
Department of Medicinal Chemistry, School of Pharmacy,<br />
The Hebrew University of Jerusalem, Jerusalem, 91120 Israel<br />
Matrix metalloproteinases (MMPs) are a family of about 26 zinc-dependent endopeptidases,<br />
which collectively have the capacity to degrade all the major components of the extracellular matrix.<br />
Although the MMPs play a crucial role in physiological tissue remodeling, growth and repair, their<br />
over-expression has been linked with severe chronic pathological conditions, including cancer,<br />
arthritis, several cardiovascular disorders and others. The efficient inhibition of MMPs is, therefore,<br />
an important scientific and therapeutic target, which has attracted considerable attention within<br />
academia and industry for the last two decades. Yet, in spite of intensive worldwide research, which<br />
has yielded a multitude of highly in vitro potent inhibitors, no clinically useful inhibitor has been<br />
achieved.<br />
We are involved in a research program directed toward the design and synthesis of new MMP<br />
inhibitors, based on the carbamoylphosphonic functional group. , In this context, we have envisioned<br />
several sterically hindered carbamoylphosphonates. However, these target compounds were not<br />
accessible by the existing synthetic methods, namely by the reaction of a hindered cycloalkylamine<br />
with trialkyl phosphonothiolformate, or by conversion of the amine to an isocyanate, followed by<br />
reaction with a dialkyl H-phosphonate.<br />
We have considered that the reactivity of the carbonyl group in trialkyl phosphono-thiolformate,<br />
[RS-CO-P(O)(OR)2], could be increased by replacing the alkylmercapto group with the more<br />
strongly electron withdrawing p-nitrophenyl group. The resulting p-nitrophenyl dialkyl<br />
phosphonoformate [O2N-C6H4-CO-P(O)(OR)2], indeed proved to be a far more reactive than<br />
trialkyl phosphonothiolformate, and hindered carbamoylphosphonates, that could not be obtained<br />
even under harsh conditions such as prolonged heating and the presence of catalysts, this reagent<br />
gave the desired products in a few minutes at room temperature.<br />
Our poster will present examples of compounds that were successfully synthesized by reacting<br />
various sterically hindered amines with p-nitrophenyl dialkyl phosphonoformates.<br />
67
P-48<br />
PHOSPHORYLATION OF DIHYDROXY ANTHRAQUINONES BY<br />
ATHERTON-TODD REACTION<br />
Jun-Feng Zhao, 1 Xian-Li Wu 1 , Si-Xing Zhang, 1 Xin-Cheng Liao,* 1 Shu-Xia Cao 1 , Yan-Chun Guo 1 1, 2<br />
, and Yu-Fen Zhao<br />
1. Department of Chemistry, the Key Laboratory of Chemical Biology, Zhengzhou University, Zhengzhou 450052,<br />
Henan,P.R.China E-mail: lxc66@zzu.edu.cn Tel: +86371-67767050<br />
2. Department of Chemistry, the Key Laboratory for Bioorganic Phosphorus Chemistry and Chemical Biology, Ministry<br />
of Education, School of Life Sciences and Engineering, Tsinghua University, Beijing 100084, P.R.China<br />
The phosphorylation and dephosphorylation of proteins play an important role in regulation<br />
complicated biochemical processes. Moreover,phosphorylated biomolecules and medical molecules<br />
have many unique activities and characteristics. We studied the phosphorylation of dihydroxy<br />
anthraquinones by Atherton-Todd reaction. Two kinds of dihydroxy anthraquinones was<br />
successfully phosphorylated by diethylphophite (DEPPH) and diisopropylphophite(DIPPH).<br />
R 2<br />
O<br />
O<br />
OH<br />
R 1<br />
+<br />
O<br />
P<br />
H<br />
RO OR<br />
68<br />
HCCl 3/NEt 3<br />
R=CH 2CH 3 or CH(CH 3) 2<br />
1a-b 2a-d<br />
Scheme 1. Phosphorylation of different dihydroxy anthraquinones<br />
R 2'<br />
Table 1. Particular substituents of all compounds<br />
Compound No. R1 (R1’) R2 (R2’)<br />
1a OH H<br />
1b H OH<br />
2a OP(O)(OCH2CH3)2 H<br />
2b OP(O)(OCH(CH3)2)2 H<br />
2c H OP(O)(OCH2CH3)2<br />
2d H OP(O)(OCH(CH3)2)2<br />
O<br />
O<br />
OH<br />
R 1'
P-49<br />
DECOMPOSITION REACTION OF<br />
TETRA-HYDROXYMETHYLPHOSPHONIUM CHLORIDE<br />
Kaiqi Shi, Ya Li, Lan Jiang, Qiaoyun Ye, Shuangxi Shao,<br />
Institute of Applied Chemistry, NingboUniversity of Technology, Ningbo, China 315016<br />
At present, tetra-hydroxymethyl phosphonium chloride (THPC) is widely used in flame retardant<br />
finish, industrial circulating cooling water treatment and leather manufacture industry, and it will<br />
decompose and may yield tri-hydroxymethyl phosphonium (THP), tri-hydroxymethyl phosphonium<br />
hydroxide (THPH), or tri-hydroxymethyl phosphine oxide (THPO) in application process. To<br />
understand the decomposition reaction of THPC in different pH condition, the experiment is carried<br />
out. Firstly, we determine the THPC content of THPC solution with pH=4.0~13.0 by the indirect<br />
iodimetry method, respectively. When pH=4.0~6.0, the THPC content is between<br />
70.34%~71.33%. When pH=7.0~9.0, the THPC content is between 56.90%~58.12%, and when<br />
pH=10.0~13.0, the THPC content is between 0.22%~0.94%. Consequently, we find that THPC<br />
content decreases when pH of the THPC solution rising, and there are two sudden changes at<br />
pH=6.0 and pH=9.0. Then, by FT-IR and 31 P NMR, we analyze the structures of phosphorus<br />
compounds in the THPC solution at pH=4.0, pH=6.0 and pH=9.0. The 31 P NMR results show that<br />
the chemical shifts of -27ppm, -23ppm, 26ppm and 49ppm are the absorptions of THPH, THP,<br />
THPC and THPO respectively. The contents of THP, THPH and THPO increase while the content<br />
of THPC decreases. At pH=6.0, the absorption of THPH appears. When pH=9.0, the absorption<br />
of THPC vanishes. Therefore, the decomposition reaction of THPC may reach an equilibrium<br />
between pH=6.0 and pH=9.0, and the complete decomposition would take place when pH>9.0.<br />
Furthermore, the Wang-Ford charge distributions of the main phosphorus compounds in THPC<br />
solution are also calculated by the Cambridge chemical software to investigate their reactivity.<br />
From the charge distributions analysis, we conclude that THP is the most stable phosphorus<br />
compound, while THPO, comparing with the other three phosphorus compounds, have higher<br />
reactivity due to its high asymmetric charge distribution, which could give a favorable guide in<br />
application.<br />
69
P-50<br />
PHOSPHONILATION OF 1,3-DIARYL-2,3-DIHYDRO-1Н-NAPHTH[1,2-Е][1,3]OXAZINE<br />
BY DIALKYL AND DIARYL PHOSPHONATES<br />
Kirill E. Metlushka 1 , Vladimir A. Alfonsov 1 , Charles E. McKenna 2 , Boris A. Kashemirov 2 , Olga N. Kataeva 1 , Viktor F.<br />
Zheltukhin 1 , Dilyara N. Sadkova 1 , Alexey B. Dobrynin 1<br />
1A.E.Arbuzov Institute of Organic and Physical Chemistry, Kazan Scientific Center of the Russian Academy of<br />
Sciences, 8 Arbuzov St., Kazan, 420088 Russian Federation. Email: alfonsov@iopc.knc.ru<br />
2Department of Chemistry, University of Southern California, Los Angeles, CA 90089 USA<br />
Chiral 1-(α-aminobenzyl)-2-naphthols, known as Betti bases, are available from the condensation<br />
of β-naphtol with benzaldehydes and ammonia or amines. These compounds are of interest to<br />
chemists who work on asymmetric syntheses and are seeking enantiopure chiral inductors or chiral<br />
precursors. Recently, Hu et al. (J. Org. Chem., 2005, 70, 8617) reported resolution of isolated Betti<br />
base as an L-(+)-tartaric acid salt. We report here resolution of the Betti base condensation product<br />
1 (formed in situ from 2-naphthol, ammonia and benzaldehyde) using L-(+)-tartaric acid. The<br />
oxazine 1 in CDCl3 solution exists as a mixture of tautomers of oxazine and imine forms,<br />
resonances from all forms being present in the 1H NMR spectrum.<br />
The products of this reaction are (S)-(+)-1-(α-aminobenzyl)-2- naphthol tartrate 2, the acetal of<br />
benzaldehyde and tartaric acid 3 and (R)-(-)-1,3-diaryl-2,3-dihydro-1Н-naphth[1,2-е][1,3]oxazine,<br />
which can be easily separated by crystallization. The addition reactions of dialkyl- and<br />
diphenylphosphite with racemic and enantiopure 1 and its 4-arylsubstituted derivatives have also<br />
been studied. The reactions proceed diastereoselectively with formation of aminophosphonates 4.<br />
This work was supported by the Civilian Research and Development Foundation (grant no.<br />
RUC2-2638-KA-05) and the Russian Foundation for Basic Research (grant no. 03-03-33082).<br />
70
P-51<br />
DIMENTHYL (2R)-2-HYDROXY-3-CHLOROPROPYLPHOSPHONATE – ACCESSIBLE<br />
CHIRON FOR THE ASYMMETRIC SYNTHESIS OF HYDROXYPHOSPHONATES<br />
Kolodiazhnyi O.I., Nesterov V.V.<br />
Institute of Bioorganic Chemistry and Petrochemistry, National Academy of Sciences of Ukraine,<br />
Murmanskaia 1, Kyiv, UKRAINE e-mail: oikol123@rambler.ru<br />
Optically pure dimenthyl (2R)-2-hydroxy-3-chloropropylphosphonate 1 was synthesized by<br />
reaction of the di(1R,2S,5R)-menthylketophosphonate 2 with the chiral complex 3 [1]. The<br />
reduction of the ketophosphonate 2 by this complex proceeded under the control of double<br />
asymmetric induction [2] and resulted in the formation of the hydroxyphosphonate 1 with high<br />
optical and chemical yields. The compound 1 was isolated as a crystalline stereochemically pure<br />
substance with ~100 % de. The compound 1 is accessible chiron, which was used for the<br />
preparation of a number of biologically important enantiomerically pure products, including<br />
amino- -hydroxybutyric acid (phospho-GABOB) 4, 2,3-aziridinopropylphosphonate 6,<br />
2,3-epoxypropylphosphonate 7, phospho-carnitine 8, etc in multigramme scale. The structure,<br />
chemical and optical purity, absolute configurations of all synthesized compounds were carefully<br />
investigated [3,4].<br />
(RO) 2 P<br />
O<br />
O<br />
(RO) 2 P(O)<br />
R=Mnt, H;<br />
2<br />
O<br />
HO OH<br />
H<br />
O -<br />
B<br />
O<br />
8<br />
H<br />
3<br />
OH<br />
H<br />
O<br />
Cl<br />
Na +<br />
+<br />
NMe3 Me 3 N<br />
(RO) 2 P(O)<br />
O<br />
(RO) 2 P<br />
O<br />
(RO) 2 P<br />
71<br />
OH<br />
H<br />
4<br />
OH<br />
H<br />
1, ~100% de<br />
O<br />
H<br />
NH 2<br />
Cl<br />
NaN 3<br />
(RO) 2 P(O)<br />
(RO) 2 P(O)<br />
References<br />
1 V. V. Nesterov and O. I. Kolodiazhnyi Tetrahedron: Asymmetry 2006, 17, 1023-1025<br />
2 O.I. Kolodiazhnyi Tetrahedron, 2003, 59, 5953-6018.<br />
3 V. V. Nesterov and O. I. Kolodiazhnyi J. Rus. Gen. Chem. 2006, 76, 1068-1077<br />
4 O. I. Kolodiazhnyi Tetrahedron: Asymmetry 2005, 16, 3295-3340<br />
3<br />
7<br />
OH<br />
H<br />
(R)-5<br />
(R)- 6<br />
N 3<br />
H<br />
N<br />
H
P-55<br />
SYNTHESIS N-PHOSPHORYLATED CHRYSIN-7-YL AMINO ACID ESTERS<br />
Li Wenfeng 1 , Chen Xiaolan 1 , Yuan Jinwei 1 , Qu Lingbo 1,2 , Zhao Yufen 1,3<br />
1<br />
Department of Chemistry, Zhengzhou University, Zhengzhou, 450052, P. R. China<br />
2<br />
Anyang Normal College, Henan Province, Anyang, 455002, P. R. China<br />
1, 3<br />
The Key Laboratory for Bioorganic Phosphorus Chemistry, Department of Chemistry School Life Sciences and<br />
Engineering, Tsinghua University, Beijing, 10084, P. R. China<br />
Chrysin, 5,7-dihydroxyflavone, which is widely distributed in plants, is known to have many<br />
biological activities including antibacterial, antioxidant, anti-inflammatory, anti-allergic, anticancer,<br />
anti-estrogenic, and anoxiolytic activities. [1] Efforts to improve the biological activity of chrysin<br />
have led to the synthesis of derivatives by appropriate modification. [2] The modification mainly<br />
centers on aromatic ring (either A or C) substitutions in chrysin. N-phosphorylated amino acids<br />
have been shown to play an important role in probing the origin of life. At the same time, they have<br />
wide applications in the fields of biotechnology, and medicine. [3] Within the pharmaceutical<br />
industry, phosphate esters are often used as pro-drugs to increase the bio-availability of the a drug. [4]<br />
In the work described in this paper, we introduce an N-phosphorylated amino acid into chrysin<br />
modification. Five new analogs have been synthesized(scheme1) and their structures have been<br />
determined by ESI-MS, NMR and IR.<br />
HOOC<br />
R<br />
NH 2<br />
HO<br />
O<br />
O<br />
((CH 3) 2CHO) 2-PH<br />
H 2 O/Et3N/EtOH OH O<br />
THF, DMAP, DCC<br />
72<br />
R<br />
O<br />
HOOC<br />
O<br />
NH<br />
P O<br />
O<br />
R<br />
O<br />
NH<br />
O<br />
P O<br />
O<br />
O<br />
OH O<br />
a~e<br />
a: R=Methyl<br />
b: R=isopropyl<br />
c: R=isobutyl<br />
d: R=2-butyl<br />
e:phosphated L-Proline<br />
Scheme 1<br />
References<br />
1. Hecker, M.; Preiss, C.; Klemm, P.; Busse, R. Br. J. Pharmacol. 1996, 118, 2178.<br />
Fishkin, R. J.; Winslow, J. T. Psychopharmacology (Berl.) 1997, 132, 335<br />
2. Shin, J. S.; Kim, K. S.; Kim, M. B. et al. Bioorg. Med. Chem. Lett. 1999, 9, 869;<br />
Dao, T.-T.; Chi, Y.-S.; Kim,J.; Bioorg. Med. Chem. Lett. 2004, 14, 1165.<br />
3. Zhao Yufen; Zhang Jianchen; Xu Jun et al Chinese Jounal of Organic Chemistry, 2004,24,6609<br />
4. Jones S.; Selitsianos D.; Thompson K. J. et al. J. Org. Chem. 2003, 68(13), 5211-5216.
P-57<br />
APPLICATIONS OF LAWASSON’S REAGENT IN SYNTHESIS OF BIOLOGICALLY<br />
ACTIVE PHOPSHORUS-HETEROCYCLES<br />
Liang-Nian He*, Jin-Quan Wang, Ya Du, Fei Cai<br />
State Key Lab of Elemento-organic Chemistry, Nankai University, Tianjin, 300071, P. R. China<br />
Our research interest has been focused on the development of new synthetic methodology<br />
centered around biologically active phosphorus heterocycles, because functionalized phosphorus<br />
heterocycles and their derivatives are of great interest bioactive substances with various properties.<br />
We disclosed a methodology for 5-membered and 6-membered phosphorus heterocycles with<br />
biological activity via cyclization of Lawesson’s reagent, 2,4-bis(4-methoxyphenyl)-1,3,2,4-<br />
dithiadiphosphetane-2,4-disufide, with bifunctional substrates. This cyclization reaction of<br />
Lawesson’s reagent was successfully applicable to other bifunctional compounds to afford different<br />
kinds of phosphorus-heterocycles. That prompts us to develop a method for synthesis of the fused,<br />
spiro phosphorus-heterocycles, 7-membered P-heterocycles, 6-membered P, S-heterocycles and<br />
other P- and S-containing compounds, as shown in Scheme 1. Preliminary bioassays revealed that<br />
some of the title compounds possess selective herbicidal activity.<br />
Ar<br />
S<br />
R 2<br />
R 1<br />
R 2<br />
O<br />
P<br />
O<br />
Cl<br />
Cl<br />
Cl<br />
O P<br />
O P<br />
Cl<br />
S<br />
S<br />
Ar<br />
Ar<br />
S<br />
N<br />
O S<br />
P<br />
Ar<br />
O<br />
P<br />
N<br />
NEt 2<br />
O<br />
R<br />
N<br />
R 2<br />
R 1<br />
R 2<br />
S<br />
N<br />
N<br />
P<br />
Cl<br />
Cl<br />
73<br />
Ar<br />
O<br />
N<br />
R 1 R 2 R 1<br />
S<br />
Cl<br />
O<br />
O P<br />
S<br />
Ar<br />
Cl<br />
N<br />
S<br />
P<br />
N<br />
NEt 2<br />
S<br />
S<br />
N<br />
N<br />
N<br />
N<br />
P O<br />
Ar<br />
S<br />
P O<br />
Ar<br />
Scheme 1<br />
References<br />
1. M. Jesberger, T. P. Davis, L. Barner, Synthesis, 2003, (13), 1929.<br />
2. a) L. He, Y. Luo, K. Li, G. Yang, M. Ding, X. Liu, T. Wu, Phosphorus, Sulfur, and Silicon and the Related<br />
Elements, 2002, 177, 2675; b) L. He, Y. Luo, K. Li, M. Ding, A. Lu, X. Liu, T. Wu, F. Cai, Synth. Commun., 2002,<br />
33(9), 1415; c) L. He, Y. Luo, M. Ding, A. Lu, X. Liu, T. Wu, F. Cai, Heteroatom Chem., 2001, 12(6), 497; d) Y. Luo,<br />
L. He, M. Ding, G. Yang, A. Lu, X. Liu, T. Wu, Heterocyclic Commun., 2001, 7(1), 37; e) L. He, Y. Luo, M. Ding, A.<br />
Lu, X. Liu, T. Wu, F. Cai, Heteroatom Chem., 2001, 12(6), 497; f) L.-N. He, R.-X., Zhuo, R.-Y. Chen, Y.-J. Zhang,<br />
Heteroatom Chem., 1999, 10(2), 105; g) L.-N. He, T.-B. Huang, F. Cai, R.-Y. Chen, Phosphorus, Sulfur, and Silicon<br />
and the Related Elements, 1998, 132, 147; h) L.-N. He, R.-X. Zhuo, R.-Y. Chen, J. Zhou, Synth. Commun., 1997, 27<br />
(16), 2853.<br />
R 2
P-62<br />
PHOSPHOROUS ACID NUCLEOPHILIC ADDITION AT CARBONYL GROUPS<br />
Li-Ping Zhang a,b , LingBo Qu a , Yu-Fen Zhao *a,c,d<br />
a Key Laboratory of Chem-biology and Organic, Zhengzhou University, Henan Province, 450052, P. R. China;<br />
b Department of Chemistry, Anyang Normal University, Anyang 455002, P. R. China;<br />
c Key Laboratory of Bioorganic Phosphorus Chemistry of the Education Ministry, Department of Chemistry, School of<br />
Life Sciences and Engineering, Tsinghua University, Beijing 100084, P. R. China;<br />
d The Key Laboratory for Chemical Biology of Fujian Province, Department of Chemistry, College of Chemistry and<br />
Chemical Engineering, Xiamen University, Xiamen 361005, P. R. China<br />
In recent years a renewed interest in the synthesis of organophosphorus compounds has appeared.<br />
This has been the result principally of the development of new applications of materials bearing a<br />
carbon-phosphorus linkage for a variety of industrial uses. Initial investigations of the addition of<br />
trivalent phosphorus to carbonyl compounds were performed with the use of either trialkyl or<br />
dialkyl phosphites, yielding the corresponding phosphonate esters. Free acid was obtained by<br />
hydrolysis with dil. HCl. This paper represents a particularly convenient method for generating<br />
organophosphonic acid compounds. Series of α-hydroxylalkylphosphonic acid, unsaturated<br />
phosphonic acid, conjugated phosphono carboxylic acid, substituted<br />
1-hydroxyl-methane-1,1-diphosphonic acid were synthesized by reacting phosphorous acid (H3PO3)<br />
directly with aldehydes, ketones, carbonyl ester and carbonyl chloride.<br />
Reference<br />
[1] Abramov, V. S.; Dmitrieva, R. V.; Kapustina, A. S. Reaction of dialkyl phosphorous acids with aldehydes and<br />
ketones. IV. Butyl and allyl esters of -hydroxyalkylphosphonic acids. Zhurnal Obshchei Khimii (1953), 23 257-62.<br />
[2] Sekine, Mitsuo; Yamamoto, Isamu; Hashizume, Akio; Hata, Tsujiaki. Silyl phosphites.V. The reactions of<br />
tris(trimethylsilyl) phosphite with carbonyl compounds. Chemistry Letters (1977), (5), 485-8.<br />
[3] Pudovik, A. N. New method of synthesis of esters of phosphonocarboxylic acids and their derivatives. Doklady<br />
Akademii Nauk SSSR (1952), 85 349-52.<br />
[4] Blazis, Vincent J.; Koeller, Kevin J.; Spilling, Christopher D. Asymmetric synthesis of -hydroxy-phosphonamides,<br />
phosphonates and phosphonic acids. Tetrahedron: Asymmetry (1994), 5(4), 499-502.<br />
[5] Ginsburg, V. A.; Yakubovich, A. Ya. Reaction of aldehydes with trialkyl phosphites.<br />
Zhurnal Obshchei Khimii (1960), 30 3979-87.<br />
[6] Schuelke, Ulrich. Phosphonylation by tetraphosphorus hexoxide. Phosphorus, Sulfur and Silicon and the Related<br />
Elements (1990), 51-52(1-4), 153-6.<br />
74
P-64<br />
THE SYNTHESIS OF TETRACYCLIC PHOSPHORATE<br />
M.A.Pudovik, L.K.Kibardina, S.A.Terent’eva, O.N.Kataeva, G.A.Chmutova, V.A.Alfonsov<br />
A.E.Arbuzov Institute of Organic and Physical Chemistry, Kazan Scientific Centre of the Russian Academy of Sciences,<br />
Arbuzov Str., 8, 420088 Kazan, Russian Federation. Fax: +7 8432 75 5322; e-mail: pudovik@iopc.knc.ru<br />
A reaction of ethylenechlorophosphite with diimine 1 was investigated. It proceeds in mild<br />
conditions and results in the formation of tetracyclic phosphorate 5. Reaction pathways to this<br />
product are proposed.<br />
CH<br />
NCH2CH2N CH<br />
OH OH<br />
1<br />
CH<br />
NCH2CH2N CH<br />
O H<br />
P<br />
O<br />
CH<br />
O O<br />
N<br />
3<br />
CH 2CH 2<br />
NH<br />
CH<br />
O O<br />
P<br />
O O<br />
+<br />
O<br />
O<br />
PCl<br />
75<br />
CH<br />
CH<br />
NCH2CH2N CH<br />
O<br />
OH PO<br />
O<br />
2<br />
NCH3CH2NH<br />
CH<br />
O O<br />
P<br />
O O<br />
5<br />
We suppose, the phosphorylation of the compound 1 takes place on the first stage of the reaction<br />
with the formation of phosphite 2. The phosphite 2 then turns into P-H-spyrophosphorane 3, which<br />
rearranges by intramolecular addition of the P–H bond to the C=N double bond to furnish the<br />
tricyclic phosphorane 4. On the last stage the formation of intramolecular N→P bond takes place to<br />
form final product – the phosphorate 5.<br />
The stability of all participants of the reaction is evaluated by the means of the functional density<br />
theory (Priroda/PBE/3z3 and B3LYP/6-31G (d, p) with complete optimization of the geometry; the<br />
thermodynamic utility of 3→5 transformation is revealed. The calculated geometrical<br />
characteristics of the structure 5 are in agreement with the X-Ray data.<br />
This study was supported by the Russian Foundation for Basic Research (grant no. 06-03-32085).<br />
4
P-65<br />
ABNORMAL REACTIVITY OF ARYLAMINOMETHYLENEBISPHOSPHONATES.<br />
AMINOMETHYLATION ON BENZENE RING IN BASE MEDIUM<br />
M.O.Lozinsky, A.L.Chuiko<br />
Institute of Organic Chemistry of the Nathional Аcademy of Sciences of Ukraine<br />
Murmanskaya str. 5, Kyiv 02094, Ukraine Chuikoal@yahoo.com<br />
We have found, that aminogroups of (arylamino)methylenebisphosphonic acids are unexpectedly<br />
weak as bases.<br />
R<br />
O<br />
PCl3 /H2O R<br />
N<br />
H<br />
H<br />
76<br />
N<br />
H<br />
PO 3 H 2<br />
R = p-Me-, p-H2N-, p-HO-, p-Cl-, m-O2N-.<br />
PO 3 H 2<br />
5 new acids were synthesised according to the recently published method [1]. Only one of them<br />
(R = p-Me-) seems to form internal salt. This compound is well crystallisible from water. Other<br />
synthesised (arylamino)methylenebisphosphonic acids don't form internal salts. They were isolaled<br />
as salts with corresponding anilynes, and did not form free acids at treatment with HCl. Thus,<br />
[(4-aminophenyl)amino]methylenebisphosphonic acid was isolated as a salt with 1/2 molecule of<br />
p-phenylenediamine, and this salt does not lose significant amount of the phenylenediamine at<br />
recrystallisation from 5% HCl:<br />
H N<br />
H N<br />
2<br />
2<br />
PO3H2 • 2<br />
NH N PO H<br />
2<br />
3 2<br />
H<br />
We suppose, that this weakness of the aminogroups is the result of conjugation with benzene ring,<br />
which is stronger than is usual for anilynes. It is confirmed by high reactivity of the benzene ring at<br />
electrofilic attack. Thus, we have realized aminomethylation of [(4-methylphenyl)amino]methylenebisphosphonic<br />
acid in water in the presence of amine excess:<br />
H C 3<br />
N<br />
H<br />
PO H 3 2<br />
PO H 3 2<br />
O O<br />
NH;<br />
CH2 O<br />
H C 3<br />
N N<br />
H<br />
PO H 3 2<br />
PO H 3 2<br />
? O NH<br />
We have not found in literature a reaction example of aminomethylation on benzene ring in basic media.<br />
Reference<br />
[1] Mingshu Wu, Ruyu Chen, You Huang. Synth. Comm. №8. 2004. p.1393-98.
P-69<br />
THE PREPARATION OF NITROGEN-CONTAINING<br />
HETEROARYOYLPHOSPHONATES<br />
AND THEIR REACTIONS WITH TRIALKYL PHOSPHITES<br />
D. Vaughan Griffiths, Michael C. Salt and Helen V. Taylor<br />
School of Biological and Chemical Sciences, Queen Mary, University of London,<br />
Mile End Road, London, E1 4NS, UK<br />
As part of our wider studies of aroyl- and heteroaroyl-phosphonates we have been investigating<br />
α-ketophosphonates based on the pyrrole and pyridine ring systems. These systems have proved to be<br />
much more difficult to prepare than the furan- and thiophene-based systems we have also been<br />
studying. Nevertheless, we have now successfully prepared pyrrol-2-ylcarbonylphosphonates such 1<br />
(R=Me and Ph) and have investigated their reactions with trimethyl phosphite. This results in<br />
deoxygenation of the carbonyl group to give the corresponding carbene intermediates 2 which are<br />
then trapped by the trimethyl phosphite present in the reaction mixture to give the ylidic<br />
phosphonates 3. We have so far seen no evidence of carbene insertion into the substituent R.<br />
4<br />
O<br />
P(OMe) 2<br />
77<br />
O<br />
O<br />
N<br />
O<br />
P(OMe) 2<br />
N<br />
C<br />
N<br />
C<br />
R<br />
O<br />
R<br />
P(OMe) 2<br />
N<br />
C<br />
1 2 R<br />
P(OMe) 3<br />
3<br />
In contrast, the pyridin-3-ylcarbonylphosphonate system 4 (R=H) reacts with further phosphite<br />
leading to the formation of 5. However, this mode of attack is suppressed if a substituent is placed at<br />
the 2-position on the ring. For example, the reaction of the 2-phenoxy-substituted system 4 (R=OPh)<br />
results in deoxygenation of the carbonyl group resulting in carbene formation and the formation of<br />
the insertion product 6.<br />
O<br />
C<br />
O<br />
P(OMe) 2<br />
MeO<br />
O O<br />
OMe<br />
OMe<br />
P<br />
O O<br />
O<br />
(MeO) 2P<br />
N R<br />
(MeO) 2P<br />
P(OMe) 2<br />
3-Pyr 3-Pyr<br />
N O<br />
N<br />
O<br />
C<br />
O<br />
P(OMe) 2<br />
N<br />
O<br />
C<br />
5 6<br />
P(OMe) 2<br />
O P(O)(OMe) 2<br />
C P(O)(OMe) 2<br />
7<br />
8 N 9<br />
For the unsubstituted 2- and 4-pyridinylcarbonyl chlorides the reaction with trimethyl phosphite<br />
proceeds beyond the initial formation of the -ketophosphonates 7 and 8 to give the corresponding<br />
diphosphorus compounds 9. The impact of having substituents ortho to the ketophosphonate group in<br />
these systems is currently being assessed.<br />
O<br />
C
P-71<br />
REACTION OF RACEMIC AND NON-RACEMIC SILYLATED<br />
(1-PHENYL)ETHYLAMINE WITH<br />
O-PHENYLCHLOROMETHYLISOTHIOCYANATOTHIOPHOSPHONATE. SYNTHESIS<br />
OF OPTICALLY ACTIVE 1,3,4-THIAZAPHOSPHOLE<br />
Ludmila K. Kibardina, Mikhail A. Pudovik, ∗ Natalia A. Khailova, Vladimir A. Alfonsov, Olga N. Kataeva<br />
A.E.Arbuzov Institute of Organic and Physical Chemistry, Kazan Scientific Centre of the Russian Academy of<br />
Sciences, Arbuzov Str., 8, 420088 Kazan, Russian Federation. Fax: +7 8432 75 5322;<br />
e-mail: pudovik@iopc.knc.ru<br />
Optically active R-(+)-N-trimethylsilyl(1-phenyl)ethylamine 2a was synthesized by interaction of<br />
R-(+)-(1-phenyl)ethylamine with trimethylchlorosilane in the presence of a base.<br />
R-(+ )-PhCHNH 2<br />
Me<br />
+ Me 3SiCl<br />
-Et3N . HCl<br />
78<br />
Et 3N<br />
R-(+ )-PhCHNHSiMe 3<br />
Me<br />
2a<br />
The reaction of isothiocyanate 1 with silylamine 2a proceeds easily in an ether at room<br />
temperature and results in a mixture of 4a and 4b with chemical shifts δР 120.05 and 19.77 ppm. in<br />
29 : 71 % ratio correspondingly. Diastereomer 4b crystallized from a reaction mixture after 24 h<br />
and it’s angle of the specific rotation was [α]D 20 +240.5 (c=3.87).<br />
S<br />
PhO<br />
PNCS +<br />
ClCH 2<br />
1<br />
S<br />
PhO<br />
P<br />
N<br />
C<br />
S<br />
2a<br />
4a RcRp<br />
Me<br />
R-(+)-PhCHNHSiMe 3<br />
Me<br />
NH C<br />
Ph<br />
H<br />
+<br />
S<br />
PhO<br />
P<br />
N<br />
S<br />
S<br />
PhO P N C NH C<br />
Ph<br />
ClCH2 SiMe 3 H<br />
C<br />
S<br />
4b RcSp<br />
3a RcRp<br />
NH<br />
S<br />
+<br />
P N C NH C<br />
ClCH2<br />
Ph<br />
PhO SiMe 3 H<br />
S<br />
3b RcSp<br />
Me<br />
C<br />
Ph<br />
H<br />
Me<br />
Me<br />
-Me 3SiCl<br />
X-ray structure data reveal that the configuration of carbon and phosphorus atoms in these<br />
compounds is the opposite. If the configuration of chiral carbon atom in isomer 4b is R and is<br />
determined by the configuration of amine used, then the absolute configuration of the phosphorus<br />
atom is S. That is the preferred covalent bonding with the enantiomer possessing the opposite<br />
configuration of the chiral center takes place in the course of the reaction of chiral isothiocyanate 1<br />
with amine 2a. It must be due to the influence of steric factors on the first stage of the reaction –<br />
addition of silylamine to isothiocyanate with the formation of appropriate thiourea. We failed to fix<br />
it spectral and that indicates the fast second stage - cyclization. And at this stage there is no changes<br />
in the configuration of chiral centers and thus it does not render an influence on stereochemical<br />
result of the process.<br />
This study was supported by the Russian Foundation for Basic Research (grant no. 06-03-32085).
P-73<br />
STUDY OF REACTION OF ACETYLENIC PHOSPHONATES<br />
WITH CARBANIONIC NUCLEOPHILES<br />
N.G. Didkovskii, A.I Petryanina, A.V. Dogadina, N.I. Svintsitskaya and B.I. Ionin<br />
St. Petersburg State Technological Institute26 Moskovskii pr., St. Petersburg 190013, Russia.<br />
E-mail: bi@thesa.ru<br />
Reactions of chloroacetylenephosphonates and acetylenediphosphonates with carbanionic<br />
nucleophiles formed in situ by interaction of a series of CH-acids with potassium carbonate are<br />
studied. As the initial CH-acids are taken: malonic dinitrile and esters, cyanoacetic ester,<br />
acetylacetone, dimedone, etc. Reactions performed are shown convenient for creation new C–C<br />
bonds in organophosphorus compounds and are prospective for various syntheses.<br />
O O<br />
P Cl RCCH2CR' O<br />
P =<br />
P(OCH3) 2 ; R R ' = = CH3 , Ph<br />
It is shown that the first step in the<br />
reactions of the carbanionic nucleophiles<br />
with chloroacetylenephosphonatesis is<br />
substitution of chlorine with formation of<br />
functionalized phosphonates. With<br />
acetylacetone reaction affords K-derivative<br />
of acetylacetone phosphonoacetylene<br />
derivative. With dimedone, neutral product<br />
of substitution is formed exerting prototropic<br />
isomerization into allenic isomer. Monitoring<br />
the same reaction with malonic dinitrile by<br />
means of NMR spectroscopy showed<br />
intermediate formation of both acetylenic and<br />
allenic compounds followed by addition of<br />
second molecule of the nucleophile with<br />
formation of phosphonate tetranitrile<br />
as a K-derivative.<br />
79<br />
K CO<br />
2 3<br />
P<br />
O<br />
KH<br />
OH2<br />
Tetramethyl acetylenediphosphonate + malonic<br />
dinitrile + K2CO3: x-ray crystallography<br />
Reaction with malonic esters affords a mixture of acetylenic and allenic compounds.<br />
Reaction of the nucleophiles with acetylenediphosphonates proceeds as addition at the triple bond,<br />
but in contrast to the similar reaction with acetylenedicarboxylates, this addition results in formation<br />
of stable enough K-derivatives, as evidenced by NMR spectroscopy and x-ray<br />
crystallography. Acidification by trifluoroacetic acid gives neutral compounds which enter<br />
prototropic isomerization.<br />
Reference<br />
1. N. G. Didkovskii, A. I. Petryanina, A. V. Dogadina, and B. I. Ionin, Rus. J. Gen. Chem., 2006, Vol. 76, No.9, p. 1512,<br />
1516.<br />
2. A.M. Shekhadeh, N. G. Didkovskii, A. V. Dogadina, and B. I. Ionin, Rus. J. Gen. Chem., 2005, Vol. 75, No.1, p. 9.
P-75<br />
THE PHOSPHO-ALDOL REACTION AND COMPLEXES OF ALUMINIUM<br />
CONTAINING SALCYAN AND RELATED LIGANDS<br />
Nichola E. Cosgrove and Terence P. Kee<br />
School of Chemistry, University of Leeds, Woodhouse Lane, Leeds, LS2 9JT, UK<br />
The phospho group is one of the most important biochemical functions, controlling many<br />
biological processes such as cell membrane synthesis, signal transduction, energy conversion and<br />
skeletal construction. The transfer of a phospho group known as phosphorylation, results in the<br />
formation of a [P-O] linkage. A variation on this concept is hydrophosphonylation, where a<br />
phosphorus-carbon bond is formed. One of the most versatile of the phosphorus-carbon reactions<br />
is the phospho-aldol reaction (PA; Scheme below).<br />
O<br />
R P<br />
O H<br />
O<br />
R<br />
CAT CAT<br />
H<br />
O<br />
X<br />
R P<br />
O H<br />
O<br />
R<br />
R' H<br />
R = alkyl, aryl etc. CAT = Catalyst; X = O<br />
R<br />
NH HN<br />
XH n H nX<br />
Salcyan<br />
80<br />
O<br />
R P<br />
O<br />
O<br />
R R'<br />
X = O, n = 1; X = N, n = 2. R = H, Me, t Bu, Ph<br />
X<br />
H +<br />
R<br />
O<br />
P<br />
O<br />
O<br />
R R'<br />
XH<br />
The phosphonate group is very similar to those present in biological phosphates, allowing it the<br />
ability to mimic their roles. In order to be successful in these applications, control over asymmetry<br />
is vital as this could have severe repercussions upon the properties and effects it has on the body.<br />
In this contribution, we outline some of the results of our molecular and electronic<br />
(semi-empirical) modelling at the PM3 level using the Hyperchem 7.0 package (Hypercube, Florida)<br />
combined with synthetic work on new types of ligand based on the salcyan framework.<br />
Applications in PA catalysis are discussed.<br />
R
P-78<br />
SYNTHESIS OF 2-SUBSTITUED-PYRANO[2,3-D]PYRIMIDIN- 4(3H)-ONE<br />
DERIVATIVES USING IMINOPHOSPHORANE<br />
Qing-Yun Ren, Hong-Wu He*<br />
Key Laboratory of Pesticide &Chemical Biology, Ministry of Education, College of Chemistry, Central China Normal<br />
University, Wuhan, 430079, P. R. China<br />
The derivatives of pyranopyrimidines have been the focus of great interest over many years. This<br />
1, 2<br />
is probably due to the fact that pyranopyrimidine system shows remarkable biological properties.<br />
Here we reported the synthesis of 2-substituted-5-aryl-3,8-diphenyl- 6-methyl-5,8-dihydro-5H<br />
-pyrazolo[4’,3’:5,6]pyrano[2,3-d] pyrimidin-4(3H)-ones 6. The pyrazolo[3,4- b]pyrimidine 3, easily<br />
obtained from pyrazolone 1, ethyl α-cyanocinnamates 2 using TEBA as catalyst, was converted to<br />
iminophosphorane 4 via reaction with triphenylphosphine, hexachloroethane and Et3N.<br />
Iminophosphorane 4 reacted with phenyl isocyanate to give carbodiimides 5, which were allowed to<br />
react with nucleophiles such as amines, alcohols and phenols to produce target<br />
compounds.Structure of compounds 6 were identified by 1 H, IR spectral data, elementary analysis,<br />
and x-ray analysis.<br />
H3C Ar CN<br />
H3C Ar<br />
N<br />
N<br />
Ph<br />
1<br />
O<br />
+<br />
H<br />
2<br />
COOEt<br />
H2O N<br />
N<br />
Ph<br />
O<br />
3<br />
PhNCO<br />
H3C<br />
Ar<br />
N N<br />
Ph<br />
5<br />
O<br />
COOEt<br />
N<br />
C NPh<br />
81<br />
HY<br />
Base<br />
H 3C<br />
Y=NHR 1 , NR 2 2, OR 3 etc<br />
SCHEME 1<br />
COOEt<br />
NH2<br />
Ph3P<br />
Ar<br />
N N<br />
Ph<br />
6<br />
H3C<br />
O<br />
N O<br />
N<br />
Ph<br />
4<br />
O<br />
Ph<br />
N<br />
N<br />
Ar<br />
Y<br />
COOEt<br />
N PPh3<br />
Acknowledgements<br />
We gratefully acknowledge financial support of this work by National Key Basic Research<br />
Development Program of China (No: 2003CB114406) and National Natural Science Foundation of<br />
China ( No: 20372023).<br />
References<br />
[1] S. C. Kuo, L. J. Huang, and H. Nakamura, J. Med. Chem. 27, 539 (1984).<br />
[2] R. Wriggleworth, W. D. Inglis, D. B. Livingstone, C. J. Snekling, and H. C. S. Wood, J. Chem. Soc Perkin Trans. 1.<br />
959 (1984).
P-81<br />
SYNTHESIS OF SOLANESYL PHOSPHONATE<br />
Qu Lingbo 1 Shi Xiaona 2 Chen Xiaolan 2*<br />
1 Anyang Normal University, Henan Province, Anyang, 455002, P. R. China<br />
2 Department of Chemistry, Zhengzhou University, Zhengzhou, 450052, P. R. China<br />
Solanesol, a long-chain terpenoid alcohol mainly existing in tobacco leaves, is the starting<br />
material for many high-value biochemicals, including Vitamin K analogues and co-enzyme Q10<br />
which is useful in the treatment of heart diseases, cancers and ulcers. Solanesol itself can be used as<br />
cardiac stimulant, lipid antioxidant and antibiotics, and clinical trials are also developing the use of<br />
solanesol as an anti-cancer drug [1] . Phosphonates have important applications in flame retardancy,<br />
organic synthesis, and biological applications [2] . In the work described in this paper, three solanesyl<br />
phosphonates were synthesized using standard Arbuzov [3] action, and their structures were<br />
determined by ESI-MS, NMR and IR.<br />
solanesol<br />
7<br />
OH<br />
PBr3<br />
P(OR)3<br />
O<br />
P OR<br />
OR<br />
7<br />
a R= -CH3 b R= -CH2CH3 c R= -CH(CH3)2<br />
Scheme 1. Synthesis of solanesyl phosphonates<br />
References<br />
[1] M. Wang, Integr. Util. Chines. Resour. 2003, 2, 16.<br />
[2] Q. Yao, S. Levchik. Tetra. Lett. 2006,47:277-281.<br />
[3] Bhattachary, A.K, Thyarajan. G. Chem. Rev. 1981,81,415.<br />
82<br />
7<br />
Br
P-86<br />
SYNTHESYS AND STRUCTURAL PECULIARITIES OF PHOSPHORUS<br />
PENTACHLORIDE COMPLEXES WITH 4-DIMETHYLAMINOPYRIDINE AND<br />
N-METHYLIMIDAZOLE<br />
S.E.Pipko, L.V.Bezgubenko, A.D.Sinitsa, E.G.Kapustin, E.B.Rusanov, M.I.Povolotskii<br />
Institute of Organic Chemistry, National Academy of Sciences of Ukraine, Murmanska 5, 02094, Kyiv-94, Ukraine<br />
Coordination chemistry of non-metals still remains a little-studied field. In particular, literature<br />
data on phosphorus complexes are rather controversial. We have recently studied the interaction of<br />
phosphorus pentachloride with 4-dimethylaminopyridine (DMAP) and N-methylimidazole (NMI)<br />
as some of the most effective N-donor ligands. The complexes [PCl4(DMAP)2] + Cl - (δ 31 Р -196 ppm.)<br />
(1a) and [PCl4(NMI)2] + Cl - (δ 31 Р -231 ppm.) (1b) were isolated and investigated. Both complexes<br />
react with H2O, EtOH or Et2NH very slowly. The relative hydrolytical stability of complexes<br />
PCl4L2 + Cl - makes them useful condensing agents. We have found that they are highly effective in<br />
the amide synthesis from carbonic acids and amines.<br />
N<br />
2<br />
N<br />
N<br />
Cl Cl<br />
N P N<br />
Cl Cl<br />
N<br />
1a<br />
Fig.1Fig.1<br />
PCl 5<br />
83<br />
+ Cl-<br />
N<br />
2<br />
N<br />
N<br />
N<br />
Cl<br />
P<br />
Cl<br />
Cl N<br />
Cl<br />
Fig. 1<br />
Molecular and crystal structure of 1b was determined by X-ray single crystal diffraction. It was<br />
found that the molecule of 1b has cis-orientation of NMI substituents (Fig.1) instead of the less<br />
sterically hindered trans-orientation. In the cationic part of the complex the phosphorus atom has<br />
four P-Cl bonds within the range 2.109-2.148Å, two P-N bonds (1.811 and 1.832 Å) and exhibits<br />
slightly distorted octahedral coordination with the angles at phosphorus atom in the range of<br />
87.57-91.50º. Two N-methylimidazole ligands are planar with the dihedral angle between them of<br />
59.6 o . The number of the short CH•••Cl contacts of the hydrogen atoms of N-methylimidazole with<br />
chlorine anion within the range of 2.65-2.85 Å have been found in the solid state. Six of the seven<br />
H•••Cl contacts have ‘chelate’-like nature that can strongly stabilize crystal topology of cis-isomer.<br />
This hypothesis was studied by DFT (B3LYP) calculations of cis- and trans-forms of 1a and 1b.<br />
For both cations trans-form is more preferable (ca. 6.4-6.45 kcal/mol). At the same time<br />
calculations of both cations with the Cl - anion show specific interactions between the anion and the<br />
hydrogens of heterocyclic moiety making the cis-form more stable (ca.15.8 –15.9 kcal/mol).<br />
1b<br />
N<br />
+<br />
Cl -
P-87<br />
CHEMISTRY OF FULVENE-TYPE P-HETEROCYCLIC COMPOUNDS<br />
Shigekazu Ito, Hideaki Miyake, Satoshi Sekiguchi, Matthias Freytag, Masaaki Yoshifuji †<br />
Department of Chemistry, Graduate School of Science, Tohoku University, Aoba, Sendai 980-8578, Japan<br />
1,3,6-Triphosphafulvene 1 was isolated as a formal trimer of a phosphanylidene carbenoid<br />
[Mes*P=CBr–Li: Mes* = 2,4,6-t-Bu3C6H2] and showed similar electrophilic reactivity to fulvene<br />
[1]. Indeed, alkyllithium nucleophiles react at the exo P atom of 1 to afford the corresponding<br />
cyclic anions 2. Alkylation of 2 with an alkyl halide showed regioselective P-alkylation to give<br />
1H-[1,3]diphospholes 3 [2]. On the other hand, protonation of 2 unexpectedly afforded P-H<br />
phosphorus ylides 4 [3]. The X-ray structure of 5 suggests unusual stability in air and moisture at<br />
room temperatures. Additionally, we succeeded in isolation and structure elucidation of tricyclic<br />
compound 6 as an isomer of 1 [4].<br />
Mes*<br />
P<br />
P<br />
1<br />
Mes*<br />
P<br />
Mes*<br />
Mes*<br />
R<br />
P<br />
P<br />
Mes*<br />
P<br />
Mes*<br />
Mes*<br />
2<br />
Mes* = 2,4,6-t-Bu3C6H2 R<br />
P<br />
P<br />
3<br />
Mes*<br />
P<br />
R'<br />
Mes*<br />
84<br />
R Mes*<br />
P<br />
H<br />
Mes*<br />
P<br />
P<br />
Mes*<br />
4: R = alkyl<br />
5: R = F<br />
Mes*<br />
t-Bu P<br />
P<br />
1,4-Diphosphafulvene 7 was obtained as a formal [3+2] cyclodimer of phosphaallene and its redox<br />
property was studied by its cyclic voltammetry. Compound 7 with electron-donating character<br />
formed a CT complex with TCNQ (7,7,8,8-tetracyanoquinodimethane) [5]. Chalcogenization of 2<br />
afforded the monochalcogenized products 8 (E = O, S),<br />
Ph<br />
Ph<br />
suggesting regioselective chalcogenization at the<br />
sterically less-hindered phosphorus atom as well as E/Z<br />
Mes*<br />
P P<br />
Mes* Mes*<br />
P<br />
E<br />
P<br />
Mes*<br />
isomerization around the exo C=C bond [6].<br />
Ph<br />
7<br />
Ph<br />
8<br />
Mes*<br />
† Present address: Department of Chemistry, the University of Alabama, Tuscaloosa 35487-0336, USA.<br />
Reference<br />
[1] S. Ito, H. Sugiyama, M. Yoshifuji, Angew. Chem. Int. Ed. 2000, 39, 2781.<br />
[2] S. Ito, H. Miyake, H. Sugiyama, M. Yoshifuji, Tetrahedron Lett. 2004, 45, 7019.<br />
[3] S. Ito, H. Miyake, M. Yoshifuji, T. Höltzl, T. Veszprémi, Chem. Eur. J. 2005, 11, 5960.<br />
[4] S. Ito, H. Miyake, H. Sugiyama, M. Yoshifuji, Heterocycles 2004, 63, 2591.<br />
[5] S. Ito, S. Sekiguchi, M. Yoshifuji, J. Org. Chem. 2004, 69, 4181.<br />
[6] S. Ito, M. Freytag, S. Sekiguchi, M. Yoshifuji, Sci. Rep. Tohoku Univ. 1st Ser. 2004, 81, 17.<br />
P<br />
6<br />
E = O, S<br />
t-Bu<br />
t-Bu
P-89<br />
SYNTHESIS AND COMPLEXATIONS OF A NOVEL STABLE CARBENE BEARING A<br />
PHOSPHORUS YLIDE<br />
Shin-ya Nakafuji, Junji Kobayashi, and Takayuki Kawashima<br />
Department of Chemistry, Graduate School of Science, The University of Tokyo<br />
7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan<br />
Since the first report by Arduengo in 1991, N-heterocyclic carbenes (NHCs) have been<br />
extensively studied. Due to their successful application as ligands for transition metal catalysts, the<br />
tuning of electronic and structural properties of NHCs has become an important subject. One of the<br />
modification of NHCs is changing amino groups adjacent to the carbene center to other -donating<br />
substituents. Thus, we focus our attention on carbene 1, which has a phosphorus ylide moiety.<br />
Because -donation of the ylide carbanion to the carbene center is almost same as an amino group<br />
and electronegativity of carbon is smaller than that of nitrogen, 1 is expected to exhibit a strong<br />
-electron donating ability to transition metals. Although several transition metal (Pt, Cr, Mo, W)<br />
complexes of carbene 1 (R = H) were reported 1) , they were synthesized from the corresponding<br />
isocyanide complexes, and available metals were also limited. In this report, we will present<br />
exploitation of general synthetic method of carbene 1 (R = CH3) and its complexation.<br />
Reaction of phosphonium salt 2 with mesityllithium gave a mixture of 2, carbene 1 ( P 10), and<br />
diphenylphosphine 3. Diphenylphosphine 3 seems to be formed by 1,3-phenyl shift of carbene 1<br />
during treatment of the reaction mixture. At lower temperature, however, carbene 1 was able to be<br />
trapped by elemental sulfur to give 4 quantitatively.<br />
To evaluate the ligand property of carbene 1, rhodium complexes 5 and 6 were prepared. Both 5<br />
and 6 didn’t show any decomposition in the course of work up with water. In the infrared spectrum,<br />
carbonyl stretching frequencies of 6 were observed at the lowest wave numbers among analogous<br />
carbene rhodium complexes, indicating that carbene 1 has a strong -donating ability.<br />
PPh 3<br />
N<br />
R<br />
1<br />
Ph 3P<br />
N<br />
CH3 2<br />
Ph 4B<br />
PPh 2<br />
Ph<br />
N<br />
CH3 3<br />
85<br />
PPh 3<br />
S<br />
N<br />
CH3 4<br />
PPh 3<br />
M<br />
N<br />
CH3 5 (M = Rh(cod)Cl)<br />
6 (M = Rh(CO) 2Cl)<br />
Reference<br />
1) Michelin, R. A.; Pombeiro, A. J. L.; Guedes da Silva, M. F. C. Coord. Chem. Rev. 2001, 218, 75.
P-91<br />
AN EFFICIENT SYNTHESIS OF α-(SUBSTITUTED PHENOXY ACETOXY)ALKYL<br />
PHOSPHINATES SODIUM SALTS<br />
Tao Wang 2 , Hong Wu He 1*<br />
1.Institute of Pesticide Chemistry, Central China Normal University, Wuhan, 430079 P.R.China<br />
2. College of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang, 330022, P.R.China<br />
One approach to design a inhibitor of Pyruvate dehydrogenase(PDH) with a novel structure by<br />
using biochemical reasoning was attempted. A series of α-(substituted phenoxyacetoxy) alkyl<br />
phosphinic acid methyl ester I and its corresponding phosphinate salts II were synthesized as<br />
potential inhibitor of PDH. The title compounds can be prepared from α-( substituted phenoxy<br />
acetoxy) alkyl phosphinic acid methyl esters I which were synthesized by the condensation of<br />
methyl α -hydroxyalkyl phosphinates with substituted phenoxyacetic chloride. This method<br />
provide a simple and efficient procedure for the synthesis of phosphinate derivatives containing<br />
sensitive groups to acid, base or water such as carboxylate ester. The formation of the title<br />
compounds II can be rationalized in terms of direct reaction of the esters I with oven-dried sodium<br />
iodide in the presence of molecular sieve (4A) in dried acetone under nitrogen for 4~6 hours. Some<br />
advantageous features are: (a) the title compounds II can be obtained from I in one-step; (b) the<br />
reactions only need short time under mild condition by a simple procedure. On the basis of this, the<br />
herbicidal activity of title compounds was evaluated in a set of experiment in greenhouse. Most of<br />
title compounds exhibited notable inhibitory activity to the growth of Echinochloa crusgalli (L.)<br />
Beauv.,Digitaria adscendens, Medicago sativa L., Brassica napus and Amaranthus retroflexus.<br />
O<br />
H3C P<br />
H3CO CH OH<br />
R<br />
Na I<br />
CH3COCH3 N2 O<br />
+ Cl CCH2O<br />
O<br />
H3C P<br />
NaO<br />
X<br />
Y<br />
O<br />
CH O CCH2O R<br />
II<br />
(C 2H 5) 3N<br />
DCM<br />
O<br />
H3C P<br />
H3CO X<br />
Y<br />
86<br />
CH O<br />
R<br />
O<br />
CCH2O Acknowledgments<br />
This work was supported by the National Basic Research Program of China (No: 2003CB114400) and the National<br />
Natural Science Foundation of China (No: 20372023).<br />
*Address correspondence to Hong-Wu He, Key Laboratory of Pesticide & Chemical Biology of<br />
Ministry of Education, Central China Normal University, Wuhan 430079, People’s Republic of<br />
China E-mail: hel208@mail.ccnu.edu.cn<br />
I<br />
X<br />
Y
P-93<br />
PHOSPHORYLACETIC ACID THIOAMIDES AS KEY SUBSTANCESFOR<br />
PHOSPHORYLATED HETEROCYCLES<br />
V.A. Kozlov, I. L. Odinets, D.V. Aleksanyan, P.V. Petrovskii, T. A. Mastryukova<br />
A.N. Nesmeyanov Institute of Organoelement compounds RAS, Vavilova str.28, Moscow,119991 Russia.<br />
E-mail: odinets@ineos.ac.ru<br />
Rather often thioamides serve as building blocks to obtain heterocycles of pharmaceutical<br />
importance. Recently we elaborated the facile synthetic route to phosphorus substituted carboxylic<br />
acid thioamides 1 and demonstrated their application in regioselective heterocyclization with<br />
dimethylacetylendicarboxylate leading to phosphorus containing thiazolidin-4-ones as potential<br />
drug-candidates. 2 Here we would like to demonstrate the ability of the above mention substrates to<br />
play a role of annelating reagent in the reaction with quinoxaline derivatives. As azines containing<br />
two and more heteroatoms undergo annelation with thioamides to yield annulated heterocycles<br />
possessing biological activity we investigate the reactivity of phosphorylated thiamides in such<br />
reactions.<br />
It was found out that interacting with 2,3-dichloroquinoxaline starting phosphoruscontaining<br />
substrates served as thionation agents resulting in bis(quinoxalinil)sulfide and<br />
phosphorylacetonitrile instead of the expected thiazolo[4,5-b]quinoxaline.<br />
N Cl<br />
N<br />
Cl<br />
(EtO) 2P(O)CH 2C(S)NH 2/2Et 3N<br />
87<br />
N Cl<br />
N<br />
S<br />
Cl<br />
(EtO) 2P(O)CH 2CN<br />
Despite the interaction with N-methylqunoxalinium iodide proceeded as annelation, it resulted in<br />
3-phosphorylated thiolactames – 3-phosphoryl-tetrahydroquinoxalino[2,3-b] -pyrrolidin-2-thiones<br />
in contrast to the similar reactions of non-phosphorylated thioamides giving thiazole derivatives.<br />
N<br />
N<br />
CH 3<br />
I Et 2NH/EtOH<br />
N<br />
N<br />
CH 3<br />
H<br />
OEt<br />
R 2P(O)CH 2C(S)NH 2<br />
R=OEt, Ph<br />
The structure and NMR features of the compounds obtained will be discussed as well the reasons<br />
of such difference in reactivity of phosphorylated and non-phosphorylated thioamides.<br />
Financial support: Russian Basic Research Foundation (grant 05-03-32692)<br />
References<br />
1. V.A.Kozlov, I.L.Odinets, K.A.Lyssenko, S.G.Churusova, S.V.Yarovenko, P. V. Petrovskii and T. A. Mastryukova. Izv.<br />
AN, Ser. khim., 2004, 4, 887-893 (Russ.Chem.Bull., 2004, 53(4), 925-931)<br />
2. V.A. Kozlov, I. L.Odinets, K. A.Lyssenko, S. G.Churusova, S. V.Yarovenko, P.V.Petrovskii, T.A.Mastryukova,<br />
Heteroatom Chem., 2005, 2, 159-168<br />
+<br />
N<br />
N<br />
N<br />
N<br />
CH3<br />
N<br />
S<br />
PR 2<br />
O
P-94<br />
THE FORMATION OF ION-RADICAL SALTS IN THE REACTION OF FULLERENE<br />
C60 WITH PHOSPHORUS (III) AMIDES<br />
I.P.Romanova, V.F.Mironov, G.G.Yusupova, О.А.Larionova,<br />
V.I.Morozov, O.G.Sinyashin<br />
A.E.Arbuzov Institute of Organic and Physical Chemistry, Kazan Research Centre of Russian Academy of<br />
Sciences, Arbuzov Str. 8, Kazan, Russia 420088, E-mail: romanova@iopc.kcn.<br />
Since the discovery of fullerene С60 it has been intensively studied as electron-withdrawing<br />
component of donor-acceptor dyads using for the creation of the molecular devices. It is known that<br />
such phosphorus donors as white phosphorus (P4) and phosphine oxides 1,2 form the molecular<br />
complex with С60. The phosphines are easily oxidized in presence of С60. The phosphine complexes<br />
with BH3 add to the fullerene moiety with the formation of the fullerene C60 acyclic derivatives 3 .<br />
Here the results of the fullerene interactions study with strong nucleophiles such as hexamethyl- and<br />
hexaethyltriaminophosphines 1 and 2 are discussed.<br />
1, 2<br />
C60<br />
5, 6<br />
hν<br />
1O2<br />
O2<br />
3C60<br />
7, 8<br />
R = Me (1, 3, 5, 7), Et (2, 4, 6, 8)<br />
P(NR2)3<br />
O=P(NR2)3<br />
7, 8<br />
1O2<br />
1, 2<br />
C60 P(NR2)3<br />
3, 4<br />
1O2<br />
C60<br />
+<br />
P(NR2)3<br />
+<br />
P(NR2)3<br />
5, 6<br />
88<br />
_<br />
C60<br />
-C60<br />
C60<br />
-C60<br />
+<br />
P(NR2)3<br />
A<br />
+ +<br />
(R2N)3P P(NR2)3<br />
B<br />
A - (1, 2)<br />
C60<br />
+<br />
P(NR2)3<br />
+<br />
P(NR2)3<br />
C<br />
Using the ESR, NMR 31 Р and UV-spectroscopy it was shown that fullerene C60 forms the<br />
ion-radical salts 3 and 4 with phosphites 1 and 2. These salts are unstable. Firstly, they are oxidized<br />
to amidophosphates 7 and 8. Secondly, they undergo the further transformations to the new<br />
ion-radical salts 5 and 6. The triads 5 and 6 are also unstable and gradually convert into diamagnetic<br />
compounds 7, 8 and fullerene oxides. The formation of triads 5, 6 is supposed to involve the<br />
intermediate formation of the strong electrophilic dication В. Financial support from RFBR (grant<br />
no. 05-03-32418) and OCCM Program no.7 is gratefully acknowledged.<br />
References<br />
[1] R.E.Douthwaite, M.L.H.Green, S.J.Heyes, M.J.Rosseinsky, J.F.C.Turner. J. Chem. Soc., Chem. Commun., 1994, 11,<br />
1367.<br />
[2] S.Bhattacharya, S.Banerjee, S.K.Nayak, S.Chattopadhyay, A.K.Mukherjee. Spectrochimica Acta, Part A. 2004, 60,<br />
1099.<br />
[3] S.Yamago, M.Yanagawa, H.Mukai, E.Nakamura. Tetrahedron. 1996, 52, 5091.
P-95<br />
NEW METHOD FOR THE ASYMMETRIC REDUCTION OF KETOPHOSPHONATES<br />
Vitaly V. Nesterov, Oleg I. Kolodiazhnyi<br />
Institute of Bioorganic Chemistry and Petrochemistry, National Academy of Sciences of Ukraine, Murmanskaia 1, Kyiv,<br />
UKRAINE e-mail: oikol123@rambler.ru<br />
The chiral reducing reactants (S)-1 or (R)-1 were prepared from lithium, sodium or<br />
tetrabutylammonium borohydrides and (S)- or (R)-tartaric acids [1,2].<br />
HO<br />
HO<br />
O<br />
O<br />
H B H M+<br />
O<br />
-<br />
HO<br />
HO<br />
O<br />
O<br />
S-1 R-1<br />
89<br />
O<br />
O<br />
H B H M +<br />
O<br />
-<br />
M= Li, Na, Bu4N The reduction of - or -ketophosphonates with (S)- or (R)-1 leads stereoselectively to the<br />
formation of (R)-, or (S)- - or -hydroxyphosphonates, correspondingly, in high yields and very<br />
good stereoselectivity.<br />
The stereoselectivity of reaction depended on the absolute configurations of 1 and<br />
ketophosphonates. The reduction of di(1R,2S,5R)-menthyl ketophosphonates with the (R)-1<br />
proceeded with matched double asymmetric induction to give high enantiomeric excesses of<br />
hydroxyphosphonates (up to >96 % ee). The methodology was used for the preparation of<br />
enantiomericly pure phosphonate modified carnitine and other biologically active phosphonic acids<br />
in multigram scale.<br />
(RO) 2P(O)(CH2 ) n<br />
(R)-3, 4<br />
R'<br />
H<br />
OH<br />
1) (S,S)-1<br />
2) H3O (RO) 2P(O)(CH 2 ) n<br />
2<br />
R'<br />
O<br />
1) (R,R)-1 R'<br />
H<br />
HO<br />
(CH2 ) nP(O)(OR) 2<br />
(S)-3, 4<br />
TA - Tartaric Acid<br />
+ 2) H3O +<br />
, R=Et, Mnt (3), H (4)<br />
Asymmetric reduction of ketophophonates with reagent (S)-1 or (R)-1 (R’O)2P(O)(CH2)nCH(OH)R<br />
R R’ N ТА YIELD, % EE (OR DE),% CONFIG<br />
CH2CL MNT 1 R,R 93 96 S<br />
CH2CL ET 1 R,R 82 80 S<br />
PH ET 0 R,R 95 60 S<br />
PH MNT 0 R,R 95 92.5 S<br />
PH MNT 0 S,S 98 46 R<br />
PH ET 0 S,S 94 60 R<br />
2-FC6H4 MNT 0 R,R 97 82 S<br />
2-AN MNT 0 R,R 96 74 S<br />
PYPERONY<br />
L<br />
MNT 0 R,R 97 96 S<br />
References<br />
1 V. V. Nesterov and O. I. Kolodiazhnyi Tetrahedron: Asymmetry 2006, 17, 1023-1025<br />
2 O. I. Kolodiazhnyi Tetrahedron: Asymmetry 2005, 16, 3295-3340
P-96<br />
DIASTEREOSELECTIVE SYNTHESIS OF ENANTIOPURE CYCLIC α-<br />
AMINOPHOSPHONIC ACIDS<br />
Vladimir A. Alfonsov 1 , Charles E. McKenna 2 , Еvgenia V. Bayandina 1 , Boris Kashemirov 2 ,<br />
Liliya N. Yarmieva 1 , Olga N.Kataeva 1 , Lyudmila N.Punegova 1 .<br />
1 A.E.Arbuzov Institute of Organic and Physical Chemistry, Kazan Scientific Centre of the<br />
Russian Academy of Sciences, 420088, Arbuzov Str., 8, Kazan, Russian Federation. Fax: +78432 75 5322; E-mail:<br />
alfonsov@iopc.knc.ru<br />
2 Department of Chemistry, University of Southern California, Los Angeles, CA 90089 USA<br />
The reaction of dialkylchlorophosphites with β-aldiminoalcohols proceeds by intramolecular<br />
cyclization with formation of 1,4,3-oxazaphosphorine derivatives. Imines containing an asymmetric<br />
center in the parent β-amino alcohols give rise to a new chiral center at position 3 of<br />
oxazaphosphorine ring with very high diastereoselectivity, resulting in a non-equal mixture of the<br />
two diastereomers A and B, which are distinguished only by their phosphorus atom configuration.<br />
Thus, we have found the new and efficient way of synthesis of cyclic aminophosphonic acids by the<br />
reaction of dialkylchlorophosphites with β-aldiminoalcohols.<br />
The well-known obtention of free phosphonic acids from the corresponding dialkyl esters by<br />
silyldealkylation with trimethylbromosilane provides in enantiopure form, the cyclic<br />
aminophosphonic acids as HBr salts.<br />
This work was supported by the Civilian Research and Development Foundation (grant no. RUC2-2638-KA-05) and<br />
the Russian Foundation for Basic Research (grant no. 03-03-33082).<br />
90
P-100<br />
STUDIES ON THE SYNTHESIS AND SEPARATION OF ISOLEUCINE<br />
OLIGOPEPTIDES ASSISTED BY PHOSPHORUS OXYCHLORIDE<br />
Wei-Na CAO 1 ,Li-Na TANG 1 ,Li MA 1 ,Kui LU* 1 ,Yu-Fen ZHAO 2<br />
1.Department of Chemistry and Chemical Engineering, Henan University of Technology, Zhengzhou 450052;<br />
2.Department of Chemistry, Xiamen University, Xiamen 361005, China<br />
The 21st century is a century of life sciences, the substances with bio-activities have gained<br />
significant attraction, including oligopeptides[1]. Obviously, the synthesis and separation of<br />
oligopeptides have become a hotspot of research[2]. In this paper, the reaction of self-assembly into<br />
isoleucine oligopeptides from L-isoleucine with the assistance of phosphorus oxychloride was<br />
studied by using ESI-MS, and the separation methods for isoleucine oligopeptides library were also<br />
researched, the pure Ile-Ile was separated under the optimized conditions by using RP-HPLC. The<br />
results suggested that the suitable condition of direct synthesis was: the molar ratio of L-Ile and<br />
POCl3 of 1 to 1, the temperature 50℃, the solvent dioxane, reaction time 2h, and the Ile-Ile was<br />
characterized by ESI-MS/MS.<br />
Acknowledgements: The authors would like to thank the financial supports from the Chinese<br />
National Science Foundation (No.20272055, 20572016), Henan Province Science Foundation for<br />
Prominent Youth (No.0312000900) and Office of Education of Henan Province (No.<br />
2006KYCX017, 200510459015).<br />
References:<br />
1. Westheimer F.H., Science.1987, 235(4973): 1173~1178.<br />
2. Lu, K.; Liu, Y.; Zhou, N.; Chen, Y.; Feng, Y.-P. ; Guo, X.-F.; Chen, W.; Qu, L.-B.; Zhao, Y.-F. Acta Chim. Sinica<br />
2002, 60, 372 (in Chinese).<br />
91
P-101<br />
SYNTHESIS OF BIS(PHOSPHONATES) PYRROLIDINES DERIVATIVES<br />
Feng Gao, Ting-ting Wang, Ying-jun Song, Wen-hu Wang*<br />
Institute of Elemento-Organic Chemistry, Nankai University, Tianjin, 300071,China<br />
The cycloadditon of azomethine ylides with electronic-deficient olefins provides an efficient<br />
method for synthesizing substituted pyrrolidines contained in many biologically active<br />
compounds. [1] Many works have been done in this field in recent years. However, few results have<br />
been reported about the reaction of azomethine ylides with vinylphosphonates. [2] We present herein<br />
our results on the reaction between in situ generated azomethine ylides 2 and tetraethyl<br />
vinylidenebis(phosphonates) 3.<br />
N-Metallated azomethine ylides 2 were generated by the reaction of arylidene imines 1 with<br />
AgOAc and triethylamine.These azomethine ylides undergo cycloaddition to 3 at room temperature<br />
with good regioselectivity and yields. The main product is compound 4. The structure of the two<br />
cycloadducts were confirmed by 1 H NMR, 31 P NMR and elemental analysis.<br />
Reference<br />
[1] Gribble, G. W. In Comprehensive Heterocyclic Chemistry; Katritzky, A. R., Rees, C. W., Scriven, E. F. V., Eds.;<br />
Pergamon: Oxford, U.K., 1996; Vol. 2, pp 207-257.<br />
[2] Jesùs, C. Ronald, G. etal,. Eur. J. Org. Chem. 2001, 1971-1982.<br />
92
P-104<br />
SYNTHESIS OF NOVEL BICYCLI CAGED PHOSPHATE DERIVATIVES<br />
Wen-Yan MO, Hong-Wu HE*<br />
Key Laboratory of Pesticide & Chemical Biology of Ministry of Education,<br />
Central China Normal University, Wuhan 430079, People’s Republic of China<br />
E-mail: hel208@mail.ccnu.edu.cn<br />
A series of novel bicyclic caged phosphates, containing α-substituted alkyl phosphonates have<br />
been synthesized. The precursors of α-substituted alkyl phosphonates 1 were obtained by<br />
dropping dimethylphosphite to aldehydes soultion in ice bath(0~5℃). Pentaerythritol reacts with<br />
POCl3, leading to preferable formation (87~95%) of 1-hydroxymethyl-4-phospha-3,5,<br />
8-trioxabicyclo[2,2,2]octane 2, which affords the corresponding acid 3 via oxidation using NH4VO3<br />
as catalyst. 3 was easily acylated by α-substituted alkyl phosphonates 1 to give bicyclic caged<br />
phosphates derivatives 4 with moderate or good yields. The structures of all title compounds were<br />
confirmed by IR, 1 H NMR,MS spectra and elemental analysis.<br />
O<br />
H3CO Et3N O<br />
P H + RCHO<br />
H3CO H<br />
H3CO CH2Cl P C R<br />
2 H3CO OH<br />
1<br />
C(CH 2OH) 4<br />
POCl 3<br />
1. SOCl2 2. CH2Cl2, Et3N, 1<br />
O<br />
O<br />
O P<br />
O<br />
2<br />
O<br />
O<br />
O P<br />
O<br />
4<br />
CH 2OH 65% HNO 3<br />
NH 4VO 3<br />
O<br />
C<br />
O H C<br />
R<br />
93<br />
O<br />
OCH3<br />
P<br />
OCH3 O<br />
O<br />
O P<br />
O<br />
3<br />
COOH<br />
R=CH 3, furyl,<br />
(un)substituted phenyl<br />
Acknowledgments<br />
Financial support by National Basic Research Program of China (2003CB114400) and NNSFof China ( 20372023)<br />
References<br />
[1] Verkade, J.G.; Reynold, L., J.Org.Chem. 25,633(1960).<br />
[2] Ozoe, Y.,Mochida, K., Eto, M., Agric. Biol. Chem., 46,2521(1982)<br />
[3] Ratz, R.F.W., US 3168549,1965<br />
[4] Ratz, R.F.W., US 3287448,1966<br />
[5] Scriven, Eric, F. V., Chem.. Soc. Rev., 12,129(1983)<br />
[6] Yu-Gui LI, Jian-Ji WANG, Tao HAN , Acta Chim. Sinica, 46,679(1988).<br />
[7] Yu-Gui LI, Xin-Long WANG, Xue-Feng ZHU, Chin. J. Org. Chem. 15,57(1995)<br />
[8]Yu-Gui LI, Xue-Feng ZHU, Qin WANG., Chem. J. Chin. Univ., 17,1394(1996)
P-106<br />
THE SYNTHESIS AND REACTIONS OF ALKYL<br />
2,3,3-TRIS(DIALKOXYPHOSPHORYL)PROPIONATES AND ALKYL<br />
2,3,3-TRIS(DIALKOXYPHOSPHORYL)ACRYLATES<br />
Yuen-Ki Cheong, Philip Duncanson, D. Vaughan Griffiths and Xiao Han<br />
School of Biological and Chemical Sciences, Queen Mary, University of London<br />
Mile End Road, London, E1 4NS, UK<br />
We have previously reported the preparation of novel ylide bisphosphonates such as 2 from the<br />
reaction of dichloromaleic anhydride 1 with trialkyl phosphite.[1] We have now investigated the use<br />
of these and related system as precursors for the preparation of some novel bis- and<br />
tris-phosphonates.<br />
RO O<br />
P<br />
O<br />
O<br />
(RO) 2P<br />
(RO) 2P O<br />
O<br />
OR<br />
RO O<br />
P<br />
RO<br />
HCl<br />
O<br />
ROH<br />
O<br />
DCM (RO) 2P<br />
(RO) 2P O<br />
2<br />
O<br />
O<br />
O<br />
Cl<br />
(RO) RO<br />
3P<br />
O<br />
Cl<br />
P<br />
O<br />
1<br />
3<br />
4<br />
OR<br />
O O<br />
RO<br />
P<br />
RO<br />
OR<br />
RO<br />
P<br />
RO OR<br />
O O<br />
Conversion of the ylide 2 to the trisphosphonate 4 can be readily achieved either via the anhydride<br />
3 or directly by heating 2 under reflux with the appropriate alcohol. Conversion of this<br />
trisphosphonate 4 to the corresponding acrylate is illustrated below for the case R=Et. Thus,<br />
deprotonation of 4 (R=Et) by the action of a base (such as EtONa or NaH) gave the chelate 5 (R=Et),<br />
which on treatment with bromine in the presnce of excess base underwent bromination and then<br />
elimination to give the acrylate 6 (R=Et).<br />
P<br />
4 (R=Et) 5 (R=Et) 6 (R=Et)<br />
OEt<br />
O O<br />
EtO<br />
P<br />
EtO<br />
OEt<br />
EtO<br />
P<br />
P<br />
EtO OEt<br />
O O<br />
OEt<br />
Na<br />
O O<br />
EtO<br />
EtONa<br />
P<br />
EtO<br />
OEt Br2 EtO<br />
P<br />
P<br />
EtO OEt<br />
O O<br />
OEt<br />
O O<br />
EtO<br />
P<br />
or<br />
EtO<br />
OEt<br />
NaH<br />
EtO<br />
P<br />
EtO OEt<br />
O O<br />
δ P 22.3 (d, J = 7 Hz)<br />
22.4 (dd, J = 57, 7 Hz)<br />
23.0 (d , J = 57 Hz)<br />
δ P 27.3 (d , J = 17 Hz, P-C-P)<br />
36.8 ( t, J = 17 Hz)<br />
94<br />
δ P 5.8 (1 P, dd, J = 83, 37 Hz)<br />
9.1 (1 P, dd, J = 40, 37 Hz)<br />
11.4 (1 P, dd, J = 83, 40 Hz)<br />
The reactions of the trisphosphonates 3, 4, and 6 have been investigated and will be reported. The<br />
reaction of 6 with benzylazides is of particular interest since it eventually results in the loss of one of<br />
the phosphonate groups and the formation of a novel bisphosphonate. The structure of this compound<br />
and its mode of formation will be discussed.<br />
Reference<br />
[1] P. Duncanson and D. V. Griffiths, icpc2004
P-112<br />
REACTIONS BETWEEN N-(THIO)PHOSPHORYL IMINES AND DIETHYLZINC<br />
Xinpeng Ma, Xinyuan Xu, Chungui Wang, Guofeng Zhao*, Zhenghong Zhou*, Chuchi Tang<br />
State Key Laboratory of Elemento-Organic Chemistry, Institute of Elemento-Organic Chemistry, Nankai University,<br />
Tianjin 300071, P. R. China<br />
Asymmetric addition of imine is a convenient and practical method for the preparation of<br />
synthetic valuable nitrogen-containing compounds, such as chiral amines, 1,2-diamines and α- or<br />
β-amino acids. Recently, significant progress has been witnessed in this area. 1 Phosphoryl group<br />
was one of the important N-protecting groups of imine. The asymmetric alkylation of<br />
N-diphenylphosphinoylimines with diethylzinc could be run smoothly in the presence of chiral<br />
copper catalysts or chiral 1,2-aminoalcohols. Since N-diphenylphosphinoylimines were the only one<br />
N-phosphoryl imine used in asymmetric reaction, we plan to extend this substrate to more available<br />
and cheap O,O-diethylphosphorylimine and its thio analogues.<br />
It was interesting that the change of the substituent on phosphorus atom in N-phosphoryl imine<br />
resulted in a total reversion of the direction of this reaction. The corresponding reduction product<br />
rather than the alkylation product was obtained exclusively. Ethylene was released from the reaction<br />
system at the same time. However, the addition of TMEDA, which has proven to be a strong<br />
coordinating ligand to zinc, led to the reversion of the reaction orientation. The normal ethylating<br />
product was obtained as the dominant product.<br />
Acknowledgment<br />
We are grateful to the National Natural Science Foundation of China (No. 20472033) for generous financial support for<br />
our programs.<br />
References<br />
[1] (a) Kobayashi, S.; Ishitani, H. Chem. Rev. 1999, 1069. (b) Vilaivan, T.; Bhanthuranavin, W. Current Org. Chem.<br />
2005, 9, 1315.<br />
95
P-113<br />
AZA-HENRY REACTION BETWEEN N-THIOPHOSPHORYL IMINES<br />
AND NITROMETHANE<br />
Xinpeng Ma, Xinyuan Xu, Chungui Wang, Guofeng Zhao*, Zhenghong Zhou*, Chuchi Tang<br />
State Key Laboratory of Elemento-Organic Chemistry, Institute of Elemento-Organic Chemistry, Nankai University,<br />
Tianjin 300071, P. R. China<br />
The aza-Henry (nitro-Mannich) reaction, the nucleophilic addition of nitroalkanes to imines to<br />
give α-nitroamine derivatives, is one of the most important tools for carbon-carbon bond formation<br />
and has been used for the synthesis of a vast array of 1,2-diamines and α-amino acids, which are<br />
valuable intermediates for the synthesis of many pharmaceutically active compounds. 1 Recently, we<br />
discovered that thermal condensation of acetals and different types of thiophosphoramide could<br />
conveniently afford N-thiophosphoryl imines in excellent yields with high purities. 2<br />
These<br />
N-thiophosphoryl imines are successfully employed as imine substrates in the aza-Henry reaction of<br />
nitromethane.<br />
The corresponding α-nitroamine derivatives 2 were obtained in almost quantitative yields in the<br />
presence of a catalytic amount of N,N,N’,N’-tetramethylguanidine (TMG, 10 mol%) under<br />
solvent-free conditions. The thiophosphoryl group in α-nitroamines 2 could be conveniently<br />
removed through acidic hydrolysis and methanolysis. Moreover, 2 could be readily transformed to<br />
1,2-diamines and α-amino acids via reduction or Nef reaction, respectively. Therefore, this<br />
procedure furnishes a convenient and practical synthetic method for 1,2-diamines and α-amino<br />
acids.<br />
Acknowledgments<br />
We are grateful to the National Natural Science Foundation of China (No. 20472033) for generous financial support for<br />
our programs.<br />
References<br />
[1] Westermann, B. Angew. Chem. Int. Ed. 2003, 42, 151.<br />
[2] Xu, X. Y.; Wang, C. G.; Zhou, Z. H.; Zeng, Z. B.; Ma, X. P.; Zhao, G. F.; Tang, C. C. Lett. Org. Chem. 2006, 3,<br />
640.<br />
96
P-114<br />
ORGANOCATALYTIC ASYMMETRIC SYNTHESIS OF<br />
α- HYDROXY PHOSPHONATES<br />
Xinyong Li, Weiwei Jin, Caibao Chen and Wen-Jing Xiao*<br />
Key Laboratory of Pesticide and Chemical Biology, Ministry of Education, College of Chemistry, Central China<br />
Normal University, 152 Luoyu Road, Wuhan, Hubei 430079, China<br />
wxiao@mail.ccnu.edu.cn<br />
Quinine and its derivatives have been used as organocatalysts in asymmetric<br />
hydrophosphonylation of aldehydes to synthesis α- hydroxy phosphonates. It was found that the<br />
hydrophosphonylation reaction worked very well in the presence of 10 mol% Quinine. Asymmetric<br />
synthesis α- hydroxy phosphonate also can be carried out using water as the reaction medium.<br />
O<br />
O<br />
10mol%Quinine<br />
EtO P<br />
H R H<br />
EtO<br />
toluene rt<br />
97<br />
R<br />
OH<br />
*<br />
P OEt<br />
OEt<br />
O<br />
References<br />
1) Davies, S. R.; Mitchell. M. C.; Cain, C. P.; Devitt, P. G.; Taylor, R. J.; Kee, T. P. J. Organometallic Chem. 1998,<br />
550, 29.<br />
2) Saito, B.; Katsuki, T. Angew. Chem. Int. Ed. 2005, 44, 4600.<br />
O<br />
HO<br />
N<br />
N
P-115<br />
THE AZA-MORITA-BAYLIS-HILLMAN REACTION OF N-THIOPHOSPHORYL<br />
IMINES CATALYZED BY 1,3,5-TRIAZA-7-PHOSPHAADMANTANE<br />
Xinyuan Xu, Chungui Wang, Zhenghong Zhou*, Chuchi Tang<br />
State Key Laboratory of Elemento-Organic Chemistry, Institute of Elemento-Organic Chemistry, Nankai University,<br />
Tianjin 300071, Peoples’ Republic of China<br />
In the reported aza-MBH reactions, tosyl and acyl are most often used as the imine’s<br />
N-protecting groups, probably because their protected imines have better reactivities. In contrast,<br />
N-phosphinoyl imine has been rarely used due to its troublesome preparation, although phosphinoyl<br />
could be easily deprotected via acidic hydrolysis from the aza-MBH reaction adduct. Up to date,<br />
there is only one report about the aza-MBH reaction of N-phosphinyl imines. 1 Recently, we<br />
discovered that thermal condensation of acetals and different types of thiophosphoramide<br />
conveniently led to the formation of N-thiophosphoryl imines in excellent yields with high<br />
purities.2 Herein, we report the 1,3,5-Triaza-7-phosphaadmantane (PTA)-catalyzed aza-MBH<br />
reaction of N-thiophosphoryl or N-thiophosphinoyl imines.<br />
The reaction took place smoothly to give the corresponding aza-MBH adducts 2 in fair to<br />
excellent yield. In addition, 2 could be easily deprotected through acidic hydrolysis or methanolysis.<br />
Therefore, this protocol provides a convenient and practical synthetic method for versatile<br />
intermediates α-methylene-β-amino ketone or acid derivatives.<br />
Acknowledgments<br />
We are grateful to the National Natural Science Foundation of China (No. 20472033) for generous financial support for<br />
our programs.<br />
References<br />
[1] Shi, M.; Zhao, G. L. Tetrahedron Lett. 2002, 43, 4499.<br />
[2] Xu, X. Y.; Wang, C. G.; Zhou, Z. H.; Zeng, Z. B.; Ma, X. P.; Zhao, G. F.; Tang, C. C. Lett. Org. Chem. 2006, 3,<br />
640.<br />
98
P-118<br />
POLARITY AND CONFORMATIONS OF<br />
1,2,4,5-TETRA(TERT-BUTYLPHOSPHA)CYCLOHEXANES IN SOLUTION<br />
Ya.A. Vereshchagina, a, b E.A. Ishmaeva, b D.V. Chachkov, a A.A. Gazizova, a Z.S. Novikova<br />
a<br />
Kazan State Technological University, K. Marks St., 68, Kazan, 420015, and<br />
b<br />
Kazan State University, Kremlevskaya St., 18, Kazan, 420008, Russian Federation;<br />
e-mail: yavereshchagina@yahoo.com<br />
We studied polarity and spatial structure of 1,2,4,5-tetra(tert-butylphospha)-cyclohexanes 1, 2 by<br />
the methods of dipole moments and quantum chemical calculations. Polarity of compounds 1, 2 was<br />
determined in solution at 25°C, the coefficients of calculated equations and experimental dipole<br />
moments are presented below.<br />
t-Bu<br />
t-Bu<br />
X<br />
P<br />
P<br />
P P<br />
X<br />
X<br />
X<br />
Bu-t<br />
Bu-t<br />
1 X = lone pair of electrons; 2 X = S<br />
№ Solvent α γ Por, cm 3 µexpt, D<br />
1 benzene 3.891 0.150 267.279 3.60<br />
2 dioxane 8.582 0.369 685.899 5.76<br />
Dipole moments of possible conformers of compounds 1, 2 were calculated using vector-additive<br />
scheme and methods of quantum chemistry (program Gaussian 98, method B3LYP/6-31G* for 1;<br />
program Priroda, method PBE/3z for 2).<br />
P<br />
P<br />
t-Bu<br />
t-Bu<br />
Bu-t<br />
Conformer<br />
t-Bu<br />
1a<br />
P<br />
P<br />
P<br />
Bu-t<br />
Bu-t<br />
ΔE, kcal . mole -1 7.33 0.00<br />
µtheor, D 0.00 1.80<br />
Conformer<br />
t-Bu<br />
t-Bu<br />
P<br />
P<br />
Bu-t<br />
P<br />
1c P<br />
Bu-t<br />
ΔE, kcal . mole -1 5.45 4.93<br />
µtheor, D 1.88 1.77<br />
Four different conformations 1a-1d were found for cyclic derivative P III according to the data of<br />
calculation. In all probability, the form of twisted chair 1b was energetically preferred in the<br />
conformational equilibrium of asymmetrical chair conformations.<br />
Chair form with trans-arrangement of identical substituents at the phosphorus atoms was<br />
preferred in the conformational equilibrium for compound 2 (theoretical calculations of the ΔE and<br />
dipole moments, the calculation of dipole moments using vector-additive scheme).<br />
99<br />
1b<br />
1d<br />
t-Bu<br />
t-Bu<br />
t-Bu<br />
P<br />
P<br />
t-Bu<br />
P<br />
P<br />
P<br />
P<br />
P<br />
Bu-t<br />
Bu-t
P-119<br />
NOVEL IONIC PHOSPHINE LIGANDS: THEIR SYNTHESIS AND APPLICATION IN<br />
SUZUKI COUPLING REACTION IN IONIC LIQUID<br />
Yan Chen,Guang-Ao Yu*,Yong Ren,Xiang-Gao Meng,Jin-Tao Guan,Sheng Hua Liu<br />
Key Laboratory of Pesticide & Chemical Biology, Ministry of Education, College of Chemistry,<br />
Central China Normal University, Wuhan,,430074, China<br />
The synthesis on phosphine ligand with cobaltocenium backbone was underdeveloped [1][2] .<br />
Herein we report a general procedure for the synthesis of novel phosphine-substituted<br />
cobaltocenium salts, and their usage as ligands for Suzuki coupling reaction in ionic liquid. 1,<br />
1’-Bis(dicyclohexylphosphino) cobaltocenim hexafluorophosphate (di-cypc + PF6 - ) (1a),<br />
1,1’-bis(di-iso-propylphosphino) cobaltocenium hexafluorophosphate (di-isoppc + PF6 - ) (2a),<br />
1,1’-bis(di-tert-butylphosphino) cobaltocenium hexafluorophosphate (di-tbpc + PF6 - ) (3a), and the<br />
monophosphine ligand Cc + PR2PF6 - (Cc + = cobaltocenium; R = Cy, 1b; R = i-Pr, 2b; R = t-Bu, 3b)<br />
were synthesized and characterized by elemental analysis, spectroscopy, and X-ray crystal<br />
diffraction techniques. These ligands were proved to be air-stable and suitable for Suzuki coupling<br />
reaction in ionic liquid 1-butyl-3-methylimidazolium hexafluorophosphate (BMIM + PF6 - ), owing<br />
high catalytic activity.<br />
NaCp + ClPR2 1. n-BuLi<br />
2.CoCl2 3.C2Cl6 Co + Cl -<br />
PR 2<br />
PR 2<br />
+<br />
Co + Cl -<br />
PR2 100<br />
NH 4PF 6<br />
Co + PR2 PF -<br />
6<br />
PR 2<br />
1a R= Cy<br />
2a R= i-Pr<br />
3a R= t-Bu<br />
+<br />
Co + PR2 - PF6 1b R= Cy<br />
2b R= i-Pr<br />
3b R= t-Bu<br />
References<br />
1) Brasse, C. C.; Englert, U.; Salzer, A.; Waffenschmidt, H.; Wasserscheid, P. Organometallics 2000, 19, 3818.<br />
2) Song, L.-C.; Yu, G.-A.; Su, F.-H.; Hu, Q.-M. Organometallics, 2004, 23, 4192.
P-120<br />
SYNTHESIS AND CHARACTERIZATION OF NOVEL BILE ACIDS DERIVED<br />
H-PHOSPHONATES CONJUGATES<br />
Yan Li, Yong Ju, * Yufen Zhao<br />
Key Laboratory of Bioorganic Phosphorus Chemistry & Chemical Biology, Ministry of Education, Department of<br />
Chemistry, Tsinghua University, Beijing 100084, P. R. China, Email: juyong@tsinghua.edu.cn,<br />
Bile acids are natural origin compounds and play a very important role in biological systems. The<br />
medicinal applications of bile acids and their conjugates were reported in numerous literatures 1,2 .<br />
Such as, antiviral and the antifungal properties 3-5 and as carriers of liver-specific drugs, absorption<br />
enhancers and as cholesterol level lowering agents 6,7 . Besides their biological importance, the<br />
amphiphilic properties, the rigid concave of the backbone and the unique disposition of hydroxyl<br />
groups on the one side of the molecule make these compounds attracting building blocks for the<br />
design of synthetic receptors 7,8 . Bile acids have also been introduced to polymers that may lead to<br />
the development of new biocompatible materials 9,10 . Here, the H-phosphnates of bile acids<br />
conjugated with alcohols and nucleosides were synthesized in “one pot” reaction. The structures of<br />
these novel bile acid conjugates were confirmed by IR, 31 P NMR, 1 H NMR and HRMS and the<br />
NMR spectra.<br />
OH<br />
OH<br />
OH<br />
O<br />
OCH 3<br />
i<br />
O<br />
O PH<br />
O<br />
O O<br />
O<br />
HP<br />
HP<br />
O<br />
O<br />
O<br />
101<br />
O<br />
OCH 3<br />
ii<br />
iii<br />
O<br />
O PH<br />
O<br />
O PH<br />
O<br />
O<br />
O<br />
PH<br />
O<br />
O O<br />
O PH<br />
O<br />
O<br />
PH<br />
O O O<br />
PH<br />
O<br />
O<br />
Project supported by the NSF of China (No. 20542004) and SRFDP of Higher Education (No.20050003104).<br />
References<br />
1. Jan Sjövall. Lipids, 2004, 39, 703.<br />
2. Enhsen A, Krame W, Wess G. Drug Discovery Today 1998, 3, 409.<br />
3. Salunke DB, Hazra BG, Pore VS, Bhat MK, Nahar PB, Deshpande MV. J Med Chem 2004, 47, 1591.<br />
4. Li CH, Peters AS, Meredith EL, Allman GW, Savage PB. J Am Chem Soc 1998, 120, 2961.<br />
5. Merritt M, Lanier M, Deng G, Regen SL. J Am Chem Soc. 1998, 120, 8494.<br />
6. Wess G, Kramer W, Enhsen A, Glombik H, Baringhaus KH, Bock K, et al. Tetrahedron Lett 1993,34,817<br />
7. Virtanen E, Kolehmainen Erkki. Eur J Org Chem 2004, 3385.<br />
8. Wallimann P, Marti T, Fürer A, Diederich F. Chem Rev 1997, 97,1567.<br />
9. Zhang YH, Zhu XX. Macromol Chem Phys 1996, 197, 3473.<br />
10. Zhu XX, Nichifor M. Acc Chem Res 2002, 35,539.<br />
O<br />
OCH 3<br />
O<br />
OCH 3
P-121<br />
STUDY OF THE REACTION BETWEEN N- (O, O-DIISOPROPYL) PHOSPHORYL<br />
AMINO ACIDS AND THE MIXED NUCLEOTIDES<br />
Yanchun Guo 1 , Shuxia Cao 1 , Yali Xie 1 , Xianli Wu 1 , Xincheng Liao 1 , Yufen Zhao 1,2*<br />
1. Key Laboratory of Chemical Biology and Organic Chemistry, Department of Chemistry, Zhengzhou University,<br />
Zhengzhou, 450052, P.R.China<br />
2. Key Laboratory for Bioorganic Phosphorus Chemistry of Ministry of Education, Department of Chemistry School of<br />
Life Sciences and Engineering, Tsinghua University, Beijing 100084, P.R.China<br />
Zhao’s group has found that N- (O,O-diisopropyl) phosphoryl amino acids (DIPP-aa) not only<br />
are capable of self-assembly into oligopeptides but also can act as the phosphoryl donor to<br />
phosphorylate nucleosides to nucleotides and oilgonucleotides 1,2 . Therefore, we selected four<br />
oldest N- (O,O-diisopropyl) phosphoryl amino acids 3 and reacted with the mixed<br />
nucleotides(A/C/G/U)in pyridine. In this system, dinucleoside monophosphate (XpY) and<br />
dinucleoside diphosphate (XpYp-cyclo)(X,Y=A,C,G,U) were observed, then the possible target<br />
products were validated by analyzing their cleavage pathways and their corresponding specific ions.<br />
Backbone fragmentation was characterized by abundant c-ions as the major sequence-defining<br />
fragment ion series. The results demonstrated that the four model reactions produced different kinds<br />
of XpY and XpYp-cyclo at various range of contents, which was attributed to the different reaction<br />
activity and selectivity. It might provide experimental proof for the assumption of Dipp-aa being<br />
the smallest intermediate of co-origin of nucleic acids and proteins during origins of life.<br />
Table1 ESI-MS n data for produces of DIPP-aa and four nucleosides m/z(IR/%)<br />
Amino acid Compounds Precursor ion Fragment ion(relative intensity%)<br />
Ala MS+ UpA 574.4(26)<br />
439.2(12),421.3(100),379.1(16),337.0(7),307.1(11),<br />
257.0(21), 195.1(11)<br />
574.4/307.1 279.2(17),236.2(44),208.2(31),178.2(86),162.2(12),112.5(100)<br />
UpC 550.3(10) 439.3(41),421.3(100),379.1(17),307.1(17),265.0(25),236.0(13)<br />
550.3/307.1 279.2(17),236.2(44),208.2(31),178.2(86),162.2(12),112.6(100)<br />
MS- UpU 549.3(17) 505.1(70),462.8(29),437.0(100),420.7(19),304.8(21),210.8(15)<br />
549.3/304.8(12) 111.3(100)<br />
Arg MS- CpGp-cyclo 648.8(7) 405.6(41),281.5(100)<br />
648.8/405.6(10) 281.4(100)<br />
GpGp-cyclo 688.7(100) 564.7(16),405.5(21),281.4(4)<br />
688.7/405.5(70) 281.4(100)<br />
Gly MS- UpC 548.0(18)<br />
504.6(16),485.6(9),435.9(25),402.7(24),383.3(13),321.3(9),<br />
303.6(19)<br />
548.0/303.6 110.2(100)<br />
References<br />
[1] Zhou W H, Ju Y, Zhao Y F, et al. Origins Life Evol. Biosphere, 1996, 26:547.<br />
[2] Zhao Y F, Hu J J, JU Y, Chin. Chem. Lett. 2000, 11(5):407.<br />
[3] Woese C, [J].J Mol Evol 2:205-208.<br />
102
P-127<br />
ORGANOCATALYTIC FRIEDEL-CRAFTS ALKYLATIONS OF INDOLES WITH<br />
DIALKYL<br />
Ying-Cen Guo, Dong-Pin Li and Wen-Jing Xiao*<br />
Key Laboratory of Pesticide and Chemical Biology, Ministry of Education College of Chemistry Central China<br />
Normal University 152 Luoyu Road Wuhan Hubei 430079 China<br />
wxiao@mail.ccnu.edu.cn<br />
A series of new optically active α- indolylphosphonates have been synthesized with high<br />
enantiometric purity via Friedel-Crafts alkylations using MacMillan second generation<br />
organocatalyst with TFA as the catalytic system. The reaction gave promising results using<br />
dichloromethane. The enantiomer excess (ee) of the product was up to 95%. This approach has<br />
proved suitable for the synthesis of a wide range of α- indolylphosphonates.<br />
R 1<br />
N<br />
R 2<br />
+<br />
O<br />
P<br />
R3 R<br />
O<br />
3O R 1 = 2-Me, 5-F, 6-Cl etc.<br />
R 2 = Me, Allyl, Bn R 3 = Me, Et, iPr<br />
O<br />
N<br />
103<br />
N<br />
H<br />
O<br />
Ph<br />
CH 2Cl 2, -78 o C, 48hr<br />
TFA<br />
R 1<br />
O<br />
R P<br />
3O R3O *<br />
N<br />
R 2<br />
up to 95% ee<br />
Reference<br />
1. MacMillan, D. W. C.; Austin, J. F. J. Am. Chem. Soc. 2002, 124(7), 1172.<br />
2. Sarkisyan, Z. M.; Makarenko, S.V.; Berestovitskaya, V. M.; Deiko L. I.; Berkova, G. A. Russ. J. of General Chem.<br />
2003, 73(8), 1328.<br />
O
P-129<br />
SYNTHESIS OF L-PHENYLALANINE DIPEPTIDE MEDIATED BY<br />
PHOSPHORUS OXYCHLORIDE AND SEPARATION BY RPLC<br />
Ying-yan Yao,Kui-Lu*<br />
(School of Chemistry and Chemical Engineering, Henan University of Technology, Zhengzhou 450052, China)<br />
Phosphorus play vital roles in the chemical evolution of life. The recent years, self-assembling<br />
into peptides for amino acids mediated by inorganic phosphorus has become a focus of science<br />
research [1,2]<br />
In this paper, the reactions of self-assembly into oligo-peptides for L-Phe mediated by inorganic<br />
phosphorus were studied. To find the best experimental condition, the solvent, reaction time,<br />
reaction temperature, the molar ratio of L-Phe and POCl3 were examined. These results were found:<br />
the maximum length of peptides for L-Phe could reach hexapeptide, but time affected little the<br />
reaction of self-assembly into oligo-peptides for L-Phe; The percent conversion of L-Phe in THF<br />
was higher than that in 1,4-dioxane or acetonitrile, so THF was propitious to self-assembly into<br />
peptides for L-Phe; Hoisting temperature could also speed the reaction and facilitate to produce<br />
phosphoryl peptides, but too high(>50 ℃ ) would induce many side reactions; The reaction of<br />
self-assembly into oligo-peptides would be speeded by increasing initial concentration of L-Phe. In<br />
conclusion, the proper condition of direct synthesis was the molar ratio of L-Phe and POCl3 of 1 to<br />
1, reaction temperature of 40 ℃ , reaction time of 2h and in THF as solvent.<br />
The oligopeptides of L-Phenylalanine were purified with reverse-phase high performance liquid<br />
chromatography (RP-HPLC) on C18 column, using methyl alcohol and water as mobile phase,<br />
detect wavelength at 254nm,. The effect of the ratio of methyl alcohol and water in volume on the<br />
separation was studied, and chromatographic conditions were optimized: With this optimized<br />
condition (CH3OH: H2O, v/v =40:60), effluent of each peak was collected respectively to be<br />
analyzed with ESI-MS/MS, this result indicated the self-assembly product could be separated with<br />
HPLC well. That will provide a new method for Synthesis and Separation of oligo-peptide.<br />
Figure HPLC analysis of mixture from L- phenylalanine mediated by POCl3<br />
Acknowledgements: The authors would like to thank the financial supports from the Chinese<br />
National Science Foundation (No.20272055, 20572016), Henan Province Science Foundation for<br />
104
Prominent Youth (No.0312000900) and Office of Education of Henan Province (No.<br />
2006KYCX017).<br />
References:<br />
1. Lu, K.; Liu, Y.; Zhou, N.; Chen, Y.; Feng, Y.-P. ; Guo, X.-F.; Chen, W.; Qu, L.-B.; Zhao, Y.-F. Acta Chim. Sinica<br />
2002, 60 , 372 (in Chinese).<br />
2. Zhou, N.; Lu, K.; Liu, Y.; Chen, Y.; Tang, G.; Cao, S.-X.; Qu, L.-B.; Zhao, Y.-F. Rapid Commun Mass Sp<br />
2002,16 (8) , 790<br />
105
P-130<br />
SYNTHESIS OF SOME NEW 2-(BIS-Β-CHLOROETHYLAMIN)<br />
7-METHOXYL-3-SUBSTITUTED PHENYL-4-METHYL-1, 3,<br />
2-BENZOXAZAPHOSPHORIN 2-OXIDES<br />
Yuan Jinwei 1 , Chen Xiaolan 1* , Qu Lingbo 1,2 , Yufen Zhao ,3<br />
1<br />
Department of Chemistry, Zhengzhou University, Zhengzhou, 450052, P. R. China<br />
2<br />
Anyang Normal College, Henan Province, Anyang, 455002, P. R. China<br />
1, 3<br />
The Key Laboratory for Bioorganic Phosphorus Chemistry, Department of Chemistry School Life Sciences and<br />
Engineering, Tsinghua University, Beijing, 10084, P. R. China<br />
Cyclophosphamine is an anticancer prodrug which has to be activated in the liver via conversion<br />
by cytochrome P-450 to the cytotoxic phosphoramide mustard alkylating species. In the last four<br />
decades, various cyclic and acyclic analogs of cyclophosphamide have been synthesized to<br />
elucidate structure-activity relationships for phosphoramidate alkylating agents [1,2] . Although these<br />
studies have not yet led to drugs superior to cyclophosphamide, it remains of great interest to<br />
improve the physicochemical and biological properties of cyclophosphamide through structural<br />
modification.<br />
In this paper, we report the synthesis of some new 2-(bis-β-chloroethylamin) 7-methoxyl-3substituted<br />
phenyl-4-methyl-1, 3, 2-benzoxazaphosphorin 2-oxides (Scheme 1) designed to increase<br />
tumor selectivity and overcome tumor resistance. The structures of the products were defined by<br />
ESI-MS, NMR and IR. Biological evaluation is in progress.<br />
H 3CO<br />
OH O<br />
H 3CO<br />
+<br />
O<br />
4a-g<br />
NH 2<br />
n-butanol<br />
R H 3CO<br />
P<br />
N<br />
O<br />
N<br />
R<br />
106<br />
OH<br />
1a-g<br />
R<br />
N<br />
NEt 3,Toluene<br />
H 3CO<br />
R=H, CH 3, C 2H 5, OCH 3, NO 2, F, Br, etc.<br />
NaBH 4<br />
methanol<br />
H 3CO<br />
OH<br />
O<br />
3a-g<br />
2a-g<br />
POCl 3<br />
P<br />
N<br />
O<br />
Cl<br />
R<br />
NEt 3 Toluene<br />
Scheme 1<br />
References<br />
1. Zhuorong Li, Jiye Han, Yongying Jiang et al. Bioorganic & Medicinal Chemistry 2003, 11:4171-4178.<br />
2. P V Govardhana, P Haranath, C Suresh Reddy et al. Indian Journal of Chemistry, 2005, 44B (7): 1432-1440.<br />
Cl<br />
Cl<br />
HCl HN<br />
Cl<br />
Cl<br />
Cl<br />
O<br />
P<br />
Cl<br />
N<br />
Cl<br />
Cl<br />
4a-g<br />
NEt3 Toluene<br />
NH<br />
R
P-132<br />
THE REACTION OF PYRROLE-2,5-DIONES AND THEIR HALOGENATED<br />
DERIVATIVES WITH TRIVALENT PHOSPHORUS COMPOUNDS<br />
Yuen-Ki Cheong, Philip Duncanson and D. Vaughan Griffiths<br />
School of Biological and Chemical Science, Queen Mary, University of London, Mile End Road, London, E1 4NS, UK<br />
As part of our studies into the reactions of organic carbonyl compounds with nucleophilic<br />
trivalent phosphorus compounds, we have been investigating the reactions of a number of<br />
substituted pyrrole-2,5-diones and their halogenated derivatives with trialkyl phosphites, dialkyl<br />
phosphonites and alkyl phosphinites. These studies have already resulted in the formation of novel<br />
products by some interesting reaction pathways.<br />
O<br />
O<br />
O<br />
(EtO) 3P<br />
1<br />
O<br />
NH<br />
107<br />
HN<br />
O<br />
O<br />
P(OEt) 2<br />
Thus, for example, the reaction of triethyl phosphite with pyrrole-2,5-dione gave not only the<br />
anticipated ylide 1 but also the phosphonate 2, whose structure was confirmed by X-ray<br />
crystallography. The incorporation of halogen substituents at C-3 and/or C-4 in the<br />
pyrrole-2,5-diones has proved to be a convenient route for introducing additional phosphonate<br />
groups into the final ylide. Thus, for example, the reaction of<br />
3-bromo-4-methyl-1-phenyl-1H-pyrrole-2,5-dione 3 with Ph2(MeO)P proceeded cleanly to give the<br />
crystalline ylide 4, whose structure was also confirmed by X-ray crystallography.<br />
Cl<br />
Cl<br />
O<br />
O<br />
N<br />
Br<br />
Me<br />
5<br />
O<br />
O<br />
NPh<br />
MeO<br />
P<br />
O<br />
(MeO) 2P<br />
(MeO) 2P<br />
O<br />
OMe<br />
MeO<br />
OMe<br />
Ph2P O<br />
(Ph) 2P<br />
Me<br />
O<br />
O<br />
N<br />
NPh<br />
3 4<br />
O<br />
O<br />
NEt<br />
O<br />
2<br />
O<br />
(HO) 2P<br />
O<br />
(HO) 2P<br />
(HO) 2P<br />
O<br />
6 7<br />
Extending this approach to 3,4-dihalogenated precursors led to the formation of ylidic<br />
bisphosphonates. Thus, for example, the N-allyl substituted system 5 reacts with trimethyl<br />
phosphite to give the ylide 6, which has been converted into the trisphosphonate 7. Polymerisation<br />
of this latter compound potentially offers a novel route to highly functionalised polymers.<br />
O<br />
O<br />
N
P-134<br />
SYNTHESIS OF DIPHENYL Α-(O-PHENYL<br />
BIS(2-CHLOROETHYL)AMIDOPHOSPHORYLAMINO)PHOSPHONATES<br />
Zhanwei Cui, Zhiwei Miao,∗ Jianfeng Zhang and Ruyu Chen<br />
State Key Laboratory of Elemento-Organic Chemistry, Research Institute of Elemento-Organic Chemistry, Nankai<br />
University, Tianjin 300071, People’s Republic of China. *Email: miaozhiwei@nankai.edu.cn<br />
The phosphoryl group is of fundamental significance in many of the most important molecules<br />
that control molecular replication, cell biochemistry and metabolic processes in all living species. 1-4<br />
On the other hand, α-Amino phosphonates constitute an important class of biologically active<br />
compounds, and their synthesis has been a focus of considerable attention in synthetic organic<br />
chemistry as well as in medicinal chemistry.<br />
Nitrogen mustards (NMs) are useful chemotherapeutic agents in the treatment of lymphoma,<br />
leukemia, multiple myeloma and ovarian carcinoma. 5 The antitumor activity of NMs has been<br />
attributed to their ability to cross-link the twin strands of DNA. Phosphoramide mustard is also an<br />
alklating agent that cross-links interstrand DNA, such as cyclophosphamide (CP),ifosfamide (IFA)<br />
and trofosfamide. 6-9 Cyclophosphamide is a widely used anticancer alklating agent that requires<br />
activation in vivo. It can liberate cytotoxic phosphoramide mustard and acrolein by β-elimination.<br />
However, acrolein, a byproduct of β-elimination, can cause hemorrhagic cystitis, a side effect<br />
observed during CP therapy. To overcome the shortcoming of CP, many different kinds of<br />
compounds containing phosphamide mustard have been designed and synthesized. 10-12 On that basis,<br />
we designed and synthesized the title compound to find novel anticancer prodrug.<br />
We report here a facile synthetic method for the preparation of Diphenyl α-(O-phenyl<br />
bis(2-chloroethyl)amidophosphorylamino)phosphonates (4). It consists of the reaction of O-phenyl<br />
bis(2-chloroethyl)amidophosphoroamidoate (1) with a substituted benzaldehyde or ketones (2) and<br />
triphenylphosphite (3) in the presence of acetyl chloride as catalysis. 13 The present method affords<br />
higher yields in the condensation reaction and high purify. (Scheme 1)<br />
Reference<br />
[1] Zhou, J.; Chen, R. Y. Phosphorus, Sulfur, Silicon 1996, 118, 247.<br />
[2] Bergman, J.; Van der Plas, H. C.; Simonyi, M. Heterocycles in Bioorganic Chemistry; RSC: Cambridge, 1991.<br />
[3] Meier, C. Angew. Chem., Int. Ed. Engl., 1996, 35, 70.<br />
[4] Yuan, C.; Qi, Y. Synthesis 1986, 821.<br />
[5] Balcome, S.; Park, S.; Danae R.; Dorr, R.; Hafner, L.; Phillips, L.; Tretyakova, N. Chem. Res. Toxicol. 2004, 17,<br />
950-962.<br />
108
[6] Sladek, N. E. Pharmacol. Ther. 1988, 37, 301-305.<br />
[7] Friedman, O. M.; Myles, A.; Colvin, M. Adv. Cancer Chemother. 1979, 1, 143-204.<br />
[8] Ludeman, S. M. Curr. Pharm. Des. 1999, 5, 627-643.<br />
[9] Colvin, O. M. Curr. Pharm. Des. 1999, 5, 555-560.<br />
[10] Borch, R. F.; Liu, J. W.; Schmidt, J. P.; Marakovits, J. T.; Joswig, C.; Gipp, J. J.; Mulcahy, R. T. J. Med. Chem.<br />
2000, 43, 2258-2265.<br />
[11] Hu, L. Q.; Yu, C. Z.; Jiang, Y. Y.; Han, J. Y.; Li, Z. R.; Browne, P.; Race, P. R.; Knox, R, J.; Searle, P. F.; Hyde, E.<br />
I. J. Med. Chem. 2003, 46, 4818-4821.<br />
[12] Jain, M.; Kwon, C. H. J. Med. Chem. 2003, 46, 5428-5436.<br />
[13] Yuan, C.; Qi, Y. Synthesis .1988, 472.<br />
109
P-138<br />
MODIFIED ALKALOIDS AS ORGANOCATALYSTS FOR THE ASYMMETRIC<br />
SYNTHESIS OF ORGANOPHOSPHORUS COMPOUNDS<br />
A.O. Kolodiazhnaya, V.P.Kukhar, O.I. Kolodiazhnyi<br />
Institute of Bioorganic Chemistry and Petrochemistry, National Academy of Sciences of Ukraine,<br />
Murmanskaya str. 1, Kiev, 02094 Ukraine<br />
Organocatalysis is the acceleration of chemical reactions with a substoichiometric amount of an<br />
organic compound which does not contain a metal atom.<br />
As an important subset of the larger field of organocatalysts, interest in amino acid and<br />
peptide-based catalysts has increased over the past decade. Important progress has been made in the<br />
development of asymmetric reactions with amino acid (proline) and peptide-based catalysts.<br />
Cinchona alkaloids 1 (cinchonine, cinchonidine, quinine, etc.) are accessible and effective reagents<br />
for the asymmetric synthesis and are widely in organic chemistry [1].<br />
In this work we have studied the modified alkaloids 1-3 as organocatalysts for phospho-aldol<br />
reaction. We have found that the bifunctional cinchona derivatives 1-3 act as asymmetric<br />
catalysts in the phosphor-aldol reaction. By means of these catalysts both optical antipods of<br />
hydroxyalkylphosphonic acids have been obtained. Good enantiomeric excesses were achieved with<br />
activated aromatic aldehydes.<br />
Stereoselectivity of catalysts in case of a single asymmetric induction (R=Et) was good and high<br />
in case of a double and triple asymmetric induction. Products 4,5 were purified by crystallization<br />
and were isolated as chemically and optically pure compounds. The optical purity of these<br />
compounds was studied by means of NMR chiral solvating reagents [1]. The absolute configuration<br />
of the new stereogenic center in 4 and 5 was also assigned by analogy with other<br />
hydroxyphosphonates using the method of chemical correlation.<br />
The most effective were catalysts obtained on the base of quinine and cinchonidine (R=H,<br />
R’=PhCH2)<br />
N<br />
OR'<br />
OR<br />
N<br />
H<br />
N<br />
OR'<br />
OR<br />
1 2<br />
R'<br />
(RO) 2 P(O) OH<br />
H<br />
110<br />
N<br />
H<br />
N<br />
R=H, OMe;<br />
R' = Me3Si, Ph2P, Me, PhCH2 R'CH=O<br />
R'CH=O<br />
(RO) 2P(O)H 1 DBU or 2<br />
4 5<br />
R'<br />
3<br />
(RO) 2 P(O) H<br />
OH<br />
References<br />
1 O.I. Kolodiazhnyi Tetrahedron: Asymmetry 2005, 16, 3295.<br />
2 A.O. Kolodiazhnaya, V.P.Kukhar, O.I. Kolodiazhnyi J.Gen.Chem.Russ, 2006, 76, 1342.<br />
N
P-144<br />
REACTIONS OF AMINOACETYLENEPHOSPHONATES WITH<br />
N-NUCLEOPHILIC REAGENTS<br />
Anastasia V. Aleksandrova, Alla V. Dogadina, and Boris I. Ionin<br />
St. Petersburg State Technological Institute (Technical University), Moskovskii pr., 26, St. Petersburg, 190013, Russia,<br />
E-mail: ana_alexandrova@mail.ru<br />
Aminoacetylenephosphonates (phosphorylated ynamines) thanks to their structure are able to add<br />
neutral N-ucleophilic reagents across the triple carbon-carbon bond and these reactions are carried<br />
out strongly regioselectively with the formation of new interesting compounds possessing potential<br />
biological activity. We performed a complex investigation of the reactions of “typical”<br />
aminoacetylenephosphonates (i.e. obtained by the described method from<br />
chloroacetylenephosphonates and high-basic secondary amines [1]) with primary and secondary<br />
amines differ by their basic properties and steric characteristics. Thus, we found that at the reactions<br />
of phosphorylated ynamines with both primary and secondary amines, the basic property of the<br />
involved amine is significant for the chemoselective formation of the corresponding phosphonate<br />
structure. Reactions of aminoethynephosphonates with the primary amines with pKa 1-5 (mainly,<br />
aromatic amines) and secondary amines of the same basicity lead to formation of unsymmetrical<br />
phosphorylated acetamidines (Scheme 1) and 2,2-diaminoethenphosphonates (Scheme 2)<br />
respectively [2,3] in the absence of a catalysts.<br />
1 h, Δ<br />
(RO) 2PC CNR'2 H2NAr (RO) 2PCH2C CCl4 O O<br />
NAr<br />
Scheme 1<br />
NR'2 R=Me, Et; NR'2= NEt2, N[(CH2) 2] 2, N(CH2) 5; Ar= Ph, 4-MePh, 4-MeOPh, 4-ClPh, 2-ClPh, etc.<br />
(RO)<br />
2-3 h, Δ<br />
2(O)P NR'2 (RO) 2PC CNR'2 HNR''2 CCl4 O<br />
H NR''2 R=Me, Et; NR'2=NEt2, N(CH2) 5; HNR''2=HN(Me)Ph, HN(Ph)CH2Ph, H N<br />
111<br />
Scheme 2<br />
Further, we found that reactions of aminoacetylenephosphonates with low-basic and high-basic<br />
primary and secondary amines proceed more difficultly under rigid conditions or in the presence of<br />
acid catalysts (we used boron trifluoride etherate) with the formation of corresponding<br />
phosphonates or amidophosphates (with high-basic primary amines). Amines with bulky fragments<br />
such as t-butyl amine react with investigated ynamines by a specific way: the main product of this<br />
reaction is phosphorylated diaminoethene [4]. Thus, we showed that composition of the products of<br />
reactions of phosphorylated ynamines with primary and secondary amines depends on both basic<br />
property of the amine and its steric structure.<br />
References<br />
[1] Garibina, V.A., Dogadina, A.V., Ionin, B.I., and Petrov, A.A., Zh. Obshch. Khim., 1979, vol. 49, no. 10, p.<br />
2385-2386<br />
[2] Panarina, A.E., Aleksandrova, A.V., Dogadina, A.V., and Ionin, B.I., Rus. J. Gen. Chem., 2005, vol. 75, no. 1, p. 3-8<br />
[3] Aleksandrova, A.V., Dogadina, A.V., and Ionin, B.I., Rus. J. Gen. Chem., 2005, vol. 75, no. 10, p. 1664-1666<br />
[4] Panarina, A.E., Aleksandrova, A.V., Dogadina, A.V., and Ionin, B.I., Rus. J. Gen. Chem., 2004, vol. 74, no. 9, p.<br />
1459-1460
P-154<br />
TEMPLATE-DIRECTED SYNTHESIS OF PHOSPHOROUS CONTAINING<br />
MACROCYCLES:STRUCTURE/REACTIVITY-RELATIONSHIPS<br />
S. Bozkurt, S. Ekici, D. Jaspers, M. Nieger, E. Niecke*<br />
Anorganisch-Chemisches Institut der Universität Bonn, Germany<br />
An efficient synthetic strategy towards macrocycles is reported, which gives access to ligands with<br />
discriminative functionality and redox activity The strategy is based on a coupling reaction between<br />
two alkali metal-fixed, carbanionic centers I (template) and two specifically connected electrophilic<br />
centers II (substrate). A macrocyclic ate-complex III is formed by a two fold P-C coupling reaction.<br />
Subsequently, III can be converted to the neutral ring system IV by electrophiles (scheme). Insights<br />
into structure/reactivity relationships for transition metal complexes V from these macrocycles are<br />
reported.<br />
References:<br />
[1] S. Ekici, D. Gudat, M. Nieger, L. Nyulászi, E. Niecke, Angew. Chem. Int. Ed. 2002, 41, 3367.<br />
[2] S. Ekici, M. Nieger, R. Glaum, E. Niecke, Angew. Chem. Int. Ed. 2003, 42, 435.<br />
[3] S. Bozkurt, Thesis, University of Bonn 2004.<br />
[4] S. Ekici, Thesis, University of Bonn 2005.<br />
[5] S. Ekici, D. Jaspers, E. Ertürk, M. Nieger, A. Berkessel, E. Niecke, in preparation.<br />
[6] S. Ekici, D. Jaspers, M. Nieger, M. Kogei, C. Schalley, E. Niecke, in preparation.<br />
112
P-159<br />
SYNTHESIS AND STRUCTURE OF THIOPHENE, SELENOPHENE, AND RELATED<br />
COMPOUNDS CARRYING FOUR PHOSPHORYL GROUPS<br />
Shigeru Sasaki, Kazutaka Adachi, Masaaki Yoshifuji, and Noboru Morita<br />
Department of Chemistry, Graduate School of Science, Tohoku University<br />
Aoba, Sendai 980-8578, Japan<br />
E-mail: sasaki@mail.tains.tohoku.ac.jp<br />
Construction of the cyclic compounds fully substituted by phosphorus functional groups has<br />
attracted considerable attention, since intramolecular interactions between the phosphorus<br />
functional groups with the ring systems as well as with the neighboring phosphorus functional<br />
groups and construction of various molecular assembly based on coordination or hydrogen bond<br />
formation are expected. Such compounds can be potential candidates for various novel materials<br />
especially for biomedical materials taking various functions of phosphoric acid and its derivatives<br />
in biological systems into consideration. Recently, we reported synthesis of the<br />
( η 4 -tetraphosphorylcyclobutadiene)cobalt complexes from the diphosphorylacetylenes and<br />
construction of the one-dimensional coordination polymer.1 Herein, we report formation of<br />
dihydrotetraphosphorylthiophene 2 from diphosphorylacetylene 1, oxidation of 2 to<br />
tetraphosphorylthiophene 3, and analogous synthesis of the corresponding selenium compounds 4<br />
and 5.<br />
Reaction of less than a half equivalent of sodium hydrosulfide with 1 in ether gave<br />
dihydrothiophene 2. Although attempted aromatization of 2 with o- or p-chloranil, or DDQ resulted<br />
in recovery of 2, oxidation of 2 with mCPBA afforded the corresponding sulfoxide, and dehydration<br />
of the sulfoxide gave thiophene 3. Employment of sodium hydroselenide in place of sodium<br />
hydrosulfide gave 4, and oxidation of 4 with mCPBA afforded 5. Esters 2 and 3 can be converted to<br />
the corresponding phosphonic acids. Detailed structures and reactivities of these tetraphosphoryl<br />
heterocycles will be discussed.<br />
References<br />
1) Sasaki, S.; Tanabe, Y.; Yoshifuji, M. Chem. Commun. 2002, 1876; Sasaki, S.; Kato, K.; Tanabe, Y.; Yoshifuji, M.<br />
Chem. Lett. 2004, 33, 1004.<br />
113
P-164<br />
SYNTHESIS OF NEW β-AMINO-DERIVATIVES OF ALKENYLPHOSPHONATES<br />
R.A.Cherkasov, N.G.Khusainova, O.A.Mostovaya, E.A.Berdnikov, S.M.Rybakov<br />
Kazan State University, Kremlevskaya str.18, Kazan, 420012, Russia<br />
e-mail: narkis.khusainova@ksu.ru; rafael.cherkasov@ksu.ru<br />
The development of synthesis methods of the polyfunctionalized compounds is very important<br />
because they are used as extracting agents for noble metals, biological active substances. High<br />
reactivity of phosphorylated allenes enables to use them in the synthesis of new β-aminoderivatives<br />
of alkenylphosphonates. We have studied the interaction of 3,3-dimethylallenylphosphonates with<br />
1,2-diaminoethan.<br />
Me<br />
-<br />
Me<br />
(EtO) 2P(O)CH C C<br />
I<br />
Me<br />
+<br />
H 2NCH 2CH 2NH 2<br />
(EtO) 2P(O)CH<br />
114<br />
C<br />
H 2N<br />
II A<br />
+<br />
Me<br />
Me<br />
Me<br />
+<br />
NH 2<br />
C<br />
CHP(O)(OEt) 2<br />
Me<br />
Me<br />
(EtO) 2P(O)CH2 C<br />
(EtO) 2P(O)CH C<br />
Me<br />
Me<br />
N<br />
HN<br />
N<br />
NH<br />
Me<br />
Me<br />
C CH<br />
C CHP(O)(OEt)<br />
2P(O)(OEt) 2<br />
2<br />
Me<br />
Me<br />
IV<br />
III<br />
The X-ray data is showed that the reaction of diethyl-3,3-dimethylallenylphosphonate I with<br />
diamine II proves the formation of 2:1 addition product with enamino-structure III. By 1 H and 31 P<br />
NMR spectroscopy it was determined that enamine III in solvents proves the formation of<br />
tautomeric enamines and imines IV.<br />
We have investigated reactions of 3,3-dimethylallenylphosphonates with 2-aminobenzo-thiazole<br />
V. By X-ray diffraction analysis it was determined that the reaction of diethyl<br />
3,3-dimethylallenyl-phosphonate I with thiazole V involves the endocyclic N atom of compound V<br />
and the 1,2-double bond of phosphonate I.<br />
-
P-165<br />
DITHIOPHOSP ORYLATION OF CYCLIC MONOTERPENES<br />
Il’yas S. Nizamov 1, 2 , Artiem V. Sofronov 1 , Rafael A. Cherkasov 1 , Liliya E. Nikitina 3<br />
1<br />
Kazan State University, Kremlievskaya Str., 18, Kazan, 420008, Russia<br />
e-mail: Ilyas.Nizamov@ksu.ru lyas.Nizamov@ksu.ru<br />
2<br />
A.E. Arbuzov Institute of Organic and Physical Chemistry, Arbuzov Str., 8, Kazan, 420088, Russia,<br />
3 Kazan State Medical University, Butlerov Str., 49, Kazan, 420012, Russia<br />
There is a considerable interest in derivatives of cyclic monoterpene series compounds containing<br />
functional groups due to their possible use as biological activity substances. The importance of<br />
these compounds is also related to their skeleton structure transformations. O,O-Dialkyl<br />
dithiophosphoric acids have been reported to react with terpenes such as -pinene and dipentene at<br />
100-200 o C with the formation of additives for lubricants [1, 2]. We assumed that the initial<br />
products obtained in these patent works undergo decompositions under severe conditions used. We<br />
have carried out the reactions of dithiophosphoric acids with such terpenes as racemic camphene,<br />
(+)-limonene, (1S)-(-)- -pinene and 3-carene under milder conditions and search appropriate<br />
catalysts of addition reactions. We have found that these reactions occur at room temperature for<br />
1-3 h in the presence of catalytic amounts of anhydrous ZnCl2 to yield adducts formed in<br />
accordance with Markovnikow’s rule. In the case of camphene the adduct formation is accompanied<br />
by skeleton transformation into norbornane structure.<br />
S<br />
(RO)<br />
2<br />
PSH +<br />
R = Et, Pr-i<br />
ZnCl 2<br />
(1 %)<br />
20 o C, 1-2 h<br />
115<br />
S<br />
S-P(OR) 2<br />
The reactions O,O-dialkyl dithiophosphoric acids with (+)-limonene proceed with the participation<br />
of the exocyclic C=C bond.<br />
S<br />
(RO)<br />
2<br />
PSH +<br />
R = Et, Pr-i<br />
ZnCl 2<br />
(1 %)<br />
20 o C, 2-3 h<br />
S<br />
S-P(OR) 2<br />
The reactions studied are facilitated by Lewis acid cataysts (NiCl2, CuCl, CuCl2, FeCl3, BF3 . Et2O,<br />
AlCl3). The reactions of O,O-dialkyl dithiophosphoric acids with (1S)-(-)- -pinene can also be<br />
performed non-catalytically.<br />
References:<br />
[1] Pat. US 2611728 (1952). / Barlett J.H., Rudel H.W., Cyphers E.B., Chem. Abstr. 1953, 43, 930a.<br />
[2] Pat. US 2665295 (1954). / AUGUSTINE F.B., Chem. Abstr. 1954, 48, 12807F.
P-171<br />
GREEN SYNTHESIS OF PHOSPHORAMIDES BY TRIMETAPHOSPHATE(P3m)<br />
NI, F.; Fu, C.; Sun, S. T.; Zhao, Y. F<br />
Key Lab of Chemical Biology of Fujian Province, Department of Chemistry, Xiamen University<br />
Xiamen, 361005, China<br />
A green synthesis method with organic reagent free and efficient purificaiton procedure was<br />
developed to synthesize the phosphoramides, such as N-phosphoryl amino acids and N-phosphoryl<br />
dipeptides. This synthesis used trimetaphosphate (P3m) , a cheap and easily available phosphate, as<br />
the phosphorylated reagent and came out with target compounds and inorganic phosphates, later of<br />
which could be recycled to produce P3m.<br />
O O<br />
3Na<br />
P<br />
O O<br />
O O + H2N R<br />
P P<br />
O<br />
O O<br />
pH=10.5-11.5<br />
H 2O<br />
NH2-R= α Amino acids,<br />
β Amino acids,<br />
γ Amino acids,<br />
dipeptide<br />
O<br />
O<br />
P P<br />
O P<br />
O<br />
O<br />
O O<br />
O<br />
O<br />
O<br />
NH CH C<br />
H<br />
O<br />
O<br />
P P<br />
O P<br />
O<br />
O<br />
O O<br />
O<br />
O<br />
NH R<br />
116<br />
Scheme<br />
O -<br />
CaO<br />
fast<br />
NaOH<br />
O<br />
O<br />
O<br />
O<br />
O<br />
O<br />
O<br />
P<br />
O<br />
O<br />
P<br />
O<br />
P<br />
NH<br />
CH2<br />
OH -<br />
O<br />
2Na<br />
NH R<br />
O<br />
O<br />
P<br />
+ P2<br />
3Na<br />
NH R<br />
+ P2<br />
+ Pi
P-175<br />
PHOSPHINOGLYCINES AND PHOSPHINOGLYCOLATES<br />
J. Heinicke, a J. Lach, a N. Peulecke, a P. G. Jones, b I. Dix c<br />
Universität Greifswald a (Germany), Technische Universität Braunschweig b (Germany),<br />
University Göttingen c (Germany)<br />
A one-pot three component synthesis of novel α-phosphino glycines and α-phosphino glycolates<br />
is presented.<br />
(HO)2CHCOOH<br />
1/2 cHex2P +<br />
Et2NH2 + cHex2PH + Et2NH<br />
+<br />
5<br />
CH<br />
OH<br />
COO -<br />
+ Ph2PH + AlkNH2<br />
2<br />
Alk<br />
H 2N<br />
+ *<br />
O<br />
HO *<br />
O<br />
4<br />
117<br />
PPh 2<br />
O -<br />
H 2O<br />
PPh2<br />
O -<br />
1<br />
AlkNH3 +<br />
+ Et 2S BH 3<br />
S (MeOH)<br />
H2N<br />
Alk BH3<br />
+ *<br />
O<br />
H2N<br />
PPh2<br />
O -<br />
Alk S<br />
Chiral amines induce high diastereoselectivity and allow, in suitable cases, one-step syntheses of<br />
chiral phosphine ligands. Crystal structure analysis gives evidence on the preferred configuration.<br />
Properties of the novel compounds and first examples of use in catalysis are presented.<br />
Reference<br />
[1] J. Heinicke, N. Peulecke, DE 10 2004 029 697.9 (AT: 15. 06. 2004), DE 10 2004 029 698.7 (AT: 15.<br />
Juni 2004), PCT/DE2005/000969 (AT: 26. 05. 2005), PCT/DE2005/000970 (AT: 26. 05. 2005).<br />
+ *<br />
O<br />
2<br />
PPh2<br />
O -<br />
3
P-178<br />
STEREOSPECIFIC PREPARATION OF P-CHIROGENIC PHOSPHIDE BORANES FROM<br />
THE CORRESPONDING CHLOROPHOSPHINES<br />
H. Lauréano, a G. Morata, a M.L. Auclair, a J.C. Henry, b P. Richard, a C. Darcel a and S. Jugé a*<br />
[a] Inst. Chim. Mol. de l'Université de Bourgogne,UMR CNRS 5620, 9 av. A. Savary,<br />
21078 Dijon, France; Fax 33 3 80 39 60 98; e-mail: Sylvain.Juge@u-bourgogne.fr<br />
[b] SYNTHELOR SAS- 102 impasse H. Becquerel, Dynapôle de Ludres-Fléville 54510 Ludres, France<br />
In the recent past, significant advances have been made for the asymmetric synthesis of<br />
P-chirogenic phosphorus ligands, owing to the use of borane protecting group. The synthesis of<br />
such ligands is usually performed with phosphorus-carbon bonds formation using P-chirogenic<br />
phosphinous derivatives 1 or phosphide boranes, 2,3 as electrophilic or nucleophilic building blocks,<br />
respectively. Until now, the P-chirogenic phosphides borane are usually prepared by deprotonation<br />
of the corresponding secondary phosphine boranes in presence of sparteïne, 2 or by metal reduction<br />
of a phosphinous borane precursors. However, this method gives high stereoselectivities only when<br />
the phosphine boranes bears a sterically hindered substituents as adamantane or t-butyl.<br />
Cl<br />
BH 3<br />
P<br />
Ph<br />
R 1<br />
t-BuLi<br />
-78°C<br />
Li<br />
1 2<br />
BH 3<br />
P<br />
Ph<br />
We report herein a new efficient route to the P-chirogenic phosphide boranes 2, by<br />
stereoselective metal halide exchange of the corresponding chlorophosphine boranes1 with the<br />
t-butyllithium. The phosphide boranes 2 were then used for the preparation of various secondary 3<br />
or tertiary phosphine boranes 4 in high enantiomeric excesses, by protonation with AcOH or<br />
trapping with an alkyl halide, respectively.<br />
Reference<br />
1) Bauduin, C.; Moulin, D.; Kaloun, E.B.; Darcel, C.; Jugé, S., J. Org. Chem., 2003, 68, 4293-4301.<br />
2) Wolfe, B.; Livinghouse, T. J. Am. Chem. Soc. 1998, 120, 5116-5117.<br />
3) Miura, T.; Yamada, H.; Kikuchi, S.-I; Imamoto, T. J. Org. Chem. 2000, 65, 1877-1880.<br />
R 1<br />
AcOH<br />
118<br />
R 2 Br<br />
H<br />
R 2<br />
BH 3<br />
P<br />
3<br />
BH 3<br />
P<br />
4<br />
Ph<br />
Ph<br />
R 1<br />
R 1<br />
yield 60-75 %<br />
88-94% e.e.<br />
yields 21-75 %<br />
87-99% e.e.
P-179<br />
RECENT PROGRESSES ON P-CHIROGENIC PHOSPHINE SYNTHESIS<br />
M. L. Auclair, a G. Morata, a M. Gomès, a S. Loutsenko, a J. C. Henry, a P. Richard, a<br />
C. Darcel a and S. Jugé a *<br />
[a] Institut de Chimie Moléculaire de l'Université de Bourgogne,UMR CNRS 5620, 9 av. A. Savary, 21078 Dijon,<br />
France; Fax 33 3 80 39 60 98; e-mail: Sylvain.Juge@u-bourgogne.fr<br />
[d] SYNTHELOR SAS- 102 impasse H. Becquerel, Dynapôle de Ludres-Fléville 54510 Ludres, France<br />
Organophosphorus ligands bearing chirality on the phosphorus atom are not been the most used<br />
ligands in asymmetric catalysis until now, mainly due to the difficulty of their stereoselective<br />
preparation. Nevertheless, as their asymmetric synthesis has made in the recent past, important<br />
progresses due to the use of borane complexes, these ligands receive again a particular interest in<br />
coordination chemistry and catalysis, for the possibility to increase the steric and electronic<br />
dissymmetry of the metal center.<br />
R<br />
Ph<br />
1<br />
o-Tol<br />
Ph<br />
P<br />
Br<br />
R<br />
Ph<br />
1<br />
P<br />
P<br />
NH 2( OH)<br />
Fe<br />
Ph<br />
o-An<br />
P<br />
Ph<br />
Cl<br />
P<br />
BH 3<br />
P<br />
R<br />
Ph<br />
1<br />
NHPh<br />
119<br />
P Ph<br />
Ph<br />
Fe<br />
R<br />
Ph<br />
1<br />
P<br />
R<br />
Ph<br />
1<br />
P<br />
O<br />
P<br />
O<br />
R2<br />
R3 R<br />
Ph P P<br />
1 Ph<br />
R1 We report herein the synthesis of new P-chirogenic ligands: bulky monophosphinites,<br />
ferrocenylphosphines, o-hydroxy-, β-aminophosphines, phosphine-phosphinites, pincer ligands,<br />
indenylphosphines, and their uses in coordination chemistry or asymmetric catalysis.<br />
References<br />
1) C. Bauduin, D. Moulin, E.B. Kaloun, C. Darcel, S. Jugé J. Org. Chem. 2003, 11, 4293–4301.<br />
2) J.M. Camus, J. Andrieu, P. Richard, R. Poli, C. Darcel, S. Jugé Tetrahedron : Asymmetry 2004, 15, 2061-2065.<br />
O<br />
O
P-186<br />
SYNTHESIS OF HEXAISOPROPYLTRIAMIDEPHOSPHITE: MYTH OR REALITY?<br />
Anatoliy P. Marchenko, Georgyi N. Koidan, Yurii M. Pustovit , Mark I. Povolotskii, Aleksandr N. Chernega,<br />
Aleksandr M.Pinchuk,<br />
Institute of Organic Chemistry National Academy of Sciences of Ukraine,<br />
Murmanska Str.5, Kyiv, 02094 Ukraine<br />
It has already been informed that triamide (i-Pr2N)3P 1 was prepared by the reaction of<br />
phosphorus trichloride with di(isopropyl)amine 2. [1,2] At the same time our investigations and<br />
results of work [3] testify that this reaction stops affording (i-Pr2N)2PCl 3 due to steric hindrance.<br />
Moreover, it was found that di(isopropyl)amine 2 easily reacts with less sterically hindered and<br />
more electrophilic phosphenium cation (i-Pr2N)2P + CF3SO3 - 4. Nevertheless, the reaction doesn’t<br />
lead to the triamide 3, but it gives the diphosphine i-PrN=C[CH2P(iPr2N)2]2 5. The diphosphine 5<br />
formation most probably takes place via the reaction of the phosphenium cation 4 with ketimine<br />
i-PrN=CMe2 forming in the course of the reaction that was confirmed experimentally. [4]<br />
iPrN=CMe 2 + (i-Pr2N) 2P + CF3SO - (i-Pr 3 2N) 2P-CH2CCH3 =NPr-i<br />
-BH +<br />
(i-Pr 2 N) 2 P + CF 3 SO 3 -<br />
-BH +<br />
4<br />
B:<br />
iPrN=C(CH 2 P(NPr-i 2 ) 2 ) 2<br />
Unlike the phosphenium cation 4, chlorophosphite 3 reacts with an excess of ketimine giving<br />
dihydroazaphosphinine.<br />
N P<br />
NHPr-i<br />
i-Pr<br />
iPrN=CMe 2 + (i-Pr 2 N) 2 PCl<br />
3<br />
At the same time the reaction of the phosphenium cation 4 with less sterically hindered<br />
methylisopropylamine HNMe(Pr-i) leads to triamide (i-Pr2N)2 PN(Me)Pr-i.<br />
The synthesis of triamide 1 using the above-mentioned methods most probably could not be<br />
accomplished. An approach to triamide 1 has to be found yet.<br />
References<br />
1. Michaelis A., Lieb. Ann., 326, 129 1903.<br />
2. Nifantyev E.E., Suvorkin S.V., Rasadkina E.N. et al Zhur.Obshch.Khimii 2002, 72, 8, P. 1263-1266<br />
3. Foss V.L., Lukashev N.V., Lutsenko I.F. Zhur.Obshch.Khimii 1979, 50, 6, P.1236-1245.<br />
4. Hund H, Hund R-D., Has S., et al Phosphorus, Sulfur and Silicon, 1996, Vol.111, P.193<br />
120<br />
5<br />
6<br />
B:
P-187<br />
A CONVENIENT METHOD FOR THE SYNTHESIS OF<br />
CYCLOPHOSPHAMIDE ANALOGUES<br />
Zhang Liuji 1 , Qu Lingbo 1,2 , Zhang Baojun, Zhao Yufen 1<br />
1 Department of Chemistry, Zhengzhou University, Zhengzhou, 450052, P. R. China<br />
2 Anyang Normal College, Henan Province, Anyang, 455002, P. R. China<br />
E-mail: qulingbo@zzu.edu.cn<br />
Cyclophosphamide is an anticancer prodrug, which has better effection on most malignant tumor<br />
cells, but it has also toxicity and side-effect on normal human cells. In the last four decades, in<br />
efforts to obtain potential anticancer prodrugs and decrease the side-effect of cyclophosphamide,<br />
modifications of cyclophosphamide led to the design and synthesis of many cyclic and acyclic<br />
phosphoramidate agents. However, these extensive structure-activity relationship studies failed to<br />
produce better drugs than cyclophosphamide.<br />
In this paper, we report a convenient method for the synthesis of some new cyclophosphamide<br />
analogues (Scheme 1). These structures might be used as potential cyclophosphamide analogues<br />
designed to increase tumor selectivity, overcome tumor resistance, etc. The structures of the<br />
products were defined by ESI-MS, NMR and IR. Biological evaluation is in progress.<br />
H 3CO<br />
OH<br />
O<br />
CH 3<br />
H<br />
NaBH 3CO<br />
4<br />
CH3OH H 3CO<br />
THF<br />
NEt3 Cl<br />
OH<br />
CH 3<br />
O<br />
P<br />
Cl<br />
O<br />
OH<br />
Cl2P(O)N(CH2CH2Cl) 2 H3CO H<br />
N R<br />
P<br />
O<br />
CH 3<br />
O<br />
N<br />
H<br />
R=H, CH 3, OCH 3, F, Cl, Br<br />
Scheme 1<br />
121<br />
Et 3N, THF<br />
References<br />
1. Zhuorong Li, Jiye Han, Yongying Jiang et al. Bioorganic & Medicinal Chemistry 2003, 11:4171-4178.<br />
2. Y B Kiran, M Kasthuraiah, C Nagaraju et al. Indian Journal of Chemistry, 2005, 44B (11): 2171-2177.<br />
Project was supported by NNSFC (No. 0472076) and HNSTF (No. 0512001400)<br />
R<br />
O<br />
CH 3<br />
O<br />
P N(CH2CH2Cl) 2<br />
O
P-188<br />
CONVENIENT SYNTHESIS OF α-HYDROXYPHOSPHINATE<br />
Tao Ji, Guo Tang , Hua Fang, Yufen Zhao*<br />
Department of Chemistry and The Key Laboratory for Chemical Biology of Fujian Province, College of<br />
Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, P. R. China.<br />
Abstract: α-Hydroxyphosphinate are compounds with wide ranging biological activities and useful<br />
synthetic intermediates for a variety of natural and complex molecules. The Pudovik reaction is the<br />
most versatile pathway to the above compounds. The reaction is very sluggish without Me3SiCl. It<br />
was found that this reaction is markedly accelerated in presence of Me3SiCl when basic catalysts<br />
are added. O-alkyl phenylphosphonite was formed by the reaction of O-alkyl phenylphosphonite 1<br />
with aromatic aldehydes in presence of Me3SiCl and Et3N.<br />
O<br />
Cl<br />
Et O<br />
3N<br />
P + R OH PH + CHO P<br />
Cl<br />
Me3SiCl OR<br />
OR<br />
R=<br />
1 2 3<br />
CH3 , CH2CH3 , CH(CH3) 2 , C(CH3) 3 ,<br />
R Reaction<br />
conditions<br />
CH3CH2-<br />
122<br />
Reaction Time(h) Yield(%)<br />
Me3SiCl 6 70<br />
Me3SiCl and Et3N 1 81<br />
Me3SiCl 4 75<br />
Me3SiCl and Et3N 0.5 88<br />
References<br />
[1] Mastalerz, P. In Handbook of Orgnophorus Chemistry; Engel, R. (Ed.) New York, 1992; pp.299-305<br />
[2] Texier-boullet, F; Foucauld. A, Synthesis 1982, 165;<br />
[3] Jue-xiao Cai; Zhenghong Zhou, Heteroatom Chemistry, 2003, 14, 312-315<br />
OH
P-190<br />
SYNTHESIS OF N-(DIISOPROPYLOXYPHOSPHORYL)DIPEPTIDES<br />
IN A ONE-POT METHOD<br />
Kan Lin, Xiantong Huang, Guo Tang, Yufen Zhao<br />
The Key Laboratory for Chemical Biology of Fujian Province,Department of Chemistry and College of Chemistry and<br />
Chemical Engineering, Xiamen University, Xiamen 361005, P. R. China.<br />
Derivatives of N-phosphopeptides are of pharmaceutical and biologically active interst. Several<br />
methods for their synthesis are known. Because an efficient method to prepare highly pure and large<br />
quantities of N-phosphoamino acids has been developed in our laboratory, we can use<br />
N-(dialkoxyphosphoryl)amino acids as stock material. In this paper, coupling of<br />
N-(diisopropyloxyphosphoryl)amino acid and amino acid methyl esters, by the adduct of<br />
triphenylphosphine, hexachloroethane and triethylamine in one-pot, produced N-DIPP-dipeptide<br />
methyl esters which then were hydrolyzed to get corresponding N-DIPP-dipeptide. Target products<br />
were determined by NMR, ESI, and optical rotatory power. We hope that this convenient and<br />
efficient approach could be generally used for synthesis of polypeptides.<br />
O<br />
O<br />
P<br />
O<br />
H<br />
N H C<br />
R1 COOH<br />
2<br />
+ Ph3P<br />
O O<br />
P<br />
H<br />
N<br />
O<br />
H C<br />
R1 O<br />
C O<br />
H<br />
NH C<br />
R2 + C2Cl6 COOMe<br />
5<br />
HCl H2N i Et3N+H2O<br />
ii H +<br />
H<br />
C<br />
R 2<br />
123<br />
COOMe<br />
Et3N , CH2Cl2<br />
O<br />
O<br />
P<br />
O<br />
H<br />
N H C<br />
R 1<br />
O<br />
C<br />
O<br />
O<br />
P<br />
H<br />
N<br />
O<br />
H C<br />
R 1<br />
O<br />
C<br />
6<br />
O<br />
5<br />
O<br />
H<br />
NH C<br />
R 2<br />
COOH<br />
H<br />
NH C<br />
R2 O<br />
COOMe + Ph3P Table 1. The yields of the N-DIPP-peptides<br />
Compound DIPP-Ala-Ala DIPP-Ala-Phe DIPP-Phe-Phe DIPP-Phe-Ala DIPP-Phe-Ile<br />
Yields(%) 71 79 78 87 85<br />
References<br />
[1] Shu-Zhi Dong et al. Synthetic communications. 2001, 13, 2067.<br />
[2] Gai-Jiao Ji et al. Synthesis. 1988, 6, 444.
P-191<br />
ORGANICPHOSPHORUS COMPOUNDS AS SMALL MOLECULAR CATALYSTS IN<br />
THE DIRECT ASYMMETRIC ALDOL REACTION<br />
Qin Tao, Guo Tang*, Yu-Fen Zhao<br />
Department of Chemistry and The Key Laboratory for Chemical Biology of Fujian Province, College of Chemistry and<br />
Chemical Engineering, Xiamen University, Xiamen 361005, P. R. China.<br />
Chiral organophosphorus compounds have been synthesized and applied in the direct asymmetric<br />
aldol reaction as chiral catalysts. High enantioselectivities were achieved for a series of ketones and<br />
substituded benzaldehydes.<br />
In this article we synthesize chiral organicphosphorus [1], [2] 1 and 2( Fig. 1), then apply them as<br />
chiral catalysts in the direct asymmetric aldol reaction and obtain good enantioselectivities (Scheme<br />
1). Other nucleophilic reactions such as Michael addition are under researching.<br />
R<br />
R= NO2 Cl<br />
CN<br />
O<br />
+<br />
O<br />
N<br />
H<br />
O<br />
P O<br />
O N<br />
H<br />
1 2<br />
O<br />
( )<br />
Fig. 1<br />
124<br />
1or2<br />
O<br />
P<br />
O<br />
O<br />
acetone/DMSO/CCl 3<br />
Scheme 1<br />
O OH<br />
Reference<br />
[1] A. R. Katritzky, X. L. Cui, B. Yang and P. J. Steel, J. Org. Chem., 1999, 64, 1979–1985。<br />
[2] Peter Din′er and Mohamed Amedjkouh, Org. Biomol. Chem,2006,4,2091-2096<br />
R
Symposium 2<br />
Phosphorus Coordination Compounds<br />
and their Use as Catalysts
KL-5<br />
DESIGN AND SYNTHSIS OF SPIRO PHOSPHORUS LIGANDS FOR<br />
ASYMMETRIC CATALYSIS<br />
Qi-Lin Zhou<br />
State Key Laboratory and Institute of Elemento-organic Chemistry, Nankai University<br />
Tianjin 300071, China<br />
Chiral phosphorus ligands play a crucial role in transition-metal-catalyzed asymmetric reactions,<br />
and many effective chiral phosphorus ligands have been synthesized over the past few decades.<br />
Since there are no universal ligands and catalysts for asymmetric transformations and the<br />
enantioselectivity is substrate-dependent in most asymmetric reactions, the search for efficient<br />
chiral ligands in terms of high enantioselectivity, and high turnover number (TON) remains one of<br />
the most important goals in asymmetric catalysis. Recently, we developed a new class of<br />
phosphorus ligands with chiral spirobiindane and spirobifluorene backbones and demonstrated they<br />
are highly efficient for number of asymmetric transformations. In this presentation we will discuss<br />
our new investigations on the development of these novel chiral spiro phosphorus ligands and their<br />
applications in transition-metal-catalyzed asymmetric hydrogenation and carbon-carbon bond<br />
forming reactions.<br />
O<br />
O P<br />
R<br />
N<br />
R<br />
PAr 2<br />
PAr 2<br />
O<br />
P OR<br />
O<br />
125<br />
O<br />
P<br />
O<br />
R P R<br />
Acknowledgment<br />
We thank the National Natural Science Foundation of China, and the Ministry of Education of<br />
China for financial support.<br />
References<br />
(1) Shi, W.-J.; Zhang, Q.; Xie, J.-H.; Zhu, S.-F.; Zhou, Q.-L. J. Am. Chem. Soc. 2006, 128, 2780.<br />
(2) Duan, H.-F.; Xie, J.-H.; Shi, W.-J.; Zhang, Q.; Zhou, Q.-L. Org. Lett. 2006, 8, 1479.<br />
(3) Duan, H.-F.; Jia, Y.-X.; Wang, L.-X.; Zhou, Q.-L. Org. Lett. 2006, 8, 2567.<br />
(4) Cheng, X.; Xie, J.-H.; Li, S.; Zhou, Q.-L. Adv. Synth. Catal. 2006, 348, 1271.<br />
(5) Hou, G.-H.; Xie, J.-H.; Wang, L.-X.; Zhou, Q.-L. J. Am. Chem. Soc. 2006, 128, 11774.<br />
(6) Zhu, S.-F.; Xie, J.-B.; Zhang, Y.-Z.; Li, S.; Zhou, Q.-L. J. Am. Chem. Soc. 2006, 128, 12886.<br />
PAr 2<br />
PAr 2
KL-6<br />
SYNTHESIS AND APPLICATION OF NEW P-CHIRAL PHOSPHINE LIGANDS<br />
Tsuneo Imamoto<br />
Department of Chemistry, Faculty of Science, Chiba University, Yayoi-cho, Inage-ku Chiba 263-8522, Japan<br />
126
KL-15<br />
MY EXCURSION TO THE CHEMISTRY OF STABLE DIRADICALS:<br />
DIPHOSPHETANEDIYLES<br />
Edgar Niecke<br />
Anorganisch-Chemisches Institut der Universität Bonn, Germany<br />
Diradicals (diradicaloids) containing elements of the p-block [1] are structures in their own right,<br />
since they are stable entities in contrast to the plethora of highly unstable diradicals discussed in<br />
organic chemistry[2]. They promise extraordinary properties due to their peculiar electronic<br />
structure[3].<br />
Within this report an overview on the structure and reactivity of 1,3-diphosphetane-2,4-diyles 1<br />
will be given. Investigation will be presented in detail under following subjects:<br />
i) the photochemical and thermal interconversions involving valence isomers 1-4<br />
ii) the chemical behaviour of 1 as a crypto-carbene 3<br />
iii) the coupling of diradical 1 via p/d block metals and organic spacer fragments: achieving an<br />
electronic communication between the unpaired electrons through the spacer 5<br />
iv) the reactivity towards acids or bases, to yield the ions 6,8<br />
v) the electron transfer reactions leading to persistent radical cations 7, and temporarily<br />
traceable anionic radicals 9, as well as subsequent reactions.<br />
Furthermore, the synthesis and reactivity of a radical anion containing the<br />
1,4-diphosphabutandiene 4 skeleton will be discussed in detail.<br />
RP PR RP PR RP PR RP PR RP PR<br />
1 3<br />
RP PR RP<br />
RP PR RP PR<br />
RP<br />
2<br />
Spacer<br />
4 5<br />
127<br />
6 7<br />
RP PR<br />
8 9<br />
Reference<br />
[1] a) E. Niecke, A. Fuchs, F. Baumeister, M. Nieger, W.W. Schoeller, Angew. Chem. Int. Ed. 1995, 34, 555; (b)<br />
G.Bertrand, (c) H. Sugiyama, S. Ito, M. Yoshifuji, Angew. Chem. Int. Ed.. 2003, 42, 3932; (d)<br />
[2] W.T. Borden, H. Iwamura, J.A. Berson (1994), Acc. Chem. Res., 27, 109.<br />
[3] (a) M.Sebastian, M. Nieger, W.W. Schoeller, E.Niecke, Chemistry; (b) W.W. Schoeller, E.Niecke, J Phys. Chem.<br />
submitted.
KL-17<br />
INNOVATIVE CHIRAL PHOSPHORINES FOR<br />
HYDROGENATION AND HYDROFORMYLATION<br />
Xumu Zhang<br />
Department of Chemistry, Penn State University, University Park, PA 16802, xumu@chem.psu.edu, +1-814-880-4373<br />
(phone). Since 1/1/07, Professor II, Center for Molecular Catalysis, Department of Chemistry and Chemical<br />
biology, Rutgers University, NJ 08854, xumu@rutgers.edu<br />
The research in my group addresses fundamental and practical problems in this field by<br />
developing a diverse set of chiral ligands which combine with transition metals to form effective<br />
catalysts. We are also inventing new metal-catalyzed reactions through screening of reaction<br />
conditions. Our technologies have been used by pharma and fine chemical companies<br />
internationally for the synthesis of chiral pharmaceutical products in a highly efficient,<br />
cost-effective and environmentally compliant way. Selected chiral ligands developed by us are<br />
TunePhos, Binaphane, TangPhos, Binapine, and DuanPhos. Transitional metal complexes (Ru,<br />
Rh, Pd and Ir) with our chiral ligands are highly enantioselective (up to 99%ee) and active (up<br />
to 100,000 turnovers) catalysts for hydrogenation of many types of ketones, imines and olefins.<br />
Commercial scale of several ligands have been produced for practical synthesis if chiral<br />
molecules. Recently, we have developed YanPhos for asymmetric hydroformylation. Up to<br />
99% ee have been achieved. These methods provide useful ways to make chiral amines,<br />
alcohols, alpha and beta-amino acids, acids, aminoalchohols and other chiral building blocks.<br />
128
KL-30<br />
PHOSPHORUS LIGANDS DESIGN FOR COORDINATION CHEMISTRY<br />
AND CATALYSIS<br />
P.L. Floch<br />
Laboratoire « Hétéroéléments et Coordination UMR CNRS 7653, Département de Chimie,Ecole Polytechnique, 91128<br />
Palaiseau Cedex, France Email: lefloch@poly.polytechnique.fr<br />
The structural and electronic design of ligands is crucial in the elaboration of highly performant<br />
and selective catalysts. Over the last few years, most of our activity focused on the synthesis of<br />
phosphorus ligands that exhibit a strong π-accepting capacity 1 as well as a on the synthesis of<br />
mixed architectures featuring different heteroatoms (P-olefin ligands, 2 P~N, 3 P~S 4 heteroditopic<br />
ligands). Many efficient catalytic systems were developed for different transformations such as<br />
hydroformylation, 5 C-C and C-B and C-N coupling reactions. 6 A part of the lecture will focus on<br />
the design of efficient palladium based catalysts for the allylic allylation of primary amines using<br />
allylic alcohol as substrate.<br />
A detailedinvestigation of the catalytic cycle through DFT calculations allowed the design of a<br />
very simple and efficient catalyst and shed some light on related catalytic transformations such as<br />
the hydroamination of olefins and dienes. 7<br />
The second part of the lecture will focus on the use of mixed P~N and P~S ligands in the<br />
oligomerization of ethylene into butene 8 and the activation of small molecules and C-H bonds<br />
respectively.<br />
References<br />
[1] Le Floch, P.; Coord. Chem. Rev. 2006, 627.<br />
[2] Thoumazet, C.; Ricard, L.; Grutzmacher, H.; Le Floch,P. Chem. Commun. 2005, 1592.<br />
[3] Boubekeur, L. ; Ulmer, S. ; Ricard, L. ; Mézailles, N. ; Le Floch, P. Organometallics, 2005, 25, 315.<br />
[4] Doux, M. ; Ricard, L. ; Le Floch, P. ; Jean, Y. Organometallics, 2005, 24, 1608.<br />
[5] Mora, G. ; van Zutphen, S. ; Thoumazet, C.; Le Goff, X. F.; Ricard, L.; Grutzmacher, H. Le Floch,<br />
P.,Organometallics, 2006, 25, 5528.<br />
[6] M. Doux, N . Mézailles, M. Melaimi, L. Ricard, P. le Floch, Chem. Commun. 2002, 1566.<br />
[7] Piechaczyk, O.; Thoumazet, C.; Jean, Y.;Le Floch, P. J. Am. Chem. Soc. 2006, 128, 14306.<br />
[8] Buchard, A. ; Auffrant, A. ; Klemps, C. ; Vu-Do, L. ; Boubekeur, L. ; Le Goff, X. F. le Floch, P.,<br />
129
IL-8<br />
AMBIPHILIC PHOSPHINE/BORANE DERIVATIVES: SYNTHESIS AND<br />
COORDINATION PROPERTIES<br />
S. Bontemps a , G. Bouhadir a , K. Miqueu b , L. Maron c , D. Bourissou a<br />
a<br />
Laboratoire Hétérochimie Fondamentale et Appliquée (UMR 5069), Université Paul Sabatier, 118 route de Narbonne,<br />
F-31062 Toulouse cedex 4, France, Fax: +33 (0)5 6155 8204, Email: dbouriss@chimie.ups-tlse.fr.<br />
b<br />
Equipe de Chimie-Physique (UMR 5254-IPREM), Avenue de l'Université, BP 1155<br />
F-64013 Pau cedex, France.<br />
c<br />
Laboratoire de Physique et Chimie des Nano-Objets (UMR5215), INSA, 135 avenue de Rangueil,<br />
F-31077 Toulouse Cedex, France.<br />
Lewis acids are frequently involved in organometallic chemistry as co-catalysts. In particular,<br />
their ability to activate complexes via ligand abstraction is well-recognized. 1 The possibility for<br />
Lewis acids to behave as ligands for transition metals has also been demonstrated, 2,3 although this<br />
coordination mode remains very rare. In this perspective, we are investigating ligands combining<br />
Lewis base and Lewis acid coordination sites, so-called ambiphilic ligands.<br />
Lewis<br />
base<br />
spacer<br />
Lewis<br />
acid<br />
ML n<br />
130<br />
[ML n ]<br />
The synthesis, structure and coordination properties of mono- and di-phosphine-borane ligands 1<br />
and 2 will be presented. 4 The different coordination modes adopted by these ambiphilic ligands will<br />
be discussed, from both experimental and theoretical viewpoints.<br />
R 2 P BR' 2<br />
1<br />
B<br />
R'<br />
R 2 P PR 2<br />
2<br />
R 2 P BR' 2<br />
L n M X<br />
R 2 P<br />
R 2 P<br />
R 2 P BR' 2<br />
Acknowledgements: Thanks are due to the CNRS, UPS, and the French Ministry of Research and<br />
New Technologies (ACI JC4091, ANR BILI) for financial support of this work and to IDRIS<br />
(CNRS, Orsay, France) for calculation facilities.<br />
References<br />
1aW. E. Piers et al Organometallics 1995, 14, 4617. 1bG. Erker et al J. Am. Chem. Soc. 2004, 126, 11046. 1cD. Zargarian<br />
et al J. Am. Chem. Soc. 2004, 126, 8796.<br />
2For a triphenylalane complex, see: J. M. Burlitch, R. E. Hugues et al Inorg. Chem. 1979, 18, 1097.<br />
3For the first structural characterization of a borane complexes, see: A. F. Hill et al Angew. Chem. Int. Ed. 1999, 38,<br />
2759.<br />
4aS. Bontemps, H. Gornitzka, G. Bouhadir, K. Miqueu, D. Bourissou Angew. Chem. Int. Ed. 2006, 45, 1611. 4bS.<br />
Bontemps, G. Bouhadir, K. Miqueu, D. Bourissou J. Am. Chem. Soc. 2006, 128, 12056.<br />
BR'<br />
ML n<br />
M Ln
IL-11<br />
SYNTHESIS AND ASYMMETRIC CATALYSIS OF NEW CHIRAL TETRADENTATE<br />
AMINOPHOSPHINE LIGANDS<br />
Yan-Yun Li, Zhen-Rong Dong, Wei-Yi Shen, Gui Chen, Xue-Qing Zhang, Hui Zhang , Jingxing Gao<br />
State Key Laboratory of Physical Chemistry of Solid Surfaces, Department of Chemistry<br />
Xiamen University, Fujian, P.R.China<br />
For the past decades, chiral phosphine compounds are becoming the most important and popular<br />
ligands in asymmetric catalysis. Recently, chiral mixed P, N-ligands have attracted considerable<br />
attention because of the distinctly different characteristics of a “soft” phosphorus with π-acceptor<br />
properties and a “hard” nitrogen atom acting as an σ-donor ability. The π-acceptor character of the<br />
phosphorus atom can increase basicity and stabilize a metal center in a low oxidation state, while<br />
the nitrogen σ-donor ability makes a weaker coordination to metal center and easily dissociates in<br />
solution to afford a vacant site for the substrate coordination. This favorable combination displays<br />
important rule during a catalytic cycle.<br />
Several chiral tetradentate PNNP-type ligands with sp 2 -N and sp 3 -N were conveniently<br />
synthesized by the condensation of o-(diphenylphosphino)benzaldehyde and appropriate chiral<br />
diamine with 85-93% yield.<br />
H H<br />
N N<br />
P Ph 2<br />
Ph<br />
3<br />
P<br />
Ph 2<br />
Ph<br />
H H<br />
N N<br />
P Ph 2<br />
9<br />
P<br />
Ph 2<br />
[ H ]<br />
[ H ]<br />
N<br />
P<br />
Ph 2<br />
Ph<br />
2<br />
N<br />
P Ph 2<br />
H 2N NH 2<br />
1<br />
Ph<br />
H 2N NH2<br />
7<br />
Ph Ph<br />
N<br />
P<br />
Ph 2<br />
8<br />
N<br />
P Ph 2<br />
CHO<br />
PPh2 131<br />
H CH 3<br />
H 2N NH 2<br />
4<br />
H 2N NH 2<br />
10<br />
N<br />
H<br />
N N<br />
CH 3 H CH 3<br />
N<br />
[ H ]<br />
P<br />
Ph 2<br />
P<br />
Ph 2<br />
P<br />
Ph 2<br />
P<br />
Ph 2<br />
5 6<br />
[ H ]<br />
H<br />
N N<br />
P<br />
Ph2 P<br />
Ph2<br />
P<br />
Ph2 11 12<br />
Scheme 1 Synthesis of chiral PNNP ligands<br />
Based on these mixed P, N-ligands, a family of chiral PNNP ligands with Ru (II), Rh (I) and Ir (I)<br />
complexes have been prepared and fully characterized. These complexes have been proved to be<br />
excellent catalyst precursors for the asymmetric transfer hydrogenation of a series of ketones using<br />
2-propanol as hydrogen source, leading to the corresponding optical alcohols with up to 99% ee and<br />
even the molar ratio of ketone to catalyst up to 10000: 1.<br />
R 1<br />
O<br />
R 2<br />
*<br />
R 1<br />
R 2<br />
OH<br />
chiral PNNP-M catalyst<br />
+ +<br />
16 examples up to 99% ee<br />
Scheme 2 Asymmetric transfer hydrogenation of aromatic ketones<br />
OH<br />
H<br />
N<br />
N<br />
H<br />
P<br />
Ph2 H<br />
O
Chiral PNNP-Ir(I) complexes have been also used in the enantioselective redox reaction of<br />
ketones and alcohols. In the presence of KOH, the oxidative kinetic resolution of several racemic<br />
second alcohols gave the excellent enantioselectivity of up to 98% ee.<br />
R 1<br />
R 1<br />
*<br />
OH<br />
OH<br />
R 2<br />
R 2<br />
+ R +<br />
1<br />
+<br />
Ir(I)-PNNP PNNP:<br />
R 1<br />
OH<br />
O<br />
R 2<br />
R 2<br />
Scheme 3 Oxidative kinetic resolution of racemic second alcohols<br />
These results indicate that chiral tetradentate PNNP ligands represent a new class of mixed-P, N<br />
organic ligands. They possess a versatile reactivity towards metal atoms and can provide better<br />
control the coordination number and stereochemistry of the resulting metal complexes.<br />
Continuation of studying on the electronic and steric properties will develop more effective<br />
polydentate P, N-ligands and further expand their use in asymmetric catalysis.<br />
References<br />
[1] J.-X. Gao, T. Ikariya and R. Noyori, Organometallics, 15, 1087 (1996).<br />
[2] H. Zhang, C.-B. Yang, Y.-Y. Li, Z.-R. Dong, J.-X. Gao, H. Nakamura, K. Murata and T. Ikariya, Chem. Commun.,<br />
142 (2003).<br />
[3] J.-S. Chen, Y.-Y. Li, Z.-R. Dong, B.-Z. Li and J.-X. Gao, Tetrahedron Lett., 45, 8415 (2004).<br />
[4] Z.-R. Dong, Y.-Y. Li, J.-S. Chen, B.-Z. Li, Y. Xing and J.-X. Gao, Org. Lett., 7, 1043 (2005).<br />
[5] Y.-Y. Li, X.-Q. Zhang, Z.-R. Dong, W.-Y. Shen, G. Chen and J.-X. Gao, Org. Lett., 8, 5565 (2006).<br />
[6] Y. Xing, J.-S. Chen, Z.-R. Dong, Y.-Y. Li and J.-X. Gao, Tetrahedron Lett., 47, 4501 (2006).<br />
The financial support from NSFC (20373056, 20423002) and Fujian PSTC (2005YZ1020) is<br />
gratefully acknowledged.<br />
+<br />
132<br />
O<br />
OH<br />
H<br />
N<br />
**<br />
P<br />
Ph2 N<br />
H<br />
P<br />
Ph 2
IL-13<br />
PHOSPHORUS CHEMISTRY & SUSTAINABLE DEVELOPMENT<br />
Pascal Metivier<br />
Rhodia, R&D for Phosphorous and Performance Derivatives Oak House, reeds Crescent Watford, WD24 4QP, UK<br />
133
IL-14<br />
PHOSPHINE AND PHOSPHINE-MIMIC COMPLEXES IN CATALYSIS<br />
T. S. Andy Hor<br />
Department of Chemistry, National University of Singapore, Singapore, 117543<br />
Email: andyhor@nus.edu.sg<br />
Phosphines are probably the most widely used ligands in supporting homogeneous catalysts.<br />
They offer good σ and π donor and accepting properties and are easily tunable, electronically and<br />
sterically. Unfortunately, they are also plagued by problems such as solution dissociation, aerial<br />
oxidation and thermal degradation. There has been therefore a strong call for alternative ligands,<br />
termed “phosphine mimics”, that share the strengths but not the weaknesses of phosphines. We<br />
have recently embarked on a project to examine the viability of N,S-heterocyclic carbenes (NSHC)<br />
as such mimics. 1 Early results on their chemical stability, structural integrity and catalytic activities<br />
are promising. In this presentation, we shall summarize our latest findings especially on the<br />
syntheses and structural elucidation of these mimicking ligands.(Figures below) We shall also take<br />
a glimpse at the immediate prospect and challenges of this type of novel complexes in catalysis.<br />
Acknowledgement: This work was carried out by the Ph.D. scholar Ms Swee-Kuan YEN and in<br />
collaboration with my colleague Dr H. Vinh HUYNH. It is funded by NUS and A*Star of<br />
Singapore.<br />
References<br />
S. K. Yen, L. L. Koh, F. E. Hahn, H. V. Huynh and T. S. A. Hor, Organometallics, 2006, 25, 5105.<br />
134
IL-40<br />
SYNTHESIS AND CHEMISTRY OF METALLABENZYNE<br />
Tingbin Wen, a, * and Guochen Jia b, *<br />
a<br />
The College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, P. R. China. Email:<br />
chwtb@xmu.edu.cn<br />
b<br />
Department of Chemistry, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong<br />
Kong, P. R. China. Email: chjiag@ust.hk<br />
Tertiary phosphines, PR3, can alter electronic and steric properties over a very broad range by<br />
varying R group. Thus they can act as supporting ligands in an exceptional wide variety of<br />
organometallic compounds and constitute one of the most widely used ligands in organometallic<br />
chemistry.<br />
Following the reported work on the ruthenium vinylidene complexes RuCl2(=C=CHR)(PPh3)2<br />
with the simplest tertiary phosphine PPh3 as ligand, which can be prepared conveniently from the<br />
reaction of RuCl2(PPh3)3 with HC≡CR and act as an alternative to Grubbs’ catalysts for olefin<br />
metathesis, we were tempted to prepare analogous osmium vinylidene complexes<br />
OsCl2(=C=CHR)(PPh3)2 via similar preparative routes. Unexpectedly, the reaction of OsCl2(PPh3)3<br />
(1) with HC≡CSiMe3 lead to the formation of the first metallabenzyne complex 2, which represents<br />
a new class of organometallic compounds. Metallabenzynes are interesting because they are<br />
structurally related to metallabenzenes and benzynes. We thus initiated a program directed toward<br />
the synthesis and chemistry of metallabenzyne. This presentation will report some of our progress<br />
in this field.<br />
Cl<br />
Cl<br />
Cl<br />
Cl<br />
Cl<br />
Cl<br />
PPh 3<br />
Os<br />
PPh 3<br />
Os<br />
PPh 3<br />
PPh 3 SiMe 3<br />
PPh 3<br />
NaCl HBF 4<br />
PPh 3<br />
Os<br />
PPh 3<br />
1<br />
SiMe 3<br />
CH 3<br />
SiMe 3<br />
2<br />
5<br />
Ar<br />
( Ar = Ph,<br />
p- tolyl )<br />
CH 3<br />
PPh 3<br />
Cl<br />
C<br />
Cl<br />
Os<br />
C<br />
C H<br />
Ar<br />
3<br />
AgOTf<br />
N<br />
Br 2<br />
Br 2<br />
N<br />
Br<br />
Br<br />
PPh 3<br />
PPh 3<br />
Os<br />
PPh 3<br />
N<br />
N<br />
H<br />
C Ar<br />
6<br />
PPh 3<br />
Os<br />
PPh 3<br />
7<br />
Br<br />
Br<br />
135<br />
(Ph 3P)Au R<br />
CH 3<br />
Et 3NHCl<br />
R = Ph, p- tolyl,<br />
SiMe 3, Bu n<br />
SiMe 3<br />
SiMe 3<br />
2OTf-<br />
2+<br />
CH 3<br />
NaBH 4<br />
MeOH<br />
K2CO3 Cl<br />
Cl<br />
PPh 3<br />
Os<br />
Ar<br />
PPh 3<br />
R<br />
H<br />
4<br />
H<br />
SiMe3 Me<br />
H<br />
N<br />
Os<br />
SiMe3 N<br />
PPh 3<br />
8<br />
Ph3P Me<br />
O H<br />
N<br />
Os<br />
N<br />
Ph3P 9<br />
SiMe 3<br />
CH 2Ar<br />
+<br />
OTf-<br />
+ OTf-<br />
CH 3
O-35<br />
SYNTHESIS OF STRAINED-RING PHOSPHORUS HETEROCYCLES FROM<br />
PHOSPHATRIAFULVENES AND PHOSPHAHEPTAFULVENES<br />
Heydt, H. Bergsträber, U. Hofmann, M.A. Werner, S. Regitz, M<br />
Department of Chemistry, Technical University of Kaiserslautern<br />
67663 Kaiserslautern, Germany<br />
The developments in the chemistry of low-coordinate phosphorus compounds are essentially<br />
dominated by compound possessing P/C double bonds. In accord with the Pauling<br />
electronegativities, the carbon atom in such a bond carries partial negative charge and the<br />
phosphorus atom partial positive charge. This polarization is reinforced in the<br />
phosphapentafulvenes by the formation of an aromatic cyclopentadienide increment.<br />
Phosphaalkenes with an inverse electron distribution are also known. They can be realized from<br />
phosphatriafulvenes or phosphaheptafulvenes when the positive charge is stabilized in a<br />
Hückelaromatic cation. The contribution deals with the synthesis and reactivity of these interesting<br />
phosphaalkenes with emphasis of the inverse electron distribution. Evidence for the inverse charge<br />
distribution will be presented by their reaction with nucleophiles, electrophiles and phosphaalkynes,<br />
from their spectroscopic data, as well as from crystallographic analysis and from ab initio<br />
calculations .[1,2] Furthermore, many of these result are previously unreleased in chemical journals.<br />
Reference<br />
[1] M. A. Hofmann, PhD Thesis; Technical University of Kaiserslautern: Germany, 2000<br />
[2] S Werner, PhD Thesis; Technical University of Kaiserslautern: Germany, 2002<br />
136
O-36<br />
HIGHLY FUNCTIONALISED PHOSPHORUS LIGANDS: SYNTHESIS AND DIVERSE<br />
COORDINATION CHEMISTRY<br />
Martin B. Smith<br />
Department of Chemistry, Loughborough University, Loughborough, Leics, LE11 3TU, UK.<br />
E-mail: m.b.smith@lboro.ac.uk<br />
Highly functionalised phosphorus(III) ligands continue to find many diverse applications in areas<br />
such as transition-metal catalysed reactions, organic transformations, supramolecular chemistry,<br />
medicinal chemistry and as selective metal extractants. 1-3 This oral paper will present some of our<br />
recent developments regarding new mixed donor atom terdentate (P2O-, PN2-) and tetradentate<br />
(PN3-, PN2O-, P2N2) phosphines derived from readily available Ph2PCH2OH (1), 2-Ph2PC6H4CHO<br />
(2) or 2-Ph2PC6H4NH2 (3) precursors. Synthetic details to these multidentate phosphines, their<br />
diverse late-transition metal coordination chemistry and unusual reactivity will also be given. 4,5<br />
OH<br />
Ph<br />
P Ph<br />
Ph<br />
CHO<br />
P Ph<br />
(1) (2) (3)<br />
P 2O-, P 2N 2ligands<br />
PN 3-, PN 2Oligands<br />
137<br />
Ph<br />
NH 2<br />
PN 2ligand<br />
P Ph<br />
References<br />
1. J. H. Downing and M. B. Smith, Phosphorus Ligands in, Comprehensive Coordination Chemistry II, Ed. A. B. P.<br />
Lever, Elsevier, Oxford, 2003, vol. 1, 253.<br />
2. S. E. Dann, S. E. Durran, M. R. J. Elsegood, M. B. Smith, P. M. Staniland, S. Talib and S. H. Dale, J. Organomet.<br />
Chem., 2006, 691, 4829.<br />
3. M. B. Smith, S. H. Dale, S. J. Coles, T. Gelbrich, M. B. Hursthouse and M. E. Light, CrystEngComm., 2006, 8, 140.<br />
4. M. R. J. Elsegood, M. B. Smith and P. M. Staniland, Inorg. Chem., 2006, 45, 6761.<br />
5. S. E. Durran, M. R. J. Elsegood, S. R. Hammond and M. B. Smith, submitted for publication.
O-37<br />
P* CHIRAL AMINOPHOSPHINE COMPLEXES OF COPPER (I): SYNTHESIS AND<br />
X-RAY STRUCTURAL CHARACTERIZATION<br />
T. Arun Luiz a , Babu Varghese b and M. N. Sudheendra Rao a *.<br />
a Department of Chemistry, Indian Institute of Technology Madras, Chennai -600036 (India).<br />
b Sophisticated Analytical Instruments Facility, Indian Institute of Technology Madras, Chennai - 600036 (India).<br />
Chemistry of phosphine complexes with copper (I) is an actively investigated area. Different<br />
structural types with varying coordination number at copper have been realized. Copper (I)<br />
phosphine complexes find applications in variety of fields which include medicine, catalysis,<br />
material science etc [1-3]. The use of ancillary ligands such as bipyridyl etc is known to influence<br />
stereochemistry and properties of the resultant complex significantly. Aminophosphines which are a<br />
novel class of phosphorus(III) ligands carrying one or more amino substituents on phosphorus have<br />
not been adequately employed as ligands in metal chemistry. P* chiral aminophosphines, are even<br />
much less investigated.<br />
In this investigation, P* chiral aminophosphine, (Diisopropylamino)<br />
(Morpholino)(Phenyl)Phosphine recently synthesized by us has been made use of in the reactions<br />
with copper(I) halide as precursors . Bipyridyl has also been used as ancillary ligand in some of<br />
the reactions. Both monomeric and dimeric copper (I) complexes with different coordination<br />
number at copper have been isolated and characterized by using spectral and X-ray structural<br />
methods. X-ray structures reveal strong Copper-Phosphorus bonds ( ~ 2.18 Å) and different<br />
roles played by the halide ligand. The details of this study will be presented in this poster.<br />
References<br />
1. Marzano, C. ; Pellei, M. ; Alidori, S. ; Brossa, A. ; Lobbia, G. G.; Tisato, F. ; C. Santini, J .Inorg. Biochem., 2006,<br />
100, 299.<br />
2. Grodzicki, A.; Lakomska, I. ; Piszczek , P.; Szymanska, I.; Szlyk., E. Coord. Chem. Rev., 2005, 249, 2232.<br />
3. Cormick, T. M.; Jia, W. L ; Wang, S Inorg. Chem., 2006, 45, 147.<br />
138
O-38<br />
PHOSPHORUS TRIVALENT REAGENTS: EFFICIENT TOOLS FOR<br />
MULTICOMPONENT AND ORGANOCATALYTIC REACTIONS<br />
David Virieux*, Anne Françoise Guillouzic, Henri-Jean Cristau, Jean-Luc Pirat<br />
Laboratoire d’Architectures Moléculaires et Matériaux Nanostructurés<br />
Institut Charles Gerhardt, UMR 5253 – ENSCM<br />
8 rue de l’Ecole Normale - 34296 Montpellier cedex 5 – France<br />
Short synthetic methods for the preparation of highly functionalized compounds are still a<br />
challenge for organic chemists. Thus, with respect to their productivity, convergence and atom<br />
economy, multicomponent and organocatalytic reactions occupy an outstanding position, deserving<br />
our interest in the field of organophosphorus chemistry.According to the nature of the nucleophilic<br />
trivalent phosphorus reagents, we can drive reactions towards organocatalytic systems 1,2 or tandem<br />
multicomponent processes leading to a wide variety of extremely diversified structures.<br />
R1 = Ph<br />
R2 , R3 R<br />
= NEt2 R = p-CF3-C6H4 Yield 30-33%<br />
1 = Ph<br />
R2 , R3 = NEt2 R = p-CF3-C6H4 Yield 30-33%<br />
R1 = R2 = Ph<br />
R3 R<br />
= NEt2 Yield 56%<br />
1 = R2 = Ph<br />
R3 = NEt2 Yield 56%<br />
R<br />
EWG<br />
O<br />
PPhNEt 2<br />
R= Ar ou alkyl<br />
R<br />
R<br />
OH<br />
EWG<br />
O<br />
1 = Ph<br />
R2 = Ph, OEt<br />
R3 R= Ar ou alkyl<br />
R<br />
= NEt2 , OEt<br />
R<br />
OH<br />
* EWG<br />
*<br />
O<br />
Yield 11-81%<br />
1 = Ph<br />
R2 = Ph, OEt<br />
R3 = NEt2 , OEt<br />
*<br />
*<br />
Yield 11-81%<br />
OH<br />
PPh 2<br />
Ar<br />
OH<br />
CO 2 Et<br />
O<br />
PPh 2<br />
CO2Me R<br />
Cl<br />
PPh3 _<br />
⊕<br />
OH<br />
Cl<br />
CN<br />
R<br />
Cl<br />
PPh3 _<br />
PR<br />
⊕<br />
1R2R3 = PPh3 R = p-CF3-C6H4 Yield 48%<br />
PR1R2R3 CO2Me R<br />
Cl<br />
PPh3 = PPh3 R = p-CF3-C6H4 , p-MeC6H4 p-NO2-C6H4 , Ph<br />
Yield 54-81%<br />
_<br />
⊕<br />
OH<br />
Cl<br />
CN<br />
R<br />
Cl<br />
PPh3 _<br />
PR<br />
⊕<br />
1R2R3 = PPh3 R = p-CF3-C6H4 Yield 48%<br />
PR1R2R3 = PPh3 R = p-CF3-C6H4 , p-MeC6H4 p-NO2-C6H4 , Ph<br />
Yield 54-81%<br />
P R2 R 1<br />
晻<br />
P R2 R 1<br />
晻<br />
P R2 R 1<br />
晻<br />
R 3<br />
R 3<br />
R 3<br />
139<br />
R 1<br />
R 1<br />
N<br />
R 1<br />
R 1<br />
O<br />
(EWG = CO 2 Me, CO 2 Et, COMe, CN)<br />
EWG<br />
PR3 = P(n-Bu) 3<br />
R1 EWG<br />
PR3 = P(n-Bu) 3<br />
R = H, Et<br />
Yield 4-57%<br />
1 = H, Et<br />
Yield 4-57%<br />
X H<br />
X<br />
X<br />
N<br />
EWG<br />
R 1 R HN<br />
1 HN<br />
O<br />
S<br />
O R1<br />
O R1<br />
EWG<br />
PR 3 = PPh 3<br />
X = C, CH, N<br />
H<br />
Yield 16-94%<br />
OH<br />
EWG<br />
PR3 = P(n-Bu) 3<br />
R = H, Me<br />
R1 PR3 = P(n-Bu) 3<br />
R = H, Me<br />
R = H, OMe<br />
Yield 34-59%<br />
1 = H, OMe<br />
Yield 34-59%<br />
PR 3 = PPh 3<br />
R = Ph<br />
Yield 7-30%<br />
PR3 = P(n-Bu) 3<br />
R1 PR3 = P(n-Bu) 3<br />
R = H, Me<br />
Yield 33-56%<br />
1 = H, Me<br />
Yield 33-56%<br />
The influence of subtituents on the phosphorus atom in combination with the appropriate starting<br />
materials was completely rationalized allowing to predict the course of the reactions.<br />
Reference<br />
[1]. D. Virieux*, A.-F. Guillouzic, H.-J. Cristau, Tetrahedron, 2006, 62, 3710-3720.<br />
[2]. D. Virieux*, A.-F. Guillouzic, A. Fruchier, Heteroatom Chem., 2007, in press.
O-39<br />
BISDITHIOPHOSPHONIC ACIDS IN METAL COMPLEX FORMATION REACTIONS<br />
Il’yas S. Nizamov 1, 2 , Yevgeniy M. Martiyanov 1 , Il’nar D. Nizamov 3 , Alfiya N. Gataulina 1 , Rafael A. Cherkasov 1<br />
1<br />
Kazan State University, Kremlievskaya Str., 18, Kazan, 420008, Russia,e-mail: Ilyas.Nizamov@ksu.ru<br />
Ilyas.Nizamov@ksu.ru<br />
2<br />
A.E. Arbuzov Institute of Organic and Physical Chemistry,Arbuzov Str., 8, Kazan, 420088, Russia,<br />
3 Tatar State Humanitarian Pedagogical University, Tatastan Str. 2, Kazan, 420021, Russia<br />
There is a considerable interest in metal derivatives of phosphorus thioacids due to their use in<br />
metal complex catalysis. We have previously prepared zinc and nickel derivatives of<br />
bisdithiophosphonic acids obtained on the basis of 2,4-dimethyl-1,3,2,4-dithiadiphosphetane-2,4-disulfide<br />
[1]. In continuation of this work we have involved in the reactions of<br />
formation of bisdithiophosphonic acids such 1,3,2,4-dithiadiphosphetane-2,4-disulfides as<br />
4-ethoxyphenyl, 3,5-di-tret-butyl-4-hydroxyphenyl and 4-phenoxyphenyl homologues of<br />
Lawesson’s reagent and such diols as 1,3-propanediol, 1,4-butandiol, neopentyl glycol,<br />
bis(2-hydroxyethyl)sulfide and tri(ethylene glycol). These reactions proceed at 50-60 o C for 1-2 h in<br />
benzene solutions. The 31 P NMR spectra of bisdithiophosphonic acids obtained show singlets at P<br />
86-87 ppm.<br />
Ar-P P-Ar + X<br />
OH<br />
OH<br />
50-60<br />
Ar-P<br />
SH<br />
O<br />
HS<br />
O<br />
P-Ar<br />
X<br />
o S<br />
S<br />
S<br />
S<br />
C, 1-2 h<br />
C<br />
6<br />
H<br />
6<br />
S S<br />
Ar = 4-MeOC<br />
6<br />
H<br />
4<br />
, 4-EtOC<br />
6<br />
H<br />
4<br />
, HO<br />
,<br />
; X = , , ,<br />
140<br />
O O<br />
To obtain metal complexes of bisdithiophosphonic acids we have used two approaches. One of<br />
them involves the previous in situ preparation of the corresponding bisammonium salts of these<br />
thioacids ( P 107 ppm) and their following subsitution reaction with Nickel(II) nitrate or zinc<br />
chloride. Other method of synthesizing similar complexes was based on the refluxing of mixture of<br />
bisdithiophosphonic acids with metal oxides such as Cobalt(II), Copper(II), Nickel(II) and Zinc<br />
oxides in benzene suspensions for 11-25 h with evaluation of water formed. Metal complexes of<br />
bisdithiophosphonic acids were isolated as yellow powders. The 31 P NMR spectra of these<br />
complexes reveal signals at P 96-104 ppm. In the IR spectra bands of valence vibrations of the<br />
-1<br />
P=S and P-S bonds of complexes obtained are mixed and revealed in the region of 560 cm that<br />
suggest a chelating behavior of the ligands.<br />
Reference<br />
[1] Kutyrev G.A., Korolev O.S., Cherkasov R.A., Pudovik A.N., Safiullina N.R., Yarkova E.G., Lebedeva O.Ye., Zh.<br />
Obsch. Khim. (Russ.), 1986, 56, 1227.
O-40<br />
SYNTHESIS AND BIOLOGICAL EVALUATION OF A HIGHLY REACTION Zn(II)<br />
MONONUCLEAR COMPLEX FOR PHOSPHODIESTER CLEAVAGE<br />
Chao Li a , Ren-Zhong Qiao a,b *, Yu-Fen Zhao b *<br />
a b<br />
Department of Pharmaceutical Engineering, Beijing University of Chemical Technology, Beijing 100029, China. The<br />
Key Laboratory of Bio-organic Phosphorus Chemistry and Chemical Biology, Ministry of Education,<br />
There is an increasing interest in the realisation of small and robust artificial DNA hydrolytic<br />
agents for their potential applications not only in molecular biology but also in the development of<br />
new drugs, recently. [1] Many nucleases are metalloenzymes. Among the physiologically relevant<br />
metal ions, Zn (II) is probably the best suited metal ion for the development of artificial<br />
metallonucleases. [2] However, its reactivity is somewhat lower than that of the other commonly<br />
employed transition-metal ions, [3] especially mononuclear Zn (II) complexes. [4] We expect that the<br />
catalytic activity of the small molecular Zn (II) complexes can be enhanced through some<br />
modificators. Here, we first report synthesis, characterization and biological evaluation of a novel<br />
class of Zn (II) complexes which contain oligopolyamide and bis(2-benzimidazolylmethyl)amine<br />
conjugated by flexible linker. In a detailed set of experiments, we find that the novel Zn (II)<br />
complexes can hydrolyze duplex DNA efficiently, bearing some selectivity.<br />
O 2 N<br />
N<br />
CH 3<br />
O<br />
H<br />
N<br />
N<br />
CH 3<br />
O<br />
n<br />
H<br />
N<br />
n=1,2 or 3<br />
O<br />
HN<br />
N<br />
HN<br />
N<br />
N<br />
Zn ClO 4<br />
ClO 4<br />
Figure1. The novel nucleases and gel electrophoresis of cleavage reaction of pUC18 DNA<br />
We found optimal condition of cleavage reaction through a series of optimize experiment,<br />
including pH value, concentration, time and temperature. The preliminary biological activity studies<br />
showed that the efficient hydrolysis of plasmid DNA was observed at lower reaction concentration<br />
and short time. In contrast to the complexes without oligopolyamide, the minimum of reaction<br />
concentration and time decreased apparently in the presence of the novel Zn (II) complex.<br />
Interestingly, at a high reaction concentration (1.2mM), Zn (II) complex converted the plasmid<br />
DNA to a new band.<br />
References<br />
1. Livieri, M.; Mancin, F.; Tonellato, U.and Chin, J. Chem. Commun., 2004, 2862-2863.<br />
2. Boseggia, E.; Gatos, M.; Lucatello, L.; Mancin, F.; Moro, S.; Palumbo, M.; Sissi, C.; Tecilla, P.; Tonellato, U.and<br />
Zagotto, G. J. Am. Chem. Soc. 2004, 126, 4543-4549.<br />
3. Hegg, E. L.; Burstyn, J. N. Coord. Chem. ReV. 1998, 173, 133-165.<br />
4. Basile, L. A.; Raphael, A. L.; Barton, J. K. J. Am. Chem. Soc. 1987, 109, 7550-7551. Project supported by the<br />
National Natural Science Foundation of China (No. 20572008).<br />
141<br />
FormⅡ<br />
FormⅢ<br />
FormⅠ<br />
new band<br />
ctrl 0.05mM 2.2mM<br />
4000<br />
3500<br />
3000<br />
2500<br />
2000<br />
1500<br />
1000<br />
500
O-41<br />
COMPLEXES OF CROWN-CONTAINING N-PHOSPHORYLTHIOUREAS<br />
WITH Ni(II) CATION<br />
F. D. Sokolov*, S. V. Baranov, N. G. Zabirov, R. A. Cherkasov<br />
Kazan State University, Russia, Kazan, *E-mail: felix.sokolov@ksu.ru<br />
Previously we have found, that interaction of N-phosphorylthioureas of common formula<br />
RNHC(S)NHP(O)(OPr-i)2 (HL; R = Alk, Ar) with Ni(II) and Pd(II) cations affords square-planar<br />
M (II) L2 chelates, having unusual 1,3-S,N-coordination of the ligands. The realization of alternative<br />
coordination modes (1,3-S,N- vs. 1,5-S,O-) takes place due to higher degree of negative charge<br />
delocalization in SCN-fragment in comparison with phosphorous-containing moiety SCNPO.<br />
Strong field of conjugated 1,3-S,N-ligands leads to a gain in energy for square-planar complexes of<br />
Ni(II) and Pd(II) cations. Accessory factor of 1,3-S,N-chelates stabilization is a forming of strong<br />
intramolecular H-bonds RNH ... O=P.<br />
O H<br />
R'<br />
P<br />
N<br />
R' N<br />
H S<br />
O<br />
O<br />
O<br />
O<br />
O<br />
O<br />
O<br />
O<br />
142<br />
O<br />
O<br />
R'<br />
R'<br />
O<br />
P<br />
N<br />
H<br />
N<br />
S M S<br />
N<br />
H<br />
N R'<br />
P<br />
O R'<br />
This work is devoted to the coordination properties of analog containing benzo-15-crown-5<br />
moiety. Changing of the coordination mode form from 1,3-S,N in Ni (II) L2 chelates to 1,5-O,S in<br />
six-coordinated complexes Ni(Dn)2L2, formed by interaction with donor ligands (Dn for example,<br />
pyridine) makes it interesting as а base for molecular triggers design.<br />
Reference<br />
[ 1 ] F. D. Sokolov, N. G. Zabirov, L. N. Yamalieva, V. G. Shtyrlin, Ruslan R. Garipov, V. V. Brusko, A.Yu. Verat, S. V.<br />
Baranov, Piotr Mlynarz, T.Glowiak, H.Kozlowski // Inorganica Chimica Acta. – 2006 .- V. 359, N. 7. – P. 2087–2096.<br />
O<br />
O<br />
O<br />
O<br />
O
O-42<br />
NOVEL HETEROCYCLIC P-LIGANDS: SYNTHESIS AND APPLICATION<br />
IN Pt(II) COMPLEXES<br />
György Keglevich, 1 Andrea Kerényi, 1 Melinda Sipos, 1 Annamária Balassa, 1<br />
Beatrix Mayer 1 and Tamás Körtvélyesi 2<br />
1<br />
Department of Organic Chemical Technology, Budapest University of Technology and Economics, H-1521<br />
Budapest,Hungary 2 Department of Physical Chemistry, University of Szeged, H-6701 Szeged, Hungary<br />
We aimed at the development of special P-ligands. In one part of our project,<br />
1,2,3,6-tetrahydrophopshinine oxides with an exocyclic P-function (e.g. 1) were prepared by the<br />
AlMe3-mediated addition of >P(O)H species on the double-bond of 1,2-dihydrophosphinine oxides<br />
in a diastereoselective manner. The P-heterocycles (e.g. 1) were then subjected to catalytic<br />
hydrogenation to give 1,2,3,4,5,6-hexahydrophosphinine oxides (e.g. 2) again diastereoselectively.<br />
The stereostructure and conformation of the products (e.g. 1 and 2) was evaluated on the basis of<br />
theoretical calculations and spectroscopy. Double deoxygenation of 1 and 2 resulted in<br />
diphosphines (3 and 4, respectively) that were suitable bidental P-ligands to form chelate complexes<br />
5 and 6, respectively in reaction with (PhCN)2PtCl2.<br />
O<br />
Ph 2P<br />
O<br />
Ph 2P<br />
Cl<br />
P<br />
O Ph<br />
1<br />
H 2<br />
O<br />
P<br />
2<br />
Ph<br />
Me<br />
Pd/C<br />
Me<br />
Cl3SiH pyridine<br />
Cl3SiH pyridine<br />
Ph 2P ..<br />
Ph 2P ..<br />
Cl<br />
.. P<br />
Ph<br />
3<br />
.. P<br />
Ph<br />
4<br />
143<br />
Me<br />
Me<br />
(PhCN) 2PtCl 2<br />
ArH<br />
(PhCN) 2PtCl 2<br />
In another line of this research, achiral and chiral dibenzo[c.e][1,2]oxaphosphorins with different<br />
P-functions (8) were synthesized that were converted to the corresponding platinum (II) complexes<br />
(9). Ring opening of a dibenzooxaphosphorin (10) afforded<br />
1-hydroxy-1'-diphenylphosphino-biphenyl (11) that was used in complexation with (PhCN)2PtCl2 to<br />
furnish complex 12. A bidental P-ligand, as well as its complex were also developed.<br />
7<br />
O<br />
P<br />
Cl<br />
PhMgBr<br />
O<br />
P<br />
Ph<br />
YH<br />
N<br />
ArH<br />
1) PhMgBr<br />
2) H2O 10 11<br />
8<br />
O<br />
P<br />
Y<br />
Y = NEt2, H<br />
OH<br />
PPh2 (PhCN) 2PtCl 2<br />
NH<br />
ArH<br />
Me<br />
Ph ,<br />
Me<br />
(PhCN) 2PtCl 2<br />
ArH<br />
ArH<br />
O<br />
H<br />
Me<br />
Me<br />
Cl<br />
Cl<br />
Ph 2P<br />
Pt<br />
Cl<br />
Ph 2P<br />
Pt<br />
Cl<br />
Cl<br />
P<br />
5<br />
P<br />
6<br />
Ph<br />
Ph<br />
Cl Cl<br />
O<br />
Pt<br />
O<br />
P<br />
P<br />
Y Y<br />
9<br />
Me<br />
Me<br />
Ph<br />
P Cl<br />
Ph<br />
OH<br />
Cl<br />
Pt<br />
12<br />
HO<br />
P<br />
Ph<br />
Ph
O-43<br />
DoM CHEMISTRY OF PHOSPHINIC AMIDES: SYNTHESIS OF LIGANDS AND THEIR<br />
APPLICATION IN ROBUST HIGH PERFORMANCE CATALYSTS<br />
D. Bradley G. Williams<br />
Department of Chemistry, University of Johannesburg, PO Box 524<br />
Auckland Park, 2006, South Africa. dbgw@rau.ac.za<br />
Ligands are responsible for the selectivity of transition metal catalysed reactions. 1 Ligand design<br />
is therefore an integral part in the improvement in reactivity and selectivity of metal catalysed<br />
reactions.<br />
Synthesis and catalysis<br />
Directed ortho-metallation (DoM) 2 was used to synthesise a variety of ortho-substituted<br />
phosphinic amides (2). With R2PCl as the electrophile, the resulting ligand showed excellent<br />
activity in Pd catalysed Suzuki reactions with deactivated aryl bromides and some aryl chlorides.<br />
Further manipulation<br />
These substituted phosphinic amides were hydrolysed with HCl (aq), chlorinated (SOCl2) and<br />
reacted with a range of aryl Grignard reagents to form highly functionalised unsymmetrical triaryl<br />
phosphine oxides. These oxides can be reduced to the active phosphine ligands using trichlorosilane,<br />
providing a facile route to highly functionalised P-chiral ligands.<br />
Ph 2P Cl<br />
E = electrophile<br />
HNR2<br />
H 2O 2<br />
O<br />
P<br />
NR 2<br />
s-BuLi<br />
Electrophile<br />
144<br />
O<br />
P<br />
NR 2<br />
E<br />
1. HCl (aq)<br />
2. SOCl2 3. R`MgX<br />
1 2 3<br />
Ligands as catalysts<br />
for E = PCy 2 and PPh 2<br />
Catalysis with<br />
unsymmetrical<br />
phosphine<br />
O<br />
P<br />
R`<br />
E<br />
HSiCl 3<br />
R<br />
P E<br />
The synthesis of ligands 2, their conversion into unsymmetrical ligands 4, and the application of<br />
these ligands in catalysed transformations, with surprising results, will be discussed.<br />
Reference<br />
[1]van Leeuwen, P. W. N. M.; Homogeneous catalysis, Kluwer Academic Publishers, London, 2003.<br />
[2]Sniekus, V.; Chem Rev., 1990, 90, 879<br />
4
O-109<br />
DESIGN, SYNTHESIS, AND APPLICATION OF PHOSPHAALKENES TO UNIQUE<br />
PALLADIUM AND GOLD CATALYSTS<br />
Shigekazu Ito, a Matthias Freytag, a Hongze Liang, a Katsunori Nishide, a Masaaki Yoshifuji a,b<br />
a<br />
Department of Chemistry, Graduate School of Science, Tohoku University,Aoba, Sendai 980-8578,<br />
Japan<br />
b<br />
Department of Chemistry, The University of Alabama, Tuscaloosa 35487-0336, USA.<br />
Phosphaalkenes bearing P=C double bond(s) display several intriguing properties affording novel<br />
metal-complexes of unprecedented catalytic activities. We demonstrate here novel properties of<br />
1,3-diphosphapropenes in relation to palladium chemistry and of phosphaalkene-gold complexes<br />
showing specific catalytic activity. A stable 2-silyl-1,3-diphosphapropene 1 was prepared by<br />
employing a 1-silyl-2-phosphaethenyllithium and its structure has already been discussed based on<br />
the 31 P NMR spectroscopic, X-ray crystallographic, and theoretical data. The unsymmetrical P2<br />
ligand 1 afforded the corresponding dichloropalladium(II) chelate complex which reveals<br />
considerable catalytic activity in Sonogashira cross-coupling reactions [1].<br />
Taking the π-electron accepting property of P=C double bond into account, phosphaalkenes are<br />
expected as a suitable ligand for gold catalysts which might show high electrophilic affinity for<br />
unsaturated carbon-carbon bonds. Indeed, we found that chlorogold(I) complexes bearing<br />
phosphaalkenes 2–4 catalyze cycloisomerization of 1,6-enyne derivatives without activation by any<br />
silver additives, indicating that the P=C structure, the aurophilic gold-gold contact, and the sulfur<br />
atom may increase electrophilicity of the gold center. The gold-gold contact appeared to control<br />
conformation of the ligand 2. Additionally, we employed some 1,3-diphosphapropenes for<br />
formation of gold complexes which showed catalytic activity in a couple of intriguing molecular<br />
transformations [2].<br />
Mes*<br />
P<br />
SiMe 3<br />
PPh 2<br />
Mes*<br />
P<br />
Me<br />
P<br />
Mes*<br />
Me Mes* P P Mes*<br />
1<br />
2<br />
Mes* = 2,4,6-t-Bu3C6H2 3<br />
Reference<br />
[1] S. Ito, K. Nishide, M. Yoshifuji, Organometallics 2006, 25, 1424.<br />
[2] M. Freytag, S. Ito, M. Yoshifuji, Chem. Asian J. 2006, 1, 693.<br />
145<br />
Ph Ph<br />
Mes*<br />
P<br />
4<br />
SMe<br />
SMe
P-18<br />
NOVEL 36- AND 38-MEMBERED P,N-CONTAINING CYCLOPHANES WITH LARGE<br />
HYDROPHOBIC CAVITIES<br />
D.V.Kulikov a , A.S.Balueva a , A.A.Karasik a , A.V.Kozlov a , Sh.K.Latypov a , O.N.Kataeva a , P.Lönnecke b ,<br />
E.Hey-Hawkins b , O.G.Sinyashin a .<br />
a<br />
A. E. Arbuzov Institute of Organic and Physical Chemistry, Russian Academy of Sciences, Arbuzov str. 8, Kazan,<br />
Russia, 420088. E-mail: culdim@mail.ru<br />
b<br />
Institut für Anorganische Chemie der Universität Leipzig, Johannisallee 29, D-04103 Leipzig, Germany. E-mail:<br />
hey@rz.uni-leipzig.de<br />
The novel 36- and 38-membered cage P,N-containing cyclophanes 1a-d and 2 a-c were obtained<br />
in good yields in the course of the covalent self-assembly processes [1,2] in three-component<br />
systems: primary phosphine-formaldehyde-diamine with the spacers containing three p,m,p- or<br />
p,p,p-phenylene rings linked by one-atom bridges.<br />
R<br />
O<br />
O<br />
P<br />
N<br />
N<br />
P<br />
O<br />
O<br />
R<br />
2<br />
O<br />
O<br />
DMF, 110 C o<br />
NH 2<br />
NH 2<br />
4 R-PH2 +<br />
8 H2CO H 2N<br />
H 2N<br />
146<br />
Me<br />
Me<br />
DMF or TolH<br />
110 C o<br />
Me<br />
Me<br />
R<br />
P<br />
N<br />
N Me<br />
R<br />
P<br />
N<br />
N<br />
1 a-d<br />
P<br />
R<br />
R = (a), (b), (c), CH2 (d)<br />
Fe<br />
Me Me<br />
2 a-c<br />
The cavity of 1a may be described as two halves of a truncated rhombohedral prism, which are<br />
moved apart by the m-dioxiphenylene fragments, whereas the macrocycle 2c shows a helical<br />
structure in crystal; the volumes of internal hydrophobic cavities are about 130-140 Å 3 .<br />
1a 2c<br />
Cyclophanes 1a and 2c form inclusion complexes with DMF and benzene respectively; one of<br />
the benzene molecules is encapsulated by the cavity of 2c both in crystal and in benzene solution.<br />
2<br />
R<br />
P<br />
Me<br />
Me<br />
Me<br />
Me<br />
Me<br />
N<br />
R<br />
P<br />
P<br />
R<br />
N
Financial support from Volkswagen Foundation, RFBR (No. 06-03-32754-a), Russian Science<br />
Support Foundation and from President’s of RF Grant for the support of leading scientific<br />
schools (No. 5148.2006.3) is gratefully acknowledged.<br />
References:<br />
1. A.S.Balueva, R.M.Kuznetsov, S.N.Ignat’eva et al.. Dalton Trans., 2004, 442<br />
2. R.N.Naumov, A.A.Karasik, O.G.Sinyashin et al. Dalton Trans., 2004, 357.<br />
147
P-20<br />
PHOSPHORUS FUNCTIONALISED CARBENES: SYNTHESIS AND<br />
COORDINATION PROPERTIES<br />
D.Morvan, J.J.Yaouanc, P.A.Jaffrès, J.F.Capon, P.Schollhammer, J.Talarmin, F.Gloaguen.<br />
CEMCA, UMR CNRS 6521, Faculté des sciences et techniques, Université de Bretagne Occidentale, 6 avenue le<br />
Gorgeu, 29238 Brest (France).<br />
Metal complexes with N-Heterocyclic carbene (NHC) ligands are widely used in organometallic<br />
chemistry1. NHC are well-known to be a good donor groups and the incorporation of functionality<br />
is possible on the nitrogen atoms. We are interested in the synthesis of functionalised NHC with<br />
functionality offering a new coordination centre or possessing hemilabile properties. In particular,<br />
the functionalisation of NHC with phosphonate (A) leads us to develop original methods for their<br />
synthesis. The organometallics complexes, incorporating the functionalised NHC, has been<br />
synthesised following two pathways: 1- by using the silver carbene as intermediate2; 2- by using<br />
the free carbene. According to the first method, several rhodium complexes has been synthesised<br />
and characterised. The use of these rhodium complexes (B), as precursor of active catalysts for C-C<br />
coupling, is still under investigation. Beside the chemistry of these rhodium complexes, we have<br />
designed models of hydrogenase3a possessing either a phosphite (complex C) or a carbene ligand3b<br />
(D). These complexes have been fully characterised by X-ray diffraction and by electrochemistry<br />
methods. These results encourage us to study model of hydrogenase having functionalised NHC as<br />
ligand.<br />
References<br />
[1](a) Bourissou, D.; Guerret, O.; Gabbaï, F. P. ; Bertrand G. Chem. Rev. 2000, 100, 39. (b) Herrmann, W. A.Angew.<br />
Chem. Int. Ed. 2002, 41, 1290. (c) Arduengo, A.J. III.Acc. Chem. Res. 1999, 32, 913.<br />
[2] Wang, H. M. J.; Lin I. J. B. Organometallics 1998, 17, 972.<br />
[3] (a) Capon, J.-F.; Gloaguen, F.; Schollhammer, P.; Talarmin, J.; J. Coord. Chem. Rev. 2005, 249, 1664. (b)Capon,<br />
J.-F.; El Hassnaoui, S.; Gloaguen, F.; Schollhammer, P.; Talarmin, J. ; Organometallics ; 2005; 24(9);2020-2022.<br />
148
P-22<br />
EXTRACTION PROPERTIES OF 1,10-DA-18-CROWN-6, MODIFIED BY EXOCYCLYC<br />
CHELATING GROUPS<br />
Felix D. Sokolov,* Maria G. Babashkina, Damir A. Safin,<br />
Nail G. Zabirov, Rafael A. Cherkasov<br />
A.M. Butlerov Chemical Institute, Kazan State University, 420008, Kremlevskaya str. 18, Kazan, Russia; e-mails:<br />
felix.sokolov@ksu.ru<br />
Modification of macrocycles with pendant chelate units affords new types of selective extraction<br />
agents and ion receptors. Extraction of potassium picrate from D2O by CDCl3 solution of a complex<br />
[{Cu(PPh3)2}2L] leads to almost quantitative formation of complex [K{Cu(PPh3)2}2L] + Pic - . The<br />
extraction is insignificant for Li + and Na + cations and formation of the complexes can not be fixed<br />
by NMR method. Crown-containing thiourea H2L shows no selectivity in the similar conditions.<br />
O<br />
O<br />
P NH O O<br />
S C N N<br />
S O O<br />
H 2L<br />
O<br />
HN P<br />
C<br />
S<br />
S<br />
O<br />
149<br />
Ph Ph<br />
O<br />
O<br />
P N O O<br />
Ph<br />
S<br />
P<br />
Cu<br />
Ph<br />
P<br />
Ph<br />
Ph<br />
S C N N C S<br />
Cu<br />
S<br />
Ph<br />
P<br />
Ph<br />
Ph P<br />
PhPh<br />
Ph<br />
O O<br />
Cu(PPh3) 2L<br />
N P<br />
O<br />
O<br />
This research was supported by BRHE 2004 (№ Y2-C-07-02), RFBR (03-03-32372-a,<br />
03-03-96225-r2003tatarstan_a) grant programs.
P-26<br />
CHIRAL SPIRO MONOPHOSPHITES FOR Rh-CATALYZED ASYMMETRIC<br />
ADDITION OF ARYLBORONIC ACIDS TO ALDEHYDES, KETONES AND IMINES<br />
Hai-Feng Duan, Shou-Fei Zhu, Yi-Xia Jia, Qi-Lin Zhou*<br />
State Key Laboratory and Institute of Elemento-organic Chemistry, Nankai University<br />
Tianjin 300071, China.<br />
The transition-metal-catalyzed asymmetric addition of aryl organometallic reagents to aldehydes,<br />
ketones and imines is a very attractive research topic because the products, chiral alcohols and<br />
amines, are important intermediates for the synthesis of biologically and pharmceutically active<br />
compounds. However, the highly enantioselective examples in this significantly useful reaction are<br />
quite limited. The arylboronic acids are ideal organometallic reagents for this important<br />
transformation due to their low cost, low toxicity, stability toward air and moisture, and tolerance to<br />
a variety of functional groups. We herein disclose the highly enantioselective addition of<br />
arylboronic acids to aldehydes, ketones and imines catalyzed by the rhodium complexes of spiro<br />
monophosphite ligands 1. This approach extends the scope of the asymmetric addition of<br />
arylboronic acids and provides a practical access to the synthesis of enantiomer-enriched alcohols<br />
and amines.<br />
OH<br />
HO<br />
R<br />
O<br />
R'<br />
+<br />
R = aryl, alkenyl<br />
R' = H, CF 3, CO 2Bn<br />
Ar 1<br />
1.PCl 3 /NEt 3<br />
2. ROH/NEt 3<br />
(S)-SPINOL (S)-1<br />
ArB(OH) 2<br />
N Ts + Ar 2 B(OH) 2<br />
O<br />
P<br />
O<br />
R<br />
[Rh] (1 mol%)<br />
(S)-1e (2.1 mol%)<br />
KF (2 equiv)<br />
Toluene/H2O (1/1), 0°C<br />
[Rh] (3 mol %)<br />
(S)-1c (6 mol%)<br />
KF (4 equiv)<br />
Toluene/H 2O (1/1), 35 °C<br />
150<br />
a: R = Et<br />
b: R = t Bu<br />
c: R = Ph<br />
d: R = 1-Naphthy<br />
e: R = 2-Naphthy<br />
OH<br />
*<br />
R Ar<br />
R'<br />
up to 93% ee<br />
Ar 1<br />
Ar 2<br />
N<br />
H<br />
Ts<br />
up to 96% ee<br />
f: R = 4-MeOPh<br />
g: R = 4-CF 3Ph<br />
h: R = 2,6-DiMePh<br />
i: R = 2-MeOPh<br />
j: R = Phenanthrene<br />
Acknowledgment: We thank the National Natural Science Foundation of China, and the Ministry of<br />
Education of China for financial support.<br />
References:<br />
(1) Hayashi, T.; Yamasaki, K. Chem. Rev. 2003, 103, 2829.<br />
(2) Duan, H.-F.; Xie, J.-H.; Shi, W.-J.; Zhang, Q.; Zhou, Q.-L. Org. Lett. 2006, 8, 1479.<br />
(3) Duan, H.-F.; Jia, Y.-X.; Wang, L.-X.; Zhou, Q.-L. Org. Lett. 2006, 8, 2567.
P-59<br />
SYNTHESIS OF O,O-DIALKYL-2-OXO-2-(4-(SELENOMOR<br />
PHOLINOSULFONYL)PHENYLAMINO)ETHYLPHOSPHONATE<br />
Fang Wang B , Liming Hu A *, Xiaopeng Li A , Xuemei Xu A<br />
a<br />
College of Life Sciences and Bioengineering, Beijing University of Technology, Beijing 100022, China;<br />
b<br />
College of Science Beijing University of Chemical Technology,Beijing 100029, China<br />
A series of O,O-dialkyl 2-oxo-2-(4-(selenomorpholinosulfonyl)phenylamino)ethylphosphonate<br />
were synthesized by reactions of 2-chloro-N-(4-(selenomorpholinosulfonyl)phenyl)acetamide with<br />
dialkyl phosphite in the presence of sodium hydride. The structure of all new compounds has been<br />
confirmed by 1 H NMR, 31 P NMR, IR, Mass spectroscopy and elemental analyses.<br />
Science selenium was found to be an active center of glutathione peroxidase(GSH-Px), Which<br />
can catalyze and decompose liquid hydroperoxide or hydrogen peroxide, the bioactivity of selenium<br />
has developed rapidly 1-2 . Selenoorganic compound, such as Ebselen, was found the function against<br />
biological damage caused in vivo by reactive hydroperoxides 3-7 . This increased a striking interest in<br />
developing new selenoorganic compound for therapy. They have been potentially used in a variety<br />
of fields varying from medicinal to agriculture application 8-10 . Recently, the antibiotic activity and<br />
plant systemic activity of selenomorpholine derivatives were studied 11-12 . In our pervious work,<br />
many selenoorganic compounds were synthesized and exhibited excellent pharmacological<br />
effect 13-15 . In this work, we present synthesis of O,O-dialkyl-2-oxo-2-<br />
(4-(selenomorpholino-sulfonyl)phenylamino)ethylphosphonate.<br />
Reference<br />
[1] Ji, Xiuling; Hu, Weixuan; Cheng, Jinping; et al Ecotoxicology and Environmental Safety. 64(2), 171-177(2006)<br />
[2] Bansal, M. P.; Kaur, Parminder. Indian Journal of Experimental Biology. 43(12), 1119- 1129 (2005)<br />
[3] Pearson, Jason K.; Boyd, Russell J. Journal of Physical Chemistry A. 110(28), 8979- 8985(2006)<br />
[4] Filipovska, Aleksandra; Kelso, Geoffrey F.; Brown, Stephanie E. et al. Journal of Biological Chemistry.<br />
280(25),24113-24126 (2005)<br />
[5] Giurg, M.; Wojtowicz, H.; Mlochowski, J. Polish Journal of Chemistry. 76(4), 537-542(2002)<br />
[6] Sattler, Wolfgang; Maiorino, Matilde; Stocker, Roland. Archives of Biochemistry and Biophysics. 309(2),<br />
214-21(1994)<br />
[7] Maiorino, Matilde; Roveri, Antonella; Coassin, Mariagrazia. et al. Biochemical Pharmacology. 37(11),<br />
2267-71(1988)<br />
[8] Smrkolj, Polona; Germ, Mateja; Kreft, Ivan. et al. Journal of Experimental Botany. 57(14), 3595-3600(2006)<br />
[9] Robbins, Rebecca J.; Keck, Anna-Sigrid; Banuelos, Gary. et al. Journal of Medicinal Food. 8(2), 204-214 (2005)<br />
[10] Pappas, Athanasios C.; Karadas, Filiz; Surai, Peter F.et al. Journal of Trace Elements in Medicine and Biology.<br />
20(3), 155-160(2006)<br />
151
P-105<br />
SYNTHESIS OF CHIRAL SPIROBITETRALINE PHOSPHORAMIDITE LIGANDS<br />
Hai-Feng Duan, Shou-Fei Zhu, Yi-Xia Jia, Qi-Lin Zhou*<br />
State Key Laboratory and Institute of Elemento-organic Chemistry, Nankai University<br />
Tianjin 300071, China.<br />
The transition-metal-catalyzed asymmetric addition of aryl organometallic reagents to aldehydes,<br />
ketones and imines is a very attractive research topic because the products, chiral alcohols and<br />
amines, are important intermediates for the synthesis of biologically and pharmceutically active<br />
compounds. However, the highly enantioselective examples in this significantly useful reaction are<br />
quite limited. The arylboronic acids are ideal organometallic reagents for this important<br />
transformation due to their low cost, low toxicity, stability toward air and moisture, and tolerance to<br />
a variety of functional groups. We herein disclose the highly enantioselective addition of<br />
arylboronic acids to aldehydes, ketones and imines catalyzed by the rhodium complexes of spiro<br />
monophosphite ligands 1. This approach extends the scope of the asymmetric addition of<br />
arylboronic acids and provides a practical access to the synthesis of enantiomer-enriched alcohols<br />
and amines.<br />
OH<br />
HO<br />
R<br />
O<br />
R'<br />
+<br />
R = aryl, alkenyl<br />
R' = H, CF 3, CO 2Bn<br />
Ar 1<br />
1.PCl 3 /NEt 3<br />
2. ROH/NEt 3<br />
(S)-SPINOL (S)-1<br />
ArB(OH) 2<br />
N Ts + Ar 2 B(OH) 2<br />
O<br />
P<br />
O<br />
R<br />
[Rh] (1 mol%)<br />
(S)-1e (2.1 mol%)<br />
KF (2 equiv)<br />
Toluene/H2O (1/1), 0°C<br />
[Rh] (3 mol %)<br />
(S)-1c (6 mol%)<br />
KF (4 equiv)<br />
Toluene/H 2O (1/1), 35 °C<br />
152<br />
a: R = Et<br />
b: R = t Bu<br />
c: R = Ph<br />
d: R = 1-Naphthy<br />
e: R = 2-Naphthy<br />
OH<br />
*<br />
R Ar<br />
R'<br />
up to 93% ee<br />
Ar 1<br />
Ar 2<br />
N<br />
H<br />
Ts<br />
up to 96% ee<br />
f: R = 4-MeOPh<br />
g: R = 4-CF 3Ph<br />
h: R = 2,6-DiMePh<br />
i: R = 2-MeOPh<br />
j: R = Phenanthrene<br />
Acknowledgment<br />
We thank the National Natural Science Foundation of China, and the Ministry of Education of<br />
China for financial support.<br />
References<br />
(1) Hayashi, T.; Yamasaki, K. Chem. Rev. 2003, 103, 2829.<br />
(2) Duan, H.-F.; Xie, J.-H.; Shi, W.-J.; Zhang, Q.; Zhou, Q.-L. Org. Lett. 2006, 8, 1479
P-161<br />
SYNTHESIS AND MECHANISM OF PHOSPHAISOQUINOLIN-1-ONES BY<br />
Pd(II)-CATALYZED CYCLIZATION OF<br />
O-(1-ALKYNYL)PHENYLPHOSPHONAMIDE MONOESTERS<br />
Wei Tang and Yi-Xiang Ding*<br />
Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences,<br />
354 Fenglin Lu, Shanghai 200032, China<br />
Isoquinolin-1-ones have gained considerable synthetic and pharmacological interest for a long<br />
time because of their diverse bioactivities, Since there is a remarkable similarity in reactivity and<br />
bioactivities between the carbon species and their phosphorus counterparts, 1 one can anticipate that<br />
the phosphonamide analogues of isoquinolin-1-ones (i.e., phosphaisoquinolin-1-ones) would have<br />
potential bioactivities similar to those of isoquinolin-1-ones.<br />
The transition-metal-catalyzed cyclization of alkynes possessing a nucleophile in proximity to<br />
the triple bond is an important process in organic synthesis, which can construct various<br />
heterocycles in an efficient and atom economic way. 2 In this paper, we report a mild and efficient<br />
palladium-catalyzed intramolecular cyclization of o-(1-alkynyl)phenylphosphonamide monoethyl<br />
esters 1, leading to the formation of the phosphaisoquinolin-1-ones 2 (Scheme 1).<br />
The current reaction shows very high regioselectivity to give 6-endo-dig cyclization product. In<br />
each case, only the six-membered endocyclic phosphaisoquinolin-1-ones were obtained, To probe<br />
whether the synthesized phosphaisoquinolin-1-ones possessed biological activities, their in vitro<br />
anti-tumor properties were evaluated in an A-549 lung cell line by the SRB assay. At a<br />
concentration of 10-4 mol/L, the A-549 lung cell growth inhibition ratios of 2a, 2c, 2d, 2e, 2f, 2h,<br />
2j, 2l are 97.2%, 74.7%, 83.2%, 97.0%, 97.2%, 97.2%, 97.5%, 97.2%, respectively; but their<br />
biological activities drop obviously with the decrease of concentration. We capture some<br />
unexpected intermediates 4, 5, 6 (Scheme 2) by ESI-MS,3 CSI-MS4 technic, which could leads to a<br />
deep understanding of the mechanism of the palladium-catalyzed cyclization.<br />
153
Recfereces:<br />
(1) Dillon, K. B.; Mathey, F.; Nixon FRS, J. F. Phosphorus: The Carbon Copy; John Wiley & Sons: Chichester, 1998.<br />
(2) Alonso, Francisco, Beletskaya, Irina P., Yus, Miguel., Chem.Rev. 2004, 104, 3079-3159.<br />
(3) a) L. S. Santos, J. O. Metzger, Angew. Chem. Int. Ed. 2006, 45, 977-981; d) C. Trage, D. Schröder, H. Schwarz;<br />
Chem. Eur. J. 2005, 11, 619 – 627; m) H. Guo, R. Qian, Y. Liao, S. Ma, and Y. Guo, J. Am. Chem. Soc. 2005, 127,<br />
13060-13064.<br />
(4) a) L. Pazderski, E. Szłyk, J. Sitkowski, B. Kamienski, L. Kozerski, J. Tousek, R. Marek Magn. Reson. Chem. 2006;<br />
44: 163–170; b) E. Szłyk, A. Grodzicki, L. Pazderski, A. Wojtczak, J. Chatłas, G. Wrzeszcz, J.Sitkowski, B. Kamienski,<br />
J. Chem. Soc., Dalton Trans., 2000, 867–872.<br />
154
P-174<br />
NOVEL PYRIDO- AND BENZO-ANNULATED 1,3-AZAPHOSPHOLES<br />
J. Heinicke, a M. S. S. Adam, a B. R. Aluri, a P.G. Jones b<br />
EMA-University Greifswalda (Germany), Technical University Braunschweigb (Germany)<br />
Benzazaphospholes are particularly stable π-excess aromatic heterophospholes [1], suitable for<br />
the study of donor-substituted derivatives for use as hybrid ligands and in catalysis. Syntheses of<br />
novel pyrido- and benzo-annulated 1,3-azaphospholes, comprising Pd-catalyzed C-N and C-P<br />
couplings, reduction and ring closure, are presented (e.g. Scheme). Ni-catalyzed P-C coupling and<br />
reductive cyclization, applicable for 1H-1,3-benzazaphospholes, fail for pyridine- or N-tertiary<br />
derivatives. Tolerance or restrictions by other functions will be reported.<br />
X<br />
1. LiAlH 4<br />
2. Me 2NCH(OMe) 2<br />
X = CH, N<br />
Pd catalyst<br />
Br<br />
+ RNH2 Br<br />
X<br />
P<br />
N<br />
R<br />
X<br />
Br<br />
NH<br />
R<br />
1. tBuLi<br />
2. Electrophile<br />
155<br />
Pd catalyst<br />
HPO(OEt) 2 / base<br />
or P(OEt) 3<br />
X<br />
X<br />
P<br />
N<br />
R<br />
EtO OEt<br />
or addition product depending on<br />
substituents and conditions<br />
A first oxidation-dimerization product of a benzazaphosphole (center), trapped by<br />
cocrystallization with the respective benzazaphosphole (left and right) in a supra-molecular,<br />
hydrogen-bonded arrangement, has been characterized by X-ray structure analysis.<br />
Reference<br />
[1] R. K. Bansal, J. Heinicke, Chem. Rev. 2001, 101, 3549-3578.<br />
.<br />
P<br />
N<br />
R<br />
E<br />
O<br />
H
P-177<br />
DESIGNING PHOSPHORUS LIGANDS AT THE P-CENTER FOR ASYMMETRIC<br />
REACTIONS CATALYZED BY Rh or Pd COMPLEXES<br />
C. Darcel,* a D. Moulin, b C. Bauduin, b M. Gomès, a J.C. Henry, d M. Lagrelette, a P. Richard, a<br />
P.D. Harvey c and S. Jugé* a<br />
[a] Institut de Chimie Moléculaire de l'Université de Bourgogne,UMR CNRS 5620, 9 av. A. Savary, 21078<br />
Dijon, France; e-mail: Christophe.Darcel@u-bourgogne.fr, Sylvain.Juge@u-bourgogne.fr<br />
[b] BASF-Aktiengesellschaft; GCI/B-M 311, 67056 Ludwigshafen, Germany.<br />
[c] Département de Chimie de l'Université de Sherbrooke, Sherbrooke J1K2R1 Québec, Canada,<br />
[d] SYNTHELOR SAS- 102 impasse H. Becquerel, Dynapôle de Ludres-Fléville 54510 Ludres, France<br />
Introducing the chirality on the phosphorus atom of a ligand is of particular interest to handle the<br />
chiral environment of the catalyst center. Herein we report the diastereoselective synthesis of new<br />
P-chirogenic phosphorus ligands, AMPP 1, phosphine-phosphinites 2 and ferrocenyl aminophosphine<br />
3, and their applications in hydrogenation and allylic alkylation catalyzed by rhodium or palladium<br />
complexes, respectively. The enantioselectivity of the catalyzed reaction was considered to the light<br />
of ligands and complexes structures.<br />
R<br />
CH3 1<br />
Ph<br />
P<br />
N<br />
CH 3<br />
P<br />
O<br />
Ph<br />
R 2<br />
R 3<br />
1<br />
R 1<br />
R 2<br />
P<br />
156<br />
P<br />
O<br />
R 3<br />
R 4<br />
2<br />
Fe<br />
NR 2<br />
P<br />
R1 R2 3<br />
Our results showed that changing properly the R 1 -R 3 groups of the AMPP 1 thanks to the<br />
P-chirogenic chlorophosphine building blocks, 1 leads to hydrogenated compounds in e.e. from 99% (S)<br />
to 80% (R). 2 In addition, we have shown that the chirality beared by the phosphine part of the ligand 2,<br />
is essential for the asymmetric induction. Finally, in the case of the ferrocenyl aminophosphine 3, the<br />
phosphorus or the planar chirality are stereodeterminant, in catalyzed hydrogenation and allylation,<br />
respectively.<br />
Me<br />
Ph<br />
R 3<br />
R<br />
R<br />
H2 substrate<br />
1<br />
Me<br />
N<br />
O P<br />
Rh<br />
COD<br />
R 2<br />
MeO 2C NH<br />
These results leads us to propose models in order to explain the enantioselectivity of the catalysis.<br />
Reference<br />
1) C. Bauduin, D. Moulin, El B. Kaloun, C. Darcel, S. Jugé J. Org. Chem. 2003, 68, 4293.<br />
2) C. Darcel, D. Moulin J.C. Henry, M. Lagrelette, P. Richard, P. D. Harvey, S. Jugé, Eur. J. Org. Chem. 2007 in press.<br />
O<br />
Rh H<br />
H<br />
Ph<br />
CH 3<br />
MeO 2C NHCOMe<br />
(S)<br />
Ph
P-196<br />
N-HETEROCYCLIC CARBENE-COPPER COMPLEX-CATALYZED<br />
HYDROPHOSPHINYLATION OF ALKYNES<br />
Mingyu Niu, Hua Fu,* Yuyang Jiang and Yufen Zhao<br />
Key Laboratory of Bioorganic Phosphorus Chemistry and Chemical Biology, Ministry of Education, Department of<br />
Chemistry, Tsinghua University, Beijing 100084, P. R. China.<br />
Fax: 86-10-62781695; Tel: 86-10-62797186; E-mail: fuhua@mail.tsinghua.edu.cn<br />
N-Heterocyclic carbenes (NHCs) have emerged as a new class of ligand for homogeneous<br />
catalysis in the past decade. 1 Since Arduengo reported the first (NHC)-copper complex derived<br />
from imidazolium salt and copper triflate, 2 the NHC-copper complexes have been reported to<br />
catalyze a number of reactions. Hydrophosphinylation of alkynes is one of the most straightforward<br />
ways for the preparation of alkenylphosphine oxides, Several efficient methods for metal-catalyzed<br />
synthesis of alkenylphosphine oxides have been developed including palladium, 3 nickel, 4 rhodium, 5<br />
ytterbium-imine complex-catalyzed 6 additions of P(O)H compounds to alkynes. Recently, we have<br />
developed efficient copper-catalyzed additions of P(O)H compounds to alkynes, and the reactions<br />
provided the regio- and stereoselective E-alkenylphosphine oxides under catalysis of the<br />
commercially available and inexpensive copper catalyst system CuI/ethylenediamine. 7 Herein, we<br />
report a new method for synthesis of alkenylphosphine oxides using the NHC-copper complex as<br />
the catalyst.<br />
R 1<br />
+<br />
H<br />
Cat. =<br />
O R 2<br />
P<br />
R 3<br />
157<br />
5mol % Cat.<br />
N N<br />
References:<br />
(1) For reviews, see: (a) D. Bourissou, O. Guerret, F. P. Gabbai, G. Bertrand, Chem. Rev. 2000, 100, 39. (b) W. A.<br />
Herrmann, Angew. Chem.,Int. Ed. 2002, 41, 1290.<br />
(2) A. J. Arduengo, ,III, H. V. R. Dias, J. C. Calabrese, F. Davidson, Organometallics. 1993, 12, 3405.<br />
(3) (a) L.-B. Han, R. Hua , M. Tanaka, Angew. Chem., Int. Ed. 1998, 37, 94; (b) A. Jr. Allen, L. Ma, W. Lin,<br />
Tetrahedron Lett.2002, 43, 3707.<br />
(4) L.-B. Han, C. Zhang, H. Yazawa, S. Shimada, J. Am. Chem. Soc. 2004, 126, 5080.<br />
(5) L.-B. Han, C.-Q. Zhao, M. Tanaka, J. Org. Chem. 2001, 66, 5929.<br />
(6) K. Takaki, M. Takeda, G. Koshoji, T. Shishido, K. Takehira, Tetrahedron Lett. 2001, 42, 6357.<br />
(7) M. Y. Niu, H. Fu, Y. Y. Jiang, Y. F. Zhao, Chem. Commun. 2007, 3, 272.<br />
CuCl<br />
R 1<br />
P<br />
O<br />
R 2<br />
R 3
Symposium 3<br />
Structure and Reactivity of Inorganic<br />
Phosphorus Compounds
KL-11<br />
BIOLOGICALLY RELEVANT PHOSPHORANES: STRUCTURAL<br />
CHARACTERIZATION OF GLUCOFURANOSE AND XYLOFURANOSE<br />
PHOSPHORANES AS APPLIED TO PHOSPHORYL TRANSFER ENZYMES<br />
Robert Holmes* A. Chandrasekaran, and Natalya V. Timosheva<br />
Department of Chemistry, University of Massacusetts, USA Email: rrh@chem.umass.edu<br />
Factors Influencing Donor Coordination Leading to Hypervalency<br />
The coordination tendencies of phosphorus to form a hexacoordinated state from a<br />
pentacoordinated state, which might assist in describing the mechanistic action of phosphoryl<br />
transfer enzymes, are delineated. The factors discussed include substrate and transition or<br />
intermediate state anionicity, hydrogen bonding, packing effects, that is, van der Waals forces, the<br />
ease of formation of hexacoordinate phosphorus from lower coordinate states, and the<br />
pseudorotation problem common to nonrigid pentacoordinate phosphorus. In view of the work<br />
reported here and recent work on enzyme promiscuity and moonlighting activities, it is suggested<br />
that donor action should play a role in determining active site interactions in phosphoryl transfer<br />
enzyme mechanisms.<br />
Ease of Formation of the Hexacoordinate State<br />
Biochemists studying phosphoryl transfer enzymes outline mechanisms of nucleophilic attack at<br />
phosphorus that take place by way of proposed trigonal bipyramidal intermediates or transition<br />
states. However, recent work has shown the ready availability of higher coordinate forms of<br />
phosphorus, particularly the ease of formation of hexacoordinate phosphorus. Recently we reported<br />
the unprecedented ease of conversion of tricoordinate to hexacoordinate phosphorus with typical<br />
donor atoms found at the active sites of enzymatic reactions. In solution, the existence of these two<br />
disparate geometries are found in equilibrium with one another.<br />
Biochemical Implications<br />
In the area of promiscuous phosphoryl transfer enzymes, the present work provides a mechanism<br />
for such enzymes to conduct different reactions at the same active site. For example, the active site<br />
of chymotrypsin is able to catalyze both amidase and phophotriesterase reactions. Our recent<br />
publications established the X-ray structure of several biorelevant phosphoranes. Included are the<br />
structures that were established of one xylofuranose based phosphorane 1 and one thymidine based<br />
phosphorane 2.<br />
O O<br />
O<br />
P<br />
F<br />
O<br />
(1A)<br />
O<br />
O<br />
O<br />
159<br />
Solution<br />
Solid<br />
O O<br />
O<br />
O<br />
P O<br />
F<br />
(1B)<br />
O<br />
O
O<br />
O<br />
O<br />
P<br />
F<br />
O<br />
O<br />
H<br />
N O<br />
O N<br />
Solution<br />
Solid<br />
160<br />
F<br />
O<br />
O P<br />
O<br />
(2A) (2B)<br />
O<br />
O N<br />
O N<br />
H<br />
O<br />
In solution, the bicyclic phosphorane 1 showed dynamic equilibrium between two isomeric forms<br />
while phosphorane 2 showed a static conversion between two isomers, one in solid state and the<br />
other in solution state. In addition, bicyclic phosphorane 3 exists in equilibrium between<br />
pentacoordinated and hexacoordinated isomeric forms.<br />
O<br />
OCH2CF3 O<br />
S O P O<br />
O<br />
3<br />
The rapid exchange process between these two geometries reorients the nucleotidyl or<br />
carbohydrate component of the trigonal bipyramidal phosphorane. At an active site, this type of<br />
pseudorotational behavior provides a mechanism that could bring another active site residue into<br />
play and account for a means for phosphoryl transfer enzymes to express promiscuous behavior.<br />
Pseudorotation, a well-founded process in non-enzymatic phosphorus chemistry may have an<br />
application in the future of phosphoryl transfer enzyme chemistry.<br />
Pertinent References<br />
1. N. V. Timosheva, A. Chandrasekaran, and R. R. Holmes, ” Biologically Relevant Phosphoranes: Synthesis and<br />
Structural Characterization of Glucofuranose Derived Phosphoranes with Penta and Hexacoordination at Phosphorus, ”<br />
Inorg. Chem., 46, 0000-0000 (2007).<br />
2. N. V. Timosheva, A. Chandrasekaran, and R. R. Holmes, “Biologically Relevant Phosphoranes: Structural<br />
Characterization of Glucofuranose and Xylofuranose Based Phosphoranes,” Inorg. Chem., 45, 3113-3123 (2006).<br />
3. N. V. Timosheva, A. Chandrasekaran, and R. R. Holmes, “Biologically Relevant Phosphoranes: Structural<br />
Characterization of a Nucleotidyl Phosphorane,” J. Am. Chem. Soc., 127(36), 12474-12475 (2005).<br />
4. R. R. Holmes “Phosphoryl Transfer Enzymes and Hypervalent Phosphorus Chemistry,” Acc. Chem. Res., 37,<br />
746-753 (2004).<br />
5. N. V. Timosheva, A. Chandrasekaran, R. O. Day, and R. R. Holmes, “Conversion of Tricoordinate to Hexacoordinate<br />
Phosphorus. Formation of a Phosphorane-Phosphatrane System,” J. Am. Chem. Soc., 124, 7035-7040 (2002).<br />
HO<br />
O<br />
O<br />
O<br />
O
KL-19<br />
STUDIES ON STABLE 1,3-DIPHOSPHACYCLOBUTANE-2,4-DIYLS<br />
Masaaki Yoshifuji,a Anthony J. Arduengo, III a and Shigekazu Itob<br />
a Department of Chemistry, The University of Alabama, Tuscaloosa, AL 35487, USA<br />
b Department of Chemistry, Graduate School of Science, Tohoku University,Aoba, Sendai 980-8578, Japan<br />
A sterically protected phosphaalkyne 1 reacted with 0.5 eq of t-butyllithium to give a<br />
4-membered ring phosphide anion, 3, via intermediate 2. When 3 was quenched with methanol as<br />
a proton source [1], 1,4-diphosphacyclobutene 4 [2] was obtained and the structure was analyzed by<br />
X-ray crystallography. Oxidation of 3 with 0.5 eq of iodine resulted in the formation of a neutral<br />
radical 5 (pink). Radical 5 was a stable crystalline compound and its structure was analyzed by<br />
X-ray diffraction and EPR spectroscopy [3].<br />
Mes* C P<br />
1<br />
tBuLi<br />
Mes*= 2,4,6-tBu 3C 6H 2<br />
Mes* C P tBu<br />
1<br />
Mes*<br />
tBu<br />
P<br />
Mes*<br />
2<br />
P<br />
3<br />
Mes*<br />
H<br />
tBu<br />
P<br />
Mes*<br />
P<br />
4<br />
MeOH<br />
161<br />
tBu<br />
P<br />
Mes* Mes*<br />
P<br />
5<br />
MeI<br />
tBu<br />
tBu<br />
Mes*<br />
P<br />
P<br />
Mes*<br />
(4-BrC 6H4) 3N<br />
Mes*<br />
P<br />
P<br />
Mes*<br />
Me 7<br />
Me 6<br />
+• – •SbCl6 When the phosphide 3 was quenched with methyl iodide, a stable biradical species<br />
X<br />
6 (dark blue) was obtained [4]. The structure of 6 was determined by X-ray analysis<br />
P<br />
indicating that two Mes* groups protect efficiently two carbon radical centers.<br />
P<br />
Compound 6, 1,2-diphosphacyclobutane-2,4-diyl, is a member of a new class of<br />
Y<br />
8<br />
stable biradicals, on which Niecke [5] and Bertrand [6] have recently reported.<br />
Changing the identities of the nucleophile (from t-BuLi) and the electrophile (from MeI), various<br />
derivatized biradicals 8 (X, Y= Me, Et, PhCH2, n-Bu, t-Bu, n-C18H37, n-C3F7, PhC(O), and i-Pr2N)<br />
were formed [7,8,9]. Several of these biradicals were characterized by X-ray crystallography.<br />
NMR, UV, and CV data for 8 will also be discussed. Furthermore, 6 reacted with<br />
tris(4-bromophenyl)ammoniumyl hexachloroantimonate as an oxidant to give the corresponding<br />
cation radical 7 [10] and the structure was determined by analysis of its EPR spectrum.<br />
References<br />
[1]A. M. Arif, A. R. Barron, A. H. Cowley, S. W. Hall, J. Chem. Soc., Chem. Commun. 1988, 171.<br />
[2]S. Ito, H. Sugiyama, M. Yoshifuji, Chem. Commun. 2002, 1744. [3]S. Ito, M. Kikuchi, M. Yoshifuji, A. J. Arduengo,<br />
III, T. A. Konovalova,, L. D. Kispert, Angew. Chem. Int. Ed. 2006, 45, 4341. [4]H. Sugiyama, S. Ito, M. Yoshifuji,<br />
Angew. Chem. Int. Ed. 2003, 42, 3802. [5]E. Niecke, A. Fuchs, F. Baumeister, M. Nieger, W. W. Schoeller, Angew.<br />
Chem., Int. Ed. Engl. 1995, 34, 555.[6]D. Scheschkewitz, H. Amii, G. Gornitzka, W. W. Schoeller, D. Bourissou, G.<br />
Bertrand, Science 2002, 295, 1880.[7]H. Sugiyama, S. Ito, M. Yoshifuji, Chem. Eur. J. 2004, 10, 2700.[8]M. Yoshifuji,<br />
H. Sugiyama, S. Ito, J. Organomet. Chem. 2005, 690, 2515.[9]S. Ito, M. Kikuchi, H. Sugiyama, M. Yoshifuji, J.<br />
Organomet. Chem. in press, DOI: 10.1016/j.jorganchem.2006.10.066.[10]M. Yoshifuji, A. J. Arduengo, III, T. A.<br />
Konovalova, L. D. Kispert, M. Kikuchi, S. Ito, Chem. Lett. 2006, 45, 4341.<br />
I 2<br />
Mes* Mes*
IL-31<br />
ORGANOPHOSPHORUS Pi-CONJUGATED MATERIALS FOR<br />
OPTOELECTRONIC APPLICATIONS<br />
Muriel Hissler, Christophe Lescop, Régis Réau*<br />
Phosphore et Matériaux Moléculaires, Université de Rennes 1, UMR CNRS 6226,<br />
Campus de Beaulieu, F-35042, Rennes, France Email: regis.reau@univ-rennes1.fr<br />
Organophosphorus building blocks have been rarely used for the tailoring of π-conjugated<br />
systems. 1 In our group, we have exploited the unique properties of the phosphole ring (low aromatic<br />
character, σ,π-conjugation) to develop a novel family of π-conjugated oligomers and polymers. Of<br />
particular interest, the P-atom of phospholes exhibits a versatile reactivity allowing direct access to<br />
a range of new -conjugated systems including transition metal complexes. 2,3 These chemical<br />
modifications of the P-atom offer a way to diversify their electronic and optical properties and are<br />
key issues for the optimization of phosphole-based materials toward optoelectronic applications. For<br />
example, access to organophosphorus-containing OLED materials will be presented. 4 The synthesis<br />
of the first phosphole-modified polythiophene will be reported. 5 Due to the presence of reactive<br />
P-atom, this conjugated polymers (CPs) can sense chalcogenides, an unprecedented property for<br />
CPs. Lastly, using the ability of phospholes to coordinate metal centers, 3 we have design<br />
Cu(I)-dimmers which are molecular clips for the synthesis of nano-scale supramolecular assemblies<br />
having a [2.2]-paracyclophane topology. [6] The scope of this method to control the organisation of<br />
classic π-conjugated systems in the solid state will be presented.<br />
References<br />
[1] T. Baumgartner, R. Réau, Chem. Rev. 2006, 106, 4681..<br />
[2] J. Casado, R. Réau, J. T. López Navarrete, Chem. Eur. J., 2006, 12, 3759<br />
[3] F. Leca, C. Lescop, E. Rodriguez, K. Costuas, J.-F. Halet, R. Réau Angew. Chem. Int. Ed., 2005, 44, 2190.<br />
[4] H.-C. Su, O. Fadhel, C.-J. Yang, T.-Y. Cho, C. Fave, M. Hissler, C.-C. Wu, R. Réau J. Am. Chem. Soc., 2006, 128,<br />
983.<br />
[5] M. Sebastian, M. Hissler, C. Fave, J. Rault- Berthelot, C. Odin, R. Réau, Angew. Chem. Int. Ed., 2006, 45, 6152.<br />
[6] B. Nohra, S. Graule, C. Lescop, R. Réau, J. Am. Chem. Soc., 2006, 128, 3520.<br />
162
IL-32<br />
RECENT ADVANCES IN THE CHEMISTRY OF P,N-HETEROCYCLES<br />
Streubel*, R., Özbolat, A., Helten, H., Perez, J. M., and Nieger M.<br />
Institut für Anorganische Chemie, Gerhard-Domagk-Str. 1, D-53121 Bonn;<br />
E-mail: r.streubel@uni-bonn.de<br />
Gaining mild access to small- and medium-sized heterocycles and to use them as starting<br />
materials for new and selective transformations are current synthetic challenges in phosphorus<br />
chemistry. 2H-Azaphosphirene complexes might serve as a good case-in-point, e.g., we have shown<br />
that they are well suited for thermal, photochemical and even catalytical reactions. [1] Here we report<br />
on the use of 2H-azaphosphirene complexes I in the synthesis of 1,3,2-oxaza-phosphole-3-ene<br />
II, [2] 1,3,4-oxazaphosphol-2-ene II, [3] 1,3,5-oxaza-phosphole-4-ene IV, [4] 1,2H-azaphosphole-5-ene<br />
V, [5] 2H-1,4,2-diazaphosphole complexes VI [6] and 3H-1,3-azaphosphole complexes VII [7]<br />
(Scheme). A new access to I will be reported, too. [8]<br />
(OC) 5W<br />
(OC) 5W<br />
R<br />
R<br />
R<br />
R<br />
R<br />
R 1<br />
P<br />
O N<br />
R<br />
I-VII: R 1 = CH(SiMe 3) 2<br />
I, IV, VI, VII: R 2 = Ph, NMe 2<br />
I-VII: R = alkyl, aryl<br />
R<br />
P<br />
R 1<br />
N<br />
R<br />
II<br />
(OC) 5W<br />
R<br />
R<br />
(OC) 5W R 1<br />
R 2<br />
(OC) 5W<br />
O<br />
P<br />
P<br />
C N<br />
N<br />
163<br />
R 1<br />
N<br />
R 1<br />
R<br />
I<br />
III<br />
(OC) 5W<br />
P<br />
R<br />
N<br />
2<br />
P<br />
R2 R<br />
V VI VII<br />
R<br />
R 2<br />
(OC) 5W<br />
NMR data, X-ray structures and DFT studies on various reaction courses using model systems<br />
will be presented and discussed.<br />
Reference<br />
[1] Review: R. Streubel, Coord. Chem. Rev. 2002, 227, 175.<br />
[2] a) U. Rohde, F. Ruthe, P. G. Jones, R. Streubel, Angew. Chem. Int. Ed. 1999, 38, 215; b) R. Streubel, P. G. Jones, R.<br />
Streubel, unpublished.<br />
[3] a) H. Wilkens, F. Ruthe, P. G. Jones, R. Streubel, Chem. Eur. J. 1998, 4, 1542; b) N. Hoffmann, R. Streubel, L.<br />
Ricard, N. Hoa Tran Huy, F. Mathey, C. R. Chimie 2004, 7, 927.<br />
[4] a) C. Neumann, A. Prehn Junquera, C. Wismach, P.G. Jones, R. Streubel, Tetrahedron 2003, 59, 6213; b) R.<br />
Streubel, J. M. Perez, M. Nieger, unpublished.<br />
[5] a) N. Hoffmann, P. G. Jones, R. Streubel, Angew. Chem. Int. Ed. 2002, 41, 1226; b) R. Streubel, H. Wilkens, F.<br />
Ruthe, P. G. Jones, Organometallics 2006, 25, 4830.<br />
[6] H. Helten, M. Nieger, G. Schnakenburg, R. Streubel, submitted.<br />
[7] H. Helten, R. Streubel, unpublished.<br />
[8] A. Özbolat, G. von Frantzius, M. Nieger, R. Streubel, submitted.<br />
N<br />
N<br />
P<br />
R<br />
R 1<br />
O<br />
R 1<br />
R<br />
R<br />
IV
IL-50<br />
RADIATION-INDUCED SYNTHESIS OF POLYMERS ON THE BASIS OF<br />
ELEMENTAL PHOSPHORUS<br />
N.P. Tarasova<br />
D.Mendeleyev University of Chemical Technology of Russia<br />
Miusskay Sq., 9, Moscow, 125047 Russia, E-mail tarasnp@muctr.edu.ru<br />
The wide use of red phosphorus in different branches of the industry: the defense, the synthesis<br />
of materials for electronics, nonferrous metallurgy, production of the flame retardants for polymeric<br />
materials, organophosphorus synthesis, – specifies the search for the simple and easily controlled<br />
processes of the synthesis of the polymers of element phosphorus with the useful properties.<br />
We have carried out the studies of the radiation-induced synthesis of the polymers based on the<br />
elemental phosphorus. The use of methods of radiation chemistry made it possible to solve a<br />
number of problems, traditional in the synthesis of the red phosphorus:<br />
1. The reduction of the temperature of the beginning of the reaction of the formation of red<br />
phosphorus from the white one and the enlargement of the temperature interval of the process.<br />
2. The variation of the conditions of the initiation of the reaction by the ionizing radiation makes it<br />
possible to govern the composition and the structure of phosphorous-containing polymer;<br />
3. The methods of the synthesis of high molecular mass compounds (bulk polymerization,<br />
polymerization in the solution and emulsion polymerization) being applied to the inorganic<br />
monomer –the white phosphorus, has made it possible to obtain phosphorus-based polymers with<br />
different structures. The basic factors, which control the properties of end product, have been<br />
investigated, depending on the method of the synthesis used. It possible to obtain:<br />
• using the radiation-induced balk polymerization - the analogs of thermal red phosphorus<br />
with the low degree of polymerization, the red phosphorus with the desirable radiation, thermal<br />
and doped defectiveness;<br />
• using the polymerization in solution-phosphorous-containing polymers with the low degree<br />
of polymerization. The polymeric products contain the fragments of the solvents (RO, C6H5, CCl3,<br />
C2H5O, etc.). The reactivity of the synthesized polymers is comparable with that of the white<br />
phosphorus;<br />
• using the polymerization of white phosphorus in the dispersed state (water emulsions)phosphorous-based<br />
polymers in the shell-growth process. It is possible to regulate the size of<br />
polymeric particles, porosity, and reaction ability of the polymer.<br />
The qualitative and quantitative characteristics of the process and of the end products obtained<br />
will be discussed.<br />
164
O-72<br />
INFLUENCE OF MEDIA COMPONENTS ON PROCESSES OF RADIATION-INDUSED<br />
POLYMERIZATION OF WHITE PHOSPHORUS<br />
I.M. Artemkina, A.S. Vilesov, Y.V. Smetannikov, N.P. Tarasova<br />
D. Mendeleyev University of Chemical Technology of Russia, Miusskaya sq. 9, Moscow, 125047, Russia.<br />
E-mail: tarasnp@muctr.edu.ru, vilesov@gmail.com<br />
It is known that inorganic polymers (such as red phosphorus, polymeric forms of arsenic, sulfur,<br />
and their compositions) recently become the objects of intensive both theoretical and applied<br />
investigations, since determination of fundamental characteristics shows the researchers optimal<br />
ways for synthesis of such polymers. It also will be useful for the solution of the general problem<br />
“architecture” of a molecule – structure of inorganic material – their physicochemical properties”.<br />
Nowadays the development of green technologies is one of priority directions both for science and<br />
for the industry. Red phosphorus, being one of the well-known allotropic modifications of<br />
elemental phosphorus, is now being defined as a three-dimensional inorganic polymer with<br />
homo-chains P-P. It is known that the reaction conditions, the properties of the solvent, additives,<br />
etc., may lead to drastic changes in the rate of polymorphic transformation. The evidence exists<br />
confirming the fact that the polymerization of white phosphorus might be initiated by intermediates<br />
of different nature.<br />
The object of our research is the radiation-induced polymerization of white phosphorus in the<br />
presence of ionic liquids (IL) to give red phosphorus. It is a worthy alternative to the conventional<br />
procedure of high-temperature transformation of the white phosphorus to the red one. As we have<br />
shown in our previous studies, the mechanism of the radiation-induced polymerization of white<br />
phosphorus in non-polar solvents (benzene, halohydrocarbons, hexane) is the radical one.<br />
One might expect, by rising the reaction media polarity, to increase the role of the ionic<br />
contribution to the formation of the phosphorus-containing polymers (PCP). IL are the powerful<br />
instrument for the “tuning” of reaction system properties. It was this capacity that we have used for<br />
the intensification of the radiation-induced polymerization process of white phosphorus.<br />
The presence of IL ( 1-ethyl-3-methylimidazolium bis(trifluoromethane-sulfonyl)imide,<br />
1-butyl-3-methylimidazolium trifluoromethanesulfonate, 1-butyl-1-metylpyrro-lidinium<br />
bis(trifluoromethylsulfonyl)imide , 1-butyl-3-methylimidazolium tetrafluoro-borate ,<br />
1-butyl-3-methylimidazolium hexafluorophosphate, 1-hexyl-3-methylimidazolium<br />
tris(penta-fluoroethyl)trifluorophosphate) – compounds with charge separation systems – in the<br />
reaction media (P4–DMSO, P4–benzene–DMSO) led to the full conversion of white phosphorus to<br />
be achieved at absorbed doses of about 20 kGy.<br />
The observed acceleration of the polymerization rate of phosphorus in the presence of ionic<br />
liquids is supposed to be the result of the formation of the intermediate complex [P4-IL]. The NMR<br />
P 31 data confirmed the hypothesis of the complex formation.<br />
Therefore, we were first to show that in the conditions of the radiation-induced polymerization of<br />
white phosphorus in solution formation rate of phosphorus-containing polymers could be increased<br />
by taking control of media polarity.<br />
165
O-73<br />
AN EFFECTIVE METHODOLOGY OF P,N-MACROCYCLES DESIGN<br />
A.A. Karasik a , A.S. Balueva a , R.N. Naumov a , D.V.Kulikov a , Yu.S.Spiridonova a , O.G.Sinyashin a , E. Hey-Hawkins b .<br />
a<br />
A. E. Arbuzov Institute of Organic and Physical Chemistry, Russian Academy of Sciences, Arbuzov str. 8, Kazan,<br />
Russia, 420088. E-mail: oleg@iopc.knc.ru<br />
b<br />
Institut für Anorganische Chemie der Universität Leipzig, Johannisallee 29, D-04103 Leipzig, Germany. E-mail:<br />
hey@rz.uni-leipzig.de<br />
High effective covalent self-assembly of the macrocyclic polyphosphines has been found in the<br />
course of investigation of Mannich type condensation in the system: phosphine, formaldehyde and<br />
amine if bifunctional reagents (spatially divided diamines 1 or di(arylphosphino)alkanes 2 ) had been<br />
used. A number of 16-, 28-, 36- and 38-membered cyclic aminomethylphosphines and cage<br />
macrocycles with large hydrophobic intramolecular cavities have been obtained.<br />
Ar<br />
P<br />
Ar'<br />
Ar<br />
N<br />
R<br />
P<br />
P<br />
R<br />
N<br />
Ar<br />
Ar'<br />
P<br />
Ar<br />
Ar Ar<br />
P P<br />
or ArPH2 H H<br />
Me<br />
N<br />
Me<br />
P<br />
N<br />
N Me<br />
Ar<br />
P N<br />
Me<br />
Ar<br />
X<br />
R<br />
R<br />
O<br />
O<br />
P<br />
P<br />
N<br />
N<br />
R<br />
N<br />
N<br />
N<br />
N<br />
R<br />
P<br />
P<br />
R<br />
P<br />
P<br />
R<br />
P<br />
P<br />
O<br />
O<br />
166<br />
R<br />
R<br />
Ph<br />
N<br />
Ar<br />
P<br />
P<br />
Ar<br />
N<br />
N<br />
Ph<br />
P<br />
P<br />
Me<br />
N<br />
Me<br />
O<br />
NMe<br />
O<br />
Me<br />
Me<br />
Me<br />
Me<br />
Me<br />
Me<br />
O<br />
NMe<br />
O<br />
N<br />
P<br />
P<br />
Ph<br />
+ CH2O + ArCHRNH 2 or H 2N NH 2 or HRN NRH<br />
So, the formation of covalent macrocycles appears to be a general process and may be considered<br />
as a useful method for a simple one-pot synthesis of macroheterocyclic polyphosphines.<br />
Financial support from Volkswagen Foundation, RFBR (No. 06-03-32754-a), Russian Science<br />
Support Foundation and from President’s of RF Grant for the support of leading scientific schools<br />
(No. 5148.2006.3) is gratefully acknowledged.<br />
Reference<br />
1. A.S. Balueva et al Dalton Trans. 2004, 442;<br />
2. A.A. Karasik et al Heteroat. Chem. 2006, 499;<br />
3. A.A. Karasik et al Z.Anorg Allg.Chem. 2007;<br />
4. R.N. Naumov et al Dalton Trans 2004, 357.<br />
N<br />
N<br />
X<br />
N<br />
P<br />
N<br />
Ar<br />
P<br />
N<br />
Ar<br />
Ph
O-74<br />
THE MECHANISM OF THE REACTION OF ALKALI METAL PHENOXIDES WITH<br />
HEXAHALOCYCLOTRIPHOSPHAZENES<br />
Christopher W. Allen, Michael Calichman and Amy Freund,<br />
Department of Chemistry, University of Vermont, Burlington, VT, 05405, USA<br />
The study of reactions at the phosphorus (V) center in the cyclotriphosphazenes allows for a<br />
fundamental understanding of the factors controlling reactivity in phosphorus chemistry. Previous<br />
kinetic and mechanistic investigations of the nucleophilic substitution reactions of<br />
hexahalocyclotriphosphazenes have almost exclusively been devoted to systems where the<br />
nucleophile is an amine. The phenoxy substituent is one of the most ubiquitous in cyclo- and<br />
polyphosphazene chemistry so in order to gain a more general picture of the factors controlling the<br />
reactivity of the phosphazenes, we have examined the kinetics of the reactions of N3P3X6 (X=F,Cl)<br />
with the alkali phenoxides, MOPh ( M=Li,Na,K). DFT calculations using the SCI-PCB model<br />
show that in terms of enthalpic contributions the associative mechanism is favored. Experimental<br />
kinetic studies were carried out using GC-mass spectrometry and 31 P NMR spectroscopy.<br />
Contrary to conventional wisdom, the rate of the reaction of the fluorophosphazene is much faster<br />
than that of the chlorophosphazene. In the reactions of N3P3Cl6-nFn (n=2, 4) substitution occurs<br />
exclusively at the PF2 centers and the liberated fluoride ion acts as a nucleophile towards the PCl2<br />
center. These observations are consistent with our calculated NBO charges at the relative<br />
phosphorus centers. The variations of the rate of reaction with temperature, solvent and alkali<br />
metal cation have been determined. The activation parameters for the chlorophosphazene system<br />
show positive enthalpy and entropy of activation. This is in contrast to systems involving amines<br />
as nucleophiles where negative entropies of activation have been determined. The reaction rates<br />
of the chlorophosphazene increase with solvent basicity. The rates of reaction for the heavier<br />
alkali metal cations are greater than those for the lighter cations. This trend is the reverse of the<br />
trend in the metal salt lattice energies thus formation of the alkali metal salt is not part of the rate<br />
determining step. The addition of crown ethers results in a significant rate increase. Consideration<br />
of all of these data suggest a mechanism where the rate has a major contribution from a<br />
preequilibrium wherein the metal phenoxide cluster dissociates into the kinetically active species<br />
which adds, in the rate determining step, to the Phosphorus (V) center i.e. the transition state is<br />
before the intermediate. This is in contrast to the amine systems wherein the rate determining<br />
step is the formation of the hydrohalide and thus the transition state occurs after the intermediate.<br />
167
O-75<br />
STRAINED P2C AND P2C2 CYCLIC CATIONS FROM PHOSPHAALKENES<br />
Derek P. Gates<br />
Department of Chemistry, University of British Columbia, Vancouver, British Columbia, CANADA, V6T 1Z1<br />
dgates@chem.ubc.ca<br />
Highly strained phosphorus heterocycles are attractive synthetic targets due to their novel<br />
structures, bonding, and their utility as building blocks in organophosphorus chemistry. 1<br />
Moreover, phosphorus heterocycles often have no isolable counterparts in nitrogen chemistry, and<br />
consequently, they provide unique insight into the striking differences between the chemistry of the<br />
first and second periods. A dramatic illustration of this difference is provided by the pioneering<br />
investigations of the (P2CR5) + cation which is isolated as the symmetric diphosphiranium (A) rather<br />
than the open-chain form (B). 2 In contrast, (N2CR5) + adopts the open chain form B. We have been<br />
interested in the elusive asymmetric diphosphiranium (C) which is formally a valence isomer of the<br />
acyclic 3-phosphino-1-phosphenium ion (D).<br />
P<br />
C<br />
P<br />
+<br />
P P<br />
C<br />
+<br />
168<br />
P<br />
C<br />
P<br />
+<br />
P P<br />
C<br />
A B C D<br />
An asymmetric diphosphiranium cation has previously been detected spectroscopically in<br />
solution. 3,4 In this presentation, a simple route to isolable diphosphiranium cations of type C will<br />
be disclosed. 5 In particular, treating phosphaalkene 1 with HOTf (0.5 equiv) affords asymmetric<br />
diphosphiranium 2[OTf] which can be isolated and characterized by X-ray crystallography.<br />
Surprisingly, the analogous reaction of 1 with MeOTf (0.5 equiv) affords 1,3-diphosphetanium<br />
3[OTf] where the methyl group from MeOTf is found at phosphorus rather than carbon. The<br />
detection of intermediates in these reactions and the unusual umpolung-like reactivity for the P=C<br />
bond in 1 will also be discussed. In addition, the generality of these new reactions and the possible<br />
use of these novel rings as precursors to new polymers will also be considered in this presentation.<br />
1<br />
2 3<br />
References<br />
1. Mathey, F., Phosphorus-Carbon Heterocyclic Chemistry: The Rise of a New Domain. Pergamon: Amsterdam,<br />
2001.<br />
2. See: (a) Kato, T.; Gornitzka, H.; Baceiredo, A.; Schoeller, W. W.; Bertrand, G. Science 2000, 289, 754; (b) Kato,<br />
T.; Gornitzka, H.; Baceiredo, A.; Schoeller, W. W.; Bertrand, G. J. Am. Chem. Soc. 2002, 124, 2506.<br />
3. Loss, S.; Widauer, C.; Rüegger, H.; Fleischer, U.; Marchand, C. M.; Grützmacher, H.; Frenking, G. Dalton Trans.<br />
2003, 85.<br />
4. Tsang, C.-W.; Rohrick, C. A.; Saini, T. S.; Patrick, B. O.; Gates, D. P. Organometallics 2004, 23, 5913.<br />
5. Bates, J. I.; Gates, D. P. J. Am. Chem. Soc. 2006, In Press.<br />
+
O-76<br />
NEW REAGENTS FOR HALOGENATION OF PHOSPHORUS<br />
Rikard Wärme and Lars Juhlin<br />
Swedish Defence Research Agency NBC defence<br />
Cementvägen 20, 901 82 UMEÅ, SWEDEN. e-mail: rikard.warme@foi.se<br />
Syntheses of phosphorus halides are of interest in many genres of organic chemistry but the<br />
development of new methods and reagents for their synthesis have been scarcely explored. Working<br />
in small scale put extra demands on reactions as well as purification procedures to ensure that losses<br />
can be kept at a minimum. New reagents for these reactions which have properties like fast and<br />
clean reactions on micro scale with minimum work up procedures will be presented.<br />
The versatility of the reagents is further explored by the synthesis and use of solid supported<br />
reagents. The reagents are mild and compatible with many functional groups and selective towards<br />
phosphorus which enables the reactions to be used in a variety of systems. Clean reactions and easy<br />
work-up procedures ensures excellent yields which, only with a few exceptions, are quantitative.<br />
These reagents have proven suitable for micro scale synthesis especially in the solid phase<br />
application.<br />
169
O-79<br />
BIMETALLIC ACTIVATION OF WHITE PHOSPHORUS<br />
Dmitry Yakhvarov, a Maurizio Peruzzini, b Maria Caporali, b Pierluigi Barbaro, b Luca Gonsalvi, b Stefano Midollini, b<br />
Annabella Orlandini, b Fabrizio Zanobini, b Yulia Ganushevich a and Oleg Sinyashin a<br />
a<br />
A.E. Arbuzov Institute of Organic and Physical Chemistry, 420088 Kazan (Russia)<br />
b<br />
ICCOM CNR, 50019 Sesto Fiorentino (Italy)<br />
e-mail: yakhvar@iopc.knc.ru<br />
The reactivity of white phosphorus with transition metals is characterized by a vast diversity of<br />
bonding conditions and structural motifs resulting in a variety of Px units ranging from single<br />
phosphido atoms to high nuclearity polyphosphorus ligands. 1 When the tetraphosphorus array is<br />
preserved, different topologies are observed containing either the intact P4 molecule, behaving as a<br />
monohapto 2 or dihapto ligand, 3 or activated by opening one or more edges, generating acyclic P4<br />
chains. 1 These find their thermodynamic sinks by either bridging two metal moieties 4 or undergoing<br />
electrophilic or nucleophilic attacks by ancillary ligands to form new P-H, P-C and P-P bonds, 5 as<br />
for the unique cobalt complex [Co(Ph2PCH2PPh2PPPPPh2PCH2PPh2)]BF4 prepared more than two<br />
decades ago. 6 The mechanism of formation of the Co(I)-coordinated 1,2-disubstituted<br />
tetraphosphabutadiene zig-zag P6 chain has not been clearly understood as yet. Herein we describe<br />
the syntheses, characterizations and reactivity of new rhodium and iridium species related to this<br />
intriguing activation process and highlight the occurrence of an unexpected bimetallic P4 activation<br />
pathway to mediate the whole reaction. 7<br />
2<br />
P P<br />
M<br />
P P<br />
M = Rh, Ir<br />
+<br />
P<br />
P<br />
P<br />
P<br />
CH2Cl2 - 40 °C<br />
P<br />
P<br />
P<br />
M<br />
P<br />
P<br />
P<br />
P<br />
P<br />
P<br />
M<br />
P<br />
P<br />
P<br />
170<br />
2+<br />
- [M(dppm) 2] +<br />
Acknowledgements DY thanks INTAS (YS Fellowship Program Ref.Nr 03-55-2050) for<br />
financial support of this research and for funding his stay in Florence, Italy. Financial support from<br />
the Research and Educational Center of the Kazan State University - REC 007 (Y1-C-07-06) and<br />
Russian Foundation for Basic Research (RFBR 06-03-32247-a) is also gratefully<br />
Reference<br />
[1] M. Peruzzini, L. Gonsalvi, A. Romerosa, Chem. Soc. Rev. 2005, 34, 1038.<br />
[2] M. Di Vaira, S. Seniori Costantini, P. Stoppioni, P. Frediani, M. Peruzzini, Dalton Trans., 2005, 2234 and refs therein<br />
[3] M. Di Vaira, S. Seniori Costantini, P. Stoppioni, P. Frediani, M. Peruzzini, Acta Cryst. 2005, A61, C303-P.07.01.37.<br />
Book of abstracts, XX th IUCR Congress, Florence, Italy, 2005<br />
[4] Y. Peng, H. Fan, H. Zhu, H. Roesky, J. Magull, C. Hughes, Angew. Chem., Int. Ed. Engl., 2004, 43, 3443 and refs<br />
therein.<br />
[5] A.R. Fox, R.J. Wright, E. Rivard, P.P. Power, Angew. Chem., Int. Ed. Engl., 2005, 44, 7729 and refs therein.<br />
[6] F. Cecconi, C.A. Ghilardi, S. Midollini, A. Orlandini, J. Am. Chem. Soc. 1984, 106, 3667.<br />
[7] D. Yakhvarov, P. Barbaro, L. Gonsalvi, S. Mañas, S. Midollini, A. Orlandini, M. Peruzzini, O. Sinyashin, F.<br />
Zanobini, Angew. Chem., Int. Ed. Engl., 2006, 45, 4182<br />
RT
O-80<br />
ENVIRONMENTALLY BEING CHEMICAL CONVERSION OF CO2 INTO ORGANIC<br />
CARBONATES CATALYZED BY PHOSPHINIUM SALTS<br />
J.S.Tian, C.X.Miao, J.Q.Wang, F.Cai, Y.Du, Y.Zhao, L.N.He*<br />
State Key Lab of Elemento-organic Chemistry, Nankai University, Tianjin, 300071, P. R. China<br />
Dimethyl carbonate (DMC), one of useful organic carbonates, has been drawing much attention<br />
as a safe, noncorrosive, and environmentally friendly building block for the production of<br />
polycarbonate and other chemicals. Also, DMC is of interest as an additive to fuel oil owing to the<br />
high octane number, reducing particulate emission from diesel engines. Therefore, development of<br />
DMC production technology and fuel properties has become important for oil and chemical<br />
industry. A considerable effort has been devoted to the non-phosgene accesses to DMC. In this<br />
context, the two-step transesterification process is very attractive in view of the so-called<br />
“Sustainable Society’’ and ‘‘Green Chemistry’’.<br />
Cat.I: BrBu3PPEG6000PBu3Br; Cat. Ⅱ: K2CO3/ PEG6000; Cat.: K2CO3/<br />
BrBu3PPEG6000PBu3Br<br />
Simple process for DMC synthesis from CO2, epoxide and MeOH<br />
The cycloaddition of propylene oxide and CO2 to form propylene carbonate promoted by<br />
phosphonium salt convalently bound to polyethylene glycol (PEG), and the transesterification of<br />
propylene carbonate with methanol to DMC mediated by PEG-supported K2CO3, were separately<br />
investigated. Single supported catalyst (K2CO3/BrBu3PPEG6000PBu3Br) was shown to be active for<br />
DMC synthesis from propylene oxide, CO2 and methanol under mild reaction conditions, even<br />
under low CO2 pressure (2 bar). The effects of various reaction variables on the activity and<br />
selectivity performance were discussed in details. The catalyst was readily separated and reused<br />
without catalyst leaching detected by 31 P NMR. Notably, excellent yield of DMC and complete<br />
conversion of propylene carbonate were reached under optimized reaction conditions. This<br />
procedure was also successfully applied to the synthesis of other dialkyl carbonates, and eliminates<br />
the requirement for toxic and wasteful feedstocks such as phosgene and carbon monoxide.<br />
References<br />
[1] a) M. A. Pacheco, C. L. Marshall, Energy Fuels,1991, 11, 2; b) P. Tundo, Pure Appl. Chem., 2001, 73,1117; c) S.<br />
Fujita,B.M. Bhanage, Y.Ikushima, M.Arai, Green Chem., 2001, 3, 87.<br />
[2] a) J. C. Choi, L. N. He, H. Yasuda, T. Sakakura, Green Chem., 2002, 4, 230; b) J. S. Tian, J. Q. Wang,J. Y. Chen, J.<br />
G. Fan,F. Cai, L. N. He,Appl. Catal. A: Gen., 2006, 301(2), 215; c) J. Q. Wang, X. D.Yue, F. Cai, L. N. He, Catal.<br />
Commun.,2007, 8, 167; d) J. Q. Wang, D. L. Kong, J.Y. Chen, F. Cai, L. N.He, J. Mol. Catal. A: Chem., 2006, 249,<br />
143; e) Y. Du, J.-Q.Wang, J.-Y. Chen, F. Cai, J.-S. Tian, D.-L.Kong, L.-N. He,Tetrahedron Lett., 2006, 47(8), 1271;<br />
f) Y. Du, F. Cai, D. L. Kong,L. N. He, Green Chem., 2005, 7, 518.<br />
171
O-81<br />
TRANSITION METAL COMPLEXES CONTAINING PHOSPHENIUM AND PHOSPHITE<br />
LIGANDS: FORMATION AND THEORETICAL APPROACH<br />
Hiroshi Nakazawa, * Katsuhiko Miyoshi, # and Keiko Takano §<br />
*Department of Chemistry, Graduate School of Science, Osaka City University, Osaka, Japan, # Department of<br />
Chemistry, Graduate School of Science, Hiroshima University, Higashi-Hiroshima, Japan, and § School of Integrated<br />
Science, Graduate School of Humanities and Science, Ochanomizu University, Tokyo, Japan.<br />
Transition metal complexes containing phosphenium have attracted considerable attention<br />
because of double bond character between M and P. Phosphenium is isolobal with a singlet<br />
carbene and silylene, and a phosphenium ligand shows electrophilicity. For a phosphenium<br />
phosphite complex, two structures (nonbridging and bridging forms) are conceivable. This paper<br />
reports formation of phosphenium phosphite complexes, the preferential structure, and its<br />
theoretical approach.<br />
M<br />
N Me<br />
O<br />
N<br />
P N<br />
O<br />
N<br />
C<br />
P<br />
Mo OMe<br />
O C CO<br />
C<br />
O<br />
N Me<br />
N<br />
O<br />
P N<br />
O<br />
N<br />
C P<br />
Mo OMe<br />
O C<br />
OMe<br />
P<br />
C N<br />
O<br />
N<br />
P<br />
P<br />
OR<br />
+<br />
nonbridging form bridging form<br />
phosphenium phosphite complex<br />
TMSOTf<br />
TMSOTf<br />
172<br />
M<br />
P<br />
P<br />
O C<br />
O C<br />
OR<br />
N N<br />
P<br />
Mo<br />
C<br />
O<br />
1a 1b<br />
2a 2b<br />
+<br />
+<br />
N<br />
N<br />
P<br />
OMe<br />
CO<br />
+<br />
N N<br />
O C<br />
O C<br />
P<br />
Mo<br />
C<br />
O<br />
N<br />
N<br />
P<br />
OMe<br />
OMe<br />
P<br />
N N<br />
OTf<br />
Molybdenum carbonyl complexes with phosphites (1a, 2a) react with TMSOTf to give the<br />
corresponding cationic phosphenium phosphite complexes (1b, 2b) by single OMe - abstraction<br />
from the coordinating phosphite (see eqs 1 and 2). The X-ray structure analyses and the NMR<br />
spectra of the products showed that the original configuration around the Mo is retained and a<br />
nonbridging form is adopted. DFT calculations have been incorporated to study the preference of<br />
the nonbridging form for phosphenium phosphite complexes, together with the preference of the<br />
bridging form for the analogous silylene alkoxysilyl complexes, and found that the bridging<br />
requires larger geometrical changes for phosphenium phosphite complexes than for silylene<br />
alkoxysilyl complexes.<br />
OTf<br />
(1)<br />
(2)
O-82<br />
THE FORMATION OF SPHERICAL GIANT MOLECULES AND<br />
DYNAMIC BEHAVIOUR OF SUPRAMOLECULAR ASSEMBLIES BASED<br />
ON PN LIGAND COMPLEXES<br />
Manfred Scheer*, L. J. Gregoriades, R. Merkle, B. P. Johnson and F. Dielmann<br />
Institut für Anorganische Chemie, Universität Regensburg, Regensburg, D-93040, Germany; e-mail:<br />
manfred.scheer@chemie.uni-regensburg.de<br />
In contrast to common approaches in supramolecular chemistry, our research is focused on the<br />
use of Pn-ligand complexes as connecting units for different metal centres to form coordination<br />
polymers as well as soluble spherical giant clusters. It has already been shown that the tetrahedrane<br />
cluster [Cp2Mo2(CO)4(μ,η 2 -P2)] and the sandwich complexes [Cp*Fe(η 5 -P5)] can act in the reaction<br />
with Cu(I) halides as efficient building blocks for the construction of oligomers, 1D and 2D<br />
polymers, as well as fullerene-like aggregates [1]. Recently we found that the cyclo-P4 containing<br />
ligand complex [Cp''Ta(CO)2(η 4 -P4)] can also be used as a starting unit for the formation of<br />
spherical supramolecular aggregates [2] (see below).<br />
In contrast, the reaction of different Pn-ligand complexes with the Ag I salt of the weakly<br />
coordinating anion [Al{OC(CF3)3}4]¯ leads to novel polycationic polymers, which show in solution<br />
extensive dissociation and exhibit dynamic behaviour [3]. The talk will focus on the structure and<br />
properties of the spherical giant molecules as well as on the dynamic behaviour of the polycationic<br />
polymers.<br />
Reference<br />
[1] a) Bai, J.; Virovets A. V.; Scheer, M., Science, 2003, 300, 781-783. b) Scheer, M.; Bai, J.; Johnson, B. P.; Merkle,<br />
R.; Virovets, A. V.; Anson, C. E.; Eur. J. Inorg. Chem. 2005, 4023-4026.<br />
[2] Johnson, B. P.; Dielmann, F.; Balázs, G.; Sierka, M.; Scheer, M.; Angew. Chem. Int. Ed., 2006, 45, 2473-2475.<br />
[3] Scheer, M.; Gregoriades, L. J.; Virovets, A. V.; Kunz, W.; Neueder, R.; Krossing, I.; Angew. Chem. Int. Ed. 2006,<br />
45, 5689-5693.<br />
173
O-84<br />
THE CHEMICAL PROPERTIES OF ALKALI METALS HEPTAPHOSPHIDES<br />
V.А.Miluykov a , O.G.Sinyashin a , А.V.Kataev a , P.Lonnecke b , E.Hey-Hawkins b<br />
а A.E.Arbuzov Institute of organic and physical chemistry russan academie of sciences, Kazan, Russia,<br />
miluykov@iopc.knc.ru<br />
b<br />
Institut für Anorganische Chemie der Universität Leipzig,<br />
Leipzig, Germany hey@rz.uni-leipzig.de<br />
The alkali metals polyphosphides (homopolyatomic phosphorus clusters, Zintl-anions) are<br />
currently in focus of research both as intermediates of elemental phosphorus transformation in<br />
organic phosphorus compounds and as syntons for construction of polynuclear complexes and<br />
clusters.<br />
We have found that heptaphosphid 1 react with alkyltosylates depend on stoichiometry of<br />
reagents with formation of mixture of symmetric and asymmetric isomers of heptaphosphine 2 or<br />
asymmetric sodium dialkylheptaphosphide 3 only.<br />
R<br />
P<br />
P<br />
P P<br />
P<br />
3Na<br />
P<br />
P<br />
P<br />
P<br />
P P<br />
P<br />
P<br />
P + 3RTos<br />
R<br />
R<br />
R<br />
P P<br />
P<br />
asym, sym<br />
P Na<br />
R<br />
P P<br />
P<br />
asym<br />
+ 2RTos<br />
3 1<br />
2<br />
We have also found a new reaction of heptaphosphide 1 with cyclopropenylic complexes of<br />
nickel - formation of sodium 1,2-diphosphacyclopentadienide.<br />
P<br />
P<br />
P P<br />
3Na<br />
P P<br />
P<br />
L = PhMe 2P, none<br />
Ph<br />
+<br />
Ph<br />
Ni<br />
L Br<br />
L<br />
Ph<br />
Ph<br />
Ph<br />
-<br />
P P<br />
Na<br />
Ph<br />
The protonation of 1,2-diphosphacyclopentadienide anion lead to C-H phosphadiene which is<br />
involved in anomaly [2+2] cycloaddition reaction with formation<br />
rac-trans-1,2,6,7-tetraphospha-3,4,5,8,9,10-hexaphenyltricyclo[5.3.0.0 2,6 ]-3,9-decadien withy high<br />
yield.<br />
Ph<br />
Ph<br />
-<br />
P P<br />
Na<br />
Ph<br />
[H + ]<br />
Ph<br />
Ph<br />
P P<br />
Ph<br />
H<br />
174<br />
P P<br />
Ph<br />
Ph<br />
Ph<br />
P P<br />
Ph<br />
H P<br />
P<br />
H<br />
Ph<br />
The authors thank the Deutsche Forschungsgemeinschaft (436RUS 113/760/0-1) and RFBR<br />
(04-03-04102) for financial support of this work.<br />
Ph<br />
Ph<br />
H<br />
Ph<br />
Ph
O-93<br />
SURFACE PROPERTIES AND CATALYTIC ACTIVITY OF SODIUM ZIRCONIUM<br />
PHOSPHATE IN DEHYDRATION OF METHANOL TO DIMETHYL ETHER<br />
M.V. Sukhanov a , M.M. Ermilova b , N.V. Orekhova b , V.I. Pet'kov a , G.F. Tereschenko b<br />
a Nizhni Novgorod State University, Nizhni Novgorod, Russia, 603950<br />
b Topchiev Institute of Petrochemical Synthesis, Moscow, Russia, 119991<br />
The development of competitive, effective, and environmentally safe fuels is among the global<br />
trends of progress in chemistry. Dimethyl ether (DME) has received a worldwide attention as a<br />
clean alternative fuel for diesel engines since it has a thermal efficiency equivalent to the traditional<br />
diesel fuel, lower NOx emission, lesser carbon particulates, near-zero smoke and lesser engine noise.<br />
In addition, DME is used as a raw material for making chemicals. At present, DME is produced on<br />
the commercial scale by dehydration methanol on mechanical mixtures of aluminum, silicon, and<br />
boron oxides or on molecular sieves. It is still a topical task to develop new catalyst for this process,<br />
which should be more active, selective, and less subject to coking.<br />
Zirconium-containing phosphates with a structure of the sodium zirconium phosphate<br />
(NaZr2(PO4)3, NZP) are of interest as catalysts for dehydration of alcohols because of the high<br />
stability of their structural skeleton, which ensures their resistance to action of water at high<br />
temperature and enables regeneration of a catalyst at elevated temperatures without any changes in<br />
its phase composition. The presence work has been examined the surface area, and surface acid<br />
properties of sodium zirconium phosphate and their influence on methanol dehydration to DME.<br />
Influence of the temperature synthesis of catalyst on methanol dehydration was also studied.<br />
The samples of sodium zirconium phosphates were prepared by the precipitating method starting<br />
from the following reagents: NaNO3, ZrOCl2·8H2O and H3PO4. Precipitates were dried at 353 and<br />
473 K and thermally treated from 873, 1073 and 1273 K during at 24 h without intermediate<br />
regrinding. Phosphate samples were characterized using X-ray powder diffraction, infrared<br />
spectroscopy and microprobe analysis. The BET specific surface areas of the samples were<br />
determined. The acid properties were measured by TPD of NH3. Dependence of specific surface<br />
area and acid properties of sodium zirconium phosphate from temperature treated of sample was<br />
founded.<br />
The conversion of methanol was studied in a convenient Ar-flow system, operated at atmospheric<br />
pressure, in the temperature range from 450 to 750 K. The products of alcohols conversions were<br />
analyzed by gas chromatography. The sample of sodium zirconium phosphates, which thermally<br />
treated from 873 K, was shown the highest specific surface area, acid properties, and catalytic<br />
activity in dehydration of methanol. The alcohol conversion on this sample approaches the<br />
equilibrium value 88-90 % at the 600 K. Dependence of methanol conversion from reactor<br />
temperature (from 450 to 750 K range) and from of flow rate of the alcohol vapor at a reactor (from<br />
0.2 to 1.3 ml·min-1) were founded. It was shown that the sodium zirconium phosphate maybe<br />
compare well with known commercial catalysts for methanol dehydration [1, 2].<br />
The work is supported by the Russian Foundation for Basic Research (Project № 06-03-08064).<br />
References:<br />
[1] V. Vishwanathan, Hyun-Seog Roh, Jae-Woo Kim, and Ki-Won Jun, Catal. Lett. 2004. V. 96. P. 23-28.<br />
[2] F. Yaripour, F. Baghaei, I. Schmidt, J. Perregaard, Catal. Com. 2005. V. 6. P. 147-152.<br />
175
P-10<br />
DESIGNING NEW METALLO-ORGANIC CATALYSTS FOR THE ASYMMETRIC<br />
PHOSPHO-ALDOL REACTION<br />
Alexandra C. Gledhill, Tracy D. Nixon, Terence P. Kee<br />
School of Chemistry, University of Leeds, Woodhouse Lane, Leeds LS2 9JT, UK<br />
Email: chm1acg@leeds.ac.uk<br />
The enantioselective hydrophosphonylation of carbonyls is a highly valuable phospho-transfer<br />
reaction for the synthesis of α-functionalised phosphonate esters which have a large number of<br />
applications in bioorganic science including anti-viral agents, anti-biotics, anti-tumour activity,<br />
transition state models, nucleotide technology and biophosphate mimics. For each of these<br />
applications, the stereochemistry of the phosphonate is crucial to elicit the required properties.<br />
Through the manipulation of catalysts it is possible to control asymmetry and enantioselectivity of<br />
this reaction.<br />
O<br />
RO<br />
P<br />
H<br />
RO<br />
H<br />
O<br />
RO<br />
RO<br />
P<br />
CAT CAT<br />
O<br />
R' H<br />
176<br />
O<br />
RO<br />
P<br />
RO<br />
Here we describe how, through exploration into the synthesis and characterisation of aluminium<br />
complexes based upon the (R,R)-salcyan framework and by applying such complexes as catalyst<br />
precursors for the homogeneous phospho-aldol reaction, increased stereocontrol can be achieved<br />
with {(R,R)-[salcyan( t Bu)2]Al(μ-OH)}2 affording products with e.e. ≤ 62% and preliminary tests<br />
showing that ligands adding extra steric bulk and offering a greater degree of alkyl branching.<br />
Molecular modelling has been carried out using Hyperchem 7.0 (Hypercube, Florida) at the<br />
semi-empirical PM3 level the results of which have enabled us to identify a number of complexes<br />
as potential catalysts for the phospho-aldol reaction which are to be synthesised and tested for their<br />
catalytic ability.<br />
Scheme 1: The currently accepted mechanistic overview of the phospho-aldol reaction for the<br />
synthesis of α-functionalised phosphonate esters.<br />
H H<br />
N<br />
Al<br />
N<br />
O O<br />
OH<br />
R'<br />
O<br />
H<br />
RO<br />
RO<br />
O<br />
P<br />
R'<br />
OH
P-15<br />
ELECTROSYNTHESIS OF METAL PHOSPHIDES ON THE BASIS OF<br />
WHITE PHOSPHORUS<br />
Budnikova Yu.H. * , Krasnov S.A., Gryaznova T.V., Tazeev D.I., Sinyashin O.G.<br />
Institute of Organic and Physical Chemistry of Russian Academy of Sciences, Kazan, Russia,<br />
e-mail: yulia@iopc.knc.ru<br />
Reduction of white phosphorus in the coordination sphere of the electrochemically generated<br />
metal(0) complexes with σ-donor ligands was shown to be possible and accompanied by the<br />
transformation of P4 into the metal phosphides [1].<br />
M n+ L + ne M 0 L L = bipy, solvent, M = Ni, Co, Pd, Rh, Ir...<br />
M 0 L + P 4 product [M-P]<br />
6 Ni0L + P4<br />
6 Ni0PPh3 + P4<br />
+ 2e<br />
Ni(II)L<br />
+ P4<br />
Ni(0)L<br />
Ni(II)(P4)L<br />
2 Ni3P2L L = bipy, phen<br />
DMF<br />
-PPh3<br />
+ P4<br />
Ni3P2L<br />
+ 2e<br />
177<br />
2 Ni3P2(DMF)<br />
S spec. = 200 m2/g<br />
L = bipy<br />
Initially the black colloidal solution of stabilized Ni-clusters was formed. One day later nickel<br />
deposits precipitates. Scanning tunnel microscopy was used for determine the size of the<br />
nanoparticles -~15-20 nm. The surface area of the ultrafine amorphous materials, manufactured in<br />
traditional way, e.g., by the vapor deposition, is usually very small, 0.1-0.01 m 2 /g [12]. It is too<br />
small to use these materials in the industrial catalysis due to low productivity per the catalyst weight.<br />
The ultrafine amorphous alloys, obtained by chemical reduction, has more large surface area –<br />
30-130 m 2 /g and much more effective. We detected that phosphide Ni3P2bipy, prepared from the<br />
electrochemically generated Ni(0)bipy and white phosphorus, has a very large surface area – 200<br />
m 2 /g, i.e. presents the so-called ‘ultrafine material’. Thus, the proposed synthetic procedure allows<br />
to obtain the ‘ultrafine materials’ hard to be proceeded in the regular way, what allows to use these<br />
materials as the basis for the development of new catalysts.<br />
Acknowledgments: RFBR (04-03-32830, 05-03-08039 ofi-p), INTAS.<br />
Reference<br />
[1] Yu.H. Budnikova, D.I. Tazeev, B.A. Trofimov, O.G. Sinyashin. Electrochem. Comm. 6 (2004) 700–702
P-76<br />
NOVEL SYNTHETIC ROUTES TO PHOSPHORUS ORGANIC COMPOUNDS ON THE<br />
BASIS OF THE ELEMENTAL PHOSPHORUS (P4)<br />
O. G. Sinyashin, E. S. Batyeva, E.V. Platova, E.K. Badeeva, L.I. Kursheva<br />
A.E.Arbuzov Inatitute of Organic and Physical Chemistry of Russian Academy of Sciences, Kazan Scientific Center,<br />
Kazan, Arbuzov Str.8, 420088, Russi;a.<br />
Reactions of elemental phosphorus (P4) with proton containing reagents (water, diols, thiols) in<br />
the presence of compounds with bidentate character, which promote the cleavage of the P4<br />
tetrahedron, have been studied. As such kind of compounds we have proposed and used amines,<br />
which form appropriate complexes upon the interaction with organic (ethylene oxide) and inorganic<br />
(sulfur) reagents as well as bidentate complexes of trialkyltrithiophosphites with transition metal<br />
halides.<br />
Reaction of the P4 with water in the presence of tertiary ammonium bases, i.e.,<br />
β-hydroxyethyltrimethylammonium (choline), has been performed. The latter is formed at the<br />
interaction of trimethylamine with ethylene oxide in aqueous medium, and promotes the cleavage of<br />
the P4 tetrahedron. The reaction is accompanied by the elimination of hydrogen (H2) instead of<br />
phosphine, as it is usually performed in the presence of other tertiary amines (triethyl-, tributyl-,<br />
dimethylbenzyl amines). The same result was obtained in the reaction of P4 and trimethylamine,<br />
ethylene oxide and water. This method is proposed as the general approach for the synthesis of<br />
phosphoric acids and their derivatives on the basis of the reaction of elemental phosphorus (P4) with<br />
water in the presence of tertiary ammonium base - β-hydroxyethyltrimethylammonium (choline).<br />
Thus, novel convenient technological method for the preparation of hypophosphiteβ-hydroxyethyltrimethylammonium<br />
(cholinehypophosphite) from white phosphorus, choline and<br />
water, or from white phosphorus, trimethylamine, ethylene oxide and water has been developed.<br />
It has been shown for the first time that interaction of white phosphorus and sulfur with aliphatic<br />
mercaptans in the presence of amines - (diethyl-, triethylamine, piperidine)- results in the new<br />
pathway – the formation of ammonium salts 1,2,3,4-tetrathiol-1,2,3,4-tetrathiontetraphosphetanes.<br />
Reactions of white phosphorus and sulfur with 1,2-ethylene- and 1,3-propylene glycols proceed<br />
analogously in the presence of piperidine. On the contrary the formation of tetrathiophosphates is<br />
observed in reaction of white phosphorus and sulfur with aliphatic mercaptans in the presence of<br />
Cu(I) halide complexes with thiophosphites.<br />
Acknowledgements<br />
The grants of the Russian Foundation for Basic Research (06-03-32180) and Program7 of the DCMS RAS are<br />
gratefully acknowledged.<br />
178
P-99<br />
REACTION OF 2-R-BENZO[D]-1,3,2-OXAZAPHOSPHORIN-6-ONES WITH<br />
HEXAFLUOROACETONE<br />
V.F.Mironov 1,2 , Yu.Yu.Borisova 1 , L.M.Burnaeva 1 , A.T.Gubaidullin 2 , I.A.Litvinov 2 ,<br />
G.A.Ivkova 1 , N.K.Amerkhanova 1 , I.V.Konovalova 1<br />
1 Kazan State University, Kremlevskaya Str. 18, Kazan, 420008 Russia<br />
2 A.E.Arbuzov Institute of Organic and Physical Chemistry, Russian Academy of Sciences,<br />
Arbuzov Str. 8, Kazan, 420088, Russia, e-mail: mironov@iopc.knc.ru<br />
The six-membered cycle of 2-R-benzo[d]- and 2-R-naphtho[2,3-e]-1-3-2-dioxaphosphorin-4-ones<br />
undergoes the cycloexpansion in reaction with activated carbonyl compounds to give<br />
the unsymmetrical functionalized seven-membered heterocycles, namely benzo[d]- and<br />
naphtho[1,2-f]-1,3,2-dioxaphosphepines. These compounds obtained with using of<br />
hexafluoroacetone can be used in further synthesis of the fluorinated ketones, which are not<br />
available for obtaining by the other methods. Here the new results concerning the application of the<br />
reaction of hexafluoroacetone with the cyclic phosphorylated derivatives of phenylantranilic acid<br />
are reported. Benzo[d]-1,3,2-oxaazaphosphorin-6-ones (1,2) were synthesized for the first time by<br />
the reaction of phenylantranilic acid with alkyl- and alkoxydichlorophosphines in the presence of<br />
NEt3. The reaction of compounds (1,2) with hexafluoroacetone was found to yield the new<br />
heterocycles – substituted benzo[d]-1,3,2-oxaazaphosphepines (3,4). Compound (5) was obtained as<br />
a result of hydrolysis of (3,4).<br />
1,2<br />
Ph<br />
N R<br />
P<br />
O<br />
O<br />
O<br />
CF3CCF3<br />
Ph O<br />
N R<br />
P<br />
O<br />
CF3<br />
3,4 O CF3<br />
H2O<br />
5<br />
R = Ph (1,3), OEt (2,4)<br />
179<br />
NH Ph<br />
OH<br />
The reaction includes a nucleophilic attack of phosphorus on carbon with the formation of<br />
P + –C–O – -betaine, P + –C–O – → P + –O–C – -rearrangement and intramolecular attack of the carbon<br />
anionic center on encocyclic carbonyl group.<br />
C<br />
C<br />
C 7<br />
P 2<br />
O 1<br />
C 8<br />
O 2<br />
O 7<br />
C 10<br />
F 1<br />
F 2<br />
F 3<br />
F 4<br />
N 3<br />
C 6a<br />
C 6b<br />
F 5<br />
F 6<br />
C<br />
C<br />
C<br />
C<br />
C 9 C<br />
The structure of (3,4) was confirmed by 1 H, 13 C, 31 P NMR and IR spectroscopy as well as by the<br />
single crystal X-ray diffraction (see figure). The conformation of phosphepine’s heterocycle is a<br />
distorted boat with planar fragment N 3 C 6a C 6b C 7 .<br />
Thus, the proposed synthetic approach including the reaction between the P(III)-cyclic<br />
derivatives of hydroxycarbonic acid, like heterocycles (1,2), and carbonyl compounds is perspective<br />
for the synthesis of phosphepines and fluorinated ketones.<br />
C<br />
C<br />
C 3<br />
C 6<br />
C 4<br />
C 5<br />
C<br />
C<br />
C<br />
O<br />
CF3<br />
CF3
P-117<br />
STUDY ON STRUCTURE AND PROPERTIES OF AMORPHOUS Ni-Cu-P ALLOY<br />
COATINGS PREPARED BY ELECTROLESS PLATING<br />
Xu Ruidong, Wang Junli,Guo Zhongcheng<br />
Faculty of Materials and Metallurgical Engineering, Kunming University of Science and Technology, Kunming 650093,<br />
China<br />
The components, phase structure and hardness of Ni-Cu-P alloy coatings prepared by electroless<br />
plating, were studied. The results show that the nickel and phosphorus contents in coating decrease<br />
and copper content increases with increasing CuSO4·5H2O concentration in bath. Owning to the<br />
characteristic of priority of Cu deposition, which makes Cu/Ni mass ratio in coating be higher than<br />
that in bath. X-ray diffraction displays that Ni-Cu-P alloy coating is amorphous state as-deposited<br />
and heat-treated at 300℃, there are some thermodynamics equilibrium phase deposited such as<br />
Ni3P and Cu3P in coating after that heat treatment temperature is higher than 400℃, and it has<br />
turned into crystalline state. The hardness test shows that when heat treatment temperature is lower<br />
than 400℃, the structure of coatings changes and the distortion in the crystal lattice gets serious,<br />
making the Ni-Cu-P alloy coating hardness increase. At 400℃, since a large number of Ni3P phase<br />
appears and precipitation hardening occurs, the coating hardness reaches peak value (845Hv). With<br />
continuously increasing heat treatment temperature, crystalline particles of nickel solid solution<br />
grow and Ni3P particles aggregate and coarsen, and the composite coating softens, making the<br />
coating hardness decrease.<br />
180
P-139<br />
DETERMINATION OF DEXAMETHASONE SODIUM PHOSPHATE IN MEDICAMENT<br />
BY FLUORESCENCE PROBE OF Tb 3+ -TIRON COMPLEX<br />
Chaobiao Huang a, *, Zhenrong Yu b , Libin Zhou a<br />
a College of Chemistry and Life Science ,Zhejiang Normal Univiersity , Jinhua 321004,China<br />
b Deqing No.3 High School,Zhejiang,China<br />
A sensitive method by fluorescence quenching for the determination of dexamethasone sodium<br />
phosphate is proposed.The method is based on the ability of phosphate to inhibit the formation of a<br />
strong fluorescent complex of Tb 3+ with Tiron.The fluorescence intensity trend equilibrium after<br />
20 minutes reaction of dexamethasone sodium phosphate and Tb 3+ -tiron complex. The optimal<br />
conditions for the determination of dexamethasone sodium phosphate are studied,and the<br />
possibilities of spectrofluorimetric measurements of the system are studied under optimal<br />
conditions (pH 7.5 in 0.01 mol/L Tris-HCl bufer).The linear range of the determination is 2.5×10 -<br />
7 -6 -8<br />
~4×10 mol/L and the detection limit is 6.2×10 mol/L, and the RSD of 11 times determination<br />
are 2.2% and 0.8% for 5×10 -7 mol/L and 1×10 -6 mol/L, respectively.The method has been applied<br />
to determine dexamethasone sodium phosphate in dexamethasone sodium phosphate injections.<br />
Keywords: Tb 3+ -tiron complex, fluorescence quenching, dexamethasone sodium phosphate,<br />
medicament<br />
References<br />
1 Editorial Committee of Pharmacopoeia of People’s Republic of China. Pharmacopoeia of People’s Republic of<br />
China(Part II).Beijing:Chemical Industry Press,2005<br />
2 Pang Yinuo,Zhang Yan,Zhang Zhirong,et al. Chin Hosp Pharm J.,2003,23(5):257~260<br />
3 Bi Xueyan,Li Liping,Li Li,Yu Weibing. Pharm J Chin PLA.,2006,22 (3):235~236<br />
4 Yang Yanwei,Zhu Ying,Zhang Weiqiang et al. J Environ Health., 2006, 23 (3):264~266<br />
181
Symposium 4<br />
Nucleotides and Oligonucleotides-From Basic to<br />
Medicinal Applications; Biological Aspects<br />
of Phosphorus Chemistry
KL-14<br />
THE CHEMICAL BIOLOGY OF HISTIDINE TRIAD NUCLEOSIDE<br />
BINDING PROTEINS<br />
Carston R. Wagner<br />
Departments of 1Medicinal Chemistry and 2Chemistry, University of Minnesota, Minneapolis,<br />
Minnesota 55455, USA, *wagne003@umn.edu<br />
HIT enzymes are a ubiquitous superfamily consisting primarily of nucleoside phosphoramidases,<br />
dinucleotide hydrolyases and nucleotidylyl transferase. The distinguishing feature of these enzymes<br />
is an active site motif composed of the sequence, His-X-His-X-His-XX, where X is a hydrophobic<br />
residue. Three primary families of HIT have been identified. The first and most ancient is the<br />
histidine triad nucleotide binding protein (Hint). Hint homologs isolated from rabbit, human,<br />
chicken, yeast and E. coli. Mammalian Hint1 has been suggested to have tumor suppressor activity<br />
in a hint1-knock out mice model and human non-small cell lung carcinoma cells. Related to this<br />
observation, the expression of hHint1 has been shown to be a potential regulator of apoptosis.<br />
Recently, we and others have demonstrated that Hints are purine nucleoside phosphoramidases. In<br />
addition, we have discovered that Hints interact with amino acyl-tRNA synthetases by efficiently<br />
hydrolyzing amino acid adenylates. These are first example of natural substrates for these enzymes.<br />
Our laboratory has engaged in designing anticancer and antiviral pronucleotide based on our<br />
understanding of Hint structure-activity relationships. We are also engaged in elucidating the<br />
biological mechanism and function of Hints. The lecture will discuss both aspects of our research.<br />
183
KL-16<br />
STUDIES ON MODIFIED OLIGONUCLEOTIDES<br />
Lihe Zhang<br />
Peking University, School of Pharmaceutical Sciences 38 Xue-Yuan Road, Beijing, 100083, P.R.China<br />
Email: zdszlh@mail.bjmu.edu.cn<br />
184
KL-21<br />
KINASE AND KINASE INHIBITOR AS ANTICANCER THERAPEUTICS<br />
Chen Li<br />
Roche R&D Center (China) Ltd., 720 Cai Lun Road, Building 5, Pudong, Shanghai 201203, P.R. China<br />
185
KL-40<br />
STEREOCHEMISTRY OF ENZYME-ASSISTED P-N BOND CLEAVAGE IN<br />
ADENOSINE 5'-PHOSPHORAMIDATES AND –PHOSPHORAMIDOTHIOATES<br />
Agnieszka Krakowiak, Renata Kaczmarek, Janina Baraniak, Michał Wieczorek<br />
and Wojciech J. Stec<br />
Department of Bioorganic Chemistry, Centre of Molecular and Macromolecular Studies, Polish Academy of Sciences,<br />
112 Sienkiewicza Str., 90-363 Łódź, Poland<br />
The enhancement of the therapeutic activity of antiviral and anticancer nucleoside analogs and<br />
suppression of their side-effects is a continuing goal of several research establishments. Several<br />
prodrug approaches have been designed including phosphoramidate di- and mono-esters derived<br />
from amino acids. Because of the suggestion that Hint hydrolases might be responsible for<br />
nucleoside monophosphoramidate prodrug activation in vivo,1 elucidation of mechanism of<br />
phosphoramidase activity appeared important.<br />
Here we report on the stereochemistry of the reaction catalyzed by rabbit Hint1 using the<br />
P-diastereoisomers of adenosine-5’-O-[N-(tryptophanylamide)]phosphoramidothioate (AMPS-Trp).<br />
Stereocontrolled synthesis of the diastereoisomer substrates of rHint1 was feasible via our<br />
oxathiaphospholane approach.2 The absolute configuration at phosphorus of individual species has<br />
been assigned by X-ray analysis. We performed the experiment with rHint1 degradation of<br />
RP-AMPS-Trp to the AMPS-[18O] in the presence of H218O, sufficient for stereochemical<br />
analysis designed earlier in this Laboratory.3 MALDI-TOF MS analysis of the final product<br />
unambiguously proved the presence of [18O] isotope in the resulting heptamer (d[(AP)5A]PS18OA.<br />
Such result indicated that the overall process of the cleavage the P-N bond proceeds with<br />
stereochemical retention of configuration what is consistent with the participation of a covalent<br />
enzyme-substrate complex. To our best knowledge this is the first report of the stereochemical<br />
course of enzymatic P-N bond scission. The result is in agreement with the mechanism of action of<br />
two other P-O cleaving enzymes belonging to different branches of the HIT superfamily, namely<br />
Fhit hydrolase (second branch) and galactose-1-phosphate uridylyltransferase (GalT, third branch).4<br />
Additionally, we observed extensive loss of sulfur from AMPS as a sequential process<br />
accompanying P-N bond cleavage in the action of Hint-1 on nucleoside<br />
5’-O-phosphoramidothioates, and our preliminary results have shown that this desulfuration process<br />
is not ribonucleotide specific. Since the Hint enzyme has been shown to have homologs in all forms<br />
of life,4 our observations may become pertinent to the further elucidation of the metabolism of<br />
nucleoside 5’-O-phosphorothioates, formed e.g. as primary products of degradation of antisense<br />
oligonucleotide phosphorothioates by 3’-exonucleases. Additional studies concerning the<br />
elucidation of the mechanism of the enzyme-catalysed desulfuration process are in progress.<br />
Reference<br />
1.P. Bieganowski, P. N. Garrison, S. C. Hodawadekar, G. Faye, L. D. Barnes and C. Brenner, J. Biol. Chem., 2002, 277,<br />
10852-10860.<br />
2.W. J. Stec, B. Karwowski, M. Boczkowska, P. Guga, M. Koziołkiewicz, M. Sochacki, M. W. Wieczorek, and J.<br />
Błaszczyk, J. Am. Chem. Soc., 1998, 120, 7156-7167.<br />
186
KL-42<br />
POLYPHOSPHATES FOR DRUG AND GENE DELIVERY<br />
Renxi Zhuo, Shiwen Huang<br />
Key Laboratory of Biomedical Polymers, Ministry of Education, Department of Chemistry, Wuhan University, Wuhan<br />
430072, P.R.China<br />
Email: bmp@whu.edu.cn<br />
Synthetic biodegradable polymers, such as aliphatic polyesters, aliphatic polycarbonates,<br />
poly(ortho esters),polyanhydrides,polyphosphates etc, have been widely investigated and<br />
applied in biomedical field. Among the current biodegradable polymers, polyphosphates have<br />
attracted great attention because of their biocompatibility and pendant functionality. Additionally,<br />
polyphosphates, as copolymerization components, can increase the solubility of copolymers in<br />
common solvents and lower the glass-transiton temperature. As a result, the processability of<br />
copolymers can be greatly improved. We here report the synthesis of a series of novel<br />
polyphosphates and application in drug and gene delivery.<br />
Biodegradable polyphosphates copolymers were synthesized by ring-opening copolymerization<br />
of alkyl ethylene phosphate with a variety of cyclic monomers, such as D, L-lactide, cyclic<br />
carbonate, p-dioxanone. It was found that the introduction of phosphates into polylactide,<br />
polycarbonate and poly(p-dioxanone) would enhance the degradation rates of the copolymers.<br />
Water-soluble cationic polyphosphoramidates (PPAs) with different pendant primary amino<br />
groups were synthesized by ring-opening polymerization of 4-methyl-2-oxo-2-hydro<br />
-1,3,2-dioxaphospholane, followed by reacting with N-trifluoroacetyl diamine or<br />
N,N’-bis(trifluoroacetyl) triamine in the presence of CCl4, and deprotected in ammonia. These<br />
novel PPAs showed lower cytotoxicity than PEI and PLL, and mediated efficient in vitro and in<br />
vivo DNA transfection. In order to increase the stability under physiological conditions as well as in<br />
vivo transfection efficiency of PPA/DNA complexes, we conjugated PPA with galactose-end PEG<br />
(Gal-PEG-PPA), and evaluated its in vitro and in vivo transfection efficiencies. It is found that the<br />
incorporation of PEG and galactose into PPA decreases the cytotoxicity, improves the tissue<br />
compatibility, and greatly enhances the transgene expression in mouse and rat liver.<br />
187
KL-46<br />
SYNTHESIS AND BIOCHEMICAL ACTIVITY OF NEW<br />
OLIGONUCLEOTIDE ANALOGS<br />
Marvin H. Caruthers<br />
University of Colorado, Department of Chemistry and Biochemistry,<br />
Boulder, CO 80309-0215, USA<br />
Deoxyoligonucleotides containing phosphonoacetate and thiophosphonoacetate internucleotide<br />
linkages are synthesized from appropriately protected deoxynucleoside acetic acid<br />
phosphinoamidites. By additional use of standard deoxynucleoside phosphoramidites, synthesis<br />
could be extended to chimeras having phosphate or thiophosphate internucleotide linkages as well.<br />
These oligomers are stable to degradation by nucleases, generate A-form duplexes with<br />
complementary RNA, and stimulate RNase H activity. As acetic acid esters, phosphonoacetate<br />
oligomers stabilize uptake of interfering RNA (as duplexes) by HeLa, MDCK, K562 and Jurkat<br />
cells in the absence of cationic lipid. Moreover this siRNA is biologically active. The synthesis<br />
of phosphonoformate deoxyoligonucleotides can be carried out on a Q-linker support using<br />
appropriately protected formic acid phosphinoamidites. These synthons are protected on the<br />
formic acid ester with diphenylmethylsilylethyl and with 9-fluorenylmethyloxycarbonyl on the<br />
exocyclic amines. With this strategy, removal of all protecting groups as well as cleavage of the<br />
support linkage is possible using mild conditions (TEMED-HF at pH 8.6). By the use of formic<br />
acid phosphinoamidites in combination with standard deoxynucleoside H-phosphonates, chimeras<br />
having phosphonoformate and phosphate internucleotide linkages are synthesized. The resulting<br />
oligomers yield A-form duplexes with complementary RNA, are resistant to nuclease degradation,<br />
and stimulate RNase H activity 2-6 fold relative to the same unmodified heteroduplex. Unlike<br />
chimeric phosphonoacetates, phosphonoformate oligomers form duplexes with natural RNA that<br />
are dramatically more stable (10 °C-11 °C) than similar unmodified duplexes.<br />
Borane phosphonate deoxyoligonucleotides are synthesized from 5'-O-benzhydroxybis(trimethoxy)silyl-2'-deoxynucleoside-3'-phosphoramidites.<br />
The exocyclic amines of adenine and<br />
cytosine are protected with dimethoxytrityl and trimethoxytrityl, respectively, whereas guanine<br />
protection is with N2-(9-fluorenylmethoxy carbonyl). Thymine is protected with N3-anisoyl.<br />
Using these synthons and under standard conditions via activation with tetrazole, cyclic<br />
condensations in excess of 99% are observed. Oxidation with either THF•BH3 or a peroxyanion<br />
solution followed by cleavage of the silyl ether with fluoride completes a cycle. Following<br />
synthesis of an appropriate oligomer, protecting groups are removed using sequentially acetic acid,<br />
a dithiolate and ammonium hydroxide. Oligodeoxynucleotide 10mers having any combination of<br />
borane phosphonate and phosphate internucleotide linkages are synthesized in isolated yields of<br />
70-80% and characterized by phosphorus NMR and mass spectrometry.<br />
188
IL-41<br />
STUDY OF ARTIFICIALLY SELECTED BIOCATALYSTS COVALENTLY MODIFIED<br />
BY ORGANOPHOSPHORUS COMPOUNDS<br />
Alexander G. Gabibov †, Andrey V. Reshetnyak †, ‡ , Maria Francesca Armentano § , Natalia A. Ponomarenko † , Oxana<br />
Durova † , Rustam Ziganshin † , Marina Serebryakova # , Vadim Govorun # ,Gennady Gololobov, Herbert C. Morse III * ,<br />
Alain Friboulet ** , Sudesh P. Makker ‡ and Alfonso Tramontano §<br />
† Shemyakin and Ovchinnikov Institute of Bioorganic Chemistry RAS, 16/10, Miklukho-Maklaya str, Moscow, 117871,<br />
Russia. § University of California, Davis – School of Medicine, Davis, CA 95616, USA.<br />
‡ Department of Chemistry, Lomonosov Moscow State University, Moscow, 119899, Russia.<br />
# Proteom Center of Russian Academy of Medical Sciences, Pogodinskaya str., Moscow, Russia.<br />
* Laboratory of Immunopathology, National Institute of Allergy and Infectious Diseases, National Institute of Health,<br />
5640 Fishers Lane, Rockville, MD 20852, USA. ** CNRS UMR 6022, Compiègne Technological University, BP 20529,<br />
Compiègne Cedex, France.<br />
The adaptation of biocatalysts by genetic diversification and functional selection is a promising<br />
new direction for drug discovery, molecular medicine and material science (1). More broadly,<br />
chemical selection applied to vast unbiased molecular libraries could give rise to artificial enzymes,<br />
affording important insight to the evolution of biocatalysis (2). Here we examine the enzyme-like<br />
functionality and structure of molecules identified in a reactivity-based search of a diversified<br />
protein repertoire represented by a synthetic phage-display human Ig V (scFv) gene library (2).<br />
Among the scFv selected by reaction with a phosphonate diester five clones had similar kinetic<br />
reactivity with kapp of 0.012 – 0.035 min -1 while a sixth (A.17) was nearly an order of magnitude<br />
more reactive (kapp = 0.32 min -1 ). Dissociation constants varied from 50 to 200 μM. Mass<br />
spectrometry identified nucleophilic Tyr33 at CDR-L1 in a representative clone A.5, whereas the<br />
more reactive A.17 was modified at Tyr37 in FR-L2. Consistently, site-directed mutants<br />
A.5Tyr33Phe and A.17Tyr37Phe were shown to be inactive while A.5 Tyr37Phe and A.17<br />
Tyr33Phe retained covalent reactivity. Furthermore, A.17 displayed specific amidase activity with<br />
Phe-MCA (kcat = 9.2 ± 0.5 x 10 -4 min -1 , Km = 50 μM). Mutant A.17Y37F was catalytically<br />
inactive suggesting covalent catalysis in the amidase mechanism. A VL germline with a highly<br />
conserved CDR3 was represented in 9/10 clones, whereas A.17 utilized a different VL. Greater<br />
diversity was seen in VH sequences, although Asn or Gln at position 105 in CDR-H3 was highly<br />
conserved in reactive clones and absent in non-reactive clones. Molecular modeling and docking in<br />
silica showed good complementarity at the active site with the phosphonate modifier and Phe-MCA<br />
substrate and further suggested the participation of Asn/Gln105 in an active site dyad with the<br />
nucleophilic Tyr. These sites may recapitulate a primitive catalytic apparatus in the origin of<br />
enzyme activity.<br />
189
IL-42<br />
THERMOSENSITIVE PHOSPHATE/THIOPHOSPHATE PROTECTING GROUPS AND<br />
THE DEVELOPMENT OF THERMOLYTIC OLIGONUCLEOTIDE PRODRUGS<br />
Andrzej Grajkowski, Cristina Ausín, Serge L. Beaucage<br />
Center for Drug Evaluation and Research, Food and Drug Administration, Bethesda, Maryland, USA<br />
Our research efforts have focused in recent years on the design and development of heat-sensitive<br />
groups for 5’-hydroxyl1 and phosphate/thiophosphate2-6 protection in an attempt to implement a<br />
“heat-driven” process for solid-phase oligonucleotide synthesis. Thus, thermosensitive groups such<br />
as the 2-(N-formyl-N-methyl)aminoethyl,2 4-oxopentyl,3 3-[(N-tert-butyl)carboxamido]-1-propyl,4<br />
3-(2-pyridyl)-1-propyl,5 2-[N-methyl-N-(2-pyridyl)]aminoethyl,5 and 4-methythio-1-butyl 6 were<br />
employed as P(III) protecting groups for deoxyribonucleoside phosphoramidites, which were<br />
incorporated into oligonucleotides via solid-phase techniques. Given the mild conditions under<br />
which thermolytic phosphate/thiophosphate protecting groups can be removed at near neutral pH,<br />
the use of these groups is attractive for the production of therapeutic oligonucleotides. The<br />
thermolytic deprotection mechanism of these protecting group was investigated and was consistent<br />
with an intramolecular cyclodeesterification reaction.2-6 While the phosphate/thiophosphate<br />
deprotection kinetics of DNA oligonucleotides functionalized with the thermolabile<br />
3-(2-pyridyl)-1-propyl, 2-[N-methyl-N-(2-pyridyl)]aminoethyl, and 4-methythio-1-butyl groups<br />
were relatively rapid (t∞ ~30 min, 55°C),5,6 the deprotection kinetics of oligonucleotides<br />
functionalized with the 2-(N-formyl-N-methyl)aminoethyl phosphate/thiophosphate protecting<br />
group were considerably slower (t∞ ~3 h) at a much higher temperature (90°C).2 Although not<br />
optimal for routine oligonucleotide synthesis, the 2-(N-formyl-N-methyl)aminoethyl<br />
phosphate/thiophosphate protecting group was deemed appropriate for the development of<br />
therapeutic oligonucleotide prodrugs on the basis of its sluggish deprotection kinetics at 37°C (t1/2<br />
~73 h).7 In this context, oligonucleoside phosphorothioates functionalized with the<br />
2-(N-formyl-N-methyl)aminoethyl group for thiophosphate protection exhibited the characteristics<br />
of oligonucleotide prodrugs in that they are uncharged and, thus, inherently resistant to the<br />
hydrolytic activity of nucleases. This class of modified oligonucleotides, unlike most recently<br />
developed oligonucleotide prodrugs, does not require esterases or other intracellular enzymes for<br />
prodrug-to-drug conversion. Only an aqueous environment maintained at 37°C or above is<br />
necessary to efficiently convert oligonucleoside 2-(N-formyl-N-methyl)aminoethyl<br />
phosphorothioate triesters to bioactive oligonucleoside phosphorothioate diesters. This novel<br />
concept in oligonucleotide prodrug development led to the solid-phase synthesis of CpG ODN<br />
fma1555[d(GPS(FMA)CPS(FMA)TPS(FMA)APS(FMA)GPS(FMA)APS(FMA)CPS(FMA)GPS(F<br />
MA)TPS(FMA)TPS(FMA)APS(FMA)GPS(FMA)CPS(FMA)GPS(FMA)T)]as a potential<br />
immunotherapeutic DNA oligonucleotide prodrug,7 where PS(FMA) stands for a<br />
2-(N-formyl-N-methyl)aminoethyl phosphorothioate triester function. CpG ODN fma1555 behaved<br />
as a prodrug by virtue of its conversion to the well-studied immunomodulatory oligonucleoside<br />
phosphorothioate diester CpG ODN 1555 [d(GPSCPSTPSAPSGPSAPSCPSGPSTPS TPSAPS<br />
GPSCPSGPST)] through thermolytic cleavage of the 2-(N-formyl-N-methyl)aminoethyl<br />
thiophosphate protecting group at 37°C. The immunostimulatory properties of CpG ODN fma1555<br />
190
were evaluated in mice challenged in the ear with live Leishmania major metacyclic promastigotes.<br />
Local intradermal administration of CpG ODN fma1555 was as effective as that of CpG ODN 1555<br />
in reducing the size of Leishmania lesions over time.7 In a different infectious model, CpG ODN<br />
fma1555prevented the death of Tacaribe-infected mice (60-70% survival) when administered three<br />
days before infection.7 Interestingly, co-administration of CpG ODN fma1555 and CpG ODN 1555<br />
in this model increased the window for therapeutic treatment against Tacaribe virus infection, and<br />
thus supported the use of thermolytic oligonucleotides as prodrugs in the effective treatment of<br />
infectious diseases. Our results are consistent with the notion that CpG ODN fma1555 behaves as a<br />
prodrug in vivo through an unprecedented thermolytic process. These findings prompted us to<br />
design CpG ODN prodrugs exhibiting either a shorter or longer half-time of thiophosphate<br />
deprotection relative to that of CpG ODN fma1555 for the preparation of effective and long-acting<br />
immunotherapeutic oligonucleotide formulations against various infectious diseases in animal<br />
models. In this regard, the 5’-proximal CpG motif of CpG ODN fma1555 has been functionalized<br />
with a single thermolabile 4-hydroxy-1-butyl (hbu) or 4-thiophosphato-1-butyl thiophosphate (psb)<br />
protecting group.8 These modifications were achieved through incorporation of an activated<br />
deoxyribonucleoside phosphoramidite, carrying a 4-levulinyloxy-1-butyl group for phosphorus<br />
protection, into the oligonucleotide chain during solid-phase synthesis, and through an optional<br />
phosphorylation reaction effected by bis[S-(4,4’-dimethoxtrityl)-2-mercaptoethyl]-N,N-diisopropylphosphoramidite 9<br />
after hydrazinolysis of the 4-levulinyl group. The thermal deprotection kinetics of the hbu and psb<br />
thiophosphate protecting groups were determined in phosphate-buffered saline (pH 7.2) using<br />
dinucleotide models. The thermolytic cleavage of the 4-hydroxy-1-butyl and<br />
4-thiophosphato-1-butyl thiophosphate protecting groups from the dinucleotide model occurred<br />
with a half time of 47 min and 13 min, respectively, at 90 °C or 168 h and 30 h, respectively, at<br />
37°C. Studies assessing cellular uptake and biological activity of the modified CpG ODN fma1555<br />
(CpG ODN hbu1555 and CpG ODN psb1555) are ongoing. Incidentally, the solubility of CpG<br />
ODN psb1555 in water has increased by ~50% relative to that of CpG ODN fma1555. Our findings<br />
thus foster the chemical development of novel, minimally charged, thermolytic oligonucleotide<br />
prodrugs exhibiting an optimal range of prodrug-to-drug conversion half times for optimal<br />
therapeutic outcomes.<br />
References<br />
[1] M.K. Chmielewski, V. Marchán, J. Cieślak, A. Grajkowski, V. Livengood, U. Münch, A. Wilk and S.L. Beaucage, J.<br />
Org. Chem., 68, 10003 (2003).<br />
[2] A. Grajkowski, A. Wilk, M.K. Chmielewski, L.R. Phillips and S.L. Beaucage, Org. Lett., 3, 1287 (2001).<br />
[3] A. Wilk, M.K. Chmielewski, A. Grajkowski, L.R. Phillips and S.L. Beaucage, Tetrahedron Lett., 42, 5635 (2001).<br />
[4] A. Wilk, M.K. Chmielewski, A. Grajkowski, L.R. Phillips and S.L. Beaucage, J. Org. Chem., 67, 6430 (2002).<br />
[5] J. Cieślak and S.L. Beaucage, J. Org. Chem., 68, 10123 (2003).<br />
[6] J. Cieślak, A. Grajkowski, V. Livengood, and S.L. Beaucage, J. Org. Chem., 69, 2509 (2004).<br />
[7] A. Grajkowski, J. Pedras-Vasconcelos, V. Wang, C. Ausín, S. Hess, D. Verthelyi and S.L. Beaucage, Nucleic Acids<br />
Res., 33, 3550 (2005).<br />
191
IL-43<br />
ADVANCING BIOMEDICAL RESEARCH BY DEVELOPMENT OF FLUORESCENT<br />
OLIGONUCLEOTIDE-BASED ASSAYS<br />
Gerald Zon<br />
Applied Biosystems, Advanced Research & Technology,Foster City, CA 94404, USA<br />
Automated solid-phase synthesis of oligodeoxynucleotides (ODNs) based on 5’-dimethoxytrityl<br />
3’-phosphoramidite 2’-deoxynucleoside monomers pioneered by Caruthers and coworkers was<br />
commercially introduced by Applied Biosystems Inc. (ABI) in 1983 as a convenient source of<br />
ODNs for basic research and recombinant DNA technology. Shortly thereafter, ABI introduced<br />
4-colored 5’-fluorescently labeled ODNs for automated Sanger-sequencing of DNA, which was<br />
subsequently improved by development of 2’, 3’-dideoxynucleotide triphosphate terminators having<br />
fluorescence resonance energy transfer (FRET) dyes (BigDye®). ODN primers and BigDye®<br />
technology was used to sequence the human genome in 2001, and thus enabled the era of genomics.<br />
Ready access to synthetic ODN primers for PCR, and development by ABI of FRET-based<br />
TaqMan® probes, has enabled real-time quantification of mRNA for gene expression analysis, as<br />
well as detection of single nucleotide polymorphisms (SNPs). All of these fluorescent<br />
oligonucleotide-based assays are now widely use for basic and biomedical research of human or<br />
other species genomes and transcriptomes. Such analyses of genetic variation have given rise to the<br />
concept of “personalized medicine,” wherein genomic analytical data for an individual is used to<br />
assess predisposition to inherited or somatic diseases, as well as drug efficacy or toxicity. To do this<br />
on abroad scale, the cost of sequencing an individual genome must be greatly reduced, which has<br />
led to the quest for what is called the “$1,000 genome.” ABI has begun development of a novel<br />
technology called Sequencing by Oligonucleotide Ligation and Detection (SOLiD) that offers the<br />
possibility for significantly reduced costs of genomic sequencing. In this massively parallel<br />
approach, short-fragment DNA populations are clonally amplified by emulsion PCR onto 1-micron<br />
beads, which are then enriched and randomly deposited and attached onto glass arrays. The bead<br />
array is then placed into an automated flow-cell where 4-color 5’-fluorescently-labeled probes are<br />
used to interrogate bead-attached DNA-template positions relative to an ODN primer having a<br />
5’-phosphate. Ligase is used to join the 5’-phosphate to the 3’-end of the hybridized probe, and is<br />
followed by washing and then fluorescence detection to identify the base at the interrogation<br />
position. A metal ion-catalyzed cleavage reaction involving a 3’-phosphorothiolate linkage is used<br />
to fragment the ligated probe to release a fluorescent moiety and generate a 5’-phosphate group on<br />
the extended primer for a further ligation. The aforementioned steps define a cycle that is repeated a<br />
number of times. The resultant multiply-extended primer is eluted from the bead-attached DNA<br />
template, and a second primer that is shorter by one base is used to carry out a number of<br />
base-interrogation cycles. This process is repeated to ultimately afford the base-by-base sequence of<br />
the bead-attached DNA template. In the case of 25-base sequence reads by SOLiD, the automated<br />
system under development is projected to provide 1 billion bases of DNA sequence in each run.<br />
192
IL-44<br />
NON WATSON-CRICK STRUCTURE RECOGNITION AND ITS APPLICATIONS<br />
Zhen Xi<br />
National Key Laboratory of Elemento-Organic Chemistry, Department of Chemical Biology, College of Chemistry<br />
Nankai University,Tianjin 300071, P.R.China Email: zhenxi@nankai.edu.cn<br />
Nucleic acids can have richly diverse structures, including hairpins, knots, pseudoknots, triple<br />
helices, loops, helical junctions etc. Such bulged structures in nucleic acids are of general biological<br />
significance. They have been proposed as intermediates in a multitude of processes including RNA<br />
splicing, frame-shift mutagenesis, intercalator induced mutagenesis, imperfect homologous<br />
recombination, as the binding site for the coat protein of bacteriophage, in the ribosomal<br />
synthesizing machinery and in RNAi of pre-microRNA (bulge-RNA hairpin), the precursor of<br />
microRNA. Bulges have also been suggested as binding motifs for regulatory proteins involved<br />
with viral replication, including the TAR region of HIV-1. Additionally, the etiology of at least 31<br />
human neurodegenerative genetic diseases has been attributed to genetic variations in the lengths of<br />
triplet repeats in genomic DNA (e.g. myotonic dystrophy, Huntington’s disease, Friederich’s ataxia,<br />
and fragile X syndrome). The unstable expansion of triplet repeats has been attributed to reiterative<br />
synthesis due to slippage and bulge formation in the newly formed DNA strand. As such,<br />
compounds capable of binding to bulges/hairpin could have significant therapeutic potential.<br />
In this talk, the recent progress of our lab on study of non Watson-Crick structure recognition by<br />
small molecules will be discussed. Different small organic molecules mimicking natural products<br />
are designed to selectively bind to bulged structures. It has been found that those designed small<br />
molecules not only bind to the non Watson-Crick structures, but also express different biological<br />
functions through their selective binding. Neocarzinostatin analogues, which bind bulged structure<br />
with micromolar of dissociation Kd, can stimulate the DNA slippage during its replication,<br />
especially for those DNA sequences of triply repeats that cause certain genetic diseases.<br />
Tylophorine B, which binds bulged structure of DNA and RNA with nanomolar of dissociation Kd,<br />
interferes with Tobacco Mosaic Virus particle assembly to inhibit TMV virus infection.<br />
Sparsomycin analogues targeting on ribosome inhibit bacterial growth. Through our work, we have<br />
shown that study on non Watson-Crick structure recognition by small molecules is an efficient way<br />
to generate bioactive molecular probes for understanding the molecular mechanism of some<br />
important biological process involving such bulged structures in nucleic acids.<br />
193
IL-45<br />
PROBING MECHANISMS OF PHOSPHOTRANSFERASES WITH THIO EFFECTS<br />
Karol Bruzik<br />
Department of Medicinal Chemistry and Pharmacognosy, The University of Illinois at Chicago 833 S. Wood St.<br />
Chicago, IL 60612, USA Email: kbruzik@uic.edu<br />
194
IL-47<br />
RNA INTERFERENCE: THE NEW PARADIGM OF DRUG DISCOVERY BASED ON<br />
NATURE'S PHOSPHOROUS CHEMISTRY<br />
Muthiah Manoharan<br />
Drug Discovery Alnylam Pharmaceuticals Cambridge, USA<br />
Email: mmanoharan@isisph.com<br />
195
IL-49<br />
SYNTHESIS AND BIOLOGICAL STUDIES OF G-QUADRUPLEX STABILIZERS<br />
Lige Ren, Jing Huang, Boqiao Fu, Xiang Zhou*<br />
College of Chemistry and Molecular Sciences, Wuhan University, Hubei, Wuhan, 430072, P. R. of China<br />
Telomeres exist at the ends of eukaryotic chromosomes and can protect chromosome. [1] It is<br />
known that telomeric repeats with the single-stranded G-rich overhang can be extended by telomerase.<br />
[2] . Telomerase is active in most tumor cells and not in normal cells and could be good strategy for<br />
antitumor drug design with high selectivity. It was reported that telomerase inhibition occurred via a<br />
quadruplex-mediated mechanism because of G4 selectivity over duplex DNA affinity and<br />
increasing potency for telomerase inhibition. [3] We shall report our synthesis of new families of<br />
G-quadruplex Stabilizers and study their interaction with G-quadruplex DNA.<br />
Reference<br />
[1] T. R., Cech, Cell 2004, 116, 273<br />
[2] E. H. Blackburn, Cell, 2001, 106, 661..<br />
[3] T. M. Fletcher, Expert Opin.Ther. Targets, 2005, 9, 457<br />
196
O-96<br />
PERIFOSINE INHIBITS MULTIPLE SIGNALING PATHWAYS IN GLIAL PROGENITORS AND COOPERATES<br />
WITH TEMOZOLOMIDE TO ARREST CELL PROLIFERATION IN GLIOMAS IN VIVO.<br />
Alan H. Shih, Hiro Momota, Edward Nerio, Eric C Holland<br />
Perifosine (Octadecyl-(N,N-dimethylpiperidino-4-yl)phosphate) is a novel akylphosphocholine<br />
that has anti-neoplastic properties. Perifosine may act by altering cellular membrane composition<br />
or inhibiting mitogenic signalling. Specifically, it can act as an oral Akt inhibitor which exerts a<br />
marked cytotoxic effect on human tumor cell lines, and is currently being tested in several phase II<br />
trials for treatment of major human cancers. However, the efficacy of perifosine in human gliomas<br />
has not been established. As Akt is activated in 70% of human glioblastomas, we investigated the<br />
impact of perifosine on glia in culture and on a mouse glioma model in vivo. Here we show that<br />
perifosine strongly reduces phosphorylation levels of Akt and extracellular signal-regulated kinase<br />
(Erk) 1/2, induces cell cycle arrest in G1 and G2, and causes dose-dependent growth inhibition of<br />
mouse glial progenitors in which Akt and/or Ras-Erk 1/2 pathways are activated. Furthermore,<br />
because temozolomide is a common oral alkylating agent used in the treatment of gliomas, we<br />
investigated the effect of perifosine in combination with temozolomide. We observed an enhanced<br />
effect when both were used in culture. With these results, we combined perifosine and<br />
temozolomide as treatment of platelet-derived growth factor B–driven gliomas in mice. Animal<br />
studies showed that perifosine and temozolomide combination therapy was more effective than<br />
temozolomide treatment alone (P < 0.01). These results indicate that perifosine is an effective drug<br />
in gliomas in which Akt and Ras-Erk 1/2 pathways are frequently activated, and may be a new<br />
candidate for glioma treatment in the clinic.<br />
197
O-97<br />
A LOW-MOLECULAR PHOSPHINIC INHIBITOR OF LEUCINE AMINOPEPTIDASE<br />
OF POTENTIAL MEDICAL SIGNIFICANCE<br />
A.Mucha<br />
Department of Bioorganic Chemistry, Faculty of Chemistry, Wrocław University of Technology, WybrzeŜe<br />
Wyspiańskiego 27, 50-370 Wrocław, Poland<br />
H-hPheψ[PO2HCH2]Phe-OH, a phosphinic dipeptide analogue has been demonstrated to be a<br />
potent, competitive inhibitor of cytosolic leucine aminopeptidase (LAP, E.C.3.4.11.1), mimicking<br />
the transition state of the reaction catalysed by the enzyme. Exhibiting Ki value of 66 nM (for the<br />
mixture of four diastereomers) it has been ranked among the most potent inactivators of LAP<br />
reported so far [1] .<br />
Here, we summarize the development of the inhibitor together with its current study and<br />
application achievements. Thus, novel results concerning the activity of the individual<br />
diastereoisomers of H-hPheψ[PO2HCH2]Phe-OH towards LAP are given. High performance liquid<br />
chromatography and capillary electrochromatography based on silica modified with a cinchona<br />
alkaloid-derived chiral selector have been utilized to separate all four stereoisomers. Recently, the<br />
compound has been also successfully employed to inhibit leucyl aminopeptidase of P. falciparum, a<br />
potential target protease for the development of new antimalarials. Significant suppression of both<br />
the enzyme activity and the growth of the pathogen in vitro as well as the parasite burden in vivo<br />
have been evidenced.<br />
Reference<br />
[1] J. Grembecka, A. Mucha, T. Cierpicki, and P. Kafarski, J. Med. Chem., 46, 2641(2003).<br />
198
O-98<br />
MAPPING OF THE FUNCTIONAL PHOSPHATE GROUPS IN THE CATALYTIC CORE OF<br />
DEOXYRIBOZYME 10-23<br />
Barbara Nawrot*, Kinga Widera, Marzena Wojcik, Beata Rebowska, Wieslawa Goss, Wojciech J. Stec<br />
Department of Bioorganic Chemistry, Centre of Molecular and Macromolecular Studies of the Polish Academy of<br />
Sciences, Sienkiewicza 112, 90-363 Lodz, Poland<br />
Phone: +48-42-6816970, Fax: +48-42-6815483, E-mail: bnawrot@bio.cbmm.lodz.pl<br />
The RNA phosphodiester bond cleavage activity of a series of sixteen thio-deoxyribozymes<br />
10-23, containing a P-stereorandom single phosphorothioate linkage in predetermined positions of<br />
the catalytic core from P1 to P16, was evaluated under single turnover conditions in the presence of<br />
either 3 mM magnesium or manganese ions. A metal-specificity switch approach permitted to<br />
identify non-bridging phosphate oxygens (pro-RP or pro-SP) located at seven positions of the core<br />
(P2, P4 and P9-13) involved in a direct coordination with a divalent metal ion(s). By contrast,<br />
phosphorothioates at positions P3,6,7, and P14-16 displayed no functional relevance in the<br />
deoxyribozyme-mediated catalysis. Interestingly, PS modifications at positions P1 or P8 enhanced<br />
catalytic efficiency of the enzyme. Among the tested deoxyribozymes, thio-substitution at position<br />
P5 had the largest deleterious effect on the catalytic rate in the presence of Mg 2+ and this was<br />
reversed in the presence of Mn 2+ ions. Further experiments with thio-deoxyribozymes of<br />
stereodefined P-chirality suggest direct involvement of both oxygens of the P5 phosphate and the<br />
pro-RP-oxygen at P9 in the metal ion coordination. In addition, it was found that the oxygen atom at<br />
C-6 of G6 contributes to binding of metal ion and this interaction is essential for the 10-23<br />
deoxyribozyme catalytic activity.<br />
The obtained data enabled us to propose a model for the metal binding site in the catalytic core of<br />
deoxyribozyme 10-23. In this model, the plausible ligands for metal coordination are the pro-RP and<br />
pro-SP oxygen atoms of the P5 phosphate and the pro-RP oxygen from position P9 as well as the<br />
carbonyl oxygen of the guanosine unit at position 6 of the 10-23 catalytic core (Figure).<br />
O<br />
T 4<br />
P5<br />
O T<br />
O<br />
P<br />
A5 O<br />
pro-R P<br />
O O<br />
Mg 2+<br />
O<br />
pro-S P<br />
O A<br />
O<br />
P<br />
O<br />
O<br />
O<br />
O<br />
N<br />
?<br />
O<br />
N N<br />
G 6<br />
NH<br />
199<br />
?<br />
NH 2<br />
pro-R P<br />
O<br />
O<br />
O<br />
P<br />
O O A<br />
O<br />
P9<br />
O<br />
O T<br />
T 8<br />
A 9
O-100<br />
THE AZA-Α-AMINOPHOSPHONATE MACROCYCLES AS POTENTIAL<br />
SUPRAMOLCULAR HOSTS FOR METAL IONS AND BIOLOGICALLY<br />
IMPORTANT MOLECULES<br />
P.Mlynarz a , A.Rydzewska a , S.Sliwinska a , G.Schroeder b ,P.Kafarski a<br />
a Department of Chemistry, Wroclaw University of Technology, 50- 370 Wroclaw, Poland.<br />
b Faculty of Chemistry, A. Mickiewicz University, Grunwaldzka 6, 60-780 Poznan<br />
The discovery of family of macrocyclic compounds was the milestone in chemistry. These<br />
compounds have been recognized as supramolecular receptors for metal ions and many organic<br />
molecules. Therefore, they were used for construction of selective sensors, model compounds<br />
mimicking enzyme actions or transport through membranes, etc. On the other hand,<br />
aminophosphonates were found to be good enzyme inhibitors and metal ion chelators used in many<br />
branches of industry (e.g. agricultural, pharmaceutical and chemical) [1] . In this work we designed<br />
and synthesized aza-aminophosphonate macrocycles 1 and 2 combining features of both<br />
macrocyclic and aza-8-aminophosphonic entities and based on well described receptor 3 as skeleton<br />
for amino acids [2] . The introduction four phosphonic groups placed into carefully tailored cavity<br />
should result in the new synthetic receptors for biologically important molecules and metal ions and<br />
thus may serve as metalloreceptors or contrast agents for MRI.<br />
References<br />
[1]. “Aminophosphinic and Aminophosphonic Acids. Chemistry and Biological Activity”, Eds. V. P. Kukhar and H. R.<br />
Hudson , John Wiley & Sons LTD, Chichester, 2000.<br />
[2]. J. Huang, Sh.-A. Li, D.-X. Yang, W.-Y. Sun and W.-X. Tang, Bioorg. Biomed. Chem. J.2004, 12, 529.<br />
200
O-101<br />
STUDIES ON THE CONDENSATION OF H-PHOSPHONATE MONOESTERS<br />
WITH S-NUCLEOPHILES<br />
Renata Hiresova and Jacek Stawinski*<br />
Department of Organic Chemistry, Arrhenius Laboratory, Stockholm University,<br />
S-10691 Stockholm, Sweden;<br />
Oligonucleotide analogues containing modified internucleotide linkages are of the growing<br />
interest as potential therapeutic agents 1 and tools in molecular biology for manipulation of RNA and<br />
DNA 2 . Among these, oligonucleoside phosphorothioates 2-4 and phosphorodithioates 5 are<br />
particularly attractive since they are isopolar and isosteric to their natural congeners.<br />
Here we report our preliminary studies on the condensation of nucleoside H-phosphonate<br />
monoesters with various thiols to produce a new type of H-phosphonate analogues, nucleoside<br />
H-phosphonothioates, bearing sulfur atom in the bridging position at the phosphorus center. Via<br />
oxidative transformations, the produced H-phosphonothioate derivatives can be converted into<br />
various nucleotide analogues that are difficult accessible on other routes.<br />
DMTO<br />
Abbreviations:<br />
C.A. = coupling agent<br />
R = alkyl, nucleosidyl, cholesteryl<br />
Thy = thymin-1-yl<br />
O<br />
O<br />
O<br />
P H<br />
O<br />
Thy<br />
DMTO<br />
R-SH<br />
C.A.<br />
References<br />
1. Zon, G. Pharm. Res. 1988, 5, 539-549.<br />
2. Eckstein, F.; Gish, G. TIBS 1989, 97-100.<br />
3. Eckstein, F. Ann. Rev. Biochem. 1985, 54, 367-402.<br />
4. Cosstick, R.; Vyle, J. S. Tetrahedron Lett. 1989, 30, 4693-4696.<br />
5. Brill, W. K.-D.; Tang, J.-Y.; Ma, Y.-X.; Caruthers, M. H. J. Am. Chem. Soc. 1989, 111, 2321-2322.<br />
O<br />
O<br />
O<br />
P O<br />
SR<br />
DMTO<br />
Thy<br />
201<br />
[O]<br />
O<br />
O<br />
O<br />
P H<br />
SR<br />
Thy<br />
[S]<br />
DMTO<br />
O<br />
O<br />
O<br />
P S<br />
SR<br />
Thy
O-103<br />
ESI INVESTIGATION OF NON –COVALENT COMPLEXES BETWEEN<br />
PHOSPHORYLATED DAIDZEIN AND INSULIN<br />
Chen Xiaolan 1 , Shi Xiaona 1 , Yuan Jinwei 1 , Lu Jiansha 1 , Qu Lingbo 1, 2 , Zhao Yufen 1,3<br />
1<br />
Department of Chemistry, Zhengzhou University, Zhengzhou, 450052, P. R. China<br />
2<br />
Anyang Normal College, Henan Province, Anyang, 455002, P. R. China<br />
3<br />
The Key Laboratory for Bioorganic Phosphorus Chemistry, Department of Chemistry<br />
School Life Sciences and Engineering, Tsinghua University, Beijing, 10084, P. R. China<br />
Since the end of last century, ESI-MS has begun to be used to reveal the existence of<br />
non-covalent complexes, providing important stoichiometric information. Many researchers have<br />
reported the use of ESI-MS to determine dissociation constants of such complexes. Gas phase<br />
dissociation constants measured in this way have been found to correlate well with those measured<br />
by solution based techniques [1,2] . In the work described in this paper, daidzein<br />
(7,4′-dihydroxyisoflavone) was first phosphorylated by a modified Atherton-Todd reaction and the<br />
structures of the five target products were determined by X-ray, IR, NMR and ESI. Our ESI results<br />
show that all the phosphorylated daidzeins can form non-covalent complexes with the protein<br />
insulin, while non-covalent complexes were not detected in solutions of unphosphorylated daidzein<br />
and insulin. The relative affinity of each non-covalent complex was obtained according to its<br />
different decomposed orifice voltage. From Table 1, it is clear that compound e has the highest<br />
disappeared orifice voltage and therefore the strongest binding affinity. The relative stability of the<br />
non-covalent complexes was closely associated with the length of the hydrophobic chain.<br />
HO<br />
O<br />
O<br />
OH<br />
O<br />
RO PH<br />
OR<br />
CCl4,Et3N<br />
DMF<br />
202<br />
RO<br />
O<br />
P O<br />
OR<br />
a R= -CH3 b R= -CH2CH3 c R= -CH2CH2CH3<br />
d R= -CH(CH3)2 e R= -CH2CH2CH2CH3<br />
Scheme 1.<br />
Table 1. The orifice voltage of the non- covalent complexes disappeared<br />
Compound a b c d e<br />
orifice voltage /Volt 133.8 146.0 151.8 157.4 162.9<br />
References<br />
[1] Daniel, J.M.; McCombie, G.; Wendt, S. J. Am. Soc.Mass Spectrom. 2003,14,442.<br />
[2] Dotsikas, Y.; Loukas, Y.L. J. Am. Soc. Mass Spectrom. 2003,14,1123.<br />
O<br />
O<br />
OH
O-104<br />
SYNTHESIS OF NOVEL STEROIDAL BIOCONJUGATES WITH AZT<br />
AND PHOSPHORUS<br />
Peiyuan Jin, Kai Liu, Yong Ju,*<br />
Yufen Zhao<br />
Key Laboratory of Bioorganic Phosphorus Chemistry & Chemical Biology, Ministry of Education, Department of<br />
Chemistry, Tsinghua University, Beijing 100084, P. R. China<br />
Steroidal phosphates are important biological molecules.1 3’-Azido-3’-deoxythymidine (AZT,<br />
Zidovudine) is now the backbone of most combination therapies for AIDS and HIV infection, and it<br />
remains one of the most prescribed AIDS drugs. AZT is activated by phosphorylation in vivo and<br />
inhibits HIV replication by blocking a critical HIV enzyme,2 and many H-phosphonates of AZT<br />
have also been shown to possess high anti-HIV activity.3 In order to further improve the activity<br />
and overcome the drawback, some steroid phospholipids conjugated with AZT were synthesized in<br />
good yields as potential membrane-soluble prodrugs of the phosphate forms,4, 5 which is due to<br />
their lipophilic characteristic, lymphocyte membrane affinity and the ability of binding to low<br />
density lipoprotein. These phospholipids were easily transformed to corresponding phosphates,<br />
phosphorothioates, and phosphoroselenoates or phosphoramidates6, 7 by oxidation or conjugation<br />
with amines using Atherton–Todd reaction. The structures of synthesized steroidal conjugates with<br />
AZT containing phosporus were confirmed on the basis of the 1H NMR, 31P NMR, and ESI-MS<br />
data.<br />
PhO<br />
O<br />
P OPh<br />
(1) AZT,Py<br />
(2) ROH, Py<br />
O<br />
RO P O<br />
H H<br />
ROH =<br />
O<br />
N 3<br />
O<br />
O<br />
N<br />
203<br />
NH<br />
HO<br />
HO HO<br />
O<br />
H<br />
P O<br />
n O<br />
n = 14; 16<br />
N 3<br />
O<br />
R'OH =<br />
O<br />
N<br />
HO<br />
NH<br />
O<br />
+ H2N O<br />
RO<br />
O<br />
P O<br />
X- Et3NH +<br />
X: a = S; b = Se; c = O N3 O<br />
O<br />
H H<br />
O N N P O<br />
R'' R' R' R''<br />
N O<br />
O<br />
H<br />
O<br />
O<br />
*<br />
N3 n<br />
R'' = CH2CH2 CH2CH2CH2CH2CH2CH2 CH2CH2NHCH2CH2 CH2CH2CH2NHCH2CH2CH2 Project supported by the NSF of China (No. 20542004) and SRFDP of Higher Education (No.20050003104).<br />
References<br />
1. Sprecher, M.; Breslow, R.; Philosof-Oppenheimer, R.;Chavet, E. Tetrahedron 1999, 55, 5465.<br />
2. Yarnell, A. Chem. Eng. News 2005, 83, 48.<br />
3. Cardona, V. M. F.; Ayi, A. I.; Aubertin, A. M.; Guedj, R. Antiviral Res. 1999, 42, 189.<br />
4. Ji, S. H.; Xiao, Q.; Ju, Y.; Zhao, Y. F. Chem. Lett. 2005, 34, 944.<br />
5. Xiao, Q.; Sun, J.; Ju, Y.; Zhao, Y. F.; Cui, Y. X. Chem. Lett. 2003, 32, 522.<br />
6. Ji, C. J.; Xue, C. B.; Zeng, J. N.; Zhao, Y. F. Synthesis 1988, 444.<br />
[O]<br />
O<br />
O<br />
O<br />
O<br />
N<br />
NH<br />
O<br />
N<br />
O<br />
NH<br />
O
P-33<br />
THE CHEMICAL SYNTHESIS OF OLIGONUCLEOTIDE PHOSPHORAMIDATES<br />
HongYu Zhang, ChunJian Duan, XiangQian Liu, XiaoLan Chen, LingBo Qu, YuFen Zhao<br />
Key Laboratory of Chemical Biology and Organic Chemistry, Zhengzhou University, Zhengzhou 450052<br />
The method of synthesis of monofunctional nucleoside phosphoramidity by using trivalent<br />
phosphorous as reactant has been drawn much attention since the approach was introduced by<br />
Beaucage and Caruthers. All chemotherapeutic nucleoside analogues, for viral infections and cancer,<br />
exert their effect only after metabolic activation in the target cell to their 5’-phosphate forms. Often<br />
the efficiency of intracellular phosphorylation of nucleoside analogues can limit their therapeutic<br />
potential, but the pre-formed phosphates are of limited utility on account of their poor membrane<br />
permeation. In order to research it function, these oligonucleotide phosphoramidates were<br />
synthesized. All compounds have been elucidated by 1 H NMR, 13 C NMR, MS.<br />
HN<br />
O<br />
HO<br />
O<br />
O<br />
N<br />
H H<br />
H<br />
OH<br />
H<br />
OH<br />
R 1<br />
HO<br />
H<br />
H<br />
O<br />
O<br />
HN<br />
O<br />
O<br />
N<br />
H<br />
H<br />
O<br />
R 1<br />
Cl<br />
P<br />
Cl<br />
PCl3 HN<br />
O<br />
O<br />
H<br />
H<br />
O<br />
DMTrO<br />
O<br />
O<br />
N<br />
H H<br />
H<br />
OH<br />
H<br />
OTBDMS<br />
Scheme 1<br />
References<br />
1. Christopher M., Jean-Christophe T., Felice D.,etc., Bioorganic & Medicinal Chemistry. 2005, 13, 3219–3227.<br />
2. Joshua S. W., David K., Stephen A.S.. etc. Nucleic Acids Research, 2004, 4(32), 1502-1511.<br />
O<br />
O<br />
204<br />
HN<br />
O<br />
N<br />
H<br />
H<br />
O<br />
R 1<br />
R 3 OOC<br />
R 1 =H,Br, R 2 =H,CH 3, R 3 =CH 3,CH 2CH 3<br />
R 1<br />
R 2<br />
DMTrO<br />
O<br />
H H<br />
R<br />
H<br />
O<br />
O<br />
P<br />
H<br />
OTBDMS<br />
O<br />
N<br />
H H<br />
O<br />
H<br />
H<br />
O<br />
H<br />
O<br />
2<br />
R3 O N<br />
OOC<br />
NH 2<br />
HN<br />
O<br />
R 1
P-41<br />
STUDIES ON THE SELF-ASSEMBLY OF L-SERINE INTO L-SERINE<br />
PHOSPHOPEPTIDE MEDIATED BY PHOSPHORUS OXYCHLORIDE<br />
Jianchen Zhang 1 , Wenping Shi 1 , Jun Xu 2 , Yufen Zhao 3<br />
1<br />
Department of Chemical Defense, Institute of Chemical Defense, Beijing 102205<br />
2<br />
Department of Humanities and Basic Sciences, Zhengzhou College of Animal Husbandry Engineering, zhengzhou<br />
450011<br />
3<br />
The Key Laboratory for Chemical Biology of Fujian Province, Department of Chemistry, University, Xiamen 361005<br />
L-Serine phosphopeptide is a main bioactive segment in casein Phosphopeptides. In this paper,<br />
L-Serine peptide was synthesized by the self-assembly of L-serine mediated by phosphorus<br />
oxychloride. 31 P NMR and ESI-MS/MS were used to study the mechanism and products of the<br />
reaction and confirm the structures of the peptides.<br />
The reaction of L-serine and phosphorus oxychloride could be assembled into 2~8 homo-peptides<br />
by phosphorus oxychloride activation, after quenching with water, the reaction mixture yielded the<br />
L-Serine peptide, which were analyzed by ESI-MS and ESI-MS/MS. It was found that the length<br />
and yield of L-Serine peptide were related with the reaction time, the polarity of the solvent and the<br />
reaction temperature. As the reaction time was prolonged, the length of peptides increased; the<br />
lengths of peptides increased as increased the polarity of the solvent. Especially, acetonitrile or<br />
chloroform could give the better result; Lower temperature might close down the reactive of<br />
hydroxy and increase yield. Actually, L-Serine peptide libraries were obtained. The quantitative<br />
water was added to the reaction mixture. The temperature was controlled at 60 ℃ and kept stirring<br />
for 2.0 h. After cooling, 95% ethanol was added and stored overnight at 3 ℃ . And L-Serine<br />
phosphopeptide was obtained.<br />
References<br />
Fowshon A. M., Maeda M., Sasaki S., Bioorg. Med. Chem., 2000, 8, 465-473<br />
Liu Y., Fan H.K., Zhou H. et al., Chem. J. Chin. University, 1999,20, 744-746<br />
Qi J.,Fang R.,Zhou H. et al., Chem. J. Chin. University, 1996, 17, 1738-1741<br />
Kui Lu, Yan Liu, Ning Zhou, Yu-Ping Feng, Li Xu, Ling-Bo Qu, Yu-Fen Zhao, J.Tsinghua University, 2001, 41, 80-82<br />
Kui Lu, Yan Liu, Yi Chen, Ning Zhou, Qiang Lu, Ling-Bo Qu, Yu-Fen Zhao, J Tsinghua University, 2001, 41, 77-79<br />
Kui Lu, Ning Zhou, Yan Liu, Yi Chen, Xiang-Fen Guo, Ling-Bo Qu, Yu-Fen Zhao, J. Tsinghua University, 2001, 41,<br />
87-89<br />
205
P-43<br />
SYNTHESIS OF N-PROTECTED O-HYDROXYL-PHENYL -<br />
α-AMINOPHOSPHONIC MONOESTER<br />
Jianfeng Zhang, Zhiwei Miao, Zhanwei Cui and Ruyu Chen<br />
(State Key Laboratory of Elemento-Organic Chemistry, Research Institute of Elemento-Organic<br />
Chemistry, Nankai University, Tianjin 300071, China)<br />
α-Aminophosphonic and phosphinic acids are the phosphorous analogues of α-aminocarboxylic<br />
acids, and therefore have biological importance both in themselves and as building blocks for<br />
peptides [1] . They have acquired great attention in synthetic organic chemistry and a number of<br />
synthetic methods have been developed during past two decades. Of these methods, nucleophilic<br />
addition of phosphites to imines catalyzed by a base or an acid is the most convenient one. A<br />
variety of metal halides such as TiCl4 [2] , InCl3 [3] , TaCl5-SiO2 [4] , Mg(ClO4)2 [5] have been used as<br />
Lewis catalysts in methylene chloride or other organic solvent to promote this addition. To avoid<br />
these disadvantages of the use of organic solvents, a couple of modifications using montmorillonite<br />
clay [6] and alumina [7] in dry media under microwave irradiation have been reported. In 2002, Ranu [8]<br />
reported a more practical green alterative for the synthesis of α-aminophosphonates by a<br />
three-component condensation of carbonyl compounds (aldehydes and ketones), amines and diethyl<br />
phosphite at 75–80°C in neat without any solvent and catalyst. We would like to disclose a practical<br />
and green method for the synthesis of N-protected o-hydroxyl-phenyl-α-aminophosphonic<br />
monoester (Scheme 1).<br />
O<br />
H3CH2CO P<br />
H3CH2CO 1<br />
O<br />
NH + +<br />
2<br />
Cl<br />
R1 R2 2<br />
O<br />
P<br />
O<br />
3<br />
no catalyst<br />
solvent-free, r.t.<br />
Scheme 1<br />
H2O O<br />
H3CH2CO H<br />
P N<br />
H3CH2CO R1 4<br />
HO<br />
O<br />
P O<br />
OH<br />
R2<br />
4 R1 R2<br />
Yield (%)<br />
Tab. 1<br />
4 R1 R2<br />
Yield (%)<br />
4a p-Cl-C6H5 H 80 4f p-CH3O-C6H5 H 90<br />
4b o-Cl-C6H5 H 92 4g p-NO2-C6H5 H 93<br />
4c p-Br-C6H5 H 89 4h (CH2)5 84<br />
4d o-Br-C6H5 H 85 4i CH3 CH3 87<br />
4e C6H5 H 91<br />
Reference<br />
[1] Kukhar, V. P.; Hudson, H. R. Aminophonic and Aminophinic Acids Chemistry and Biological Activity. John<br />
206
P-44<br />
A NOVEL MECHANISM ABOUT THE CLEAVGE OF N-GLYCOSIDIC BOND IN<br />
ELECTROSPRAY IONIZATION TANDEM MASS SPECTRA OF NUCLEOTIDE<br />
Jihong Liu 1 , Shuxiao Cao 1 , Ruyi Zou 1 , Jiansha Lu 1 , Xincheng Liao 1 , Yufen Zhao 1,2*<br />
3. Key Laboratory of Chemical Biology and Organic Chemistry, Department of Chemistry, Zhengzhou University,<br />
Zhengzhou, 450052, P.R.China<br />
4. Key Laboratory for Bioorganic Phosphorus Chemistry of Ministry of Education, Department of Chemistry School<br />
of Life Sciences and Engineering, Tsinghua University, Beijing 100084, P.R.China<br />
ESI-MS/MS has become an important analytical tool for the analysis of nucleotide 、<br />
oligonucleotide and their derivatives 1 . Nucleotides are the basic unit of nucleic acid, so its<br />
fragmentation pathways in electrospray ionization tandem mass spectra will give some implication<br />
on the analysis of oligonucleotide using ESI-MS/MS. Nucleotides often gives the fragment<br />
originated from the cleavage of the N-glycosidic bond, and this cleavage was expressed that a new<br />
double bond generated in the sugar moiety 2,3 . However, when we used deuterium to substitute<br />
active hydrogene of nucleotide and study it by ESI mass spectrometry, we presented a new<br />
mechanism about the cleavge of the N-glycosidic bond. Instead of generating a double bond in<br />
sugar moiety, the novel mechanism is 5’-,3’-nucleotides produced cycle ions shown as figure1.<br />
Table 1 the ions of deuterated and non-deuterated nucleotides<br />
Sample name Precursor ions Fragment ions (M-Base)<br />
5’- or 3’- Nucleotide [Nucleotide-H] - 211<br />
Deuterium-labeled nucleotide [Deuterium-labeled nucleotide –H] - 213<br />
B<br />
O<br />
O<br />
H H<br />
H H<br />
OD OD<br />
P<br />
DO O<br />
O- B<br />
DO<br />
H<br />
O<br />
H<br />
H<br />
O<br />
H<br />
OD<br />
O<br />
P O<br />
OD<br />
-<br />
O<br />
P<br />
O<br />
D<br />
O O<br />
O<br />
H H<br />
H<br />
OD<br />
H<br />
OD<br />
DO<br />
H<br />
O H<br />
H<br />
H<br />
O OD<br />
O<br />
O<br />
P<br />
O D<br />
207<br />
B -<br />
BD<br />
B -<br />
BD<br />
-O O<br />
P<br />
O O<br />
O<br />
H H<br />
H H<br />
OD OD<br />
DO<br />
H<br />
O H<br />
H<br />
H<br />
O OD<br />
O<br />
O<br />
P<br />
- O<br />
Figure1 Proposed mechanism of the N-glycosidic bond cleavge<br />
Refference<br />
1.E. Nordhoff,F. Kirpekar. P. Roepstorff. Mass spectrometry Reviews, 1996, 15,67-138<br />
2.Petr Fryčák,Renata Hušková,Tomáš Adam etc.J. Mass Spectrom. 2002, 37:1242-1248<br />
3.Hongxia Liu,Canfang Zhao,Jiansha Lu etc. Analytica Chimica Acta, 2006, 566:99-108
P-45<br />
SYNTHESIS OF ISOPRENOID OLEFIN ISOMERS VIA PHOSPHONIUM AND<br />
PHOSPHORYL STABILIZED CARBANIONS<br />
José S. Yu and David F. Wiemer<br />
Department of Chemistry, University of Iowa, Iowa City, IA 52242, USA<br />
Correspondence to: david-wiemer@uiowa.edu<br />
To provide tools for studies of isoprene metabolism, the complete set of four farnesol<br />
stereoisomers (1-4) and a pair of geranylgeraniol isomers (5 and 6) have been synthesized using a<br />
variety of modified Wittig and Horner-Wadsworth-Emmons (HWE) reactions. The central issue in<br />
the synthesis of the (2Z)-trisubstituted alcohols 2, 3, and 6 was the formation of the (Z)-allylic<br />
alcohol. Past examples provided precedent for use of a modified Wittig reaction that involved a<br />
-oxido ylide derived from an aldehyde in the construction of disubstituted (Z)-allylic alcohols.<br />
This strategy was extended to -oxido ylides derived from the unsymmetrical ketones geranylacetone,<br />
nerylacetone or (5E,9E)-farnesylacetone to achieve the desired substitution pattern with good olefin<br />
stereoselectivity (Org. Lett. 2005, 7, 4803-4806). Use of the same set of ketones in modified<br />
HWE reactions, including the Still-Gennari and Ando strategies, provided the corresponding<br />
(Z)-α,β-unsaturated esters and these esters could be reduced to the (Z)-allylic alcohols. However,<br />
this approach afforded lower (Z)-selectivity than obtained through the -oxido ylides. In contrast,<br />
preparation of the isoprenoids 1, 4, and 5 was based on a classical HWE condensation with the<br />
same set of starting ketones, and afforded the desired (2E)-isomers with good stereocontrol. Both<br />
the (2Z)- and (2E)-isoprenoid alcohols were converted to the respective bisphosphonates and/or<br />
-hydroxyphosphonates for further biological studies.<br />
OH<br />
OH<br />
OH<br />
(2E,6E)-farnesol (1) (2Z,6E)-farnesol (2) (2Z,6Z)-farnesol (3) (2E,6Z)-farnesol (4) OH<br />
OH<br />
(2E,6E,10E)-geranylgeraniol (5) (2Z,6E,10E)-geranylgeraniol (6) OH<br />
208
P-52<br />
INVESTIGATION ON INTERACTION OF L-METHIONINE DIPEPTIDE WITH CT-DNA<br />
BY ULTRAVIOLET SPECTROSCOPY METHOD<br />
Kui Lu* 1 ,Rui Li 1 ,Li Ma 1 ,Yufen Zhao 2<br />
1.School of Chemistry and Chemical Engineering, Henan University of Technology, Zhengzhou 450052, China;<br />
2.Department of Chemistry, Xiamen University, Xiamen 361005, China<br />
Phosphorus plays an important role in the origin of life and regulate and control of life, our<br />
investigative group have study the peptide formation reactions with the assistance of<br />
abio-phosphorous compound [1] .In this paper, we let the same mol POCl3 and L-methionine react in<br />
the presence of tetrahydrofuran as solvent, produce more short-chain polypeptides through control<br />
the reaction conditions and finally get the L-methionine dipeptide by HPLC. The product's structure<br />
has been characterized by the means of 1H-NMR, 13C-NMR and ESI-MS. Because Several small<br />
molecules have been shown to interact with DNA at the molecular level by specific binding modes.<br />
These binding studies were driven partly by the need to understand the mechanism of anticancer<br />
drug action [2] , to decipher the chemical basis for the carcinogenicity of environmental pollutants and<br />
toxic chemicals [3] and to serve as analogues in studies of protein-nucleic acid recognition [4] . The<br />
interaction of L-methionine dipeptide with ct-DNA was studied by ultraviolet spectra. The results<br />
showed that L-methionine dipeptide could interact with phosphorous groups of ct-DNA which<br />
would affect the conformation of ct-DNA (Fig 1). In general, the longer the time of interaction of<br />
L-methionine dipeptide with ct-DNA was, the more bovious the hypochromic effect became. In<br />
addition, the influences of concentration, phosphateion and pH values on the interaction of<br />
L-methionine dipeptide and ct-DNA were also investigated.<br />
Acknowledgements: The authors would like to thank the financial supports from the Chinese<br />
National Science Foundation (No.20272055, 20572016), Henan Province Science Foundation for<br />
Prominent Youth (No.0312000900) and Office of Education of Henan Province (No.<br />
2006KYCX017, 200510459015).<br />
209
References:<br />
[1] Lu, K.; Liu, Y.; Zhou, N.; Chen, Y.; Feng, Y.-P. ; Guo, X.-F.; Chen, W.; Qu, L.-B.; Zhao, Y.-F. Acta Chim. Sinica<br />
2002, 60, 372 (in Chinese)<br />
[2] M.J. Waring, in: G.C.K. Roberts (Ed.), Drug Action at the Molecular Level, Macmillan, London, 1977, p. 167<br />
[3] M.A. Warpehoskj, L.H. Hurley, Chem. Res. Toxicol. 1 (1988) 313<br />
[4] D. Porschke, in: W. Guschlballer, W. Saenger (Eds.) DNA–Ligand Interactions Specificity and Dynamics of<br />
Protein–Nucleic Acid Interactions, Plenum, New York, 1986, p. 85<br />
210
P-61<br />
REMINERALIZATION EFFECTS OF HONEYSUCKLE FLOWER SOLUTION ON<br />
INITIAL ENAMEL CARIOUS LESIONS IN VITRO<br />
Linglin Zhang<br />
As we have known, 96 percent of dental enamel is the chemical substance of inorgance.<br />
Hydrosyapatite is the elemental structure units of enamel. Enamel also contains octacalcium<br />
phosphate, calcium phosphate dihydrate, dicalcium phosphate anhydrous, tricalcium phosphate, and<br />
amorphous calcium phosphate. In oral cavity, the process of enamel demineralization and<br />
remineralization is alterative. During this period, if demineralization plays predominant role, it will<br />
result in carious lesions on the enamel surface. on the other hand, if remineralization plays<br />
predominant role as a result of artifical method, initial carious lesions will be restored. In this<br />
experiment, the effects of Honeysuckle Flower on remineralization of initial enamel carious lesions<br />
were studied in vitro. This helps to make Honeysuckle Folwer as some kinds of natural anticarious<br />
drugs to treat the initial enamel cavious lesions.<br />
The labial enamel from crowns of the newly extracted fresh bovine incisors were made into<br />
enamel blocks in the same size. Then they were grounded and polished. Those blocks without<br />
calculus, pigments, lisions, fluoxic cachexia and cracks were chosen to be dipped in acid solution of<br />
PH 4.5. After 72 hours, the artificial early lesions emerged on the surface of labial enamel. Next, 30<br />
blocks of them with suface microhardness between 311.00 kHN and 315.00kHN entered the phae of<br />
remineralization.<br />
Using 50 g/L Honeysuckle Flower(group 1),1 g/L NaF(group 2) and deionized water(group 3) in<br />
the first step of PH-cycling respectively, 30 blocks were randomly divided into three groups. After<br />
12 times of pH-cycling, microhardness of enamel surface was measured on the labial enamel blocks,<br />
and the recovery percentage of it (% SMHR) was calculated.With X-ray EDS, weight percentage of<br />
Ca and P on the surface of remineralized enamel was measured. The morphology of remineralized<br />
enamel was observed by polarizing microscope. The result showed that microhardness of enamel<br />
surface in group 1and 2 increased obviously. Weight percentage ratio of Ca and P on the surface of<br />
enamel in group 3 was much less than the other two groups. The density of lesioned layer on the<br />
surface in group 1and 2 grew heavily obviously, and the thickness of it lessened. It can be<br />
concluded that Honeysuckle Flower can promote the remineralization of initial enamel carious<br />
lesions, so it can become a kind of new natural anticarious medicine.<br />
211
P-72<br />
SELF-ASSEMBLY OF L-GLUTAMINE INTO OLIGO-PEPTIDES MEDIATED BY<br />
PHOSPHRORIC CHLORIDE<br />
Li Ma, Ming-xiu Lü, Wei-na Cao, Kui Lu*<br />
School of Chemistry and Chemical Engineering, Henan University of Technology, Zhengzhou 450052, China<br />
Oligopeptides can act as drug or precursor of drug because of their strong bioactivity, which has<br />
gained significant attraction. Therefore, the synthesis of peptides became a research focus of<br />
organic synthesis [1] . Even though there are lots of papers about peptide synthesis related to the<br />
chemical evolution of life, there is litter investigation on the intrinsic relationship between the<br />
phosphorus and amino acids [2] .<br />
In this paper, the self-assembly reactions of L-glutamine with phosphroric chloride were studied<br />
by using electrospray ionization mass spectrometry (ESI-MS). On quenching with water, the<br />
reaction mixtures, which were produced under different reaction conditions, yielded the<br />
corresponding peptides. Influence of the reaction conditions such as reaction time, solvent, and<br />
temperature on self-assembly into oligo-peptides for L-glutamine were monitored. The reactions are<br />
shown in scheme 1.<br />
H<br />
H<br />
N<br />
O<br />
H<br />
C C<br />
CH 2<br />
CH 2<br />
C<br />
NH 2<br />
O<br />
OH<br />
PCl 5<br />
Scheme 1 Self-assembly of L-glutamine into oligo-peptides mediated by phosphroric chloride<br />
In conclusion, the proper condition of direct synthesis was reaction time of 4h, in the solvent of<br />
acetonitrile and temperature of 50 ℃ . A series of mass peaks corresponding to oligo-peptides<br />
of<br />
L-Gln were observed by electrospray ionization mass spectrometry (ESI-MS). The dipeptide<br />
(m/z=275) and the cyclotripeptide (m/z=385) were the main compounds in the reaction mixtures.<br />
Acknowledgements<br />
The authors would like to thank the financial supports from the Chinese National Science<br />
Foundation (No.20272055, 20572016), Henan Province Science Foundation for Prominent Youth<br />
(No.0312000900) and Office of Education of Henan Province (No. 2006KYCX017).<br />
References<br />
[1] N. Zhou, K. Lu, Y. Liu, Y. Chen, G. Tang, S.-X. Cao, L.-B. Qu, Y.-F. Zhao. Rapid Commun Mass Sp 2002,16 (8):<br />
790<br />
[2] N. Zhou, K. Lu, Y. Liu, et al, The abstracts of the 13 th international conference on the origin of life, 2002, P87<br />
212<br />
H 2O<br />
H<br />
H<br />
N<br />
O<br />
H<br />
C C OH<br />
n<br />
CH 2<br />
CH 2<br />
C<br />
NH 2<br />
O
P-74<br />
SYNTHESIS AND BIOLOGICAL ACTIVITY OF α-HYDROXYPHOSPHONATES<br />
Na Zuo and Hong-Wu He*<br />
Key Laboratory of Pesticide and Chemical Biology of Ministry of Education<br />
College of Chemistry Central China Normal University, Wuhan 430079, P. R. China<br />
Several α- hydroxyphosphonates have been prepared by the Pudovik reaction. 5,5- dimethyl -4phenyl<br />
-1,3,2- dioxaphosphinan -2- one reacts with aldehyde to form the title compounds in good<br />
yields(80-90%). Triethylamine is added as catalyst .The best reaction time is 2-3 hours and the<br />
temperature is 25℃. All 10 of compounds were confirmed by 1 HNMR, IR and element analysis,<br />
and one was examined by the single crystal X-ray diffraction. The results of preliminary bioassay<br />
indicated that the title compounds exhibited a certain herbicidal activities.<br />
CHO + PhCHO<br />
PCl3<br />
EtOH<br />
Ph<br />
2<br />
O O<br />
PH<br />
O<br />
213<br />
Ph<br />
KOH<br />
OH<br />
EtOH OH<br />
RCHO<br />
Et3N Ph<br />
R= alkyl, Ph, substituted Ph, Furyl<br />
1<br />
HO<br />
O R<br />
O P<br />
O<br />
Acknowledgments<br />
Financial support by National Basic Research Program of China (2003CB114400) and NNSFof<br />
China ( 20372023)<br />
REFERENCES<br />
Meier, C. Angew. Chem. Int. Ed. Engl. 35, 70 (1996)<br />
Shi, D. Q.; Wei, J. and Tan, X. S., Chin. J. Org. Chem. 12, 1602 (2005)<br />
He, H. W.; Wang, T. and Yuan, J. L. J. Organomet. Chem. 690, 2608 (2005)<br />
Sudha K.; Senthamizh S. R. and Kumara S. K. C. Synthesis. 2, 207(1997)<br />
3
P-85<br />
BIO-RELEVANT DERIVATIVES OF CALIXARENE PHOSPHONIC ACIDS<br />
S.Cherenok a , A.Vovk b , I.Muravyova b , A.Marcinowicz c , J.Poznanski c , O. Muzychka b , V.Kukhar b , W.Zielenkiewicz c ,<br />
V.Kalchenko a<br />
a Institute of Organic Chemistry, NAS of Ukraine, 02660, Kyiv-94, Ukraine<br />
b Institute of Bioorganic Chemistry and Petrochemistry, NAS of Ukraine, 02660, Kyiv-94, Ukraine<br />
c Institute of Physical Chemistry, Polish Academy of Sciences, 01-224, Warsaw, Poland<br />
Calixarenes endowed with aminoacid or peptide units demonstrate a high bio-activity [1]. Within<br />
the project we have synthesized and investigated a series of the cone-shaped calix[4]arenes<br />
functionalysed at the macrocyclic upper rim with bio-relevant α- hydroxyphosphonic or<br />
α-aminophosphonic or methylenebisphosphonic acid groups [2-4].<br />
Complexation of calix[4]arene bis-α-hydroxyphosphonic acids (Racemic or Meso forms) with a<br />
series of natural amino acids and dipeptides was investigated by calorimetry, NMR and molecular<br />
modelling methods [3]. The association constants of the host-guest complexes in methanol (up to<br />
45000 M-1) were determined. Hydrophobic, electrostatic, N-H-π, C-H-π interactions in the<br />
host-guest complexes are discussed.<br />
Calix[4]arenes grafted with the α-hydroxyphosphonic or α-aminophosphonic or<br />
methylene-bis-phosphonic acid groups significantly overcome modelling acyclic phosphonic acids<br />
in inhibition of bovine intestinal and porcine kidney alkaline phosphatases [2, 4]. In Tris-HCl buffer<br />
(pH 9) the (R,R) diastereomer of calixarene bis-α-aminophosphonic acid demonstrates 50 fold<br />
higher potency than the (S,S) diastereomer [4].<br />
References:<br />
[1] A.Casnati, F. Sansone, R.Ungaro. Acc. Chem. Res. 2003. 36. 246-254.<br />
[2] A.I. Vovk, V.I. Kalchenko, S.O. Cherenok, V.P. Kukhar, O.V. Muzychka, M.O. Lozynsky. Org. Biomol. Chem.<br />
2004. 2. 3162-3166.<br />
[3] W. Zielenkiewicz, A. Marcinowicz, S. Cherenok, V. Kalchenko, J. Poznański. Supramolecular Chemistry. 2006. 18.<br />
167-176.<br />
[4] S. Cherenok, A.Vovk, I. Muravyova, A. Shivanyuk, V. Kukhar, J. Lipkowski, V. Kalchenko. Organic Letters. 2006.<br />
8. 549-552.<br />
214
P-123<br />
EFFECTS OF PHOSPHORYLATION ON THE CONFORMATION<br />
OF PEPTIDE AND PROTEIN<br />
Yan-Mei Li, Yu-Fen Zhao<br />
Key Laboratory of Bioorganic Phosphorus Chemistry and Chemical Biology (Ministry of Education), Department of<br />
Chemistry, Tsinghua University, Beijing 100084<br />
The regulation of biochemical activity by protein post-translational modifications is a pervasive<br />
cellular control mechanism. Protein phosphorylation is a key posttranslational modification<br />
mechanism controlling the conformation and activity of many proteins. Through the use of<br />
phosphorylation cycles and cascades, the cell is able to regulate a diverse set of processes, including<br />
cellular movement, reproduction and metabolism. It is the simplicity, reversibility and flexibility of<br />
phosphorylation that explains why it has been adopted as the most general control mechanism of the<br />
cell. The use of the phosphorylation/dephosphorylation of a protein as a control mechanism has<br />
many advantages: rapid, taking as little as a few seconds, no require new proteins to be made or<br />
degraded and easily reversible.<br />
With regard to its regulatory mechanism, it is of fundamental importance to study the role and<br />
function in protein networks by phosphorylation. Increasing evidence has implicated an essential<br />
role of phosphorylation by activating α-COOH to form amide bond in peptide synthesis, increasing<br />
the cis content of the peptidyl-propyl amide bond, causing local structure more ordered, regulating<br />
intrisically disorder domain, and effecting the protein distribution in cell. Phosphate acts as the<br />
molecular switch to modulate protein networks.<br />
Reference<br />
[1] Chen YX, Du JT, Zhou LX, Li YM*, et al. Alternative O-GlcNAcylation/ O-Phosphorylation of Ser16 Induce<br />
Different Conformational Disturbances to the NTesrminus of Murine Estrogen Receptor β. Chem. Biol. 2006, 13:<br />
937-944.<br />
[2] Du JT, Li YM*, Wei W, et al. Low Barrier Hydrogen Bond Between Phosphate and Amide Group in Phosphopeptide.<br />
J. Am. Chem. Soc. 2005, 127: 16350-16351.<br />
[3] Du JT, Li YM*, Ma QF, et al. Synthesis and Conformational Properties of Phosphopeptides Related to the Human<br />
Tau Protein. Regul. Pept. 2005, 130: 48-56.<br />
[4] Schlummer S, Vetter R, Kuder N, Chen YX, Li YM, et al. Influence of Serine O-Glycosylation or O-Phoshorylation<br />
Close to the vJun Nuclear Localisation Sequence on Nuclear Import. ChemBioChem 2006, 7: 88-97.<br />
[5] Chen ZZ, Tan B, Li YM*, et al. Activity Difference between α-COOH and β-COOH in N-Phosphoryl Aspartic Acids.<br />
J. Org. Chem. 2003, 68: 4052-4058.<br />
[6] Chen ZZ, Li YM*, Wang HY, et al. Theoretical Study on the Rearrangement of β-OH and γ-OH in ESI Mass<br />
Spectrometry by N-phosphorylation. J. Phys. Chem. A 2004, 108: 7686-7690.<br />
215
P-124<br />
SYNTHESIS AND PURIFICATION OF L-HYDROXYPROLINE OLIGO-PEPTIDES<br />
ASSISTED BY PHOSPHORUS OXYCHLORIDE<br />
Yan-ting Sun, Ye-zhen Feng, Kui Lu*<br />
School of Chemistry and Chemical Engineering, Henan University of Technology, Zhengzhou 450052, China<br />
We have demonstrated that α-amino acids could be assembled into oligo-peptides with the<br />
assistance of inorganic phosphorus [1] . Similar results were obtained in the reaction of<br />
L-Hydroxyproline(L-Hypo) and phosphorus oxychloride. To find the best experimental condition,<br />
the solvent, reaction time, reaction temperature, the molar ratio of L-Hypo and POCl3 were<br />
examined. The results obtained suggested that the proper condition of direct synthesis was the<br />
molar ratio of L-Hypo and POCl3 of 1 to 1, reaction temperature of 20 ℃ , reaction time of 2h and in<br />
acetonitrile as solvent. A series of mass peaks corresponding to oligo-peptides of L-Hypo were<br />
observed by electrospray ionization mass spectrometry (ESI-MS) and multistage electrospray<br />
ionization mass spectrometry (ESI-MS/MS).The dipeptide Hypo-Hypo (m/z=245), tripeptide<br />
Hypo-Hypo-Hypo(m/z=358), as well as cyclo-dipeptide cyclo-Hypo-Hypo (m/z=227) were purified<br />
by reversed phase high-performance liquid chromatography(RPLC). This approach may provide a<br />
sound basis for developing new technologies of peptides synthesis of practical use.<br />
Figure 1 RPLC of the reaction mixtures<br />
This work was financial supported by National Nature Science Foundation of China<br />
(No.20272055, 20572016) , Henan Province Science Foundation for Prominent Youth<br />
(No.0312000900) and Office of Education of Henan Province (No. 2006KYCX017).<br />
References<br />
[1] Lu, K.; Liu, Y.; Zhou, N.; Chen, Y.; Feng, Y.-P. ; Guo, X.-F.; Chen, W.; Qu, L.-B.; Zhao, Y.-F. Acta Chim. Sinica<br />
2002,60,372 (in Chinese).<br />
216
P-125<br />
SELF-ASSEMBLY OF L-GLUTAMINE INTO OLIGO-PEPTIDES MEDIATED BY<br />
PHOSPHRORIC CHLORIDE<br />
Li Ma, Ming-xiu Lü, Wei-na Cao, Kui Lu*<br />
School of Chemistry and Chemical Engineering, Henan University of Technology, Zhengzhou 450052, China<br />
Oligopeptides can act as drug or precursor of drug because of their strong bioactivity, which has<br />
gained significant attraction. Therefore, the synthesis of peptides became a research focus of<br />
organic synthesis [1] . Even though there are lots of papers about peptide synthesis related to the<br />
chemical evolution of life, there is litter investigation on the intrinsic relationship between the<br />
phosphorus and amino acids [2] .<br />
In this paper, the self-assembly reactions of L-glutamine with phosphroric chloride were studied<br />
by using electrospray ionization mass spectrometry (ESI-MS). On quenching with water, the<br />
reaction mixtures, which were produced under different reaction conditions, yielded the<br />
corresponding peptides. Influence of the reaction conditions such as reaction time, solvent, and<br />
temperature on self-assembly into oligo-peptides for L-glutamine were monitored. The reactions are<br />
shown in scheme 1.<br />
H<br />
H<br />
N<br />
O<br />
H<br />
C C<br />
CH 2<br />
CH 2<br />
C<br />
NH 2<br />
O<br />
OH<br />
PCl 5<br />
Scheme 1 Self-assembly of L-glutamine into oligo-peptides mediated by phosphroric chloride<br />
In conclusion, the proper condition of direct synthesis was reaction time of 4h, in the solvent of<br />
acetonitrile and temperature of 50 ℃ . A series of mass peaks corresponding to oligo-peptides<br />
of<br />
L-Gln were observed by electrospray ionization mass spectrometry (ESI-MS). The dipeptide<br />
(m/z=275) and the cyclotripeptide (m/z=385) were the main compounds in the reaction mixtures.<br />
Acknowledgements: The authors would like to thank the financial supports from the Chinese<br />
National Science Foundation (No.20272055, 20572016), Henan Province Science Foundation for<br />
Prominent Youth (No.0312000900) and Office of Education of Henan Province (No.<br />
2006KYCX017).<br />
References:<br />
[1] N. Zhou, K. Lu, Y. Liu, Y. Chen, G. Tang, S.-X. Cao, L.-B. Qu, Y.-F. Zhao. Rapid Commun Mass Sp 2002,16 (8):<br />
790<br />
[2] N. Zhou, K. Lu, Y. Liu, et al, The abstracts of the 13 th international conference on the origin of life, 2002, P87<br />
H 2O<br />
217<br />
H<br />
H<br />
N<br />
O<br />
H<br />
C C<br />
CH 2<br />
CH 2<br />
C<br />
NH 2<br />
O<br />
OH<br />
n
P-135<br />
DESIGN AND SYNTHESIS OF 5’-FLUORESCENTLY LABELED NUCLEOSIDES<br />
Zheng Jinyun*; Zhang Shufeng,Zhao Yufen<br />
Department of chemistry, Zhengzhou university, Zhengzhou, 450052 P.R. China<br />
The application of fluorescence methods to macromolecules study has been a dramatic surge in<br />
the last few years by providing useful information concerning structure, distance, orientation,<br />
complexation and location of biomolecules. Fluorescence spectroscopy provides an important tool<br />
for the detection and probing of structure, dynamics and interactions of nucleic acid with relating<br />
compounds. Many fluorescent nucleosides has been used as site-spectific probes for structure and<br />
dynamic of nucleic acids studies. The fluorescent nucleosides are valuable as sensitive reporter<br />
probes for detecting the change of the microenviroment in DNA.<br />
In this paper, the fluorophore group such as carbazole, anthracene, and coumarin was introduced<br />
to the 5’ terminus of the nucleoside(Fig1) by using the nucleoside hydrogen phosphonate diester<br />
through reacting protected nucleoside with PCl3; followed by alcoholysis with corresponding<br />
alcohol; protected nucleoside hydrogen phosphonate derivatives are obtained in reasonable yields.<br />
If the mixture of primary alcohol and t-butanol(1:1) is used as alcoholysis agent, the<br />
o-n-alkyl-5-H-phosphonate is generated when the primary alcohol has different fluorophore group.<br />
A range of 5’-fluorescently lablled nucleosides were synthesized. The 5’-N-alkyl-carbazole<br />
lablled nucleoside was synthesized and characterized by HNMR.ESI-MS, and fluorescence<br />
spectroscopy. A lot of information associated with the structure and function of biomacromolecules<br />
can be obtained by analyzing the fluctuation of fluorescence intensity and polarization.<br />
LO<br />
O<br />
P<br />
H<br />
O<br />
218<br />
B<br />
O<br />
O O<br />
L=fluorophore<br />
B=uracil,Guanine
P-140<br />
MICROWAVE-ASSISTED SYNTHESES OF 2',3'-O-ISOPROPYLIDENE<br />
RIBONUCLEOSIDE 5'-MONOPHOSPHATES<br />
Z. Wang, Y.F. Zhao*<br />
The Key Laboratory of Bioorganic Phosphorus Chemistry, Ministry of Education, Department of Chemistry, School of<br />
Life Sciences and Engineering, Tsinghua University, Beijing 100084. E-mail:zhaofy@tsinghua.edu.cn<br />
Phosphate monoesters are some of the most important substances in medicina l chemistry,<br />
materials chemistry, and so on. 1Many methods for preparing Nucleoside 5’-monophosphates have<br />
been reported. 2 The application of microwaves, as an efficient heating source for organic<br />
reactions , was recognized in the 1986. 3 Since then, numerous successful reactions with<br />
dramatically enhanced reaction rates have been disclosed. 4-6 Very high yields and clean reactions<br />
have been obtained using only small amounts of energy. We synthesize 5’-monophosphate of<br />
ribonucleosides without the protection of amino groups of nucleobases. Since secondary hydroxy<br />
groups of ribonucleosides also react with phosphoric acid, 2',3'-O-isopropylidene ribonucleosides<br />
were used as substrates. The reactions of 2',3'-O-isopropylidene uridine (1), adenosine (2), cytidine<br />
(3), and guanosine (4) with 2 equiv of phosphoric acid in the presence of tributylamine and<br />
N-alkylimidazole, which is promoted by microwave irradiation in 500W, gave their<br />
5'-monophosphates selectively in respective yields of 86, 86,71, and 83%. In contrast, that same<br />
yields were obtained in Dehydrative Condensation reactions performed under microwave irradiation<br />
can be completed within 4-5 min whereas 6-8 h is required with conventional heating. It is also<br />
likely that the widespread acceptance of this technique, as an important tool for the development of<br />
laboratory-scale environmentally conscious chemistry, will result in microwave synthesizer<br />
becoming an integral part of every modern organic laboratory.<br />
Reference<br />
[1] Hayakawa, Y. Comprehensive Organic Synthesis; Trost, B. M., Fleming, I., Winterfeldt, E., Eds.; Pergamon:Oxford,<br />
1991, 6, 601-630.<br />
[2] Sakakura, A.; Katsukawa, M.; Ishihara, K. Selective Synthesis of Phosphate Monoesters by Dehydrative<br />
219
Condensation of Phosphoric Acid and Alcohols Promoted by Nucleophilic Bases. Org. Lett. 2005, 7, 1999-2002.<br />
[3] Gedye, R. et al. The use of microwave ovens for rapid organic synthesis. Tetrahedron Lett. 1986, 27, 279–282<br />
[4] Larhed, M.; Hallberg, A. Microwave-Assisted High-Speed Chemistry: A New Technique in Drug Discovery. Drug<br />
Discovery Today. 2001, 6, 406-416.<br />
[5] Strauss, C. R.; Trainor, R. W. Invited Review-Developments in Microwave-Assisted Organic-Chemistry. Aust. J.<br />
Chem. 1995, 48,1665-1692.<br />
[6] Elander, N.; Jones, J. R.; Lu, S. Y.; Stone-Elander, S. Microwave-Enhanced Radiochemistry. Chem. Soc. Rev. 2000,<br />
29,239-250.<br />
220
P-141<br />
THE CORRELATION BETWEEN THE ESTIMATED PARTITION COEFFICIENT P<br />
AND CAPACITY FACTOR K OF AMINO ACIDS AND PHOSPHORYL AMINO ACIDS<br />
Hongxia Liu, Canfang Zhao, Mian Liu, Yuyang Jiang*, Yufen Zhao<br />
The Key Laboratory of Chemical Biology, Guangdong Province, Graduate School at Shenzhen, Tsinghua University,<br />
Shenzhen 518055, P.R.China<br />
The modifications of amino acids(aas) by phosphorylation, methylation, acetylation and<br />
glycosylation play a key role in the regulation of the activities of proteins and peptides. In our group,<br />
various N-(O, O-Diisopropyl) phosphoryl amino acids (Dipp-aas) were synthesized by<br />
N-phosphoryl of amino acids with diisopropyl phosphite. For further investigation on the<br />
bioavailability and pharmacokinetics of these compounds, we have also developed a practical<br />
HPLC method with an NH2 column to analyse the stability of these Dipp-aas in different solution.<br />
In this work, we observed the linear relationships between the estimated logarithm of partition<br />
coefficient (n-octanol/water, Log P) and the logarithm of capacity factor (Log k) of Dipp-aas and<br />
aas. The results showed that the correlation equations of Log P-Log k for dipp-aas was Log P<br />
=6.3742 Log k +0.8615 (r2=0.9745) and for aas was Log P =-Log k-3.3147(r2=0.8052),<br />
respectively. The diversity of slopes revealed that the separation mechanism of dipp-aas and aas<br />
on NH2 column was very different. It implied that separation of Dipp-aas was likely based on the<br />
reversed-phase partition mechanism, but for aas it was based on a weak ion-exchange mechanism.<br />
The correlation equation of Log P-Log k could be applied to predict the retention times and to<br />
optimize HPLC separation conditions of other N-(O,O-diisopropyl) phosphoryl amino acids and<br />
peptides.<br />
Acknowledgments<br />
This work was supported by the National Natural Science Foundation of China (No. 20472043, 20572060, 20672068),<br />
Mega-Project of Science Research of Ministry of Science and Technology of China (No.2005CCA03400) and the<br />
Project of Science and Technology of Guangdong Province ( 2005A11601008, 06028200).<br />
221
P-148<br />
SYNTHESIS Of α, β-DIFLUOROMETHYLENEBISPHOSPHONATE ANALOGS OF<br />
dNTPs: PROBES FOR DNA POLYMERASE β<br />
Thomas G. Upton 1 , Boris A. Kashemirov 1 , Charles E. McKenna 1 ,*, Myron F. Goodman 1 , G. K. Surya Prakash 1 , Roman<br />
Kultyshev 1 , Vinod K. Batra 2 , David D. Shock 2 , Lars C. Pedersen 2 , William A. Beard 2 , and Samuel H. Wilson 2<br />
1 Department of Chemistry, University of Southern California, Los Angeles, CA 90089 USA<br />
2 Laboratory of Structural Biology, NIEHS, Research Triangle Park, NC 27709 USA<br />
In an ongoing study of the mechanisms underlying DNA polymerase β catalysis and fidelity we<br />
have synthesized the dTPP, dATP and dCTP α, β-difluoromethylene analogs (1, 2, and 3,<br />
respectively). These analogs cannot be cleaved by the enzyme due to their hydrolysis-resistant<br />
Pα-C-Pβ group, replacing the phosphoric anhydride in the natural nucleotides. The dT and dA<br />
nucleotide analogs 1 and 2 were previously synthesized by Blackburn et al. by reaction of the<br />
corresponding dNMP 5’-tosylates 4, 5 with difluoromethylenebisphosphonate 6 followed by<br />
coupling of the resultant dNDP analogs with p-NO2Bn phosphoric acid morpholidate and<br />
deprotection by hydrogenolysis on Pd, which last step, however, is problematic with dC. We report<br />
a convenient method for synthesis of 3, which can also be used to prepare purine nucleotide analogs<br />
such as 2, in which the bisphosphonate nucleotide intermediate is phosphorylated enzymatically in<br />
excellent yield using a catalytic amount of ATP together with excess PEP in HEPES buffer using a<br />
mixture of PK and NDPK. Two-stage purification employing ion-exchange, then RP preparative<br />
HPLC afforded the nucleotide analogs in exceptional purity, as determined by standard NMR,<br />
HPLC and MS analysis, with suppression of the background primer extension activity that may be<br />
observed with less pure preparations. The structure of the dT CF2 analog in a ternary complex with<br />
pol β, primer and template and relevant enzyme inhibition data are discussed in an assessment of<br />
α,β nucleotide analog binding to the active site.<br />
222
O-167<br />
SYNTHESIS OF BICYCLIC FUROPYRIMIDINE DEOXYNUCLEOSIDES<br />
CONJUGATED WITH N-DIISOPROPYLPHOSPHORYL AMINO ACIDS<br />
Qiang Xiao A *, Xuanye Jin B , Weihong Xiao A , Yong Ju B<br />
aJiangxi Key Laboratory of Organic Chemistry, Jiangxi Science and Technology Normal University, Nanchang 330013,<br />
P. R. China<br />
bKey Laboratory of Bioorganic Phosphorus Chemistry & Chemical Biology, Ministry of Education, Department of<br />
Chemistry, Tsinghua University, Beijing 100084, P. R. China<br />
The bicyclic furo[2,3-d]pyrimidine nucleosides represent an entirely new class of fused furo<br />
pyrimidine derivatives with highly selectivity for varicella-zoster virus (VZV). Although the precise<br />
action mechanism of these analogues remains to be elucidated, it is clear that their antiviral activity<br />
depending on the VZV-encoded thymidine kinase phosphorylation. In our project for developing<br />
anti-VZV drugs, a series of 6-subsitituted furo[2,3-d]pyrimidine nucleosides conjugated with<br />
N-diisopropylphosphoryl amino acids were synthesized (Scheme 1).<br />
DMTO<br />
d<br />
HN<br />
O<br />
O N<br />
O<br />
OH<br />
1<br />
DMTO<br />
I<br />
a<br />
N<br />
O N<br />
O<br />
HO<br />
4<br />
DMTO<br />
O<br />
O<br />
HN<br />
O N<br />
O<br />
HO<br />
NH 2<br />
2<br />
HO<br />
O<br />
NH<br />
R<br />
O P O<br />
O<br />
5a-e<br />
O<br />
223<br />
N<br />
O<br />
e<br />
c<br />
HO<br />
DMTO<br />
N<br />
O N<br />
O<br />
HO<br />
O<br />
HN<br />
O<br />
O N<br />
O<br />
HO<br />
6a-e<br />
3<br />
NH<br />
O<br />
6a R= CH 3;6bR=PhCH 2<br />
6c R= Isopropyl; 6d R= Pro-<br />
Scheme 1. Synthesis of bicyclic furopyrimidine deoxynucleosides 6a-e<br />
References<br />
1. McGuigan, C.; Yarnold, C. J.; Jones, G. et al J. Med. Chem.1999, 42, 4479-4484.<br />
2. Cheng CM, Liu XH, Zhao YF, et al. Origin Life Evol. Bio. 2004, 34, 455-464.<br />
O<br />
NH<br />
P<br />
O<br />
R<br />
O<br />
NH 2
P-168<br />
EFFECTS OF CHRYSIN AND ITS TETRAETHYL BIS-PHOSPHORIC<br />
ESTER IN THE CELL CYCLE AND P 21/WAF1 PROTEINS OF THE HUMAN<br />
CERVICAL CARCINOMA CELL LINE HELA<br />
Ting Zhang 1,2 , Xiaolan Chen 1 , Lingbo Qu 1 , Manji Sun 2 , Yufen Zhao 3<br />
1. Key Laboratory of Chemical Biology, Department of Chemistry, Zhengzhou University, Zhengzhou, 450052<br />
2. Institute of Toxicology and Medicine, Academy of Military Medical Sciences, Beijing 100850, China<br />
3.The Key Laboratory for Bioorganic Phosphorus Chemistry, Department of Chemistry School of Life Sciences and<br />
Engineering, Tsinghua University, Beijing 100084<br />
Abstract Aim: To investigate the influences of CR/CP on the cell cycle and p 21WAF1 expression<br />
in the human cervical carcinoma cell line (Hela). Methods: human cervical carcinoma cell line<br />
(Hela) was treated with 10μM CR and CP respectively , the cell cycle and p 21WAF1 expression was<br />
determined with flow cytometry (FCM) and western immunobloting methods. Results: The cell<br />
cycle distribution and p 21WAF1 expression in the Hela cells treated with CR/CP were changed<br />
markedly as compared to vehicle-treated Control. The CR treatment resulted in an appreciable<br />
increase in the G0/G1 phase cell population and a decrease in the S phase cell populations,<br />
accompanied by up-regulation of p 21WAF1 expression. The CP could increase both in the G0/G1<br />
phase and G2/M phase cell populations, and induce p 21/WAF1 expression. Conclusion: CP could<br />
arrest cell cycle in both G0/G1 and G2/M phases accompanied with up-regulation p 21/WAF1<br />
expression, whereas CR only arrest G0/G1 phase cell cycle and induct p 21/WAF1 in Hela cells. This<br />
indicated that the CR and CP could arrest cell cycle of Hela cells in different ways.<br />
224
P-170<br />
THE PEPTIDE BOND FORMATION REACTION WITH PEPTIDES AND PROTEINS IN<br />
AQUEOUS SOLUTION BY INDUCEMENT OF N-PHOSPHORYL α-AMINO ACIDS<br />
Jia Ning Wang a, b , Yan Liu a , Dacheng He b , a<br />
, Yu-Fen Zhao*<br />
a. The Key Laboratory for Chemical Biology of Fujian Province, Department of Chemistry, Xiamen University,<br />
Xiamen, 361005, P. R. China<br />
b. The Key Laboratory for Cell Proliferation and Regulation Biology of Ministry of Education, College of Life Science,<br />
Beijing Normal University, Beijing 100875, P. R. China<br />
Jia Ning Wang: Tel: 13391726204; E-mail address: spaceman_jia@126.com<br />
In the work described in this paper, it was found that N-phosphoryl α-amino acids played an<br />
important role in the formation of long-peptides and proteins in aqueous solution under mild<br />
conditions (37℃) by mean of mass spectrometry.<br />
Due to the inducement of N-phosphoryl α-amino acids such as<br />
N-(O,O’-diisopropyl)phospho-L-α-alanine (abbr:N-DIPP-L-α-Ala), some different length peptides<br />
or proteins, such as GHRF(29 amino acid residues) and cytochrome c(104 amino acid residues),<br />
were added one amino acid residue to its N-terminal amino group in aqueous solution, respectively.<br />
The deconvoluted mass spectrogram showed that an additional increased MW of original<br />
peptide/protein could be detected. The mass difference of m/z of original peptide/protein and newly<br />
produced peak is almost the mass number of alanine residue (Mw: 71.1), if the added N-phosphoryl<br />
α-amino acid is N-DIPP-L-α-Ala. The relative intensity of m/z at M+71 which corresponding one<br />
alanine residue added to peptide/protein would increase when extended the incubation time of<br />
N-DIPP-L-α-Ala with peptide/protein.<br />
The strict proof and features of this peptide bond formation reaction was investigated through<br />
ESI-MS/MS by using different phosphoryl amino acids incubate with various modified and<br />
unmodified synthetic peptides such as Ala-Gln. The results showed that whenever a kind of<br />
N-DIPP-α-Amino acids was added to incubate with Ala-Gln. The resulting tripeptides would be<br />
detected and described as X-Ala-Gln. X represented amino acid residue from N-DIPP-α-Amino<br />
acid as reactant. This experiment results indicate that the addition of mass near 71.1Da represented<br />
alanine residue, and the added amino acid residue rooted in N-phosphoryl α-amino acid. The results<br />
of further incubation experiments by using modified peptides which N-terminal amino group was<br />
blocked but side chain native amino group was unchanged, showed that only α-amino<br />
group(N-terminal amino group) of peptides can be involved in the peptide bond formation reaction.<br />
In this study, two non-α-amino acids, N-DIPP-β-Ala and O-DIPP-α-Ser, were chosen to incubate<br />
with Ala-Gln in aqueous solution at the same condition respectively. The mass spectrum results<br />
showed that no peek indicating any peptides formed even incubated for 17 days. Considering the<br />
structure of natural α-amino acids and the intermediate described before, any non-natural amino<br />
acids, which structurally cannot form five membered ring cyclic penta-coordinate<br />
phosphoric-carboxylic mixed anhydride may not be able to form peptides[1]. The corresponding<br />
mechanism of the peptide bond formation reaction has been speculated that the five-membered ring<br />
penta-coordinate phosphoric intermediate may be involved in the process[2,3]. This mechanism<br />
suggested that why nature chose α-amino acids as primary blocks of protein.<br />
225
References<br />
[1] Jiang Y, Tan B, Chen ZZ, et al. Phosphoryl group differentiating alpha-amino acids from beta- and gamma-amino<br />
acids in prebiotic peptide formation. Int. J. Quant. Chem 2003 94 : 232-241<br />
[2] Fu H, Li Z L, Zhao Y F, et al. Oligomerization of N,O-bis(trimethylsilyl)-alpha-amino-acids into peptides mediated<br />
by o-phenylene phosphorochloridate. J. Am. Chem. Soc., 1999, 121: 291-295<br />
[3] Fu H, Tu G Z, Li Z L et al. New and efficient approach to eht synthesis of penta-coordinate spirobicyclic<br />
phosphoranes. J. Chem. Soc., Perkin Trans., 1997, 1:2021-2022<br />
226
P-172<br />
THE SYNTHESIS AND RESOLUTION OF THE OPTICLE ACTIVE DERIVATIVES OF<br />
N-THIOPHOSPHORAMIDATE DERIVATIVES<br />
Anfu Hu, Peng Liu , Pengxiang Xu ,Yufen Zhao*<br />
Department of Chemistry and The Key Laboratory for Chemical Biology of Fujian Province, College of Chemistry and<br />
Chemical Engineering, Xiamen University, Xiamen 361005, P. R. China.<br />
Introduced by Eckstein, phosphorothioate analogues of nucleotides have become an<br />
indispensable tool for studying the metabolism of nucleic acids. [1] However, the enzymatic synthesis<br />
of stereodefined oligo(deoxyribonucleoside phosphorothioate)s (PS-Oligos) is limited to the<br />
preparation of (all-Rp)-oligomers because of the stereoselectivity of available DNA and RNA<br />
polymerases. Stereodefined PS-Oligos were used for studying the mode of action of several<br />
bacterial and human enzymes [2] , and the stereodependent avidity of PS-Oligos toward<br />
complementary DNA or RNA. [3] So obtaining a pure diastereoisomer is very important.<br />
In this article, we report a convenient and efficient approach for the synthesis of<br />
N-thiophosphoramidate derivatives of nucleosides (1 and 2), depicted in Scheme 1, with total yield<br />
70-80%. The diastereoisomeric mixtures(1:1 ratio) were isolated by silica gel chromatography.<br />
R<br />
O<br />
P<br />
Cl<br />
Cl Cl<br />
P<br />
O<br />
P<br />
Cl<br />
R<br />
O<br />
or<br />
Cl<br />
O<br />
O N<br />
O O<br />
+<br />
O<br />
NH<br />
O<br />
O<br />
NH<br />
O N<br />
O<br />
HO<br />
HO<br />
O<br />
or<br />
O N<br />
O<br />
O N<br />
O<br />
NH<br />
O<br />
O<br />
NH<br />
O<br />
-5℃ CH 2Cl 2<br />
3h<br />
NH 2CHR'CHOOCH 3 S powder<br />
R.T. overnight<br />
227<br />
Cl<br />
P<br />
Cl<br />
Cl<br />
P<br />
Cl<br />
O<br />
O<br />
O<br />
NH<br />
O N<br />
O<br />
O O<br />
or<br />
O N<br />
O N<br />
R S<br />
O P O<br />
HN<br />
R'<br />
O<br />
O O O<br />
or<br />
R S<br />
O P O<br />
HN<br />
R'<br />
O<br />
O<br />
O N<br />
O<br />
NH<br />
O<br />
O<br />
NH<br />
O<br />
O<br />
NH<br />
O<br />
ROH Et 3N -40℃<br />
CH 2Cl 2 0.5h<br />
SCHEME 1. Synthesis of N-thiophosphoramidate derivatives<br />
1<br />
2<br />
R= CH 3 1a<br />
CH 3CH 2 1b<br />
CH 2Ph<br />
1c<br />
1d<br />
R'=H 2a<br />
CH 3 2b<br />
CH 2Ph 2c<br />
CH(CH 3) 2 2d<br />
Reference<br />
[1] F. Eckstein, Antisense Nucleic Acid Drug Dev. 2000, 10, 117 -121.<br />
[2] C. A. Brautigam, T. A. Steitz, J. Mol. Biol. 1998, 277, 363-377.<br />
[3] W. J. Stec, B. Karwowski, M. Boczkowska, P. Guga, M. Kozioøkiewicz, M. Sochacki, M.Wieczorek, J. Bøaszczyk,<br />
J. Am. Chem. Soc. 1998, 120, 7156- 7167.
P-176<br />
NEW β-FERROCENYL PHOSPHINO α-AMINOACIDS AS MODULAR<br />
ELECTROCHEMICAL BIOMARKER FOR CSF114(GLYCO)PEPTIDES<br />
A. Colson a , J. Bayardon, a E. Rémond, a F. Nuti, b R. Meunier-Prest, a M. Kubicky, a<br />
C. Darcel, a A.M. Papini b and S. Jugé* a<br />
a) Inst. Chim.Mol. de l'Université de Bourgogne,UMR CNRS 5620, 9 av. A. Savary, 21078 Dijon, France; Fax 33 3 80<br />
39 60 98; Email: Sylvain.Juge@u-bourgogne.fr<br />
b) Lab. de Chimie et Biologie de Peptides et Protéines, Université de Florence, I 50019, Italie<br />
In the recent period, organometallic probes have found considerable interest to mark all kinds of<br />
bioactive compounds, in order to improve their control by absorptiometry, immuno- or<br />
electro-chemical methods. 1 Meanwhile, several α-aminoacids bearing a metallocenyl substituent<br />
have been synthesized, mainly by a carbon-carbon bond formation strategy on the side chain. 1b<br />
We report herein a new efficient route for the diastereoselective synthesis of ferrocenyl aminoacid<br />
derivative 3, by grafting the organometallic part on the aspartic backbone 1, using a phosphine borane<br />
linker. 2<br />
HO 2C<br />
1<br />
CO 2H<br />
NH 2<br />
Fc<br />
Ph<br />
BH 3<br />
P<br />
2<br />
CO 2Bn<br />
NBoc 2<br />
53% isolated yield<br />
The interest of the phosphine borane group arises from its direct use for oxidation, sulfuration,<br />
quaternization or complexation, 3 allowing the synthesis of various kinds of ferrocenyl aminoacid<br />
derivatives, starting from 2 used as a platform. Thus, after sulfuration, the sulfide derivative is<br />
hydrolyzed into its corresponding free acid 3, useful for the peptide synthesis.<br />
In addition, the electrochemical investigation of the ferrocenyl aminoacid derivatives 2,3, and their<br />
use to mark the CSF114glc, a synthetic antigen specific of the mutiple sclerosis auto-antibodies, 4 are<br />
reported.<br />
Reference<br />
1) a) R. H. Fish, G. Jaouen Organometallics 2003, 22, 2166. b) H. Dialer, K. Polborn, W. Ponikwar, K. Sünkel, W.<br />
Beck Chem. Eur. J. 2002, 8, 691.<br />
2) For a recent work on organophosphorus amino acids synthesis, see: F. Meyer, A. Laaziri, A.M. Papini, J. Uziel, S.<br />
Jugé Tetrahedron 2004, 60, 3593.<br />
3) J. Uziel, C. Darcel, D. Moulin, C. Bauduin, S. Jugé Tetrahedron: Asymmetry 2001, 12, 1441.<br />
4) F. Lolli, B. Mulinacci, A. Carotenuto, B. Bonetti, G. Sabatino, B. Mazzanti, A.M. D'Ursi, E. Novellino, M. Pazzagli,<br />
L. Lovato, M.C. Alcaro, E. Peroni, M.C. Pozo-Carrero, F. Nuti, L. Battistini, G. Borsellino, M. Chelli, P. Rovero, A.M.<br />
Papini, Proc. Natl. Acad. Sci. USA 2005, 102, 10273.<br />
228<br />
S<br />
Fc<br />
P<br />
Ph<br />
3<br />
CO 2H<br />
NHBoc
P-183<br />
A STUDY ON THE NUCLEOSIDE ANALOGS USING ELECTROSPRAY<br />
IONIZATION MASS SPECTROMETRY<br />
Liu Ruoyu 1 , Ye Yong 1 , Cao Shuxia ,Liao Xincheng 1 , Zhao Yufen 1,2<br />
1.The Key Laboratory of Chemical Biology and Organic Chemistry of Henan Province, Department of Chemistry,<br />
Zhengzhou University, Zhengzhou 450052, China;<br />
2.The Key Laboratory for Bioorganic Phosphorus Chemistry and Chemical Biology, Ministry of Education, Department<br />
of Chemistry School of Life Sciences and Engineering, TsinghuaUniversity, Beijing 100084, China<br />
As anti-HIV prodrugs, nucleotide analogs have received considerable attention in medicinal<br />
chemistry. One of the uridin analogs was synthesized and the structure was determinded by using<br />
electrospray ionization mass spectrometry (ESI-MS) in conjunction with tandem mass<br />
spectrometry(MS/MS) in positive and negative mode. The fragmentation pathways were<br />
investigated in details. It was found that the fragmentation ions in the positive is very different from<br />
those in the negtive.<br />
m/z=283<br />
NH 2<br />
N<br />
HO<br />
O<br />
H H<br />
H H<br />
O O<br />
N<br />
O<br />
O<br />
-40<br />
NH 2<br />
N<br />
C<br />
N<br />
CH 2<br />
O<br />
m/z=152<br />
NH 2<br />
N<br />
HO<br />
O<br />
H H<br />
H H<br />
OH OH<br />
m/z=242<br />
-90<br />
NH 2<br />
N<br />
N<br />
N<br />
-132<br />
O<br />
m/z=110<br />
O<br />
229<br />
-43<br />
N<br />
N<br />
HO<br />
O<br />
H H<br />
H H<br />
OH OH<br />
N<br />
N<br />
HO<br />
O<br />
H H<br />
O<br />
m/z=181<br />
m/z=199<br />
-18<br />
-18<br />
N<br />
N<br />
HO<br />
O<br />
H H<br />
O<br />
m/z=181<br />
N<br />
N<br />
HO<br />
m/z=123<br />
References<br />
[1] Sun Xiaobin. Studies on Novel Synthesis of Antiviral Nucleoside H-Phosphonate Diester and Phosphoramidate<br />
Derivatives: [Doctor Paper]. Beijing.Chemistry Department of Tsinghua University.<br />
[2] Chen Yi. Study of the Anti-HIV Prodrugs and the Non-covalent Complexes with proteins by Electrospray Ionization<br />
Mass Spectrometry. [Doctor Paper]. Beijing.Chemistry Department of Tsinghua University.<br />
[3] Qiang Xiao,Yong Ju,Xinping Yang etc.Electrospray ionization mass spectrometry of AZT H-phosphonates<br />
conjugated with steroids. Rapid commun.Mass Spectrom.2003;17;1405-1410
P-184<br />
STUDIES ON THE NONCOVALENT BONDING BETWEEN ATP AND<br />
α-AMINOPHOSPHONIC ACIDS DERIVATIVES BY ESI-MS AND<br />
MOLECULAR MODELING<br />
Liu Xiaoxia, Fang Hua, Liu Yan, Zhao Yufen *<br />
The Key Laboratory for Chemical Biology of Fujian Province, Department of Chemistry and College of Chemistry and<br />
Chemical Engineering, Xiamen University, Xiamen 361005, P. R. China<br />
To investigate molecular recognition of ATP with proteins or structured peptide-based receptor<br />
[1,2]<br />
is very important for understanding enzymatic mechanisms and drug design .<br />
α-Aminophosphonic acids and their derivatives, as phosphorous analogs of amino acid, behaved<br />
more biological activities and attracted much attention [3] . In this work, Diisopropyl<br />
[phenyl(pyridine-4-carboxamido) -methyl]phosphonate (Figure 1a) was synthesized for<br />
investigating the interaction with ATP. The noncovalent complex was observed by the Electrospray<br />
ionization Mass Spectrometry (ESI-MS). Using the Molecular modeling [4] , it was observed that<br />
there were two intermolecular hydrogen bonds in the noncovalent complex. (Table 1) The binding<br />
energy was - 8.999kcals/mol, which was reasonable. In order to investigate the function of<br />
phosphoryl group in the interaction, benzoyl phenylglycine isopropyl ester (Figure 1b), was<br />
synthesized. Interestingly, there wasn’t interaction between ATP and compound 1b to be observed<br />
by ESI-MS. The above experiment results implied that phosphoryl group was very important for the<br />
interaction between α-Aminophosphonic acids and ATP.<br />
15 16<br />
14<br />
4<br />
3 O 1<br />
O 17<br />
1 H P 19<br />
8 7<br />
2<br />
N 13<br />
O 2<br />
1 N<br />
11<br />
12<br />
6 5<br />
9 10<br />
1 O 1<br />
4<br />
2 3<br />
a<br />
18<br />
Figure 1 The structure of (a) Diisopropyl [phenyl(pyridine-4-carboxamido)methyl]phosphonate (b)<br />
benzoyl phenylglycine isopropyl ester<br />
X---H---Y(symm code)<br />
X---Y(nm) X---H---Y(degree)<br />
(compound 1a ---ATP)<br />
N(2)-H(1)---O(12) 2.906 134.56<br />
P(1)=O(2)---H(1)-N(1) 2.877 160.68<br />
Table 1 Hydrogen Bonds geometry<br />
Reference<br />
[1] Lisong Mao,; Yanli Wang,; Yuemin Liu,; Xiche Hu, J. Am. Chem. Soc. 2003, 125:14216<br />
[2]Sara M. B.; Marcey L. W., J. Am. Chem. Soc. 2003, 125:9580<br />
[3]Fang, H.; Fang, M. J.; Liu, X. X.; Xu, P. X.; Zhao, Y. F., Chin. J. Org. Chem., 2005, 25:466<br />
[4]Sybyl 7.1; Tripos Inc.: St. Louis, MO.<br />
230<br />
O<br />
O<br />
C<br />
O<br />
CH<br />
b<br />
C<br />
NH
P-185<br />
PEPTIDE BOND FORMATION ON C-TERMINAL OF PEPTIDES IN ORGANIC<br />
SOLUTION BY INDUCEMENT OF N-PHOSPHORYL AMINO ACID<br />
Liu Xiaoxia, Liu Yan, Zhao Yufen *<br />
The Key Laboratory for Chemical Biology of Fujian Province, Department of Chemistry and College of Chemistry and<br />
Chemical Engineering, Xiamen University, Xiamen 361005, P. R. China<br />
Peptide formation is one of the most important reactions in prebiotic evolution. And<br />
N-phosphoryl-α-amino acids were proposed as model for the co-evolution of proteins and nucleic<br />
acid [1-4] . It was reported previously that the N-phosphoryl-homo, di- or tri-peptide could be<br />
formed through the self-activation reaction [5-7] . In this paper, tetrapeptide (FGGF), and<br />
heptapeptide (Ac-NH-LKKTETQ-OH) were incubated with N-phosphoalanine in pyridine solution.<br />
The resulting products were analyzed by ESI-MS/MS. It was found that peptides were prolonged by<br />
adding alanine residue both from on N-terminal and C-terminal (Table 1). Compared with the<br />
N-terminal reaction [8] , the mechanism of alanine adding on C-terminal had never reported. The<br />
possible mechanism was speculated that the five-membered ring penta-coordinate phosphoric<br />
intermediate played an important role in the reaction (Scheme 1). In order to prove the mechanism,<br />
N-protected tetrapeptide (Fmoc-NH-FGGF-COOH) was incubated with N-phosphoalanine in the<br />
same condition. Through ESI-MS/MS analysis, there was nothing more than the addition of alanine<br />
on C-terminal to be observed (Table 1).<br />
Dipp-Ala<br />
HO O<br />
O<br />
C<br />
O P<br />
CH<br />
O N<br />
CH3 H<br />
O O O O<br />
H2N CH C NH CH C NH CH C NH CH C O<br />
CH2 H H CH2 O O O O O<br />
H2N CH C NH CH C NH CH C NH CH C NH CH C OH<br />
CH2 H H CH2 CH3 FGGFA 1b<br />
231<br />
Dipp-Ala<br />
O<br />
O CH3 HO O C C NH<br />
O P<br />
O<br />
O<br />
O<br />
H<br />
FGGF NH2 O<br />
O<br />
O P NH CH C NH CH C NH CH C NH CH C NH CH C OH<br />
O CH2 H H CH2 CH3 Dipp-FGGFA 1d<br />
Scheme 1 the possible mechanism of alanine added on C-terminal of peptide<br />
Precursor ions(m/z) Main Fragments ions (m/z) (abundance, %)<br />
AFGGF<br />
FGGFA<br />
498<br />
333(63)<br />
409(93)<br />
276(15)<br />
262(14)<br />
219(7)<br />
205(4)<br />
Dipp-AFGGF<br />
Dipp-FGGFA<br />
662<br />
497(54)<br />
573(80)<br />
440(40)<br />
427(9)<br />
383(29) 236(4)<br />
Ac-LKKTETQA<br />
Ac-L(ε-A)KKTETQ<br />
960<br />
814(100)<br />
871(18)<br />
713(69)<br />
743(7)<br />
584(19)<br />
642(9)<br />
483(20)<br />
513(12)<br />
355(11)<br />
412(8) 284(5)<br />
Fmoc-FGGFA 720 631(50) 484(9)<br />
Table1 Multi-stage mass spectra of protonated Precursor ions<br />
Reference<br />
1. Zhao YF, Cao PS. Phosphorus, Sulfur Silicon. 1999; 144-146: 757.<br />
2. Zhao YF, Cao PS. Pure Appl.Chem. 1999; 71(6):1163.<br />
3. Ju Y, Zhao YF, Sha YW, Tan B. Phosphorus Sulfur and Silicon and the Related Elements. 1995; 101: 117.<br />
4. Ji GJ, Xue CB, Zeng JN, Li LP, Chai WG, Zhao YF. Synthesis-Stuttgart.1988; 6: 444.<br />
5. Hu JJ, Ju Y, Zhao YF. Chinese J. of Chem. 2000; 18 (6): 932.<br />
6. Lu K, Liu Y, Zhou N, Chen Y, Feng YP, Guo XF, Chen W, Qu LB, Zhao YF. Acta Chimica Sinica. 2002; 60 (2):<br />
372.<br />
7. Zhao YF, Ju Y, Li YM, Wang Q, Yin YW, Tan B. International J. of Peptide and Protein Research. 1995; 45 (6):<br />
514.<br />
8. Fu H, Li ZL, Zhao YF, Tu GZ. J. Am. Chem. Soc. 1999; 121 (2): 291.<br />
O<br />
O<br />
OH
P-193<br />
SYNTHESIS OF O-NUCLEOSIDE N-PHOSPHORYL AMINO<br />
ACID METHYL ESTER<br />
Chen Wei-Zhu 1,2 , Gao Yu-Xing 2 , Li Gang 2 2 *<br />
, Zhao Yu-Fen<br />
1 The Third Institute of Oceanography of The State Oceanic Administration, Xiamen 361005, P. R. China<br />
2 The Key Laboratory for Chemical Biology of Fujian Province,Department of Chemistry, College of Chemistry and<br />
Chemical Engineering, Xiamen 361005, P. R. China<br />
Recently, O-nucleoside N-phosphoryl amino acids are continuing to be an important class of<br />
rationally designed antiviral nucleoside prodrugs 1 and the model molecules in the study of the<br />
prebiotic biosynthesis of proteins 2 . Increasing interest in such compounds has provided the impetus<br />
for the development of a general synthetic method.<br />
In the present dissertation, we reported the application of Atherton-Todd reaction 3 in the<br />
synthesis of O-alkyl O-2’,3’-isopropylideneuridine N-phosphoryl amino acid methyl ester (Scheme<br />
1). Firstly, by Abuzov reaction, one-pot synthesis of hydrogen phosphonate derivatives of protected<br />
nucleoside by reacting protected nucleoside with PCl3, followed by alcoholysis with corresponding<br />
alcohols, protected nucleoside 5'-H-phosphonates derivatives were obtained in reasonable yields.<br />
By using mixture of t-butanol and menthol (1:1) as alcoholysis agents, the protected nucleoside<br />
5'-H-phosphonates derivatives were generated in satisfactory yields. Then the amino acid methyl<br />
ester 5'-phosphoramidates of nucleoside were synthesized in the presence of Et3N and CCl4 in high<br />
yields by Atherton-Todd reaction 3 . Excellent coupling yields were noted in the reaction of 3 with<br />
amino acid methyl ester of glycine, alanine, leucine, proline, methionine, histidine and<br />
phenylalanine.Their structures were confirmed by 1 H NMR, 31 P NMR, 13 C NMR and MS spectra.<br />
The present methodology was applicable to amino acid methyl esters with different side<br />
chains and with either of the nucleosid-3’ (or 5’)-yl H-phosphonates. Compared with other<br />
methodologies, this method is a fast, convenient and efficient method in mild reaction conditions.<br />
HO<br />
O<br />
O<br />
O N<br />
O<br />
HP<br />
O<br />
O<br />
NH<br />
O<br />
+ Cl P<br />
Cl<br />
Cl<br />
O N<br />
i<br />
232<br />
Cl<br />
P<br />
Cl<br />
O<br />
O<br />
O<br />
O N<br />
O O<br />
1<br />
NH<br />
2<br />
NH<br />
O<br />
3<br />
O<br />
O<br />
O<br />
O<br />
NH<br />
O<br />
ii<br />
iii<br />
iv O N<br />
O R O<br />
H<br />
H3C O C C N P O<br />
H<br />
O<br />
O O<br />
4<br />
Reagents and condition: (i) NEt3, dry CH2Cl2, 0 °C for 0.5 h, then room temperature for 3 h; (ii)<br />
dry CH2Cl2, menthol, tert-butyl alcohol, 0 °C, then room temperature for 0.5 h; (iii) NEt3 ,dry<br />
CH2Cl2, 0 °C, then room temperature for 10 min; (iv) CCl4, NEt3, H2O, CH3CN, AAOCH3, room<br />
temperature.<br />
Scheme 1 Synthetic route of O-nucleoside N-phosphoryl amino acid methyl ester<br />
References<br />
1. McGuigan, C; Cahard, D.; Sheeka, H. M.; Clercq, E. D.; Balzarrini, J. J. Med. Chem., 1996, 39, 1748-1753.<br />
2. Zhao, Y. F.; Cao P. S. J. Biol. Phys. 1994, 20, 283-287.<br />
3. Atherton, F. R.; Todd, A. R. J. Chem. Soc. 1947, 674-678.<br />
O
P-195<br />
PROTEIN PHOSPHORYLATION REGULATES PROTEIN LOCAL STRUCTURE AND<br />
FUNCTION<br />
Jia Hu, Yu-Fen Zhao, Yan-Mei Li *<br />
Key Laboratory of Bioorganic Phosphorus Chemistry and Chemical Biology (ministry of Education), Department of<br />
Chemistry, Tsinghua University, Beijing 100084, P. R. China<br />
Protein phosphorylation is one of the most important forms of protein post-translational<br />
modifications. Reversible phosphorylation is related to most physiological and pathological<br />
processes. Some of our recent results concerning how phosphorylation participates in modulating<br />
protein local structure and adjusting protein properties were summarized in this article.<br />
233
P-197<br />
A FAST WAY TO SYNTHESIS NUCLEOSIDE H-PHOSPHONATE DERIVATIVES<br />
Jian-Bin Wu 1 , Jian-Nan Guo 1 , Jun Zhang 3 , Shu-Na Luo 1 , Xiang Gao 1 , Yu-Fen Zhao* 1,2<br />
1<br />
Department of Chemistry, School of Chemistry & Chemical Engineering, Xiamen University, Xiamen, P.R.China,<br />
361005<br />
2<br />
The Key Laboratory of Bio-organic Phosphorus Chemistry, Ministry of Education, Department of Chemistry, School<br />
of Life Science & Engineering, Tsinghua University, Beijing, P.R.China, 100084<br />
3<br />
Department of Biology, School of Life Science, Xiamen University, Xiamen, P.R.China, 361005<br />
The O-alkyl-5A-H-phosphonates of d4T or AZT have been proved to cause less<br />
nucleoside-resistant mutants of HIV, lower cytotoxicity, and higher anti-HIV activity due to easier<br />
membrane permeability of these derivatives resulting from the presence of the lipophilic group. [1]<br />
Here we report a novel fast way to synthesis O-alkyl-H-phosphonate of d4T using condensation<br />
reagent 2-chloro-1,3-dimethylimidazolinium chloride (DMC). A typical process is showed in<br />
scheme 1.<br />
HO<br />
O<br />
d4T<br />
O<br />
N<br />
NH<br />
O<br />
+<br />
Table 1 ROH 1~7<br />
H 3PO 3<br />
DMC<br />
pyridine, rt<br />
scheme 1<br />
234<br />
DMC, ROH 1~7<br />
pyridine, rt<br />
1 2 3 4 5 6 7<br />
OH OH OH<br />
OH HOCH2(CH 2) 16CH 3<br />
RO<br />
O<br />
P<br />
H<br />
O<br />
O<br />
a 1~7<br />
OH OH<br />
Typical procedure: DMC(1.2eq) is dissolve in dried CH2Cl2, then is dropped to a flask containing<br />
d4T(1eq) and H3PO3(1.1eq) in newly freshed pyridine. The reaction mixture is stirred at room<br />
temperature. After 5 minutes alcohol ROH(1eq) is added to the above flask and then another 1.2eq<br />
DMC in dried CH2Cl2 is dropped to the flask at room temperature.The second step finish within<br />
10minutes. The solvent is removed in vacuum and the raw product is purified over silica gel column<br />
chromatography using CH2Cl2/MeOH(20:1) as eluent to give yields from 45%-66% according to<br />
different alcohol.<br />
References:<br />
[1] XiaoBin Sun, JianXun Kang, YuFen Zhao. One-pot synthesis of hydrogen phosphonate derivatives of d4T and AZT.<br />
Chem. Commun. 2002, 20: 2414~2415<br />
O<br />
N<br />
NH<br />
O
Symposium 5<br />
Theoretical Aspects of Phosphorus Chemistry ;<br />
31 P NMR in Biological Systems
KL-7<br />
MOLECULAR SIMULATION STUDIES OF PROTEIN KINASES<br />
Martin J. Field<br />
Laboratoire de Dynamique Moleculaire, Institut de Biologie Structurale - Jean-Pierre Ebel, 41, rue Jules Horowitz,<br />
38027 Grenoble Cedex 1, France<br />
An important goal of computational and theoretical biochemistry is helping elucidate how<br />
enzymes achieve their catalytic efficiency. The extended nature of such systems, however, makes<br />
this a challenging task for simulation techniques. Powerful approaches for the investigation of<br />
enzymatic and other condensed phase reaction processes are quantum chemical, molecular<br />
dynamical and hybrid potential techniques 1 . This talk will describe the combination of techniques<br />
employed in the author's group and illustrate their use by a discussion of their application to<br />
simulations of protein kinases. 2<br />
Reference<br />
1. Field, M. J.; Albe, M.; Bret, C.; et al. Jounal of Computational Chemistry 2000, 21(12), 1088.<br />
2. Diaz N, Field M. J., Journal of The American Chemical Society 126 (2): 529-542 JAN 21 2004<br />
235
KL-8<br />
FROM POWDER NMR TENSOR TO 3D MOLECULAR STRUCTURE,<br />
PROMISES OR ILLUSION - A 31P AND 13C CASE STUDY ON CIMITIDINE<br />
Steve C.F. Au-yeung<br />
The Chinese University of Hong Kong, P.R.China<br />
236
IL-15<br />
NMR INVESTIGATIONS OF PHOSPHATE TRANSFER ENZYMES<br />
Jonathan P. Waltho<br />
Department of Molecular Biology and Biotechnology, University of Sheffield, Sheffield S10 2TN, UK.<br />
The interpretation of a structure of beta-phosphoglucomutase (PGM) complexed with G6P as a<br />
pentacovalent trigonal bipyrimidal phosphorus intermediate[1] raised many questions as to how<br />
phosphoryl transfer is achieved in a wide variety of enzymes. Using 31P and 19F NMR<br />
spectroscopy, we have established that the trigonal-bipyramidal (TBP) species was misinterpreted<br />
and is in fact magnesium trifluoride, MgF3, rather than a phosphorane species[2]. However, the<br />
bonding in the TBP accurately portrays the transition state for phosphoryl transfer in PGM and<br />
reveals the details of protein catalysis. Using similar methods we have extended this investigation to<br />
a range of similar and dissimilar enzymes, namely phosphoserine phosphatase, phosphoglycerate<br />
kinase, and F1-ATPase.<br />
References<br />
1. Lahiri, S.D.; Zhang, G.; Dunaway-Mariano, D.; et al. Science (2003), 299, 2067-2071.<br />
2. Baxter, N.J.; Olguin, L.F., Golicnik, M.; et al. Proc. Natl. Acad. Sci. USA (2006), 103, 14732-14737.<br />
237
IL-16<br />
PHOTOPHYSICS OF DNA AND LIGHT HARVESTING SYSTEMS<br />
GuanHua Chen<br />
Department of Chemistry, The University of Hong Kong, HK, P.R.China<br />
Using the linear-scaling localized-density-matrix method, we have calculated the excited states of<br />
a single-stranded adenine bases and a light harvesting system II (LH2), and propose a unified<br />
Frenkel exciton description of these excited states.<br />
238
IL-18<br />
QM-MM COMPUTATION OF PHOSPHATE TRANSFER BY ENZYMES<br />
Charles E. Webster<br />
Department of Chemistry, The University of Memphis, Memphis, TN 38152, USA<br />
Two-layered ONIOM(B3LYP:PM3) calculations<br />
have been utilized to address the nature of the<br />
β-phosphoglucomutase (β-PGM) enzyme active site<br />
structure and shed light on the identity of the five<br />
coordinate atom, Y, and its ligation (see Scheme). The<br />
reported crystal structure of β-PGM was refined as a<br />
five-coordinate phosphorus (with five oxygen ligands),<br />
which the authors suggested was a "high-energy<br />
reaction intermediate" for phosphoryl transfer in the isomerization of β-glucose 1-phosphate to<br />
β-glucose 6-phosphate. The active site of β-PGM has a five coordinate atom (Y=P or Mg) and a<br />
pseudooctahedral Mg, coordinated by four terminal ligands (two H2O, an oxygen from ASP170,<br />
and a backbone oxygen from ASP10) and two bridging ligands (an oxygen from ASP8 and a<br />
bridging atom, Xb, to the five-coordinate species, Y). Conclusions from the current computational<br />
study include 1) the observed crystal structure is more consistent with a five-coordinate magnesium<br />
(a stable transition-state analogue), not a five-coordinate phosphorus (a phosphorane) and 2) the<br />
transfer of the phosphoryl group proceeds through a concerted fivecoordinate phosphorus transition<br />
state that is directly coupled to a proton transfer from the oxygen of bound glucose to the carboxylic<br />
group of aspartate 10. Our further work on this system will also be discussed.<br />
239
O-44<br />
1.3-DIPHOSPHACYCLOBUTANE-DIYLS AS BUILDING BLOCKS<br />
FOR EXTENDED STRUCTURES<br />
Wolfgang W. Schoeller,<br />
Department of Chemistry, University of Bielefeld,<br />
33615 Bielefeld (Germany) and Department of Chemistry,<br />
University of California at Riverside (USA)<br />
The structures 1[1] and 2[2] are isolable biradicaloids, but with different electronic properties[3].<br />
In the present contribution the effects of substituents (R´, R´´= alkyl, aryl, TMS) which determine<br />
the biradical character in 1 and 2 are discussed. Furthermore, the design of extended structures such<br />
as 3, with biradicaloid units linked over a -spacer (e.g. phenyl), is analyzed. The coupling of the<br />
unpaired electrons is studied by a combination of MCSCF and DFT procedures.<br />
R´<br />
P<br />
R´´ C<br />
C R´´<br />
C<br />
1<br />
P<br />
P<br />
C<br />
P<br />
R´<br />
240<br />
R´ R´<br />
P<br />
R´´ B<br />
B R´´<br />
π-spacer C<br />
C 3<br />
Reference<br />
[1] E. Niecke, A. Fuchs, F. Baumeister, M. Nieger, W.W. Schoeller, Angew. Chem. Intern. Ed. 1995, 34, 555. H.<br />
Sugiyama, S. Ito, M. Yoshifuji, Angew. Chem. Intern. Ed. 2003, 42, 3802.<br />
[2] D. Scheschkewitz, H. Amii, H. Gornitzka, W.W. Schoeller, D. Bourissou, G. Bertrand, Science 2002, 295, 1880.<br />
[3] W.W. Schoeller, C. Begemann, E. Niecke, D. Gudat, J. Phys. Chem. A 2001, 105, 10731. W.W. Schoeller, A.<br />
Rozhenko, D. Bourissou, G. Bertrand, Chem. Eur. J. 2003, 9, 3611.<br />
R´<br />
P<br />
P<br />
P<br />
R´<br />
2
O-45<br />
DEVELOPMENT OF A BIDENTATE LIGAND BASED ON<br />
DECAFLUORO-3-PHENYL-3-PENTANOL: STERIC EFFECT OF<br />
PENTAFLUOROETHYL GROUPS ON THE STEREOMUTATION<br />
OF OEQUATORIAL C-APICAL SPIROPHOSPHORANES<br />
Y.Yamamoto*†, X.d.Jiang†, K.I.Kakuda†, S. Matsukawa§, H.Yamamichi†<br />
† Department of Chemistry, Graduate School of Science, Hiroshima University<br />
1-3-1 Kagamiyama, Higashi-hiroshima 739-8526, Japan<br />
§ Institute for Advanced Materials Research, Hiroshima University<br />
1-3-1 Kagamiyama, Higashi-hiroshima 739-8530, Japan<br />
1,1,1,2,2,4,4,5,5,5-Decafluoro-3-phenyl-3-pentanol (1) was prepared from pentafluoro<br />
-propiophenone via the Cannizzaro-type disproportionation reaction.1 Dimetallated 1 (i.e., 2) was<br />
used as a bidentate ligand, which was bulkier than the Martin ligand (1,1,1,3,3,3-hexafluoro-<br />
2-phenyl-2-propanol). P-H spirophosphorane (3) was synthesized utilizing the new bidentate ligand.<br />
Phosphoranes which exhibit reversed apicophilicity (4: Oequatorial) were also synthesized and<br />
could be converted to the corresponding stable stereoisomers (5: O-apical). The crystal structures of<br />
O-equatorial phosphoranes (4) and those of O-apical isomers (5) were slightly affected by the steric<br />
repulsion of C2F5 groups.<br />
Kinetic measurements revealed that the stereomutation of O-equatorial methylphosphorane (4a)<br />
to the O-apical isomer (5a) was slowed. The activation enthalpy for the stereomutation of 4a→5a<br />
(24.4 kcal mol–1) was higher than that of the phosphorane bearing the Martin ligands (6a→7a: 19.3<br />
kcal mol–1) by 5.1 kcal mol–1.<br />
References<br />
[1] Jiang, X.-D.; Kakuda, K.-i.; Matsukawa, S.; Yamamichi, H.; Kojima, S.; Yamamoto, Y. Chem. Asian J. 2007, 2, in<br />
press.<br />
241
O-46<br />
CONFORMATIONAL ANALYSIS OF 1,4-HETEROPHOSPHINANES<br />
Ya.A. Vereshchagina, a, b E.A. Ishmaeva, b A.A. Gazizova, a D.V. Chachkov, a M.G. Voronkov c<br />
a Kazan State Technological University, K. Marks St., 68, Kazan, 420015, b Kazan State University, Kremlevskaya St.,<br />
18, Kazan, 420008, andc A.E. Favorsky Irkutsk Institute of Chemistry SB of RAS, Favorsky St., 1, Irkutsk, 664033,<br />
Russian Federation; e-mail: yavereshchagina@yahoo.com<br />
We carried out a conformational analysis of 1,4-heterophosphinanes 1-3 by the methods of dipole<br />
moments, Kerr effect, molecular mechanics, and quantum chemical calculations (DFT<br />
B3LYP/6-31G*).<br />
Y 1 X = S, Y = Se<br />
X P 2 X = SiMe2, Y = Se<br />
Ph<br />
3 X = SiMe2, Y = lone pair of electrons<br />
Chair conformations were the energetical preferred for compounds 1-3 according to the data of<br />
MM calculations.Experimental and calculated (vector-additive scheme) dipole moments for chair<br />
conformations of compounds 1-3 are presented below. The conformer with equatorial orientation of<br />
the phenyl substituent (chaire) was preferred for all compounds by the data of dipole moments<br />
method.<br />
Y<br />
Ph<br />
№<br />
µcalc, D<br />
µexpt, D,<br />
P<br />
P<br />
Ph<br />
Y<br />
chaira chaire dioxane<br />
X<br />
X<br />
1 4.07 4.31 4.39<br />
chaire chaira 2 4.71 5.13 5.30<br />
3 0.96 1.87 1.82<br />
Analysis of experimental and calculated Kerr constants of phosphinane 2 led to a conclusion that<br />
chair conformation of heterocycle with parallel arrangement of the Ph ring and the P=Se group was<br />
preferred in this compound.<br />
The calculations of relative energies of the possible conformers of studied compounds<br />
(B3LYP/6-31G* method) corresponded to obtained experimental data completely. The conformers<br />
with axial orientation of the P=Se bond (1, 2) or the lone pair of electrons at the phosphorus atom (3)<br />
and equatorial phenyl substituent had the energy minima (ΔE = 0 kcal . mole -1 ) for all three<br />
1,4-heterophosphinanes. The quantum chemical calculation results for phosphinanes 1-3 were in a<br />
good agreement with experimental data (dipole moments and Kerr constants in dioxane solution)<br />
and calculated dipole moments (vector-additive scheme).<br />
It was determined, that chair conformation with equatorial orientation of exocyclic phenyl<br />
substituent is preferred for 1,4-heterophosphinanes independent of the nature of second heteroatom<br />
in six-membered phosphorus heterocycle (oxygen [1], sulfur or silicon), and the coordination state<br />
of the phosphorus atom (P III or P IV ).<br />
Reference<br />
[1] Karataeva, F.Kh.; Kushnikovskaya, I.K.; Patsanovsky, I.I.; Ishmaeva, E.A. Russian J. Gen. Chem., 1991, 61 (11),<br />
2562.<br />
242
O-47<br />
STEREOSELECTIVE SYNTHESIS AND INTERCONVERSIONS OF<br />
1,9-DIAZA-3,7,11,15-TETRAPHOSPHACYCLOHEXADECANES<br />
R.N.Naumov, a * A.A.Karasik, a A.V.Kozlov, a Sh.K.Latypov, a D.B.Krivolapov, a A.B.Dobrynin, a I.A.Litvinov, a<br />
O.N.Kataeva, a P.Lönnecke, b E.Hey-Hawkins, b O.G.Sinyashin a .<br />
aA.E. Arbuzov Institute of Organic and Physical Chemistry, Russian Academy of Sciences, Arbuzov str. 8, Kazan,<br />
420088 Russian Federation. E-mail: naumov@iopc.knc.ru<br />
cInstitut für Anorganische Chemie der Universität Leipzig, Johannisallee 29, D-04103 Leipzig, Germany. E-mail:<br />
hey@rz.uni-leipzig.de<br />
The first representative of 1,9-diaza-3,7,11,15-tetraphosphacyclohexadecanes [1] has been<br />
synthesized in the course of covalent self-assembly in three-component system:<br />
bis(mesitylphosphino)propane, formaldehyde and benzylamine. The isomeric cyclic diphosphines -<br />
1,3,7-azadiphosphacyclooctanes [2] were formed when primary arylamines had been used in the<br />
condensation. However, introduction of various analogues of benzylamine (chiral<br />
α-methylbenzylamine, ortho-, meta- and para-aminomethylpiridins) into this reaction afforded a<br />
wide row of 1,9-diaza-3,7,11,15-tetraphosphacyclohexadecanes. Only one<br />
S(P)R(C)S(P)R(P)R(C)R(P)-stereoisomer of the corresponding optically active 1,9-diaza-3,7,11,15<br />
-tetraphosphacyclo-hexadecanes, containing six asymmetrical atoms, was synthesized<br />
stereoselectively from R-α-methylbenzylamines. The polydentate macrocyclic phosphino amino<br />
pyridines, which potentially can participate in co-ordination with transition metals due to four<br />
phosphorus and two additional nitrogen atoms of piridine group, were synthesized. Finally, a true<br />
racemic mixture of two rac-isomers with RRRR- and SSSS-configuration of phosphorus atoms of<br />
cage-like 1,9-diaza-3,7,11,15-tetraphosphacyclohexadecanes (Fig. 1) was obtained in<br />
tree-component reaction of bis(mesitylphosphino)propane, formaldehyde and meta-xylylenediamine.<br />
Interconversions between the stereoisomers of the 1,9-diaza-3,7,11,15-tetraphospha<br />
-cyclohexadecanes were found in the solution, demonstrating a relatively high lability of the<br />
phosphorus atom's configuration in these macrocyclic compounds in comparison with common<br />
tertiary phosphires.<br />
Acknowledgements: Financial support from Volkswagen Foundation, RFBR (No.<br />
06-03-32754-a), Russian Science Support Foundation and from President’s of RF Grant for the<br />
support of leading scientific schools (No. 5148.2006.3) is gratefully acknowledged.<br />
Reference<br />
1. R. N. Naumov, A. A. Karasik, O. G. Sinyashin et al, Dalton Trans., 2004, 357.<br />
2. A.A. Karasik, R.N. Naumov et al, Z. Anorg. Allg. Chem. 2007, in press.<br />
243<br />
Fig.1.
O-48<br />
REACTIONS OF PHOSPHONIC ACIDS WITH BASES IN AQUEOUS SOLUTIONS<br />
Myund, L. A.; Lu, N; Sidorov, Yu. V., Burkov, K. A.<br />
St. Petersburg State University, St. Petersburg, Russia<br />
The regular trends in the change of volume in the reactions of aqueous solutions of<br />
methanephosphonic, 1-aminoethanephosphosphonic, carboxymethahephosphonic, 1-hydroxyethane<br />
-1,1-diphosphonic, and nitrilotris(methanephosphonic) acids with aqueous solutions of MOH (M =<br />
Li, Na, K, Rb, Cs), tetramethyl-, tetraethylammonium and ammonium hydroxides at 25°C were<br />
revealed. The purposed explanation accounts the acid ionization, ion neutralization and hydration,<br />
presence of betaine forms, and formation of proton chelates [1, 2].<br />
Specific features of reactions of ammonia with nitrilotris(methanephosphonic) acid (H6L) in<br />
various stages of its dissociation are discussed. The revealed differences in the action of similar<br />
additions of ammonia and strong hydroxyl-containing bases on the state of H6L and its anions in<br />
aqueous solution are accounted for by specific features of ammonia as a base and of ammonium ion<br />
as a product of ammonia neutralization. Volume changes resulting from protonation of the anion of<br />
bis(tetraethylammonium) salt of H6L were determined. Protonation consts., apparent molar<br />
volumes of the acid and its ionized forms, and vol. changes on neutralization of the acid and<br />
protonation of its salt were calcd. Volume changes of protonation of 1-(aminoethyl)phosphonate<br />
anion were determined. Protonation constants, apparent molar volumes of the acid and its ionized<br />
forms, and vol. changes on neutralization of the acid and protonation of its salt were calcd. The<br />
presence of the betaine form of the acid in solns. was detected. The rule of the constancy of the<br />
sum of the vol. effects of the protonation and neutralization reactions was valid for conjugate<br />
acid-base pairs of dibasic acids.<br />
Dissocn. and alkali complex formation equil. of nitrilotris(methylenrphosphonic) acid (NTMP,<br />
H6L) have been studied by dilatometric, potentiometrc and 31P NMR-controlled titrns. Dilatometry<br />
indicated the formation of alkali complexes ML (M=Li,Na,K,Rb,Cs) at high pH with a stability<br />
decreasing from Li to Cs. An efficient combination of potentiometric and NMR methods confirmed<br />
two types of alkali metal complexes MHL and ML. Stability consts. for the equil. following<br />
M++HL5-.dblharw. MHL4- and M++L6- dblharw. ML5-, resp., were detd.:logKNaHL=1.08(0.07),<br />
logKKHL=0.86(0.08), logKNaL=2.24(0.03). The actual dissocn. consts. were found: (H2L4-.<br />
dblharw. H++HL5-) pKa5+7.47(0.03) and (HL5- dblharw. H++L6-) pKa6=14.1(0.1). The<br />
anisotropy of 31P chem. shifts of salts MnH6-nL (M=Li, Na, n=0-5) is more sensitive towards titrn.<br />
(n) than isotropic soln. state chem. shifts.<br />
References<br />
1. Grossmann, G.; Burkov, K. A.; Hagele, G.; Myund, L. A.; Hermens, S.; Verwey, C.; Arat-ool, Sh. M. Inorg. Chim.<br />
Acta 2004, 357, 797.<br />
2. Myund, L. A.; Latysheva, V. A.; Arat-Ool, Sh. M.; Hagele, G.; Burkov, K. A. Russ. J. Gen. Chem. 2001, 71, 1384.<br />
244
O-49<br />
DISTINCT π BONDING CAPABILITY BETWEEN<br />
PHOSPHINIDENE AND PHOSPHONIUM ION<br />
Hisn-Mei Cheng and San-Yan Chu<br />
Department of Chemistry, National Tsing Hua University, Hsinchu 30013, Taiwan<br />
Although both phosphinidiene (RP) and phosphonium ion (R2P + ) are isoelectronic to silylenes,<br />
theπbonding tendency of the former is rather strong that it forms planar adduct with both the stable<br />
carbene and stable silylene((HCNH)2E,E=C and Si, denoted A and B, repectively). In contrast, the<br />
latter forms trans-bent adducts with the two species. Therefore, the phosphinidene and<br />
phosphonium ion are actually analogous to the carbene and silylene, respectively, in the pi bonding<br />
capability. These results can be interpreted in terms of CGMT model and the fact that the value of<br />
singlet-triplet energy gap of HP fragment increases significantly after the protonation(47.9kcal/mol).<br />
The former has two open-shell p orbitals, ready to form stable double bond. The latter has a stable<br />
lone pair, thus a significant promotion is required for the double bond formation. Listed below are<br />
the computation results of CH2, SiH2, PH and PH2 + (X) bonding with stable carbene (A) and stable<br />
silylene (B) to form doubly bonded compounds A=X and B=X with B3LYP/6-311G** method.<br />
Finally, nitrene (NH) and nitrenium (NH2 + ) haveΔEST of -49.58 and -32.70 kcal/mol respectively.<br />
Therefore both are analogous to carbene in π bonding capability, unlike the conspicuous distinction<br />
between HP and H2P + .<br />
A=X RAX(A o ) angle a ΔEST(X) b<br />
A=CH2 1.352 1.57 -12.17<br />
A=SiH2 1.926 84.99 20.16<br />
A=PH 1.698 0.00 -32.07<br />
A=PH2 + 1.858 83.41 15.90<br />
245<br />
B=X RBX(A o ) angle ΔEST(X)<br />
B=CH2 1.698 0.11 -12.15<br />
B=SiH2 2.219 59.19 20.16<br />
B=PH 2.098 0.00 -32.07<br />
B=PH2 + 2.196 84.49 15.90<br />
a.bending angle of X from planar geometry b.E(triplet)-E(singlet) for X in kcal/mol
O-50<br />
DIMERIZATION AND TRIMERIZATION OF PHOSPHAACETYLENE.<br />
A MECHANISTIC STUDY<br />
T. Veszprémi, T. Höltzl, and M.T. Nguyen<br />
a<br />
Department of Inorganic Chemistry, Budapest University of Technology and Economics,<br />
Gellért tér 4, H-1521 Budapest, Hungary. Email: Tveszpremi@mail.bme.hu<br />
b<br />
Department of Chemistry, University of Leuven, Celestijnenlaan 200F, B-3001 Leuven, Belgium.<br />
Email: minh.nguyen@chem.kuleuven.ac.be<br />
Keywords: Reaction mechanism, Di- and Tri-merization, Phosphaacetylene<br />
Phosphaalkynes play an important role in the low-coordinated phosphorus chemistry. To<br />
understand the oligomerization of phospha-alkynes, and predict new potential targets and reaction<br />
conditions for synthesis, we studied the C2P2H2 potential surface and all the possible dimerization<br />
reaction channels using high-level ab initio (CCSD(T), CBS-QB3, CASSCF, CASPT2, MR-ACPF,<br />
MR-ACPF-2) and Density Functional Theory (B3LYP).<br />
Seventeen low energy closed-shell and five open shell phosphaacetylene dimers could be found<br />
on the potential energy surface. Two head-to-head, one head-to-tail and three other dimerization<br />
reaction paths were found, all with high activation barriers, suggesting that closed-shell minima are<br />
usually kinetically stable. An open-shell head-to-head reaction path has also been found with<br />
moderate initial barrier (95.0 kJ/mol) leading to 1,2- and 1,3-diphosphacyclobutadiene, suggesting<br />
that polymerization of HCP and oligomerization of its derivatives have open-shell mechanism.<br />
Formation of 1,2-diphosphacyclobutadiene is both thermodynamically and kinetically favored over<br />
1,3-diphosphacyclobutadiene. A head-to-head reaction involving LiBr as a catalyst was also studied.<br />
It has been pointed out that LiBr catalyse the closed-shell mechanism. All the four possible reaction<br />
channels of this reaction yield 1,4-diphosphatriafulvene with a fairly low activation Gibbs-free<br />
energy (44.8 kJ/mol), suggesting that this compound could be synthesized. This finding fully<br />
supports the experimental findings.<br />
246
O-52<br />
BOND ACTIVATION PROCESSES IN N-HETEROCYCLIC PHOSPHINES<br />
D.Gudat, S.Burck, I.Hajdók, F.Lissner, M.Nieger<br />
Institut f. Anorganische Chemie, Univ. Stuttgart, Pfaffenwaldring 55, 70569 Stuttgart,Germany<br />
N-heterocyclic phosphines I (NHP) with exocyclic hydrogen or phosphinyl substituents display a<br />
unique weakening of the exocyclic P–H or P–P bonds, respectively, which can be rationalized in<br />
terms of a bond/no-bond resonance (hyperconjugation) between the canonical structures Ia and Ib<br />
with an unusually large contribution by the ionic structure Ib.1,2 We present new results<br />
demonstrating that this effect can be enhanced to the extent of complete ionization of a P–P bond,<br />
giving rise to isolable ionic phosphenium-phosphides (Ib, X = PR2). The unusual molecular<br />
structures and bonding situation in these compounds will be discussed in some detail. Reports on<br />
the study of the chemical reactivity of P-phosphinyl substituted NHPs will focus on novel<br />
stereoselective additions to multiple bonds, and on the exploration of the use of NHPs as<br />
organocatalysts for phosphorus-carbon cross coupling reactions.3<br />
The concept of exocyclic bond activation will be extended to NHPs with purely organic<br />
substituents, and first examples of reactions under specific activation of phosphorus-carbonbonds<br />
will be communicated.<br />
As a complement to reactions involving activation of exocyclic P-X bonds in NHPs we will<br />
further present experimental evidence showing that selected substituents X allow to tune the<br />
hyperconjugation interactions in the heterocyclic to induce a weakening of an endocyclic P–N bond,<br />
thus paving the way to novel ring fragmentation reactions.<br />
References:<br />
[1] S. Burck, D. Gudat, M. Nieger, Angew. Chem., Int. Ed. 2004, 43, 4801.<br />
[2] S. Burck, D. Gudat, M. Nieger, W.W. du Mont, J. Am. Chem. Soc. 2006, 128, 3946.<br />
[3] S. Burck, D. Förster, D. Gudat, Chem. Commun. 2006, 2810.<br />
247
O-53<br />
DETERMINATION OF OPTICAL PURITY OF AMINOPHOSPHONATES<br />
BY MEANS OF NMR SPECTROSCOP<br />
E.Rudzińska<br />
Laboratory of Structural Analysis, Faculty of Chemistry, Wrocław University of Technology, WybrzeŜe<br />
Wyspiańskiego 27, 50-370 Wrocław, Poland<br />
Aminophosphonic and aminophosphinic acids constitute a class of mimetics of amino acids in<br />
which a carboxylic group is replaced by phosphonic or related functionality. Acting as antagonists<br />
of amino acids, they inhibit enzymes involved in amino acid metabolism and thus affect a variety of<br />
physiological processes. Therefore, they may be used in a wide range of human activity ranging<br />
from agriculture to medicine. These compounds have already been found to act as antibacterial<br />
agents, neuroactive compounds, anticancer drugs and pesticides. Moreover, N-protected derivatives<br />
of aminophosphonates represent essential substrates for the synthesis of phosphorus containing<br />
peptidomimetics. The resulting peptide isosteres contain moieties mimicking the high-energy<br />
tetrahedral transition state of amide bond hydrolysis. Due to this feature, they constitute a class of<br />
effective inhibitors of proteases, exhibiting particular potency towards metallo-dependent enzymes.<br />
It is well recognized that the biological activity of organic compounds is strongly dependent on<br />
their stereochemistry. Thus, a simple and versatile method for determination of optical purity of<br />
these compounds is strongly desirable. Here, we summarize the application of 31P NMR<br />
spectroscopy as a fast, versatile and reliable technique for enantiodiscrimination of a wide group of<br />
aminophosphonic, aminophosphinic acids, their N-benzyloxycarbonyl derivatives as well as<br />
phosphonate ethyl and phenyl monoesters. Different commercially available cyclodextrins and<br />
O-tertbutylcarbamoylquinine and quinidine were successfully applied as chemical shift reagents.<br />
Employing two-dimensional NMR techniques selected ligand-receptor complexes were studied<br />
in some details. Molecular modelling studies of the interaction within the supramolecular structures<br />
were performed as well.<br />
248
O-54<br />
PHOSPHORUS STABILZES AND CAN BE STABILIZED<br />
László Nyulászi<br />
Department of Inorganic Chemistry Budapest University of Technology and Economics<br />
H-1521 Budapest Szt Gellért tér 4, Hungary<br />
nyulaszi@mail.bme.hu<br />
The covalent bonds in the chemistry of phosphorus-carbon compounds exhibit a great diversity,<br />
including single, double, triple bonds with or without the expansion of the valence shell. In the<br />
present contribution some examples will be presented where these well known bonding structures<br />
are perturbed by substituents, and as a result the stability of unusual compounds can be predicted.<br />
To quantitize the effects we use a computational approach, calculating isodesmic reactions. Both<br />
the thermodynamics and the kinetics of possible dimerization and oligomerization reaction will be<br />
investigated by calculating the energies and barriers of these processes. The computed results are<br />
compared to the available experimental observations.<br />
It will be discussed in detail, which substituents stabilize phosphorus effectively in<br />
phosphinidenes.1 Also the stabilizing effect of a pair of phosphorus lone pairs will be discussed in<br />
case of carbocations2 and carbenes, in relation with the inversion barrier at the tricoordinate<br />
phosphorus. Further stabilizing and destabilizing effects will be discussed in case of phosphole.3<br />
Reference<br />
1. Z. Benkő, R. Streubel, L. Nyulászi Dalton Transactions 2006, 4321.<br />
2. M. Sebastian, A. Hoskin, M. Nieger, L. Nyulászi, E. Niecke Angew. Chem. 2005, 44, 1405.<br />
3. L. Nyulászi, O. Hollóczki, C. Lescop, M. Hissler, R. Reau Org. Biomol. Chem. 2006, 4, 996.<br />
249
O-94<br />
MECHANISM OF AMINO ACIDS MEDIATED OLIGOMERIZATION INTO PEPTIDES<br />
BY PHOSPHORUS TRICHLORIDE<br />
W.J.Zhao 1 D.X.Zhao 1 K.Lu 1*<br />
1.School of Chemistry and Chemical Engineering, Henan University of Technology, Zhengzhou 450052, China;<br />
2.Department of Chemistry, Xiamen University, Xiamen 361005, China<br />
N-phosphoryl a-amino acids and N,O-bis(trimethylsilyl)-a-amino acids could self-activated to<br />
give peptides and the reaction mechanism undergo penta-coordinate phosphorus intermediate of<br />
amino acid[1]. In our previous work with the assistance of inorganic phosphorus amino acids also<br />
could be assembled into oligopeptides[2,3]. In this paper, the reaction mechanism was studied by<br />
using 31P NMR and electrospray ionization mass spectrometry(ESI-MS/MS). Based on the results<br />
obtainted by 31 P NMR and ESI-MS/MS, a detailed reaction mechanism of peptidesformation from<br />
amino acid mediated by phosphorus trichloride was proposed. Aminoacyl-phosphorus trichloride<br />
mixed anhydride and N-phosphoryl a-amino acids were produced by amino acids reacting with<br />
phosphorus trichloride. A penta-coordinated phosphorus intermediated was formed via an<br />
aminoacyl-phosphorus trichloride mixed anhydride or N-phosphoryl a-amino acids. The carbonyl<br />
group of the penta-coordinated phosphorus intermediated was activated and then was attacked by an<br />
amino acid to yield N-phosphoryl dipeptide and loss one hydroxyl phosphorus oxychloride<br />
molecule. If dipeptide reacts with the penta-coordinated phosphorus intermediated tripeptide will<br />
produced following the same way. The formation of longer peptides may be deduced by analogy.<br />
However, the penta-coordinated phosphorus intermediated is un stable and only exists as<br />
instantaneous intermediated. There is no signal of penta-coordinated phosphorus intermediated<br />
appeared in the stack 31P NMR spectra. But the progress of N,O-bis(trimethylsilyl)-a-amino acids<br />
reacting with phosphorus trichloride in dichloridemethane was monitored and the signal of<br />
penta-coordinated phosphorus intermediated appeared in 31P NMR spectroscopy.<br />
References<br />
[1] Y. Ju, Y. F. Zhao, Y. W. Sha, et al, Phosphorus, Sulfur and Silicon. 1995,101(1-4): 117<br />
[2] H. Li, W. J. Zhao, S. X. Cao, et al. Chem. J. Chinese Universities, 2004, 25, 1866.<br />
250
P-103<br />
MECHANISM OF AMINO ACIDS MEDIATED OLIGOMERIZATION INTO PEPTIDES<br />
BY PHOSPHORUS TRICHLORIDE<br />
Wenjie Zhao, Dongxin Zhao, Kui Lu*<br />
School of Chemistry and Chemical Engineering, Henan University of Technology, Zhengzhou 450052, China<br />
N-phosphoryl-amino acids and N,O-bis(trimethylsilyl)- -amino acids could self-activated to<br />
give peptides and the reaction mechanism undergo penta-coordinate phosphorus intermediate of<br />
amino acid [1]. In our previous work with the assistance of inorganic phosphorus amino acids also<br />
could be assembled into oligopeptides [2,3] . The reaction mechanism was studied by using 31 P NMR<br />
and electrospray ionization mass spectrometry (ESI-MS/MS).<br />
Based on the results obtainted by 31 P NMR and ESI-MS/MS, a detailed reaction mechanism of<br />
peptides formation from amino acid mediated by phosphorus trichloride was proposed.<br />
Aminoacyl-phosphorus trichloride mixed anhydride and N-phosphoryl -amino acids were<br />
produced by amino acids reacting with phosphorus trichloride. A penta-coordinated phosphorus<br />
intermediated was formed via an aminoacyl-phosphorus trichloride mixed anhydride or<br />
N-phosphoryl -amino acids. The carbonyl group of the penta-coordinated phosphorus<br />
intermediated was activated and then was attacked by an amino acid to yield N-phosphoryl<br />
dipeptide and loss one hydroxyl phosphorus oxychloride molecule. If dipeptide reacts with the<br />
penta-coordinated phosphorus intermediated tripeptide will produced following the same way. The<br />
formation of longer peptides may be deduced by analogy. However, the penta-coordinated<br />
phosphorus intermediated is unstable and only exists as instantaneous intermediated. There is no<br />
signal of penta-coordinated phosphorus intermediated appeared in the stack 31 P NMR spectra. But<br />
the progress of N,O-bis(trimethylsilyl)- -amino acids reacting with phosphorus trichloride in<br />
dichloridemethane was monitored and the signal of penta-coordinated phosphorus intermediated<br />
appeared in 31 P NMR spectroscopy.<br />
Acknowledgements: The authors would like to thank the financial supports from the Chinese<br />
National Science Foundation (No.20272055, 20572016), Henan Province Science Foundation for<br />
Prominent Youth (No.0312000900) and Office of Education of Henan Province (No.<br />
2006KYCX017).<br />
References:<br />
1. Y. Ju, Y. F. Zhao, Y. W. Sha, et al, Phosphorus, Sulfur and Silicon. 1995,101(1-4): 117-123<br />
2. H. Li, W. J. Zhao, S. X. Cao, et al. Chem. J. Chinese Universities, 2004, 25, 1866.<br />
3. Zhou N.; Lu K.; Liu Y. et al. Rapid Commun. Mass Spectrom. 2002,16,919.<br />
251
P-137<br />
CAN FOUR MEMBERED HETEROPHOSPHETE STRUCTURES EXIST?<br />
“HETEROGEN” HETERO ANTIAROMATICITY AS A DESTABILIZING EFFECT<br />
Zoltán Mucsi, 1 Tamás Körtvélyesi, 2 Tibor Novák 3 , György Keglevich 1<br />
1 Department of Organic Chemical Technology, Budapest University of Technology and Economics<br />
H-1521 Budapest, Hungary<br />
2<br />
Department of Physical Chemistry, University of Szeged, H-6701 Szeged, Hungary<br />
3<br />
Research Group of the Hungarian Academy of Sciences at the Department of Organic Chemical Technology, BUTE,<br />
H-1521 Budapest, Hungary<br />
Four-membered heterophosphetes (Figure 1), existing as two conformers (1A and 1B) are<br />
thermodynamically unstable and they readily undergo ring-opening reactions to form oxo-, imino-<br />
or thiaphosphoranes 3 [1]. This may be one of the reasons that earlier synthetic attempts to produce<br />
heterophosphetes have mostly failed. Their saturated counterparts heterophosphetanes (2A and 2B),<br />
which are well-known intermediates of the Wittig reaction are, however, stable and cannot undergo<br />
ring-opening reaction. The question arises, what the reason for this sharp difference is between the<br />
stability of 1 and 2.<br />
Our results based on quantum chemical calculations revealed, that the instability of 1A and 1B<br />
should be attributed to their antiaromatic character, originated form the conjugation of the empty<br />
d-orbitals of the P atom and the occupied pz orbital of the Y moiety. This type of antiaromaticity is<br />
defined as a “heterogenic” antiaromaticity. Compounds 1A with equatorial Y possess a more<br />
considerable extent of antiaromatic character, than species 1B with axial Y, which practically can<br />
be considered as non-aromatic compounds. It has been shown, that strong electron withdrawing<br />
substituents (F, Cl, CN) bound to the phosphorus atom are able to stabilize the ring system. The<br />
thermodynamic stability of 1A and 1B has been studied systematically and the extent of<br />
antiaromaticity of these species was quantified by a linear aromatic and antiaromatic scale (Figure<br />
2). An overall 3D potential surface, as well as an antiaromaticity % surface of 1 have been<br />
discovered.<br />
X<br />
Y P<br />
X<br />
X<br />
1A<br />
1B<br />
Equatorial Y Apical Y<br />
X<br />
Y P<br />
2A<br />
X<br />
X<br />
X X<br />
X X<br />
Y P X Y P X<br />
XX<br />
X X<br />
Y P X Y P X<br />
X = F, Cl, CN<br />
Y = O, NH, S<br />
Figure 1. Transformations of heterophosphetes (1A<br />
and 1B) and heterophosphetanes (2A and 2B)<br />
2B<br />
3<br />
4<br />
1B<br />
1A<br />
252<br />
NH,F<br />
NH,Cl<br />
NH,CN<br />
O,F<br />
O,Cl<br />
O,CN<br />
S,F<br />
S,Cl<br />
S,CN<br />
NH,Cl<br />
S,F<br />
O,F<br />
non-aromatic<br />
character<br />
S,Cl<br />
O,Cl<br />
O,CN<br />
S,CN<br />
-40 -35 -30 -25 -20 -15 -10 -5 0 5 10 15<br />
antiaromaticity % aromaticity %<br />
Reference<br />
[1] Gy. Keglevich, H. Forintos, T. Körtvélyesi, Current Org. Chem. 8, 1245 (2004).<br />
NH,F<br />
Figure 2. Computed aromaticity and antiaromaticity<br />
scale for 1A and 1B<br />
NH,CN
P-155<br />
SYNTHESIS AND MECHANISM STUDIES ON AMIDE BOND BY<br />
HEXAMETHYLPHOSPHORAMIDE(HMPA)<br />
Jianbo Hou 1 , Tongjian Wang 1 , Kan Lin 1 , Guo Tang 1 , Yufen Zhao 1,2<br />
1 Department of Chemistry, The Key Laboratory for Chemical Biology of Fujian Province, College of Chemistry and<br />
Chemical Engineering, Xiamen University, Xiamen 361005, P. R. China; 2 The Key Laboratory of Bioorganic<br />
Phosphorus Chemistry, Department of Chemistry, School of Life Science and Engineering, Tsinghua University,<br />
Beijing 100084, P. R. China<br />
Recently, organic phosphorous coupling reagents (eg. triphenylphosphine) have been applied<br />
for the synthesis of peptide derivatives [1-3]. In this paper HMPA was used as amide bond coupling<br />
reagent, and the mechanism was studied.<br />
Triphosgene was dissolved in solvent and was added dropwise to a mixed solution of<br />
carboxylic acid and HMPA at 0 ℃, the phosphinic carboxylic mixed anhydride was formed. And<br />
then the above solution was added dropwise to the amine solvent at 0 ℃. The amide bond was<br />
formed. After extraction, HMPA could be recycled.<br />
The reaction was traced by 31 P NMR(Figure 1).<br />
O<br />
P<br />
N N N<br />
+ R<br />
Cl<br />
1COOH O<br />
C<br />
a b<br />
R1 =-CH3 ,-C6H5 Cl<br />
Cl<br />
O<br />
C O<br />
P Cl<br />
N N<br />
N<br />
Scheme 1.<br />
253<br />
O<br />
R<br />
O<br />
2NH2 P<br />
R2NH C + N N + HCl<br />
N<br />
R 1<br />
R 2 =-CH 2 C 6 H 5 ,-C 6 H 5 ,-CH 2 CH 2 CH 2 CH 3<br />
Figure 1: The Stack 31 P NMR Spectra of Synthesis amide bond<br />
a:Hexamethylphosphoramide; b:phosphinic carboxylic mixed anhydride;<br />
c:Hexamethylphosphoramide (recycled) .<br />
Project was supported by NNSFC (No. 200572061)<br />
References<br />
[1] Appel R.,Roland M., Chem. Ber., 1977, 110, 2385.<br />
[2] Appel R., Heinfried S., Chem. Ber., 1977, 110, 2382.<br />
[3] Tang G., Zhou G. J., Zhao Y.F., Chin. Chem. Lett., 2005, 16(3), 385-388.<br />
b<br />
a<br />
c<br />
RNH 2 in Solvent was Dropwised<br />
C 3Cl 6O 3 in Solvent was Dropwised<br />
Solvent and HMPA and RCOOH<br />
c
P-163<br />
INTERACTION OF 2H-1,2,3-DIAZAPHOSPHOLE WITH DIOLS<br />
*M.A.Khusainov, R.A.Cherkasov, N.G.Khusainova, , O.A.Mostovaya, *I.F.Gataulina<br />
Kazan State University, Kremlevskaya str.18, Kazan, 420008,Russia;<br />
*Kazan State Technological University, K.Marks str.68, Kazan, 420015, Russia<br />
e-mail:narkis.khusainova@ksu.ru<br />
The heterocyclic derivatives of two-coordinated phosphorus containing σ2 λ3 –P=C bond<br />
interaction with diols has been studied.. We have found (by kinetic 31P NMR spectroscopy) that the<br />
reaction of 5-methyl-2-phenyl-2H-1,2,3- diazaphosphole 1 with catechol 2 furnishes a mixture of<br />
tautomeric diazaphospholene 3 and hidrospirophosphorane 4. At increasing temperature fill<br />
room temperature the 3 and 4 adducts undergo fragmentation into phenylhydrazone acetone 5,<br />
symmetric hydrospirophosphorane 6 and phosphite 7 .<br />
Ph<br />
N<br />
P N<br />
+<br />
H<br />
N<br />
Ph N<br />
OH<br />
OH<br />
N<br />
N<br />
Ph<br />
P<br />
O<br />
O O<br />
P<br />
O O<br />
H<br />
6<br />
254<br />
OH<br />
N<br />
Ph<br />
N<br />
P H<br />
O O<br />
1 2<br />
3<br />
4<br />
5<br />
+<br />
Reaction of 2-acetyl-5-metyl-2H-1,2,3-diazaphosphole with (rac)butane-2,3-diol at temperature<br />
below 0oC leads to formation of asymmetrical compounds: hydrospirophosphorane containing<br />
both diazaphospholene and dioxaphospholane ring system and 1,2,3-diazaphospholene. Then its<br />
interconversion results in fragmentation of the diazaphospholene ring in these compounds with the<br />
formation of the symmetrical hydrospirotetraoxaphosphorane, β-hydroxyphosphite, hydrazone and<br />
symmetrical bisphosphite as the main products [1]. Termodynamical stability of all these reaction<br />
members was analysed by calculation using methods of quantum chemistry (PM3 and<br />
HF/6-31G(d,p) methods) for the first time. Instability of the hydrospirophosphorane and the<br />
1,2,3-diazaphospholene is confirmed by quantum chemical calculations. On the basis of<br />
thermodynamical characteristics initialy formed products are less expedient in comparison with<br />
symmetrical hydrospirotetraoxaphosphorane, its tautomer and symmetrical bisphosphite.<br />
Calculations confirm that tautomeric equilibrium in tri- and penta-coordinated phosphorus is shifted<br />
towards the hydrospirophosphorane. Response mechanism as nucleophilic 1,2-addition of diol to<br />
P=C bond was inferred from preliminary calculation and analysis of charge density in atoms of<br />
reactive center. Oxiorganical group attacks atom of two-coordinated phosphorus regioselectively<br />
with increasing in phosphorus coordination.<br />
+<br />
O<br />
P O<br />
O<br />
Rererence<br />
1. Khusainova N.G., Mostovaya O.A., Azancheev N.M., et.al., Mend. Comm. 2004, N5, P. 2<br />
7
P-169<br />
LOCATING THE REACTION PATHS OF N-(DIALKYLOXYPHOSPHORYL) AMINO<br />
ACIDS BY NUDGED ELASTIC BAND(NEB) METHOD<br />
NI, F.; Zeng, Z. P.; Zhao, Y. F *<br />
Key Lab of Chemical Biology of Fujian Province, Department of Chemistry, Xiamen University, Xiamen, 361005,<br />
China<br />
N-(dialkyloxyphosphoryl)amino acids(NPAAs) are active compounds which can undergo many<br />
important reactions such as peptide formation, esterification, phosphoryl group transfer, hydrolysis<br />
et al. in mild water/alcohol solution 1 . NPAAs with different amino acid side chains show different<br />
reactivity remarkably and it was testified that a penta-coordinated intermediate plays an important<br />
role during above reactions 2 . Hence, theoretical examination of reaction paths between NPAAs and<br />
their intermediates are of great interest. An efficient and successful method for obtaining the<br />
reaction paths is one known as “nudged elastic band” (NEB) 3 . In this work, 9<br />
N-(dimethyloxyphosphoryl) amino acids (A,F,G,I,L,V,W, Y,M) models were studied by NEB<br />
method implemented in Dynamo 4 with AM1,PM3,MNDO and PDDG 5 respectively and the results<br />
were compared with those by Berny method implemented in Gaussian03 6 with DET at<br />
6-31G(d,p)level.<br />
The calculation shows that (i) NEB method(with AM1 or MNDO ) gave good energy profiles<br />
along the reaction paths between NPAAs and their intermediates.(see Figure) (ii)Transition state<br />
structures alone the reaction paths found by NEB method with AM1 are well close to those found<br />
by Berny method implemented in Gaussian03 with DET at 6-31G(d,p) level.<br />
Energy<br />
(kJ/mol)<br />
MeO<br />
MeO<br />
O<br />
P<br />
MeO<br />
MeO<br />
O<br />
P<br />
H<br />
N CH C<br />
NPPA<br />
H<br />
TS<br />
R<br />
O<br />
H<br />
N<br />
O<br />
H<br />
O<br />
R<br />
OH<br />
255<br />
HO<br />
MeO<br />
Reaction coordinate (Ǻ)<br />
O<br />
P<br />
OMe<br />
O<br />
N<br />
H<br />
H<br />
R<br />
Intermediate<br />
Figure Reaction paths between NPAAs and their penta-coordinated intermediates located<br />
by NEB method with AM1 ( Data of F,I,W not show here, DMP:<br />
dimethyloxyphosphoryl group, Y,V, M, L, G, A, F, I, W: single letter abbreviation
Reference<br />
1. Cheng, C. M.; Liu, X. H.; Li, Y. M.; Ma, Y.; et al.Origins of Life and Evolution of the Biosphere 2004, 34 (5), 455<br />
2. Fu, H. ; Li, Z. L. ; Zhao,Y. F. ; et al. Journal of The American Chemical Society 1999, 121 (2), 291<br />
3. Jónsson,H.; Mills, G.; Jacobsen, K.W.; in Classical and Quantum Dynamics in Condensed Phase Simulations, ed.<br />
Berne, B.J.; Ciccotti, G.; Coker, D.F. World Scientific, 1998<br />
4. Field, M. J.; Albe, M.; Bret, C.; et al. Jounal of Computational Chemistry 2000, 21(12), 1088.<br />
5. Repasky, M. P.; Chandrasekhar, J; Jorgensen; W. L. Jounal of Computational Chemistry 2002, 23(16), 1601<br />
6. Gaussian 03, Revision C.02 Frisch, M. J.; Trucks, G. W.; Schlegel, H. B.et al, Gaussian, Inc., Wallingford CT,<br />
2004.<br />
256
P-194<br />
THE FORMATION MECHANISM OF THE α-HYDROXYPHOSPHONATE: A<br />
THEORETICAL STUDY<br />
Zeng Zhiping Fang Hua Zhao Yufen*<br />
The Key Laboratory for Chemical Biology of Fujian Province, Department of Chemistry, Xiamen University, Xiamen<br />
361005, China. E-mail: yfzhao@xmu.edu.cn<br />
α-hydroxyphosphonate, showing definite bioactivities, are a useful intermediate for many<br />
organophosphorus derivative. But its formation mechanism is unknown until now. In our lab, we<br />
have synthesize a lot of α-hydroxyphosphonates and they are all meso, so how to control the charity<br />
of the α-hydroxyphosphonate is very crucial. The mechanism may answer this question for us, and a<br />
detail study is carrying out.<br />
A simple theoretical model of our reaction is shown below.(study reaction).and one of the<br />
DFT method (b3lyp) is applied to capture the transition state. All the calculation is based on<br />
6-311g* basis set .<br />
O<br />
O<br />
1.654<br />
study reaction:<br />
O<br />
P<br />
HO H OH<br />
1.654<br />
P<br />
O<br />
1.615<br />
O<br />
O P 1.463<br />
1.615<br />
1.410<br />
0.970<br />
1.644<br />
O<br />
BASE<br />
BASE<br />
E(kcal.mol-1 Δ<br />
)<br />
117.2<br />
reactant<br />
OH<br />
P<br />
HO OH<br />
10.21<br />
0.4<br />
4TS<br />
5TS<br />
257<br />
O<br />
C<br />
H H<br />
four-ring TS<br />
139.9<br />
fast<br />
32.32<br />
product<br />
1.637<br />
unfavorable<br />
five-ring TS<br />
favorable<br />
O OH<br />
HO P C H<br />
OHH<br />
O<br />
O<br />
2.072<br />
C<br />
P<br />
O<br />
O<br />
1.631<br />
O<br />
1.606<br />
1.016<br />
P<br />
2.082<br />
1.518<br />
1.557<br />
1.345<br />
O<br />
1.569<br />
O<br />
1.450<br />
1.445<br />
O<br />
C<br />
1.298<br />
TS<br />
O<br />
1.624<br />
O<br />
1.610<br />
P<br />
1.482<br />
1.827<br />
1.087<br />
C 1.416<br />
O<br />
1.097 0.966<br />
O<br />
O<br />
H O<br />
P H<br />
H<br />
H<br />
O<br />
C O<br />
H<br />
O<br />
H<br />
O<br />
H<br />
H<br />
H<br />
OH<br />
HO<br />
H<br />
H<br />
P O<br />
H<br />
C O<br />
P<br />
O<br />
C OH<br />
The QM study result shows that: the reaction pathway may encounter an interconversion from<br />
four-coordinate to three-coordinate phosphorus. And then a five-ring transition state is formed to<br />
reduce the activative reaction energy greatly(100kcal.mol-1). Also, the experiment will be designed<br />
to check our suppose later on.<br />
Reference<br />
[1]. M. J. Frisch, G. W. Trucks, H. B. Schlegel, G. E. Scuseria,M. A. Robb, J. R. Cheeseman, J. A. Montgomery, Jr., T.<br />
Vreven, Gaussian, Inc., Wallingford CT, 2004.
P-182<br />
31 P NMR ASSAY OF THE ENANTIOMERIC EXCESS BY USING QUININE AS CHIRAL<br />
SOLVATING AGENT<br />
Liu Ruoyu 1 , Ye Yong 1 , Chen Xiaolan , Liao Xincheng 1 , Zhao Yufen 1,2<br />
(1.The Key Laboratory of Chemical Biology and Organic Chemistry of Henan Province, Department of Chemistry,<br />
Zhengzhou University, Zhengzhou 450052, China;<br />
2.The Key Laboratory for Bioorganic Phosphorus Chemistry and Chemical Biology, Ministry of Education, Department<br />
of Chemistry School of Life Sciences and Engineering, TsinghuaUniversity, Beijing 100084, China)<br />
Phosphonates and phosphonic acids have become increasingly important due to their diverse<br />
and useful biological properties with possible applications ranging from medicine to agriculture.<br />
But the lack of simple and accurate methods for the determination of enantiomeric excess is<br />
currently the main problem in designing stereocontrolled syntheses for such as compounds.We<br />
recently are engaged in exploring methods for the asymmetric synthesis of some phosphonates and<br />
establishing a reliable method for the determination of enantiomeric purity , enantiomeric excess<br />
and absolute configuration.<br />
31 P NMR spectroscopy is a very convenient tool for determination of the enantiomeric excess of<br />
organophosphorus compounds because of the large chemical dispersion and the simplicity of the<br />
broad band 1 H decoupling spectra.<br />
High quality 31 P NMR spectrum, for determation of the enantiomeric excess of phosphonate<br />
esters, was obtained by using quinine as a chiral solvating agent.<br />
The molar ratio of phosphonate esters :quinine varise from 1:0.5 to 1:7. It was found that the best<br />
result could obtained in ratio 1:1. Maybe other factors such as temperature, time still need to be<br />
invested for better results.<br />
For the chiral solvating agent is expensive ,we also try to find some appropriate methods to<br />
recycle it.<br />
Fig. 31 P NMR spectrum of a chiral<br />
organophosporus in the presence of<br />
quinine.<br />
References<br />
[1] Alina Maly, Barbara Lejczak and Pawel Kafarski :Tetrahedron: Asymmetry 14 (2003) 1019–1024<br />
258
Symposium 6<br />
Phosphorus Compound and Medicinal Chemistry
KL-9<br />
A CORRELATION OF ANTIRESORPTIVE STRUCTURE ACTIVITY RELATIONSHIPS<br />
IN NITROGEN-CONTAINING BISPHOSPHONATES CO-CRYSTALIZED IN FARNESYL<br />
DIPHOSPHATE SYNTHASE SUGGESTS THEIR BINDING MODE<br />
F. H. Ebetino* 1 , B. L. Barnett 4 , B. A. Kashemirov 2 , C. Roze 2 , C. E. McKenna 2 , J. Hogan 2 , A. G. Evdokimov 3 , M. E.<br />
Pokross 3 , J. Dunford 5 , Z. Xia 5 , K. Kavanagh 5 , R. G. G. Russell 5<br />
1New Drug Development, Procter and Gamble Pharmaceuticals, Mason, 2Chemistry Department, University of<br />
Southern California, Los Angeles, CA, 3New Drug Development, Procter and Gamble Pharmaceuticals, Mason, OH,<br />
4Chemistry Department, University of Cincinnati, Cincinnati, OH, United States, 5Botner Research Centre, Oxford<br />
University, Oxford<br />
Investigations continue to better understand the precise mechanism of action of bisphosphonates<br />
that contributes to their ability to be utilized as excellent therapies for metabolic bone diseases such<br />
as osteoporosis. Both the biochemical and mineral targets and structure-activity relationships are<br />
being established. Farnesyl diphosphate synthase (FDPS) is a metabolic enzyme that has been<br />
demonstrated to be a major molecular target of nitrogen-containing bisphosphonates (N-BPs). It has<br />
been known for many years that minor changes to the structure of N-BPs can dramatically affect<br />
their antiresorptive potency. However, a detailed explanation has been lacking. Progress on the<br />
generation of co-crystal structures of this enzyme in the presence of several potent and weak N-BP<br />
inhibitors has provided an opportunity to examine the precise way in which bisphosphonates act on<br />
FDPS. The active site of FDPS contains two substrate binding sites (for GPP/DMAPP and for IPP).<br />
The current protein crystallographic evidence shows that risedronate and zoledronate occupy the<br />
GPP/DMAPP site in a very similar manner correlating with their very potent enzyme inhibition<br />
(IC50’s 4.1, 5.7 nM respectively). Other clinically relevant bisphosphonates such as alendronate, and<br />
ibandronate seem to occupy this site in a less optimal manner (IC50’s 325, 23 nM respectively). We<br />
have therefore begun to investigate whether wide ranging inhibitory potency differences observed<br />
among N-BPs in vivo and as inhibitors of the human enzyme can be explained by key interactions<br />
within the GPP/DMAPP site.<br />
Additional co-crystal data on several potent and weakly active N-BPs have been assigned. These<br />
structures all closely compare with the PCP binding characteristics of risedronate. Also, key<br />
interactions of the critical nitrogen residue with Threonine 201 –OH and the Lysine 200 backbone<br />
C=O were observed with all potent N-BPs exhibiting appropriate NHO angle of greater than 125<br />
degrees and a N-O distance of 3.1A or less. However, the weakly active N-BPs, NE-11809 and NE<br />
58051, NE58086 display longer N-O distances of 7.01A, 4.58A, and 4.28 respectively, explaining<br />
their lack of activity. Furthermore, we have successfully predicted these binding modes utilizing<br />
computational modeling techniques. Additional active analogs were also studied. Thus, NE-11808,<br />
NE-11807 and NE-58025 exhibited similar H-bonding characteristics involving the nitrogen of the<br />
N-BP. Comparative analyses of structurally and clinically relevant N-BP’s is now possible with<br />
these techniques. With the correlations observed, the GPP site and the accessibility of these<br />
hydrogen bonding sites to the nitrogen moiety is further established as a key explanation for the<br />
differences in potency of N-BPs. These data also suggest contrasting 3-D structural requirements<br />
for the biochemical effects of the nitrogen containing bisphosphonates vs the shape and orientation<br />
necessary for these agents to exhibit high bone mineral affinity.<br />
259
KL-10<br />
SPECIFICITY OF PHOSPHOTHREONINE RECOGNITION BY FHA DOMAINS<br />
Ming-Daw Tsai<br />
Institute of Biological Chemistry and Genomics Research Center, Academia Sinica, Taiwan, and Ohio State University,<br />
Columbus, Ohio, USA<br />
Recently a phosphorylation-dependent recognition domain, known as forkhead-associated (FHA)<br />
domain, has been shown to mediate protein-protein interactions in many cellular processes of<br />
different species. While the sequence homology of FHA domains is relatively low (∼ 20%),<br />
several tertiary structures solved in our lab reveal a remarkably similar folding, consisting of<br />
-strands linked by several loops to form two large twisted antiparallel -sheets folded into a<br />
-sandwich.<br />
A wealth of information on the ligand specificity of FHA domains has been obtained by use of<br />
short phosphopeptides and phosphopeptide libraries consisting of 6-15 residues. These studies<br />
with short phosphopeptides showed that, while the Rad53 FHA1 domain specifically recognizes the<br />
phosphothreonine peptides containing Asp at +3 position (pTXXD), the Rad53 FHA2 domain is<br />
able to bind both Thr- and Tyr-phosphorylated peptides containing a hydrophobic amino acid at +3<br />
and +2 position (pTXXL/I and pYXL/I), respectively.<br />
Interestingly, unlike other FHA domains, the ligand recognition by human Ki67 FHA domain is<br />
not dictated by any of the conserved motifs mentioned above, but involves an extended binding<br />
surface. The FHA domain of human Ki67 interacts with hNIFK, recognizing a 44 residue<br />
fragment, hNIFK(226-269), phosphorylated at T234. Here we show that high affinity binding<br />
requires sequential phosphorylation by two kinases, CDK1 and GSK3, yielding pT238, pT234, and<br />
pS230. We determined the solution structure of Ki67FHA in the complex with the triply<br />
phosphorylated peptide hNIFK(226-269)3P, revealing not only local recognition of pT234 but<br />
also the extension of the -sheet of the FHA domain by the addition of a -strand of hNIFK. The<br />
present structure represents an important complex of an FHA domain with a biologically relevant<br />
binding partner, provides novel insight into ligand specificity and potentially links the cancer<br />
marker protein Ki67 to a signaling pathway associated with cell-fate specification.<br />
Reference<br />
1. “Structure and Function of A New Phosphopeptide Binding Domain Containing the FHA2 of Rad53” by Hua Liao,<br />
In-Ja L. Byeon, and Ming-Daw Tsai, J. Mol. Biol. 294, 1041-1049 (1999).<br />
2. “FHA Domain-Ligand Interactions: Importance of Integrating Chemical and Biological Approaches”. Anjali<br />
Mahajan, Chunhua Yuan, Brietta L. Pike, Jorg Heierhorst, Chi-Fon Chang, and Ming-Daw Tsai, J. Am. Chem. Soc. 127,<br />
14572-14573 (2005).<br />
3. “Sequential Phosphorylation and Multisite Interactions Characterize Specific Target Recognition by the FHA<br />
Domain of Ki-67”, by In-Ja L. Byeon, Hongyuan Li, Haiyan Song, Angela M. Gronenborn, and Ming-Daw Tsai,<br />
Nature Structural and Molecular Biology 12, 987-993 (2005).<br />
260
KL-18<br />
PHOSPHONATE ANALOGS FOR DRUG DESIGN<br />
C. E. McKenna 1 *, B. A. Kashemirov 1 , T. G. Upto n1 , L. W. Peterson 1 , J. Bala, K. M. Błażewska 1 , C. Sucato 1 , M. F.<br />
Goodman 1 , S. H. Wilson 2 , L. C. Pedersen 2 , F.H. Ebetino and J. M. Hilfinger 3<br />
1 Department of Chemistry, University of Southern Calif., Los Angeles, CA 90089 USA<br />
2 Laboratory of Structural Biology, NIEHS, Research Triangle Park, NC USA 27709<br />
3 TSRL, Inc., Ann Arbor, MI 48108 USA<br />
Phosphonate analogs mimicking naturally occurring biophosphates are useful tools for probing<br />
enzyme structure and function, providing insights that can inform drug design. Three examples will<br />
be given, based on recent work in our laboratory. 1) DNA polymerase β is a key DNA repair<br />
enzyme that is a potential new target for antineoplastic drugs. To examine leaving-group effects on<br />
the nucleotidyl transfer mechanism and fidelity of DNA polymerase β, we synthesized a series of<br />
β,γ-CXY bisphosphonic acid analogs of dGTP, in which X, Y = H, F, Cl, Br or Me. Structural<br />
evidence suggests that the analogues bind in essentially the native conformation, making them<br />
suitable substrates for probing linear free energy relationships (LFERs) in transientkinetics<br />
experiments. In addition, docking experiments together with crystal structure studies of a ternary<br />
complex of DNA pol β with a primer, template and β,γ-CHF dGTP suggest that a fluorine-hydrogen<br />
bridging interaction within the dNTP binding pocket contributes to stereospecific binding of one of<br />
the two β,γ-CHF diastereomers. 2) Synthesis, and characterization of new analogs of<br />
bisphosphonates effective in bone disease will be discussed. 3) The synthesis and preliminary<br />
evaluation of stereoisomeric depeptide prodrugs of cidofovir (HPMPC) a broad-spectrum antiviral<br />
agent that is used to treat AIDS-related CMV retinitis, will be described. These analogs permit an<br />
assessment of peptide stereochemistry on prodrug transport and activation to parent drug.<br />
261
KL-20<br />
CHIRAL FUNCTIONALIZED PHOSPHONATES WITH BIOLOGICAL SIGNIFICANCE<br />
Chengye Yuan<br />
State Key Laboratory of Bio-organic and Natural Products Chemistry,<br />
Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences.<br />
Shanghai 200032, China.<br />
As a class of organic molecules with potential biological activities, functionalized phosphonates<br />
aroused interests of organic chemists working on the medicinal and allied fields. In the first part of<br />
this paper, asymmetric synthesis of amino-phosphonic acids based on 1,2- and 1,3-H migration was<br />
demonstrated. Both difluoro- and trifluoromethylated counterparts were also reported. Our recent<br />
attention is focused on the chemoenzymatic approach to title compounds. In addition to the<br />
structural effect of substract on bio-catalytical reduction by baker’s yeast, we have also developed a<br />
Candida Antarctica Lipase B (CALB)-catalyzed acetylation as well as Candida rugosa Lipase<br />
(CRL)-catalyzed hydrolysis in organic media in combination with immobilized mucormichei (IM)<br />
mediated hydrolysis for the preparation of optically pure hydroxyalkylphosphonates and their<br />
derivative. A group of biologically active phosphorus compounds including phosphocarnitine,<br />
phosphogabob and fosfomycine was prepared. Dynamic kinetic resolution (DKR) was studied in<br />
the enzymatic resolution of functionalized phosphonates. Both entiomers of<br />
2-oxo-4-hydroxy-4-alkyl/aryl alkane phosphonates prepared by enzymatic method are converted<br />
catalytically to chchiral 2-phosphoryl-3-oxo-5-alkyl/aryltetrahydrofuranes by Rhodium acetate via<br />
intramolecular O-H insertion reaction. The presence of β-ketophosphonate skeleton in these<br />
heterocyclics allowed this cyclic Hornor-Wadswath-Emmons reaction with aldehyde to furnish<br />
chiral α,β-unsaturated ketone, a new class of building block in organic synthesis.<br />
Acknowlegements: The Project was supported by National Natural Science Foundation of China.<br />
(20372076, 20672132)<br />
262
IL-19<br />
STEREOCONTROLLED SYNTHESIS OF PHSOPHOROTHIOATE DNA AND RNA BY<br />
THE OXAZAPHOSPHOLIDINE APPROACH<br />
Takeshi Wada<br />
Department of Medical Genome Sciences, Graduate School of Frontier Sciences,The University of TokyoBioscience<br />
Building 702, 5-1-5 Kashiwanoha, Kashiwa 277-8562, Japan Tel: +81-4-7136-3612, Fax: +81-4-7136-3612,<br />
E-mail: wada@k.u-tokyo.ac.jp<br />
In recent years, a great deal of attention has been focused on small DNA and RNA molecules as<br />
therapeutic agents for selective inhibition of gene expression. [1] Oligonucleotide therapeutic agents,<br />
such as antisense DNAs, ribozymes, and siRNAs act on a target mRNA and arrest the protein<br />
synthesis. In order to stabilize these molecules in cells, a chemical modification of internucleotidic<br />
phosphodiester bonds is quite effective. Phosphorothioate DNA is one of the most widely used<br />
backbone-modified antisense DNAs. [2] However, the currently used phosphorothioate DNAs are<br />
random mixtures of diastereomers since the chirality of the phosphorous atom cannot be controlled<br />
by use of the current synthetic methods. [3] Because the properties of phosphorothioate DNAs, such<br />
as hybridization abilities with mRNA, affinities to proteins, and tolerances against nucleases are<br />
considered to be affected by the chirality of the phosphorous atoms, it is an important subject to<br />
develop an efficient method for obtaining stereoregulated phosphorothioate DNAs. Quite recently,<br />
we have developed a novel approach for the stereocontrolled synthesis of phosphorothioate DNAs<br />
and RNAs by the use of nucleoside 3’-O-oxazaphospholidine derivatives as monomers and<br />
N-(cyanomethyl) ammonium salts as activators (oxazaphospholidine approach). [4-12] In this paper, I<br />
wish to describe a recent progress of stereocontrolled synthesis of P-chiral DNA and RNA analogs,<br />
which are useful as oligonucleotide therapeutic reagents, by the oxazaphospholidine approach.<br />
An oxazaphospholidine approach for the stereocontrolled synthesis of phosphorothioate DNAs<br />
and RNAs is outlined in Scheme 1. Properly protected nucleosides 1 were allowed to react with<br />
cyclic phosphorochloridite derivatives 2 to give the corresponding nucleoside 3’-cyclic<br />
phosphoramidite monomers 3 in good yields with high diastereoselectivities. The stereoselectivity<br />
of the reaction was found to be highly dependent on the nature of the substituent groups (R 1 , R 2 , and<br />
R 3 ) on the oxazaphospholidine ring of 2. Thus obtained diastereopure nucleoside 3’-cyclic<br />
phsophoramidites 3 were condensed with nucleosides 4 bearing the free 5’-OH in the presence of an<br />
263
acid activator. When N-(cyanomethyl)pyrrolidinium triflate (CMPT) was employed as an activator,<br />
the condensation reaction proceeded smoothly and gave the corresponding dinucleoside phosphite<br />
intermediate 5 with excellent diastereoselectivity. In contrast to this fact, the condensation in the<br />
presence of a conventional activator, 1H-tetrazole, proceeded very slowly with low<br />
diastereoselectivity. After successive N-acetylation and P-sulfurization, the diastereopure fully<br />
protected dinucleoside phosphorothioates 6 were obtained in good yields. Finally, all of the<br />
protecting groups were removed by a conventional procedure to give the diastereopure dinucleoside<br />
phosphorothioates 7 in good yields. The present methodology was also applied to the solid-phase<br />
synthesis of stereoregulated phosphorothioate DNAs. The diastereopure phosphorothioate DNAs<br />
(4–10mer) were obtained in good yields. Work on the solid-phase synthesis of phosphorothioate<br />
RNAs is now in progress.11 This approach would be applicable to the synthesis of various P-chiral<br />
oligonucleotide analogs other than phosphotothioates such as boranophaosphate DNA. [13,14] Further<br />
studies are now underway in this direction.<br />
References<br />
[1]. Therapeutic Oligonucleotides; Cho-Chung, Y. S.; Gewirtz, A. M.; Stein, C. A.; New York Academy of Sciences:<br />
New York, 2004; and references therein.<br />
[2]. Levin, A. A. Biochim. Biophys. Acta 1999, 1489, 69-84.<br />
[3]. Zon, G.; Stec, W. J. In Oligonucleotides and Analogues: A Practical Approach; Eckstein, F., Ed.; IRL Press: Oxford<br />
University, 1991; pp 87-108. Zon, G., In Protocols for Oligonucleotides and Analogs, Methods in Molecular Biology,<br />
Vol. 20, Agrawal, S., Ed.; Humana Press: Totowa, New Jersey, 1993; pp 165-189.<br />
[4]. Oka, N., Wada, T., Saigo. K. Nucleic Acids Res. Suppl. 2001, 1, 13-14.<br />
[5]. Wada, T., Oka, N., Saigo. K. Nucleic Acids Res. Suppl. 2002, 2, 153-154.<br />
[6]. Oka, N., Wada, T., Saigo. K. J. Am. Chem. Soc. 2002, 124, 4962-4963.<br />
[7]. Oka, N., Wada, T., Saigo. K. J. Am. Chem. Soc. 2003, 125, 8307-8317.<br />
[8]. Wada, T., Oka, N., Saigo. K. Nucleic Acids Res. Suppl. 2003, 3, 109-110.<br />
[9]. Wada, T., Oka, N., Saigo. K. Nucleos. Nucleot. Nucl. Acids 2003, 22, 1171-1173.<br />
[10]. Oka, N., Wada, T., Saigo. K. Nucleos. Nucleot. Nucl. Acids 2003, 22, 1411-1413.<br />
[11]. Wada, T., Fujiwara, S., Sato, T., Oka, N., Saigo. K. Nucleic Acids Res. Symp. Ser. 2004, 48, 57-58.<br />
[12]. Wada, T. Front. Org. Chem. 2005, 1, 41-61.<br />
[13]. Oka, N., Maizuru, Y., Shimizu, M., Saigo, K., Wada, T. Nucleic Acids Symp. Ser. 2005, 49, 131-132.<br />
[14]. Wada, T., Maizuru, Y., Oka, N., Saigo, K. Bioorg. Med. Chem. Lett. 2006, 16, 3111-3114<br />
264
IL-20<br />
3',5'-CYCLIC DIGUANYLIC ACID AND RELATED COMPOUNDS: SYNTHESIS,<br />
CHEMICAL PROPERTIES, AND BIOLOGICAL ACTIVITIES<br />
Yoshihiro Hayakawa<br />
Graduate School of Information Science and CREST of JST, Nagoya University, Chikusa, Nagoya 464-8061, Japan<br />
We synthesized cyclic bis(3'–5')diguanylic acid (c-di-GMP) and related compounds and<br />
investigated their biological activities, such as inhibitory effects on biofilm formation of some<br />
bacteria and on basal and growth factor-stimulated human colon cancer cell proliferation.<br />
First, we developed the high-efficient synthesis of c-di-GMP outlined in Scheme 1, which can<br />
provide a few grams of the target compound by one-cycle synthesis. The success was produced<br />
mainly by the use of the following useful method and strategy. The first is the use of the<br />
di-tert-butylsilanediyl group for protection of 3’- and 5’-hydroxy groups of guanosine, which can be<br />
selectively removed from the 3',5'-O-di-tert-butylsilanediyl-2'-O-TBDMS guanosine intermediate<br />
by using a mixture of HF•pyridine complex and pyridine. This strategy allowed 100%<br />
regioselective production of the 2'-O-TBDMS guanosine intermediate. The second is employment<br />
of our original phosphoramidite method using imidazolium perchlorate as a promoter in the<br />
presence of molecular sieves 3A for the formation of a linear (3’–5’)diguanylic acid intermediate.<br />
This method gave the desired product in a higher yield than the existing standard phosphoramidite<br />
method using 1H-tetrazole as a promoter. Fundamental strategies used in this synthesis could be<br />
applied to the synthesis of a variety of c-di-GMP artificial analogs with modified nucleobases,<br />
sugars, and backbones. Actually, we have synthesized c-GpdGp, c-GpIp, c-GpAp, and c-GpGps<br />
by means of strategies somewhat modified from those used in the method shown in Scheme 1.<br />
Investigation on stability of c-di-GMP and its analogs revealed that these cyclic diribonucleotides<br />
are stable in a human serum solution, an acid solution or a base solution. Thus, c-di-GMP was left<br />
intact in a 100 mM or 200 mM human serum solution at 37 °C for 24 h. This nucleotide also<br />
underwent no decomposition by treatment with a pH 3 hydrochloric acid or a pH 10 sodium<br />
hydroxide solution at 25 °C for 1 h or at 100 °C for 10 min. The c-di-GMP analogs have similar<br />
stability to c-di-GMP.<br />
We next examined biological activities of c-di-GMP and its analogs. As a result, we found that<br />
c-di-GMP appears to act as a second messenger in bacteria and shows a variety of important<br />
bioactivities. Among them, the particularly attractive one is the regulation of biofilm formation<br />
and infection to host cells by various bacteria; that is, inhibition of biofilm formation of S. aureus, P.<br />
aeruginosa and E. coli; reduction of infection of S. aureus to HeLa cells; reduction of the virulence<br />
of biofilm-forming S. aureus strains in a mouse model of mastitis infection in vivo; and activation of<br />
immune response. According to results that we observed, it may be speculated that c-di-GMP acts<br />
in biofilm formation and infection of a bacterium as shown in Figure 1. c-di-GMP also inhibits<br />
basal and growth factor-stimulated human colon cancer cell proliferation. In addition,<br />
investigations of c-dGpGp revealed that this artificial compound has different biological activities<br />
from those of c-di-GMP. Thus, both c-di-GMP and c-dGpGp inhibit biofilm formation of S.<br />
aureus and V. parahaemolyticus, but the strength of their inhibitory effects is not the same and<br />
c-dGpGp has a stronger effect than c-di-GMP in either bacterium. In conclusion, our findings<br />
described here suggest that c-di-GMP and its analogs have high potential as antibacterial and<br />
immunotherapeutic agents.<br />
265
IL-23<br />
SYNTHESIS OF DINUCLEOSIDE PHOSPHATES FROM c-di-GMP TO AZTppppA<br />
Zhaoying Zhang, Qianwei Han, Jianwei Zhao, Barbara L. Gaffney, and Roger A. Jones*<br />
Department of Chemistry and Chemical Biology, Rutgers, The State University of New Jersey, Piscataway, New Jersey<br />
08854<br />
Bis-(3'-5')-cyclic guanosine monophosphate (c-di-GMP) is a ubiquitous bacterial signaling<br />
molecule responsible for regulating biofilm formation, cell differentiation, and a variety of<br />
pathogenic processes. We have recently reported a new method for its efficient chemical synthesis<br />
involving an initial phosphoramidite coupling and a subsequent H-phosphonate cyclization. The use<br />
of P(III) chemistry in both steps permits fast, high yield reactions. We have also synthesized and<br />
separated diastereomers of the phosphorothioates of c-di-GMP. Further, using UV, CD, and NMR,<br />
we have demonstrated that c-di-GMP exists as a mixture of five different but related structures in an<br />
equilibrium that is sensitive both to its concentration and to the metal present.<br />
Dinucleoside polyphosphates (5'-5'''-NpnN) have been proposed as signaling and regulatory<br />
molecules for many different biological functions in most forms of life. We have reported a<br />
one-flask, high-yield synthesis of Ap4A, Ap4G, Gp4G, and Ap5A by reaction of a nucleoside<br />
trimetaphosphate with a nucleoside mono- or diphosphate in DMF with ZnCl2. We have also<br />
extended this method to the preparation of versions of Ap4A with a thioate, selenoate, or boranoate<br />
introduced into the trimetaphosphate. We have recently modified our approach so as to introduce a<br />
thioate at both ends and have prepared a variety of modified versions of AZTp4A as potential<br />
non-hydrolyzable inhibitors of the AZT excision reaction from HIV-1 reverse transcriptase.<br />
266
IL-24<br />
THE EFFECTS OF REVISIBLE PHOSPHORYLATION ON PEPTIDE AND PROTEIN<br />
LOCAL STRUCTURE<br />
Yan-Mei Li, Yu-Fen Zhao<br />
Key Laboratory of Bioorganic Phosphorus Chemistry and Chemical Biology (Ministry of Education), Department of<br />
Chemistry, Tsinghua University, Beijing 100084<br />
The regulation of biochemical activity by protein post-translational modifications is a pervasive<br />
cellular control mechanism. Protein phosphorylation is a key posttranslational modification<br />
mechanism controlling the conformation and activity of many proteins. Through the use of<br />
phosphorylation cycles and cascades, the cell is able to regulate a diverse set of processes, including<br />
cellular movement, reproduction and metabolism. It is the simplicity, reversibility and flexibility of<br />
phosphorylation that explains why it has been adopted as the most general control mechanism of the<br />
cell. The use of the phosphorylation/dephosphorylation of a protein as a control mechanism has<br />
many advantages: rapid, taking as little as a few seconds, no require new proteins to be made or<br />
degraded and easily reversible.<br />
With regard to its regulatory mechanism, it is of fundamental importance to study the role and<br />
function in protein networks by phosphorylation. Increasing evidence has implicated an essential<br />
role of phosphorylation by activating α-COOH to form amide bond in peptide synthesis, increasing<br />
the cis content of the peptidyl-propyl amide bond, causing local structure more ordered, regulating<br />
intrisically disorder domain, and effecting the protein distribution in cell. Phosphate acts as the<br />
molecular switch to modulate protein networks.<br />
Reference<br />
[1] Chen YX, Du JT, Zhou LX, Li YM*, et al. Alternative O-GlcNAcylation/ O-Phosphorylation of Ser16 Induce<br />
Different Conformational Disturbances to the NTesrminus of Murine Estrogen Receptor β. Chem. Biol. 2006, 13:<br />
937-944.<br />
[2] Du JT, Li YM*, Wei W, et al. Low Barrier Hydrogen Bond Between Phosphate and Amide Group in Phosphopeptide.<br />
J. Am. Chem. Soc. 2005, 127: 16350-16351.<br />
[3] Du JT, Li YM*, Ma QF, et al. Synthesis and Conformational Properties of Phosphopeptides Related to the Human<br />
Tau Protein. Regul. Pept. 2005, 130: 48-56.<br />
[4] Schlummer S, Vetter R, Kuder N, Chen YX, Li YM, et al. Influence of Serine O-Glycosylation or O-Phoshorylation<br />
Close to the vJun Nuclear Localisation Sequence on Nuclear Import. ChemBioChem 2006, 7: 88-97.<br />
[5] Chen ZZ, Tan B, Li YM*, et al. Activity Difference between α-COOH and β-COOH in N-Phosphoryl Aspartic Acids.<br />
J. Org. Chem. 2003, 68: 4052-4058.<br />
[6] Chen ZZ, Li YM*, Wang HY, et al. Theoretical Study on the Rearrangement of β-OH and γ-OH in ESI Mass<br />
Spectrometry by N-phosphorylation. J. Phys. Chem. A 2004, 108: 7686-7690.<br />
267
IL-25<br />
ALL PHOSPHATES ARE NOT BORN CHEMICALLY EQUAL IN RNA<br />
Jyoti Chattopadhyaya<br />
Department of Bioorganic Chemistry, Box 581, Biomedical Center,Uppsala University, S-751 23 Uppsala, Sweden<br />
jyoti@boc.uu.se<br />
We here show that the electronic properties and the chemical reactivities of the internucleotidic<br />
phosphates in the heptameric ssRNAs are dissimilar in a sequence-specific manner because of their<br />
nonidentical microenvironments, in contrast with the corresponding isosequential ssDNAs. This has<br />
been evidenced by monitoring the δH8G shifts upon pH-dependent ionization [pKa1] of the central<br />
9-guaninyl(G) to the 9-guanylate ion (G−), and its electrostatic effect on each of the internucleotidic<br />
phosphate anions, as measured from the resultant δ31P shifts [pKa2] in the isosequential heptameric<br />
ssRNAs vis-àvis ssDNAs: [d/r(5'-Cp1Ap2Q1p3Gp4Q2p5Ap6C-3'): Q1 = Q2 = A (5a/5b) or C<br />
(8a/8b), Q1 = A, Q2 = C(6a/6b), Q1 = C, Q2 = A (7a/7b)]. These oligos with single ionizable G in<br />
the centre are chosen because of the fact that the pseudoaromatic character of G can be easily<br />
modulated in a pH-dependent manner by its transformation to G− (the 2'-OH to 2-O− ionization<br />
effect is not detectable below pH 11.6 as evident from the N1-Me-G analog), thereby<br />
modulating/titrating the nature of the electrostatic interactions of G to G− with the phosphates,<br />
which therefore constitute simple models to interrogate how the variable pseudoaromatic characters<br />
of nucleobases under different sequence context [Chattopadhyaya et al J. Am.Chem. Soc, 126,<br />
8674-8681 (2004)] can actually influence the reactivity of the internucleotide phosphates as a result<br />
of modulation of sequence-context specific electrostatic interactions.<br />
References<br />
[1] J. Barman, S. Acharya, S. Chatterjee, . Engstrom and J. Chattopadhyaya, Org. Biomol. Chem, 4, 928 - 941 (2006).<br />
[2] S. Chatterjee, W. Pathmasiri, D. Honcharenko, O. P. Varghese, M. Maiti & J. Chattopadhyaya, Org.Biomol. Chem., 4,<br />
1675-1686 (2006)<br />
[3] Oommen P. Varghese, Jharna Barman, Wimal Pathmasiri, Oleksandr Plashkevych, Dmytro Honcharenko, and Jyoti<br />
Chattopadhyaya. J. Am. Chem. Soc. 128(47) pp 15173 – 15187 (2006)<br />
268
IL-26<br />
DESIGN, SYNTHESIS AND BIOLOGICAL ACTIVITY OF Α-AMINO-SUBSTITUTED<br />
THIOPHOSPHATE-PHOSPHONATES AND NOVEL NAPHTHOQUINONE FUSED<br />
PHOSPHORUS HETEROCYCLES<br />
Zhanwei Cui Zhiwei Miao * Jianfeng Zhang Ruyu Chen<br />
State Key Laboratory and Institute of Elemento-Organic Chemistry, Nankai University, Tianjin 300071, P.R.China<br />
Email: miaozhiwei@syn.nankai.edu.cn<br />
The phosphoryl group is of fundamental significance in many of the most important molecules<br />
that control molecular replication, cell biochemistry and metabolic processes in all living species. 1-4<br />
On the other hand, α-amino phosphonates constitute an important class of biologically active<br />
compounds, and their synthesis has been a focus of considerable attention in synthetic organic<br />
chemistry as well as in medicinal chemistry.<br />
Nitrogen mustards (NMs) are useful chemotherapeutic agents in the treatment of lymphoma,<br />
leukemia, multiple myeloma and ovarian carcinoma. 5 The antitumor activity of NMs has been<br />
attributed to their ability to cross-link the twin strands of DNA. Phosphoramide mustard is also an<br />
alklating agent that cross-links interstrand DNA, such as cyclophosphamide (CP),ifosfamide (IFA)<br />
and trofosfamide. 6-9 Cyclophosphamide is a widely used anticancer alklating agent that requires<br />
activation in vivo. It can liberate cytotoxic phosphoramide mustard and acrolein by β-elimination.<br />
However, acrolein, a byproduct of β-elimination, can cause hemorrhagic cystitis, a side effect<br />
observed during CP therapy. To overcome the shortcoming of CP, many different kinds of<br />
compounds containing phosphamide mustard have been designed and synthesized. 10-12 On that basis,<br />
we designed and synthesized the title compound to find novel anticancer prodrug.<br />
We report here a facile synthetic method for the preparation of Diphenyl α-(O-phenyl<br />
bis(2-chloroethyl)amidophosphorylamino)phosphonates (4). It consists of the reaction of O-phenyl<br />
bis(2-chloroethyl)amidophosphoroamidoate (1) with a substituted benzaldehyde or ketones (2) and<br />
triphenyl phosphite (3) in the presence of acetyl chloride as catalysis. 13 The present method affords<br />
higher yields in the condensation reaction and high purify. (Scheme 1)<br />
Cl<br />
Cl<br />
N<br />
O<br />
P<br />
O<br />
1<br />
NH 2 +<br />
R 1<br />
O<br />
R 2<br />
+ (PhO) 3P<br />
2 3<br />
Scheme 1<br />
269<br />
O<br />
Cl<br />
r.t., 6-8h<br />
R1 H<br />
N C<br />
4 R 1 R 2 Yield (%) 4 R 1 R 2 Yield (%)<br />
4a H C 6H 5 92 4f H 4-ClC 6H 4 89<br />
4b H 4-MeC6H4 90 4g H 4-BrC6H4 84<br />
4c H 4-MeOC6H4 90 4h (CH2) 4 75<br />
4d H 4-O2NC6H4 86 4i (CH2) 5 73<br />
4e H 3,4-OCH2OC6H3 89<br />
Cl<br />
Cl<br />
N<br />
O<br />
P<br />
O<br />
4<br />
R 2<br />
O<br />
P<br />
OC 6H 5<br />
OC 6H 5
Reference<br />
1. Zhou, J.; Chen, R. Y. Phosphorus, Sulfur, Silicon 1996, 118, 247.<br />
2. Bergman, J.; Van der Plas, H. C.; Simonyi, M. Heterocycles in Bioorganic Chemistry; RSC: Cambridge, 1991.<br />
3. Meier, C. Angew. Chem., Int. Ed. Engl., 1996, 35, 70.<br />
4. Yuan, C.; Qi, Y. Synthesis 1986, 821.<br />
5. Balcome, S.; Park, S.; Danae R.; Dorr, R.; Hafner, L.; Phillips, L.; Tretyakova, N. Chem. Res. Toxicol. 2004, 17,<br />
950-962.<br />
6. Sladek, N. E. Pharmacol. Ther. 1988, 37, 301-305.<br />
7. Friedman, O. M.; Myles, A.; Colvin, M. Adv. Cancer Chemother. 1979, 1, 143-204.<br />
8. Ludeman, S. M. Curr. Pharm. Des. 1999, 5, 627-643.<br />
9. Colvin, O. M. Curr. Pharm. Des. 1999, 5, 555-560.<br />
10. Borch, R. F.; Liu, J. W.; Schmidt, J. P.; Marakovits, J. T.; Joswig, C.; Gipp, J. J.; Mulcahy, R. T. J. Med. Chem.<br />
2000, 43, 2258-2265.<br />
11. Hu, L. Q.; Yu, C. Z.; Jiang, Y. Y.; Han, J. Y.; Li, Z. R.; Browne, P.; Race, P. R.; Knox, R, J.; Searle, P. F.; Hyde,<br />
E. I. J. Med. Chem. 2003, 46, 4818-4821.<br />
12. Jain, M.; Kwon, C. H. J. Med. Chem. 2003, 46, 5428-5436.<br />
13. Yuan, C.; Qi, Y. Synthesis .1988, 472.<br />
270
IL-27<br />
RECENT ADVANCES IN CARBAMOYLPHOSPHONATE BASED MATRIX<br />
METALLOPROTEINASE (MMP) INHIBITORS. A CLASS OF NON-TOXIC IN-VIVO<br />
ACTIVE DRUG CANDIDATES<br />
Eli Breuer<br />
Department of Medicinal Chemistry, School of Pharmacy, The Hebrew University of Jerusalem,<br />
Jerusalem, 91120 Israel<br />
Matrix metalloproteinases (MMPs) are a family of about 26 zinc-dependent endopeptidases,<br />
which collectively have the capacity to degrade all the major components of the extracellular<br />
matrix. [1] Although the MMPs play a crucial role in physiological tissue remodeling, growth and<br />
repair, their over-expression has been linked with severe chronic pathological conditions, including<br />
cancer, arthritis, several cardiovascular disorders and others. The efficient inhibit-ion of MMPs is,<br />
therefore, an important scientific and therapeutic target, which has attracted considerable attention<br />
within academia and industry for the last two decades. Yet, in spite of intensive worldwide research,<br />
which has yielded a multitude of highly in vitro potent inhibitors, no clinically useful inhibitor has<br />
been achieved. The main reasons for this failure probably have to do with unacceptable side effects<br />
resulting presumably from lack of selectivity of two kinds: 1) lack of differentiation between the<br />
various MMP subtypes; and 2) lack of selectivity toward various metal cations present in the<br />
organism. [2]<br />
As the Zn 2+ ion at the active sites of these enzymes is crucial for enzymatic activity, all attempts<br />
to develop inhibitors have been based on so-called zinc binding groups (ZBG). It has also been<br />
pointed out that the use of highly potent ZBGs might lead to a limitation in finding specific<br />
metalloproteinase inhibitors. The presence of a similar metal chelation topology in independently<br />
identified and structurally unrelated lead compounds indicates that Zn 2+ binding follows a rather<br />
universal recognition motif, which dominates the binding characteristics. Consequently, many if not<br />
most potent active site directed Zn 2+ protease inhibitors exploit such a universal binding motif, and<br />
are likely to exhibit a low specificity profile, at least prior to optimization, which is usually<br />
attempted through substituent group modification. Accordingly, for the design of more selective<br />
MMPIs, weaker ZBGs should be preferred.<br />
We have recently introduced the carbamoylphosphonic group as a novel ZBG. [3] We have<br />
synthesized carbamoylphosphonates of various structures, [4] and evaluated them in numerous in<br />
vitro and in vivo biological models, related to cancer metastases, angiogenesis, cardiovascular<br />
disease, wound healing and others. Thus, we have discovered novel, in vivo potent and nontoxic<br />
inhibitors.<br />
This lecture will describe the recent advances in our work on carbamoylphosphonate based MMP<br />
inhibitors, including the mode of MMP inhibition, structure-activity relationships, in vivo results<br />
obtained in disease models, and the unique pharmacokinetic characteristics of this class of polar<br />
compounds.<br />
Reference<br />
[1] J. W. Skiles, N. C. Gonnella, A. Y. Jeng. Current Med. Chem. 2004, 11, 2911.<br />
[2) E. Breuer, J. Frant and R. Reich, Expert Opin. Ther. Patents, 2005, 15, 253.<br />
[3] E. Farkas, Y. Katz, S. Bhusare, R. Reich, G.-V. Röschenthaler, M. Königsmann, and E. Breuer, J. Biol. Inorg. Chem.<br />
2004, 9, 307.<br />
[4) E. Breuer, C. J. Salomon, Y. Katz, W. Chen, S. Lu, G.-V. Röschenthaler, R. Hadar, and R. Reich, J. Med. Chem.<br />
2004, 47, 2826.<br />
271
IL-48<br />
NOVEL FUNCTIONALITY IN ORGANOPHOSPHORUS CHEMISTRY<br />
Koop Lammertsma<br />
Department of Chemistry, Faculty of Sciences,Vrije University, Amsterdam, the Netherlands<br />
Phosphinidenes R-P are remarkably reactive. For long they eluded spectroscopic detection other<br />
than by EPR. Only recently were we able to obtain IR and UV spectra of the mesityl derivative<br />
under matrix isolation conditions. Those complexed to transition metal groups are spectroscopically<br />
equally elusive when they are of the Fischer-type, but their very rich chemistry sharply contrasts<br />
that of triplet Mes-P. In this presentation we elaborate on synthetic routes by which the electrophilic<br />
and nucleophilic R-P=MLn can be generated and used. This reactivity of these species will be<br />
addressed. Analogies with hydrocarbon chemistry will also be highlighted in the rearrangement of<br />
selected products.<br />
Me<br />
Me<br />
Me<br />
P<br />
Ru<br />
Highly strained, yet stable P-containing ring structures, such as bicyclobutanes and<br />
(poly)spiranes, can be synthesized with the aid of electrophilic R-P=MLn. Selected novel examples<br />
will be presented.<br />
N<br />
i-Pr<br />
P<br />
Fe(CO) 4<br />
O<br />
P<br />
N'<br />
N<br />
N<br />
N N<br />
Ph<br />
Rh<br />
N<br />
Cl Cl Cl<br />
272<br />
P<br />
Mes*<br />
N Ph<br />
N<br />
R 2<br />
N C<br />
Cp*<br />
Ir<br />
P<br />
C<br />
P<br />
R<br />
R 3<br />
ML n<br />
N R 1
IL-64<br />
STUDYING THE PHOSPHORYLATION OF FLAVONOIDS<br />
E. E. Nifantyev 1 , M. P. Koroteev 1 , G. Z. Kaziev 1 , T. Wang 1 , and L. H. Cao* ,2<br />
1 Department of Chemistry, Moscow State Pedagogical University, 119021, Moscow Russia<br />
2 College of Chemistry and Chemical Engineering, Xinjiang University, 830046, Urumqi China P.R.<br />
Phosphorylation of dihydroquercetin (1) and other flavonoids with tervalent phosphorus reagents<br />
was studied. It was found that flavonoid 1 can be directionally phosphorylated with phosphorous<br />
acid amides under mild conditions:<br />
The resulting product 2 was easily reacted with sulfur to form thiophosphate 3, which has<br />
antitumoral activity. Phosphite 5 was obtained when tetramethyldihydroquercetin (4) was treated<br />
with P(NEt2)3:<br />
Under slight heating, 5 forms phostone 6, whose structure was supported by X-ray diffraction<br />
analysis.<br />
273
O-56<br />
CATIONIC LIPIDS BASED ON PHOSPHONATE & PHOSPHORAMIDATE CHEMISTRY:<br />
SYNTHESIS AND APPLICATION TO GENE THERAPY<br />
Paul-Alain Jaffrès a , Mathieu Mével a , Jean-Jacques Yaouanc a , Jean-Claude Clément a ,<br />
Dominique Cartier a , Laure Burel, Philippe Giamarchi, Tristan Montier b , Pascal Delépine b ,<br />
Pierre Lehn b , Claude Férec b , Chantal Pichon c , Patrick Midoux c .<br />
a- CEMCA, UMR CNRS 6521, Faculté des Sciences et Techniques, Université de Bretagne Occidentale, 6 avenue Le<br />
Gorgeu, 29238 Brest, (France) ; b-Unité INSERM 613, Institut de Synergie des Sciences et de la Santé, Université de<br />
Bretagne Occidentale, avenue Foch, 29609 Brest cedex 2 (France); c-Centre de Biophysique Moléculaire, CNRS UPR<br />
4301, rue Charles Sadron, 45071 Orléans (France)<br />
Vectorisation of DNA into cells, which is required for gene therapy or cancer therapy, can be<br />
achieved according to two distinct strategies. One is based on the use of viral vectors while the<br />
second concerns the use of synthetic vectors. Synthetic vectors are very promising due to both their<br />
ability to carry large plasmid and the absence of immunogenic side effect. The chemical structure of<br />
the synthetic vectors can be classified into two categories: cationic polymers (e.g.PEI) and cationic<br />
lipids (schematized below). Despite the recent progress proving that cationic lipids or cationic<br />
polymers can be efficient for gene delivery, further improvement in term of efficiency of<br />
transfection should be done for clinical use. In our group, cationic lipids, possessing a molecular<br />
structure inspired from phospholipids present into membranes, have been synthesized over the last<br />
10 years. The chemical structures of these vectors are characterized by the presence of a<br />
phosphonate (A) or phosphoramidate (B) functional group on which the lipid chains are linked.<br />
Several chemical variations on the lipid chain, the linker or the cationic head group have been<br />
investigated. These chemical modifications and optimizations lead to synthetic vectors [1] efficient as<br />
gene carrier for in vitro [2] and in vivo [3] essays.<br />
Reference<br />
[1] J.C. Clément, P. Delépine, H des Abbayes, C. Férec, K. Le Ny, T. Montier, J.J. Yaouanc, French patent N°0214044<br />
(2002). Extension Int. (PCT) (2003)<br />
[2] (a) Guenin, E.; Hervé, A.C.; Floch, V.; Loisel, S.; Yaouanc, J.J.; Clément, J.C.; Férec, C; des Abbayes, H.Angew.<br />
Chem. Int. Ed. Engl. 2000, 39, 629-631. (b) T. Montier, P. Delépine, K. Le Ny, Y. Fichou, M. Le Bris, E.Hardy, E.<br />
Picquet, J.C. Clément, J.J. Yaouanc, C. Férec, Biochimica & Biophysica Acta 2004, 1665, 118-133<br />
[3] (a) Gable-Guillaume, Floch, V.; et. al., Hum. Gene Ther. 1998, 9, 2309-2319. (b) P. Delépine, C.Guillaume, et. al.,<br />
Gene Medecine 2003, 5, 600-8 ; (c) E. Picquet, K. Le Ny, et. al., Bioconjugate Chem., 2005, 16, 1051-53<br />
274
O-57<br />
ENANTIOMERIC SEPARATION OF A NOVEL Α-ANMINOPHOSPHONATES<br />
CONTAINING BENZOTHIAZOL MOIETY BY LIQUID CHROMATOGRAPHY USING<br />
AMYLOSE STATIONARY PHASE<br />
Ping Lu, Baoan Song, Deyu Hu, Song Yang, Linhong Jin, Wei Xue, Yuping Zhang<br />
Center for Research and Development of Fine Chemicals, Key Laboratory of Green Pesticide and Agriculture<br />
Bioengineering, Ministry of Education, Guizhou University, Guiyang 550025, P.R. China.<br />
α-Aminophosphonate derivatives have attracted much attention in medicinal and pesticide<br />
chemistry due to their bioactivities. Some recemates of N-(substituent– benzothiazole-2-yl) -1-(substient-fluorophenyl)-O,<br />
O-dialkyl-α-aminophosphonate were found to possess good antiviral activity. To the best of our<br />
knowledge, the enantioseparation methods of recemates and the bioactivity results of enantiomers<br />
of this series of α-aminophosphonates are not available in the literature. The present report<br />
describes a chiral HPLC method for the entiomeric separation of these α-aminophosphonate<br />
derivatives using both coated and immobilized amylase-based CSP (Chiralpak IA and Chiralpak<br />
AD-H). The various chromatographic parameters such as retention factor (k’), separation factor (α),<br />
and resolution (Rs) of the solutes are investigated. Reasonably good baseline separation for these<br />
compounds was achieved using Chiralpak IA column under normal phase with n-hexane/ethanol<br />
(95:5, v/v). The validated method yields good results for precision, linearity and accuracy. In order<br />
to study the chiroptical properties and bioactivity of single stereoisomer, mg-scale separations were<br />
performed on semipreparative size Chiralpak IA column in combination with ethanol-based eluents.<br />
Every enantiomer was isolated with purity of > 98.0 e.e. and >96.0% recovery. The proposed<br />
method was found to be suitable and accurate for rapid determination of enantiomeric purity of this<br />
series of α-aminophosphonate derivatives.<br />
(1) (2)<br />
(3)<br />
Fig. Chromatograms of N-(4-methyl-benzothiazole-2-yl)-1-(2-fluorophenyl)-O,O-diethyl- α-aminophosphonate<br />
racemate (1), R-isomer (2) and S-isomer (3) isolated at 270nm on the Chiralpak IA using n-hexane and ethanol (95:5,<br />
v/v), 1.0mL/min.<br />
275
O-58<br />
BEAD-BASED APPROACHES TO DEVELOP THIOAPTAMERS FOR<br />
DIAGNOSTICS AND THERAPEUTICS<br />
Xianbin Yang 1 , Duane Beasley 1 , Bruce A. Luxon 2 , Johnnie Engelhardt 1 , Mark Shumbera 1 , David G. Gorenstein 2 .<br />
1 AM Biotechnologies LLC, 6023 Ave. S. #228, Galveston, Texas 77551, USA; 2 Sealy Center for Structural Biology,<br />
Department of Biochemistry and Molecular Biology, The University of Texas Medical Branch at Galveston, Texas<br />
77555, USA.<br />
Aptamers [1,2] with normal phosphate ester backbones obtained from the in vitro selection process<br />
were discovered in the early 1990s and have proven very useful as therapeutic and diagnostic agents.<br />
In December 2004, an aptamer for vascular endothelial growth factor, Macugen, made headlines as<br />
the first of its class to be approved by the US Food and Drug Administration. However, the aptamer<br />
selection method is limited to substrates and templates accepted by the polymerases required for<br />
reamplification by PCR of the selected libraries. In addition, selection is a time consuming process<br />
which involves multiple rounds of alternating selection and amplification steps in order to<br />
successively enrich aptamer sequences that show the desired properties. Thioaptamers [3] , which are<br />
thiophosphate ester backbone modified nucleic acid aptamers, offer advantages over normal<br />
aptamers due to their enhanced affinity and higher stability stemming from the properties of the<br />
sulfur backbone modifications. Over the past several years, we have demonstrated proof-of<br />
principle that a novel bead-based approach [4] can be employed to develop aptamers, thiopaptamer<br />
and other modified aptamers as well. In this presentation, we will outline our integrated novel<br />
bead-based selection procedures including the automation of the split-pool synthesis of a one-bead<br />
one-thioaptamer library, high-throughput flow cytometric sorting and a PCR-based sequencing.<br />
Additionally, we will also discuss several promising thioaptamers which have been shown in<br />
preliminary animal therapeutic dosing to increase survival in animal models of infection with West<br />
Nile virus [5] . Moreover, we will present a thioaptamer proteomics chip. (Note: Drs Gorenstein and<br />
Luxon have a financial interest in AM Biotechnologies).<br />
Reference<br />
[1] C. Tuerk, and L. Gold, Systematic evolution of ligands by exponential enrichment: RNA ligands to bacteriophage<br />
T4 DNA polymerase. Science 249 (1990) 505-10.<br />
[2] A.D. Ellington, and J.W. Szostak, In vitro selection of RNA molecules that bind specific ligands. Nature 346 (1990)<br />
818-22.<br />
[3] X. Yang, and D.G. Gorenstein, Progress in thioaptamer development. Curr Drug Targets 5 (2004) 705-15.<br />
[4] X. Yang, S.E. Bassett, X. Li, B.A. Luxon, N.K. Herzog, R.E. Shope, J. Aronson, T.W. Prow, J.F. Leary, R. Kirby,<br />
A.D. Ellington, and D.G. Gorenstein, Construction and selection of bead-bound combinatorial oligonucleoside<br />
phosphorothioate and phosphorodithioate aptamer libraries designed for rapid PCR-based sequencing. Nucleic Acids<br />
Res 30 (2002) e132.<br />
[5] X. Yang, H. Wang, D. Beasley, D. Volk, X. Zhao, B. Luxon, L. Lomas, N. Herzog, J. Aronson, A. Barrett, J. Leary,<br />
and D. Gorenstein, Selection of Thioaptamers for Diagnostics and Therapeutics. Annals of the New York Academy of<br />
Sciences. 1082 (2006) 116-119.<br />
276
O-59<br />
DESIGN AND CONSTRUCTION OF DIAGNOSTIC CHIPS FOR CANCERS<br />
Anna Czernicka and Paweł Kafarski<br />
Department of Bioorganic Chemistry Faculty of Chemistry,Wrocław University of Technology,Wybrzeże.<br />
Wyspiańskiego 27, 50-370 WROCŁAW; Poland<br />
In the past few years, miniaturized and parallel assay systems, especially microarraybased<br />
analyses have shown its great potential in basic research, drug discovery and diagnostics. The<br />
development of these tools was possible due to progress in the area referred as chip technology.<br />
The aim of the presented studies it is to construct prototype organophosphorous diagnostic chips<br />
composed of arrays of peptide derivatives covalently bound to the glass and/or filter paper surface.<br />
These peptides might serve as fluorogenic substrates or inhibitors of marker proteins being<br />
overproduced during cancer development. Thus, by manipulating the chemical structure of the<br />
aminophosphonate and the amino acid composition of the peptide it is possible to design and<br />
synthesize libraries reacting differently with healthy and tumorous cell extracts. The first step of<br />
implementation this project is synthesis of diaryl or dialkyl Z-aminophosphonates, witch could be<br />
applied for qualitative and quantitative determination of proteolytic activity of certain tumor tissues<br />
in comparison with healthy ones. The composition of these libraries was strongly dependent on<br />
choice and properties of fluorogenic groups used as features of presumable inhibitors and substrates<br />
of proteases. This is because immobilization of these probes is far easier than production of<br />
sensitive fluorescence change. The fluorogenic groups were synthesized by application of several<br />
methods. Among them unusual application of Suzuki coupling in organophosphorus chemistry was<br />
proposed.<br />
Also the preliminary evaluation of efficiency of these compounds using thyroid cancer cell<br />
extracts will be shown<br />
277
O-62<br />
FACTORS THAT MAY PREDICT CLINICAL POTENCIES OF<br />
NITROGEN-CONTAINING BISPHOSPHONATES; NOVEL METHODS DISSOCIATE<br />
ENZYME- AND HYDROXYAPATITE-BINDING AFFINITIES<br />
Z.Xia 1 ,J.Dunford 1 ,M.A.Lawson 1 ,J.T.Triffitt 1 ,B.L.Barnett 2 ,C.Roze 3 ,B.Kashemirov 3 ,C.E.McKenna 3 , F.H.Ebetino 2 and<br />
R.G.G. Russell<br />
1 The Oxford University Institute of Musculoskeletal Sciences, The Botnar Research Centre, Nuffield Orthopaedic<br />
Centre, Oxford,OX3 7LD, UK; 2 New Drug Development, Procter and Gamble Pharm, Cincinnati OH, USA, 3 Chemistry<br />
Department, University of Southern California, Los Angeles, CA<br />
Bisphosphonates (BPs) have pharmacological potencies that are dependent on both the binding<br />
affinities for bone mineral and inhibitory effects on the cellular activities of the major<br />
bone-resorbing cells, the osteoclasts. The latter cellular effects are mediated in the case of<br />
nitrogen-BPs by selective targeting of the enzyme Farnesyl Diphosphate Synthase (FDPS). The<br />
extent to which each factor determines the functional properties of individual BPs can be better<br />
defined by assays for FDPS activity and mineral binding. This study has employed a recently<br />
developed mineral binding assay that is highly reproducible and based on ceramic hydroxyapatite<br />
(HAP) column chromatography. Inhibitory potencies of individual BPs on FDPS were measured by<br />
kinetic investigations. These studies indicate that the nitrogen containing bisphosphonates (N-BPs)<br />
inhibit the enzyme by initially competing with the substrate geranyl pyrophosphate and<br />
subsequently bind in a slow tight manner. From the use of a variety of N-BPs, it is shown that that<br />
the rank order for inhibitory potencies on FDPS is independent of the respective mineral binding<br />
affinities to HAP (Table 1). Major determinants of mineral binding are confirmed to be the P-C-P<br />
group, an OH on the carbon, and the structure and orientation of a second nitrogen containing<br />
substituent on the carbon. For the inhibition of FDPS the PCP groupis also essential (via Mg 2+<br />
binding), together with specific orientation of the N in the R2 group relative to the enzyme binding<br />
pocket. These results are aided by molecular modelling to illustrate how different 3-D<br />
configurations of the nitrogen containing substituents in the different BPs, in relation to the overall<br />
BP structures, can account for the observed FDPS inhibition and HAP-binding characteristics.<br />
In conclusion, the chemical structures that determine independently the FDPS inhibition and<br />
mineral binding activities of N-BPs are distinctive and contribute separately to the overall observed<br />
clinical potencies of N-BPs in vivo.<br />
N-BPs Retention time (min, mean±SE) Ki app (nM)<br />
Risedronate-R1 Fluorine 5.93±0.11 11.5<br />
Risedronate-R1Bromine 5.83±0.17 220<br />
Risedronate-R1 Chlorine 5.93±0.07 47.7<br />
NE97220 ( a 3-Me 2-pyridyl aminomethane BP) 6.53±0.15 6.3<br />
NE58022 (Phenyl analogue of Ris) 7.77±0.15 293<br />
Homorisedronate (NE58051) 9.67±0.09 218<br />
Risedronate 9.97±0.09 2.0<br />
Zoledronate 12.53±0.06 0.4<br />
278
O-63<br />
NOVEL ORGANOPHOSPHORUS INHIBITORS OF GLUTAMINE SYNTHETASE<br />
Łukasz Berlicki 1 , Agnieszka Grabowiecka 1 , Giuseppe Forlani 2 and Paweł Kafarski 1<br />
1 Department of Bioorganic Chemistry Wrocław University of Technology,Wybrzeże Wyspiańskiego 27, 50-370<br />
Wrocław; POLAND 2 Department of Biology, University of Ferrara,Via L. Borsari 46, 44100 Ferrara, ITALY<br />
Glutamine is one of the most important intermediates in nitrogen metabolism in cell.Glutamine<br />
amide nitrogen atom is utilized as a donor for biosynthesis of several crucial metabolites — amino<br />
acids, nucleic acids and aminosugars [1] . Thus, the enzyme which catalyses the synthesis of<br />
glutamine from glutamate and ammonium ion — glutamine synthetase (E.C. 6.3.1.2, GS) is of high<br />
importance for nitrogen metabolism. Inhibitors of glutamine synthetase exhibit interesting<br />
applications both in medicine and agriculture. It was proven that they could be efficient<br />
antituberculosis drugs by inhibiting the growth of the pathogen — Mycobacterium tuberculosis [2] .<br />
Preliminary data suggest also that inhibitors of GS could be useful in cancer therapy [3] . On the other<br />
side, one of the most potent inhibitors of GS — phosphinothricin (1) is commercially available total<br />
herbicide. The inhibition of GS in plant causes accumulation of toxic ammonia [4] . Thus discovery<br />
of novel, potent and selective GS inhibitors is of high interest.<br />
Rational discovery of novel inhibitors should be based on the knowledge on the structure of<br />
active site, mechanism of the reaction and interactions between substrates, products and inhibitors<br />
with protein. Thus, we have docked known inhibitors of GS to its active site and analyzed important<br />
structural and electronic features of these compounds [5] .Then, using LUDI program, several new<br />
inhibitors were designed. After evaluation of their synthetic accessibility, we have chosen five<br />
structures and synthesized them in enantiomerically pure form. Kinetic measurements showed that<br />
obtained inhibitors rank between most active GS inhibitors (Ki = 0.59 μM was found for compound<br />
(2)) [6] . Analysis of these data allowed to design the next generation of GS inhibitors with additional<br />
hydroxyl group in gamma position (structure (3) is the representative example). Selected<br />
compounds were synthesized and evaluated for their biological activity.<br />
References<br />
[1]. Purich, D.L. Adv. Enzymol. 1998, 72, 9.<br />
[2]. Harth, G.; Horwitz, M.A. Infect. Immun. 2003, 71, 456.<br />
[3]. Rotoli, B.M.; Uggeri, J.; Dall'Asta, V.; Visigalli, R.; Barilli, A.; Gatti, R.; Orlandini, G.; Gazzola, G.C.; Bussolati, O.<br />
Cell Physiol. Biochem. 2005, 15, 281.<br />
[4]. Wild, A.; Sauer, H.; Rühle, W. Z. Naturforsch, 1987, 42, 263.<br />
[5]. Berlicki, Ł.; Kafarski, P. Bioorg. Med. Chem. 2006, 14, 4578.<br />
[6]. Berlicki, Ł.; Obojska, A.; Forlani, G.; Kafarski, P. J. Med. Chem. 2005, 48, 6340.<br />
[7]. Forlani, G.; Obojska, A.; Berlicki, Ł.; Kafarski, P. J. Agric. Food Chem. 2006, 54, 796.<br />
279
O-67<br />
INVESTIGATIONS INTO THE OXIDATIVE STABILITY OF HYDROXYMETHYL- AND<br />
BIS(HYDROXYMETHYL)PHOSPHINES<br />
D. V. Griffiths and H. J. Groombridge.<br />
School of Biological and Chemical Sciences, Queen Mary, University of London, London, E1 4NS, UK.<br />
It has been reported that chelate systems containing the bis(hydroxymethyl)phosphine unit,<br />
(HOCH2)2PR, display an unusually high level of oxidative stability. [1] As part of an ongoing<br />
programme to develop novel hydrophilic ligands for medical imaging, we were interested to<br />
ascertain whether this oxidative stability was an inherent feature of the<br />
bis(hydroxymethyl)phosphine groups or simply a function of the conformations adopted by these<br />
specific chelate systems. We also wished to establish whether the hydroxymethylphosphine unit,<br />
HOCH2PRR’, would confer a similar level of oxidative stability to that reported for the<br />
bis(hydroxymethyl) system.<br />
We have investigated the preparation of benzylethyl(hydroxymethyl)phosphine 1 and<br />
benzylbis(hydroxymethyl)phosphine 2, as model systems, in order to assess their oxidative stability<br />
compared with the trialkyl phosphine, benzyldiethylphosphine 3. These studies indicated that<br />
neither of the hydroxymethylphosphine centres in 1 and 2 displayed a significantly enhanced level<br />
of oxidative stability. The unusually high stability of hydroxymethylphosphine chelates previously<br />
reported would therefore appear to arise from the overall structure of these systems rather than the<br />
intrinsic stability of the hydroxymethylphosphine centres. In addition, the synthesis of the<br />
hydroxymethylphosphines was complicated by the formation of hemiacetal derivatives e.g. 4 and 5<br />
as well as other by-products e.g. 6 and 7. This is likely to limit the usefulness of the<br />
hydroxymethylphosphines in commercial radiopharmaceutical applications.<br />
P<br />
O OH P<br />
4<br />
OH<br />
5<br />
P +<br />
OH<br />
OH<br />
OH<br />
6 7<br />
280<br />
O<br />
P<br />
O<br />
OH<br />
O OH<br />
Reference<br />
[1].K. V. Katti, K. Raghuraman, N. Pillarsetty, W. A. Volkert, S. S. Jurisson and T. J. Hoffman, Technetium, Rhenium<br />
and Other Metals in Chemistry and Nuclear Medicine 6, 69-72, Eds., M. Nicolini, G. Bandoli and U. Mazzi, SGE<br />
Editorali, Padova, Italy, 2002.<br />
OH<br />
OH
O-69<br />
ORGANOPHOSPHONATE INHIBITORS OF CATHEPSINS<br />
Paweł Kafarski<br />
Departament of Bioorganic Chemistry, Faculty of Chemistry, Wrocław University of Technology, Wybrzeże<br />
Wyspiańskiego 27, 50-370 Wrocław, Poland<br />
Lysosomal cysteine proteases, generally known as the cathepsins, play an important role in many<br />
physiological processes such as protein degradation, antigen presentation, bone resorption and<br />
hormone processing. They have also been implicated in many pathological processes including<br />
tumor invasion and metastasis.<br />
For several years we have been engaged in the design and synthesis of phosphono- and<br />
phosphinopeptides as inhibitors of chosen proteases, mostly of metalloproteases. These compounds<br />
are considered to be the closest analogues of the high energy tetrahedral transition-state of the<br />
amide bond hydrolysis. However, similar approach directed towards cysteine proteases failed and<br />
organophosphonates are widely believed as being weak inhibitors of these enzymes.<br />
Here we describe two approaches leading to reasonable inhibitors of cathepsin C and related<br />
cathepsins. The first one relays on construction of tripeptide mimetics 1, which appeared to be<br />
moderate inhibitors of cathepsin C. Although designed as transition state analogues, they<br />
surprisingly exhibited non-competitive mode of binding to the enzyme. Differences in kinetics of<br />
C-terminal acids and esters have been additionally observed<br />
H 2N<br />
O<br />
H<br />
N<br />
O OH<br />
P<br />
R<br />
1<br />
COOR'<br />
281<br />
H 2N<br />
O<br />
H<br />
N<br />
R<br />
2<br />
OH<br />
PO 3R' 2<br />
The second approach based on synthesis of dipeptide mimetics 2 containing C-terminal<br />
phosphonate analogues of bestatin. These compounds appeared to be a new class of very promising<br />
inhibitors of cathepsin C. They appeared to be reversible, competitive and slow binding inhibitors,<br />
with the equilibrium in the inhibitor binding reached within several minutes after addition of<br />
cathepsin C to the mixture of inhibitor and substrate. To our best knowledge the binding affinities of<br />
the two strongest inhibitors towards the enzyme rank amongst the highest, if considering all<br />
low-molecular compounds. Their analogues also appeared to rank amongst the best inhibitors of<br />
other cysteine proteases, namely of papain and cathepsins B and K. Binding mode of these<br />
compounds was studied by means of molecular modelling of the inhibitor-protein interactions by<br />
application of the method implemented in the Ludi program.
O-70<br />
SYNTHESIS AND DENTAL ASPECTS OF<br />
1,3-BIS(METHACRYLAMIDO)PROPANE-2-YL DIHYDROXYPHOSPHATE<br />
F. Zeuner, N. Moszner and J. Angermann<br />
voclar Vivadent AG, Research & Development FL-9494 Schaan/Liechtenstein<br />
Phosphoric acid monoesters 1 and 2 of hydroxyalkyl methacrylates are favourable as components<br />
for dentin adhesives. Due to their acidity they are able to remove the smear layer on dentin and<br />
achieve a strong bond between the restorative material and the tooth substance. However, a<br />
disadvantage of these polymerizable phosphoric acids is their low hydrolytic stability. This problem<br />
should be overcome with monomer 3 containing more hydrolytically stable bonds between the<br />
polymerizable methacrylic group and the strong acidic phosphorus group:<br />
Moreover, in comparison to 1 and 2, compound 3 should have improved polymerizability. The<br />
presentation describes the synthesis, characterization and dental aspects like radical polymerization,<br />
hydrolytic stability, acidity and adhesive properties of the new monomer 3.<br />
282
O-71<br />
NEW EFFICIENT SYNTHESIS OF 2-SUBSTITUTED<br />
BENZOTHIENO[3,2-d]PYRIMIDIN-4(3H)-ONES VIA AN IMINOPHOSPHORANE<br />
Sheng-Zhen Xu, Yang-Gen Hu, Ming-Wu Ding*<br />
Key Laboratory of Pesticide & Chemical Biology of Ministry of Education, Central China Normal University, Wuhan,<br />
430079, P. R. China<br />
Thienopyrimidine are of great importance because of their significant antifungal and antibacterial<br />
activities, as well as their good anticonvulsant and angiotensin or H1 receptor antagonistic<br />
activities. 1 Here we wish to report a new efficient synthesis of benzothieno[3,2-d]<br />
pyrimidin-4(3H)-ones.<br />
Iminophosphorane 1 reacted with aromatic isocyanates to give carbodiimides 2, 2 which were<br />
allowed to react with secondary amines, phenols or ROH in the presence of catalytic amount of<br />
potassium carbonate or RO - Na + to give 2-substituted benzothieno[3,2-d] pyrimidin-4(3H)-ones 4 in<br />
good yields.<br />
S<br />
1<br />
COOEt<br />
N=PPh 3<br />
ArNCO<br />
S<br />
2<br />
COOEt<br />
N=C=NAr<br />
HY<br />
The reaction of carbodiimides 2 with primary amine RNH2 (R ≠ H, Me) in the presence of<br />
sodium ethoxide produced selectivly one of the regioisomer 6 via base catalytic cyclization<br />
mechanism. However, another regioisomers 7 were obtained as RNH2 (R=H, Me) were used in the<br />
absence of sodium ethoxide, via a direct cyclization mechanism.<br />
S<br />
2<br />
S<br />
COOEt<br />
N=C=NAr<br />
N<br />
O<br />
N<br />
7<br />
(R = H, Me)<br />
R<br />
NHAr<br />
RNH2<br />
283<br />
S<br />
S<br />
5<br />
S<br />
N<br />
3<br />
6<br />
COOEt<br />
NHAr<br />
Y<br />
EtONa<br />
N<br />
COOEt<br />
N<br />
(R = Et, Pr, Bu, etc)<br />
References:<br />
1. Chambhare, R. V.; Khadse, B. G.; Bobde, A. S.; Bahekar, R. H. Eur. J. Med. Chem. 2003, 38, 89.<br />
2. Braese, S.; Gil, C.; Knepper, K.; Zimmermann, V. Angew. Chem. Int. Ed. 2005, 44, 5188.<br />
N<br />
NHAr<br />
NHR<br />
O<br />
Ar<br />
NHR<br />
S<br />
4<br />
N<br />
O<br />
N<br />
Y<br />
Ar
P-3<br />
CALIXARENE METHYLENEBISPHOSPHONIC ACIDS: ALKALINE PHOSPHATASE<br />
INHIBITION AND DOCKING STUDIES<br />
A. Vovk a , V. Kalchenko b , O. Muzychka a , V. Tanchuk a , I. Muravyova a ,<br />
A. Shivanyuk b , S. Cherenok b and V. Kukhar a<br />
a Institute of Bioorganic Chemistry and Petrochemistry, NAS of Ukraine,02660, Kyiv-94, Ukraine.<br />
b Institute of Organic Chemistry, NAS of Ukraine,02094, Kyiv-94, Ukraine<br />
Calix[4]arenes bearing one or two methylenebisphosphonic acid fragments were characterized as<br />
efficient calf intestine alkaline phosphatase inhibitors [1]. In this study, kinetics of interaction of<br />
these compounds with alkaline phosphatase isoenzymes are analysed.<br />
Calix[4]arene bis-methylenebisphosphonic acid 1 displayed stronger inhibition of alkaline<br />
phosphatase from bovine intestine mucosa than calix[4]arene methylenebisphosphonic acid 2. At<br />
the same time these macrocyclic compounds showed almost identical affinities to bovine kidney<br />
isoenzyme. For elucidation of the molecular mechanism of inhibition the tested compounds 1 and 2<br />
were docked computationally to the active site of E. Coli alkaline phosphatase. On the basis of<br />
results obtained the possible role of functionally important amino acid residues in formation of<br />
enzyme-inhibitor complex at the active centre of alkaline phosphatase is discussed.<br />
References<br />
[1] A.I. Vovk, V.I. Kalchenko, S.A. Cherenok, V.P. Kukhar, O.V. Muzychka,M.O. Lozynsky. Org. Biomol. Chem.<br />
2004, 2, 3162-316<br />
284
P-5<br />
α-(N-BENZYLAMINO)BENZYLPHOSPHONIC ACIDS: STEREOSELECTIVITY OF<br />
BINDING TO PROSTATIC ACID PHOSPHATASE<br />
O.I. Kolodiazhnyi, A.I.Vovk, I.M. Mischenko, S.V. Tanchuk, G.A. Kachkovskyi, S.Yu. Sheiko, V.P. Kukhar<br />
Institute of Bioorganic Chemistry and Petrochemistry, National Academy of Sciences of Ukraine, Murmanskaia 1, Kyiv,<br />
UKRAINE E-mail: oikol123@rambler.ru<br />
On the previous ICPC we have reported the asymmetric synthesis of (R)- and<br />
(S)-α-(N-benzylamino)-benzylphosphonic acids and (1R2S)-,(1S2R)-(N-phenylethyl)amino]<br />
arylmethylphosphonic acids (1a,b and 2a,b) of high enantiomeric purity.<br />
HO<br />
HO<br />
O<br />
P Ar -<br />
+<br />
H NH2CH(Me)Ph CI<br />
(RS)-1a, (RS)-2a<br />
285<br />
HO<br />
HO<br />
Ar = Ph (1a,b); Ar =4-C 6 H 4 OMe (2a,b)<br />
O<br />
P Ar<br />
CI<br />
-<br />
+<br />
H NH CH(Me)Ph<br />
2<br />
(SR)-1b, (SR)-2b<br />
Continuing the studies of properties of these compounds, we have tested the activities of<br />
enantiomerically pure α-(N-benzylamino)benzylphosphonic acids against human prostatic acid<br />
phosphatase[1-3] -α-(N-Benzylamino) benzylphosphonic acids have been shown to be a potent<br />
inhibitors exhibiting high specificity toward acid phosphatase from human prostate [1] . As expected,<br />
(R)-α-(N-benzylaminobenzylphosphonic acid demonstrated higher affinities for enzyme than<br />
(S)-enantiomer. However, (1R2S)-phenyl- [1-(phenylethyl)amino]methyl-phosphonic acid 1a was<br />
found to be 40 fold weaker inhibitor than its (1S2R)-analogue 1b. Experimentally tested phosphonic<br />
acids 1a,b and 2a,b have been docked computationally to the active centre of this enzyme.<br />
Implications of theoretical results to the mechanisms of stereospecificity of inhibition of prostatic<br />
acid phosphatase by α-benzylaminobenzylphosphonic acids are discussed.<br />
References<br />
[1] S.A. Beers, C.F. Schwender, D.A. Loughney, E. Malloy, K. Demarest, J. Jordan. Bioorg. Med. Chem. 1996, 4,<br />
1693-1701.<br />
[2] O.I. Kolodiazhnyi, S. Sheiko, I. Guliaiko, E. Grishkun Abstracts of XV International conference on phosphorus<br />
chemistry. Sendai, Japan. 2001. P. 211; Phosphorus, Sulfur and Silicon and related elements (USA) 2002, 177,<br />
2269-2270.<br />
[3] G.A. Kachkovskii, N.V. Andrushko, S.Yu. Sheiko, and O.I. Kolodiazhnyi. Russ. J. Gen. Chem. 2005, 11, 1735-1743.
P-11<br />
GERANYL AND FARNESYL BISPHOSPHONATES INHIBIT PROTEIN<br />
GERANYLGERANYLATION THROUGH ggpp DEPLETION<br />
Andrew J. Wiemer, Huaxiang Tong, David F. Wiemer, Raymond J. Hohl.<br />
University of Iowa. E-mail: raymond-hohl@uiowa.edu<br />
The proliferation of many human cancers is regulated in part by the Ras superfamily of small<br />
GTPases. The function of these proteins is dependent upon their post-translational linkage to<br />
either farnesyl or geranylgeranyl groups that are derived from their respective isoprenoid<br />
pyrophosphates. Nitrogenous bisphosphonates, which are used clinically to treat osteoporosis,<br />
also deplete cells of isoprenoid pyrophosphates leading to diminished protein isoprenylation<br />
although the relationship of the clinical activity to this effect is not completely clear. The clinical<br />
nitrogen-containing bisphosphonates diminish both farnesylation and geranylgeranylation. Our<br />
lab has designed and synthesized a series of novel isoprenoid bisphosphonates (e.g. the digeranyl<br />
bisphosphonate 1) that impacts protein geranylgeranylation but not farnesylation (Bioorg Med<br />
Chem, 2006, 14:4130-6).<br />
This current structure-function study outlines the biological activity of various geranyl- and<br />
farnesyl-containing bisphosphonates and their olefin isomers. As with digeranyl bisphosphonate,<br />
cells treated with these analogs are depleted of intracellular geranylgeranyl pyrophosphate (GGPP),<br />
not farnesyl pyrophosphate (FPP), and protein geranylgeranylation is diminished with no inhibition<br />
of protein farnesylation. All three combinations of olefin isomers of digeranyl bisphosphonate are<br />
biologically active with little loss of potency. Interestingly, of the four possible mono farnesyl<br />
bisphosphonate isomers only those containing the (3E)-olefin are biologically active. This data<br />
further supports our previous studies that show geranyl-containing bisphosphonates inhibit<br />
geranylgeranylation, and shows for the first time that farnesyl containing bisphosphonates are also<br />
biologically active.<br />
(1)<br />
Reference<br />
Shull LW, Wiemer AJ, Hohl RJ, Wiemer DF. Synthesis and biological activity of isoprenoid bisphosphonates.<br />
Bioorganic and Medical Chemistry, 2006, 14:4130-6.<br />
286
P-39<br />
PREPARATION OF NEW [1,4,2]-OXAZAPHOSPHINANES: POTENTIALLY<br />
ANTIDEPRESSIVE AGENT<br />
David Virieux, Jean-Noël Volle, and Jean-Luc Pirat<br />
Laboratoire d’Architectures Moléculaires et Matériaux Nanostructurés ; Institut Charles Gerhardt,UMR 5253 ENSCM,<br />
8 rue de l’Ecole Normale 34296, Montpellier cedex 5, France<br />
Recently, our laboratory developed an original and diasteroselective strategy for the preparation<br />
of new phosphinylated heterocycles: 2-aryl-[1,4,2]-oxazaphosphinanes 1. [1-5] These compounds<br />
might be potentially of a great importance for agrochemical and pharmaceutical applications. [6,7] The<br />
strategy adopted for the formation of these heterocycles 1 consists in a two step procedure: a<br />
diastereoselective addition-cyclization reaction from methylphosphinate and the corresponding<br />
-hydroxy-imine, followed by a pallado-catalyzed arylation.<br />
R OH<br />
H 2PO 2Me<br />
Ph N Ph<br />
R = H ou Ph<br />
O<br />
R OH H<br />
* P<br />
OCH3 *<br />
Ph N Ph<br />
H<br />
t-BuOK<br />
THF/toluene<br />
O O<br />
R O H Ar-X R O Ar<br />
P Pd°(cat)<br />
P<br />
Ph N Ph<br />
H<br />
287<br />
Ph N Ph<br />
H<br />
1<br />
Ar = C 6H 5, p-MeO-C 6H 4, p-Br-C 6H 4, m-Cl-C 6H 4,<br />
3,5-F 2-C 6H 4, 2-pyridine and 2-thiophene<br />
Here, we propose the preparation of new oxazaphosphinanes 3 as potential antidepressive agents<br />
(analogs to hydroxybupropion). Hydroxybupropion is a metabolite formed from well-known<br />
Bupropion drug (Wellbutrin®), twice more selective toward the noradrenergic system than<br />
Bupropion itself.<br />
Me<br />
Me<br />
O<br />
P<br />
O<br />
N<br />
H<br />
R'<br />
Me<br />
R' = H or Me, 3<br />
Cl<br />
Me<br />
Me<br />
O OH<br />
N<br />
H<br />
Me<br />
Hydroxybupropion<br />
Cl<br />
Me<br />
O<br />
Me<br />
Me N<br />
H<br />
Me<br />
Cl<br />
Bupropion (Wellbutrin )<br />
Reference<br />
[1] Cristau, H.-J.; Monbrun, J.; Tillard, M.; Pirat, J.-L. Tetrahedron 2003, 44, 3183-3187.<br />
[2] Cristau, H.-J.; Pirat, J.-L.; Virieux D.; Monbrun, J.; Ciptadi C.; Bekro, Y.A. J. Organomet. Chem. 2005, 690,<br />
2471-2481.<br />
[3] Pirat, J-L.; Monbrun, J.; Virieux, D.; Volle, J.-N.; Tillard, M.; Cristau, H.-J. J. Org. Chem. 2005, 70,<br />
7035-7041.<br />
[4] Pirat, J.-L.; Monbrun, J.; Virieux, D.; Cristau, H.-J. Tetrahedron 2005, 61, 7029-7036.<br />
[5] Volle, J.-N.; Virieux, D.; Starck, M.; Monbrun, J.; Clarion, L.; Pirat, J.-L. Tetrahedron : Asymmetry 2006, 17,<br />
1402-1408.<br />
[6] Zhou, J.; Qiu, Y.; Feng, K.; Chen, R. Synthesis 1999, 1, 40-42.<br />
[7] Wang, B.; Miao, Z.; Huang, Y.; Chen, R. Heteroatom Chem. 2007, 18, 65-69.<br />
R
P-40<br />
ANTITUMOR EFFECT OF BETAINE AND ITS IMPACT ON THE PHOSPHORYLATION<br />
PROCESS OF RATS BEARING S180<br />
Ji Yu-Bin 1 , Zhang Yu-Jin 2<br />
1 Research center on Life science and environmental science of Harbin University of commerce,Harbin 150076, China;<br />
2.<br />
Postdoctal Research of the institute of Materia Medica of Harbin University of commerce<br />
Helongjiang Harbin 150076, China<br />
Objective: to study the anti-tumor activity of betaine and its effects on the phosphorylation<br />
process of rats bearing s180. method: based on rats bearing s180 model, tumor inhibition rate,the<br />
enzyme activity of acp and alp in serum are chosen as indexes, which are determined by the kit tests.<br />
Results: the tumor inhibition rate of betaine of different dosages are 39.8%、25.7%、17.7%<br />
respectively, betaine of high dosage can remarkably increase the activity of acp、alp, p
P-54<br />
SYNTHESIS AND SEPERATION OF L-TRYTOPHAN OLIGO-PEPTIDES ASSISTED BY<br />
PHOSPHORUS OXYCHLORIDE<br />
Li Ma 1 ,Hai-ping Ren 1 ,Kui Lu 1* ,Yu-fen Zhao 2<br />
1 School of Chemistry and Chemical Engineering, Henan University of Technology, Zhengzhou 450052 china; 2<br />
Department of Chemistry, Xiamen University, Xiamen 361005 China<br />
We have demonstrated that α-amino acids could be assembled into oligo-peptides with the<br />
assistance of inorganic phosphorus [1] . the reaction products can be seperated by reversed phase<br />
high-performance liquid chromatography(rplc) [2] . Similar results were obtained in the reaction of<br />
l-trytophan (l-trp) and phosphorus oxychloride. Compared with different experimental condition ,<br />
the results showed that the proper condition of direct synthesis was the molar ratio of l-trp and<br />
pocl3 of 1 to 1, reaction temperature of 30℃, reaction time of 15 mins and in tetrahydrofuran as<br />
solvent. Through the electrospray ionization mass spectrometry (esi-ms), a series of mass peaks<br />
corresponding to oligo-peptides of l-trp were observed .the dipeptide trp-trp(m/z=391), as well as<br />
cyclo-dipeptide cyclo-trp-trp (m/z=373) were purified by reversed rplc.<br />
Scheme 1 showed the RPLC of the reaction products<br />
This work was financial supported by National Nature Science Foundation of<br />
China(No.20272055, 20572016) , Henan Province Science Foundation for Prominent Youth<br />
(No.0312000900) and Office of Education of Henan Province (No. 2006KYCX017,<br />
200510459015).<br />
References<br />
[1] Lu, K.; Liu, Y.; Zhou, N.; Chen, Y.; Feng, Y.-P. ; Guo, X.-F.; Chen, W.; Qu, L.-B.; Zhao, Y.-F.<br />
Acta Chim. Sinica 2002,60,372 (in Chinese)<br />
[2] Quan Bai, Xiao-juan Ge, Xing-du Gen. The purification of peptide in preparative scale with<br />
reversed phase high-performance liquid chromatography. Chinese Journal of analytical<br />
chemistry.2002,30(9),1126~1129.(in Chinese )<br />
289
P-66<br />
THIOUREIDO DERIVATIVES OF METHYLENEBISPHOSPHONIC ACID AS<br />
POTENTIAL INHIBITORS OF ALKALINE PHOSPHATASES<br />
M. Lozynsky a , A. Vovk b , A. Chuiko a , L. Kononets b , V. Tanchuk b , I. Muravyova b , V. Kukhar b<br />
a b<br />
Institute of Organic Chemistry, NAS of Ukraine, 02094, Kyiv-94, Ukraine; Institute of Bioorganic Chemistry and<br />
Petrochemistry, NAS of Ukraine,02660, Kyiv-94, Ukraine<br />
New substituted thioureidobisphosphonates were synthesized through the reaction of<br />
aminomethylenebisphosphonic acid with corresponding isothiocyanates. The compounds obtained<br />
were evaluated for their inhibitory activity on alkaline phosphatases in vitro.<br />
Introduction of thioureido fragment in a structure of methylenebisphosphonic acid results in<br />
improvement of inhibition of alkaline phosphatases from bovine intestine mucosa and human<br />
placenta. Thioureidobisphosphonates were shown to have inhibition constants in the micromolar to<br />
low millimolar range. The affinity of alkaline phosphatase from bovine intestine mucosa for<br />
1-(3-phenylthioureido)methylenebisphosphonate as the most potent inhibitor is approximately an<br />
order of magnitude higher than for 1-(3-аlkylthioureido)methylenebisphosphonate with methyl,<br />
ethyl, tert-butyl or cyclohexyl substituents. 1-(3-Phenylthioureido)methylenebisphosphonate was<br />
found to be better inhibitor than its derivative with substituents in benzene cycle. The results<br />
suggest that the presence of thione group in the structure of inhibitor is also important for inhibitory<br />
action since effect of 1-(3-phenylureido)methylenebisphosphonate on alkaline phosphatase activity<br />
is considerably lower. To elucidate the binding modes several inhibitors were docked in the active<br />
site of alkaline phosphatase from human placenta. The results obtained reveal that hydrogen bonds<br />
play an important role in the interaction between thioureidobisphosphonate and the enzyme.<br />
N<br />
H 2<br />
PO 3 H 2<br />
PO 3 H 2<br />
R-NCX<br />
NEt 3<br />
R<br />
N<br />
H<br />
X<br />
N<br />
H<br />
PO 3 H 2<br />
PO 3 H 2<br />
290<br />
. n NEt 3<br />
AcONa<br />
AcOH<br />
R<br />
N<br />
H<br />
X<br />
N<br />
H<br />
PO 3 HNa<br />
X=S, O; R=Ph<br />
X=S; R=Alk, Ar<br />
PO 3 HNa
P-67<br />
PHOSPHORYL SUBSTITUTED 3,5-BIS(ARYLIDENE)-4-PIPERIDONES POSESSING<br />
HIGH ANTITUMOR- ACTIVITY<br />
M.V. Makarov a , I.L. Odinets a , O.I. Artyushin a ,E.Yu. Rybalkina b , K.A. Lyssenko b , T.V. Timofeeva c , and M.Yu. Antipina, c<br />
a b<br />
A.N.Nesmeyanov Institute of Organoelement Compounds RAS, Moscow, Russia; Institute of Carcinogenesis, Blokhin<br />
Cancer Research Center, RAMS, Moscow, Russia; c New Mexico Highlands University, Las Vegas, USA<br />
3,5-Bis(arylidene)-4-piperidones (and related compounds) 1 possess anticancer activity [1a] and<br />
reveal antioxidant properties. [1b] Some of these compounds are also fluorescent that makes possible<br />
to use them as dyes for tracing their cellular pathways during chemotherapy and as agents for<br />
photodynamic therapy. [2] The important way to regulate the bioavailability and drug delivery of<br />
these compounds to target organs is an introduction of different substitutes R to the N-atom of a<br />
piperidone moiety. Taking into account that phosphorus-containing groups are prospective as such<br />
modifiers we would like to discuss the synthesis and “structure-activity-fluorescence properties”<br />
relationship of phosphorylated arylidenepiperidones.<br />
N-phosphorylated compounds 3 were obtained via direct phosphorylation by phosphorus(IV)<br />
acid chlorides. Derivatives 4 with elongated alkylene-phosphoryl linker could be synthesized only<br />
by condensation of aldehydes with phosphorylated N-alkylpiperidones as alkylation of the<br />
precursor 2 with alkyl halides afforded surprisingly quaternary salts 5 as the only reaction products.<br />
Compounds 3-5 and their pharmaceutically acceptable salts demonstrated high activity against<br />
human lung carcinoma cell line A549 with IC50 values in the range of 0.3-15.0 M.<br />
Financial support: Russian Basic Research Foundation (05-03-32692).<br />
O<br />
N<br />
Y<br />
+<br />
H<br />
C<br />
O<br />
O<br />
R1 =R2 =OCH2CF3; OPh: R1 =Me, R2 Me2N O<br />
N<br />
P<br />
R<br />
NMe2 =OPh<br />
2<br />
R1<br />
3<br />
iii<br />
Z<br />
Z<br />
1) i; 2) ii<br />
O<br />
N<br />
H<br />
2<br />
291<br />
Z<br />
O<br />
N<br />
CH2X<br />
Z N Hal<br />
H2n+1Cn CnH 2n+1<br />
5<br />
i: HCl/AcOH or EtOH; ii: NaHCO 3/H 2O; iii: R 1 R 2 P(O)Cl/Et 3N/THF; iv: n-C nH 2n+1Hal/K 2CO 3/CH 3CN; n=1-4<br />
Y=H<br />
Y=CH 2X<br />
Z<br />
iv<br />
O<br />
4 X = (CH2) 2P(O)(OEt) 2:<br />
Z = F, NO2, NMe2 n=1-4<br />
References<br />
[1]. a) Dimmock, J. R. at al. Eur J Med Chem, 2002, 37(10), 813. b) K.M.Yisef, M.A.El-Sherbeny,<br />
Arch.Pharm.Chem.Lif Sci, 2005, 338, 181<br />
[2] Nesterov, N. N. at al., Acta Cryst., 2003, C59, 605.<br />
Z<br />
Z
P-77<br />
NEW POLYAMINES PHOSPHORAMIDATE VECTORS FOR GENE THERAPY<br />
Mathieu Mével a , François Lamarche a , Jean-claude Clément a , Jean-jacques Yaouanc a , Laure Burel a , Philippe Giamarchi a ,<br />
Tristan Montier b , Pascal Delépine b , Pierre Lehn b , Paul-Alain Jaffrès a , Claude Férec b .<br />
a- CEMCA, UMR CNRS 6521, Faculté des Sciences et Techniques, Université de Bretagne Occidentale, 6 avenue Le<br />
Gorgeu, 29238 Brest, (France) ; b-Unité INSERM 613, Institut de Synergie des Sciences et de la Santé, Université de<br />
Bretagne Occidentale, avenue Foch, 29609 Brest cedex 2 (France)<br />
DNA delivery into cells can be achieved by using synthetic vectors having the capacity to<br />
compact DNA to form a cationic lipoplex which will have the suitable properties to go across the<br />
cell membrane. The next step, will consists to liberate the DNA plasmid into the cyctoplasm<br />
followed by its migration up to perinuclear region and finally across the nuclear membrane. The<br />
chemical structure of the synthetic vectors can be classified into two categories: cationic polymers<br />
(PEI, …) and cationic lipids. In our group, cationic lipids possessing structure inspired from<br />
phospholipids present into membranes have been synthesized and tested for in vivo and in vitro<br />
essays [1, 2, 3]. Of note, many cationic polymers (e.g. PEI) or cationic lipids (DOGS, DPPES, DOSPA),<br />
identified by their transfection efficiency, are characterised by the presence of several amino<br />
functional groups on their backbone. We endeavour the synthesis of cationic lipids having a<br />
phosphoramidate lipidic moiety and a polyamino polar headgroup. For this study, the polar<br />
headgroup is formed by the spermine as depicted below.<br />
Reference<br />
[1 ]J.C. Clément, P. Delépine, H des Abbayes, C, Férec, K. Le Ny, T. Montier, J.J. Yaouancfrench patent N°0214044<br />
(2002), PCT n° FR0350116 (07/11/03).<br />
[2 ]T. Montier, P. Delépine, K. Le Ny, F. Blanc, Y. Fichou, M. Le Bris, D. Gillet, E. Picquet, J.C. Clément, J.J.Yaouanc,<br />
H des Abbayes, C. Férec, Recent Res.Devel. Chem., 2003,1, 41-58.<br />
[3 ]T. Montier, P. Delépine, K. Le Ny, Y. Fichou, M. Le Bris, E. Hardy, E. Picquet, J.C. Clément, J.J. Yaouanc,C. Férec,<br />
Biochimica et Biophysica Acta, 2004, 1665, 118-133.<br />
292
P-79<br />
SYNTHESIS AND DRUG RELEASE BEHAVIOR OF<br />
UNSATURATED POLYPHOSPHOESTER<br />
Qiu Jin-Jun, Bao Rui, Liu Cheng-Mei*<br />
Department of Chemistry, Huazhong University of Science and Technology, Wuhan 430074<br />
Polyphosphoester was a kind of biodegradable polymer with excellent biocompatibility, which<br />
was investigated in drug delivery, gene carrier and tissue engineering [1] . A novel unsaturated<br />
polyphosphoester(UPPE) containing fumarate segment in repeat units was first synthesizd by<br />
condensation polymerization reaction (Scheme 1) [1] . Fumaric acid, 1,2-propylene glycol and<br />
phosphorous oxychloride were used as the raw materials. Structure of the polymer was<br />
characterized by FT-IR and NMR( 1 H, 13 C, 31 P). The novel unsaturated polyphosphoester could be<br />
crosslinked in situ with N-vinyl pyrrolidone(NVP) for used as an injectable bone tissue engineering<br />
scaffolds material.<br />
Cl<br />
O<br />
P Cl + HO<br />
CH3 O<br />
O<br />
O<br />
OH<br />
NEt3 O<br />
P<br />
O<br />
O<br />
CH3 O<br />
CH3 Scheme 1 Synthesis of unsaturated polyphosphoester.<br />
This paper reported the in vitro drug releases behavior of the crosslinking system of UPPE/NVP<br />
with different contents of ciprofloxacin and different UPPE/NVP ratios (Table 1) in phosphate<br />
buffer solution(pH 7.4) at 37 o C. The results indicated that the system with less content of<br />
ciprofloxacin released more rapidly when the UPPE/NVP ratio was kept at a constant value, the<br />
system with higher NVP/UPPE ratio released more rapidly when the content of ciprofloxacin was<br />
kept at a constant value.<br />
References<br />
[1].Zhao Z., Wang J., Mao H.Q., Polyphosphoesters in drug and gene delivery. Advanced Drug Delivery Reviews 2003,<br />
55:483–499.<br />
[2]. Jin-Jun Qiu, Cheng-Mei Liu, Fen Hu, Xiao-Dong Guo, Qi-Xin Zheng. Synthesis of Unsaturated Polyphosphoester<br />
as a Potential Injectable Tissue Engineering Scaffold Material. Journal of Applied Polymer Science, 2006, 102(4):<br />
3095-3101.<br />
293<br />
O<br />
CH 3<br />
CH 3<br />
O<br />
O<br />
O<br />
O<br />
O<br />
CH3 n
P-80<br />
IN VITRO DEGRADATION PROPERTIES OF UNSATURATED POLYPHOSPHOESTER<br />
β-TRICALCIUM PHOSPHATE COMPOSITES<br />
Qiu Jin-Jun, Bao Rui, Liu Cheng-Mei*<br />
Department of Chemistry, Huazhong University of Science and Technology, Wuhan 430074<br />
A novel unsaturated polyphosphoester(UPPE) was synthesized for used as an injectable bone<br />
repair material [1] . From the point of chemical structure, polyphosphoesters are analogs of nucleic<br />
and teichoic acids with excellent biodegradability and biocompatibility [2] . The phosphoester bond in<br />
the polyphosphoester backbone can be cleaved by water and possibly enzymatic digestion under<br />
physiological conditions. In this paper in vitro degradation property of the crosslinked composites<br />
formed by UPPE, N-vinyl pyrrolidone(NVP) and β-tricalcium phosphate(β-TCP)(Table 1) was<br />
investigated. The surface morphology of degraded sample was imaged by scanning electron<br />
microscopy (SEM).<br />
The results indicated that the UPPE/NVP/β-TCP crosslinked composite was degradable in<br />
simulated body fluid. Mechanical property of degraded sample was close to that of human<br />
cancellous bone, and surface of the degraded sample exhibited porous morphology which will<br />
benefit to the attachment and growth of the osteoblast cell(Figure 1). The physical<br />
parameters(sample mass, mechanical property, et al.) changed dramatically during the initial stages<br />
of degradation. After 48 h of degradation, the physical parameters changed gradually due to the<br />
slow degradation of the crosslinked networks.<br />
Table 1 Formulation of UPPE/NVP networks evaluated in degradation studies.<br />
Components<br />
Formulation<br />
UPPE NVP TCP BPO DMT<br />
F1 1.0g 0.7g 0.6g 0.003g 0.005g<br />
F2 1.0g 1.0g 0.6g 0.003g 0.005g<br />
F1<br />
Figure 1 Scanning electron micrographs of the F1 and F2 samples degraded for 120 days in SBF. The<br />
micrographs were taken at 20000×magnification and the white bar within the image represents 1 µm.<br />
References<br />
[1].Jin-Jun Qiu, Cheng-Mei Liu, Fen Hu, Xiao-Dong Guo, Qi-Xin Zheng. Synthesis of Unsaturated Polyphosphoester<br />
as a Potential Injectable Tissue Engineering Scaffold Material. Journal of Applied Polymer Science, 2006, 102(4):<br />
3095-3101.<br />
[2].Wang D.A., Williams C.G., Li Q., Sharma B., Elisseeff J.H. Synthesis and characterization of a novel degradable<br />
phosphate -containing hydrogel. Biomaterials 2003, 24: 3969–3980.<br />
294<br />
F2
P-82<br />
THE SYNTHESIS, ACID-BASIC AND MEMBRANE-TRANSPORT PROPERTIES OF<br />
THE PHOSPHORYLATED AMINES<br />
Rafael A. Cherkasov, Airat R.Garifzjanov, Maxim V. Khakimov, Alexey S. Talan and Gul’nara A. Ivkova<br />
Kazan state university, Kremlevskaya, 18, Kazan, 420008, Russia<br />
The row of the aminophosphates, α-, β- and γ-aminophosphonates and aminoalkylphosphates (I)<br />
were synthesized by the classical methods of organophosphorus chemistry – via the Pudovik,<br />
Kabachnik-Fields and Todd-Atterton reactions<br />
The measuring of their acid-basic properties shows that all the compounds of the (I) structural<br />
pattern have the lesser basic properties being compared with the corresponding primary and<br />
secondary aliphatic amines. This circumstance can be explained with the strong<br />
electron-withdrawing properties of the phosphoryl unit. The tendency of the bacisity increasing<br />
parallel to the alkyl chain size growth is evident.<br />
We have investigated the membrane-transport properties of the amines (I) in relation to the strong<br />
mineral acid – perchloric acid and polybasic organic acids such as oxalic and tartaric. The transport<br />
flow of the acids depends from the bacisity of the proton-accepting units of the molecule carriers<br />
having the aminophosphonates and aminoalkylphosphates structures. Nevertheless<br />
aminophosphates behave themselves more likely as the phosphoryl compounds, possessing the<br />
lesser transport properties may be due the low bacisity of the nitrogen atom bound with the<br />
phosphorus atom.<br />
The mechanism of the membrane extraction is discussed. As we revealed it is different for the<br />
each pair substrate-carrier and depend from the structure of the H-complexes formed. The influence<br />
of the inner- and intramolecular H-bonds is also discussed.<br />
The work was realized under financial support of RFBR (grant № 04-03-32906).<br />
295
P-102<br />
IDENTIFICATION OF SELF-ASSEMBLY PRODUCTS OF VALINE MEDIATED BY<br />
PHOSPHORUS TRICHLORIDE BY ESI MASS SPCETROMETRY<br />
Wenjie Zhao 1 Li Ma 1 Kui Lu 1 * Yufen Zhao 2<br />
1.School of Chemistry and Chemical Engineering, Henan University of Technology, Zhengzhou 450052, China;<br />
2.Department of Chemistry, Xiamen University, Xiamen 361005, China<br />
Organic phosphorus reagents have been used in synthesis of peptides and cyclopeptides as<br />
active and condensate reagents [1, 2] . Cyclopeptides are playing more and more important role in<br />
biological modeling pharmaceutical design, nano- and molecular devices, biological sensors and<br />
catalysts [3] . We have reported that a-amino acids could be assembled into homo-peptide libraries<br />
with the assistance of phosphorus oxychloride or phosphorus pentachloride [4,5] . In our recent study,<br />
Amino acids also could be assembled into 2~15 homo-peptides and homocyclic peptides by<br />
phosphorus trichloride activation. ESI-MS/MS was used to study the products of reaction and<br />
confirm the structures.<br />
After the reaction of L-Valine(L-Val) with phosphorus trichloride for 48h then quenched with<br />
H2O or various alcohols, the reaction mixtures yielded the corresponding peptides or peptide esters<br />
and cyclopeptides, respectively. To confirm the product structures of homocylic peptides, the<br />
MS/MS spectra of [M+H] + ions were investigated by collision-induced dissociation (CID) tandem<br />
mass spectrometry. The main fragment ions of [M+H] + ion were [M+H-CO] + , [M+H-HCONH2] +<br />
and [M+H-NHCHRCO] + . The protonated cyclo-peptide for valine could yield ions [M+1-28] + ,<br />
[M+1-45] + , [M+1-99] + by stepwise loss of carbon monoxide, formylamine and a valine residue. For<br />
example, the [M+H] + ion of cyclo-(Val)6 at m/z 595 produced the fragment ion at m/z 567<br />
corresponding to [M+H-CO] + , the fragment ion at m/z 550 corresponding to [M+H-HCONH2] + , the<br />
fragment ion at m/z 496 corresponding to [M+H-NHCHRCO] + . In the same way, the [M+H] + ion of<br />
cyclo-(Val)5 at m/z 496 produced the fragment ions at m/z 468, m/z 451 and m/z 397, the [M+H] +<br />
ion of cyclo-(Ala)5 at m/z 427 produced the fragment ions at m/z 399, m/z 382 and m/z 356,<br />
respectively.<br />
Acknowledgements: The authors would like to thank the financial supports from the Chinese<br />
National Science Foundation (No.20272055, 20572016), Henan Province Science Foundation for<br />
Prominent Youth (No.0312000900) and Office of Education of Henan Province (No.<br />
2006KYCX017, 200510459015).<br />
References:<br />
1. C. J. Zhu, X. L. Yang, S. X. Cao , et al. Rapid Commun. Mass Spectrom., 2003,17,825.<br />
2. S. Mc Murry, C.A. Lewis, N.V. Obeyesekere. Pept. Res., 1994, 7, 195.<br />
3. D.T. Bong, T. D. Clark, J. R. Granja, et al. Angew. Chem. Int. Ed., 2001, 40 , 988.<br />
4. N. Zhou, K. Lu, Y. Liu, et al. Rapid Commun. Mass Spectrom., 2002,16, 919.<br />
5. H. Li, W. J. Zhao, S. X. Cao, et al. Chem. J. Chinese Universities, 2004, 25, 1866.<br />
296
P-108<br />
DISCOVERY OF ALKENYLPHOSPHORUS COMPOUNDS AS A NEW CLASS OF<br />
CYTOTOXIC AGENTS FOR CANCER CELLS<br />
Xiaohui Wang and Li-Biao Han<br />
National Institute of Advanced Industrial Science and Technology Tsukuba, Ibaraki 305-8565, Japan; E-mail:<br />
libiao-han@aist.go.jp<br />
A series of Alkenylphosphorus compounds were synthesized and evaluated for anticancer activity<br />
using several tumor cell lines. The results showed that HCC3 was the most potent anticancer agent<br />
with IC50 values lower than those of the reference drug cisplatin. The cellular effects of the tested<br />
compounds had much less cytotoxic effect on growth of NIH3T3 cells, while they produced<br />
pronounced inhibition of S180 cell growth. Structure-activity relationship indicated that the double<br />
bonds of the unsaturated phosphinoyl moiety was essential for the cytotoxic activity.<br />
Alkenylphosporus compounds were further found to induce apoptosis in different cell lines as<br />
evidenced by apoptotic ELISA assay.<br />
297<br />
Control<br />
Treating with an alkenylphosphorus compound<br />
This work was partially supported by New Energy and Industrial Technology Development<br />
Organization (NEDO) of Japan (Industrial Technology Research Grant Program in 2004).
P-109<br />
THE SYNTHSIS OF TRIPYRROLE PEPTIDE CONTAINING PHOSPHONYL<br />
Li-feng Cao 1 , Li-li Shen 1 ,Ru-yi Zou 1 , Cun-jiang Liu 1 , Yong Ye* 1 , Xin-cheng Liao* 1 , Yu-fen Zhao 1,2<br />
1 .Department of Chemistry, Key Laboratory of Chemical Biology and Organic Chemistry, Zhengzhou University,<br />
Zhengzhou, 450052, China; 2 .The Key laboratory for Bioorganic Phosphorus Chemistry and Chemical Biology<br />
(Ministry of Education), Department of Chemistry, Tsinghua University, Beijing 100084,China. *E-mail:<br />
yeyong@zzu.edu.cn<br />
Many research efforts have been aimed at targeting specific sequences in DNA with synthetic<br />
ligands with the idea of designing both drugs and molecular probes for DNA polymorphism. Minor<br />
groove binders are one of the most widely studied class of agents characterized by high level of<br />
sequence specificity and they are still an interesting class of DNa ligands which demonstrate to<br />
possess several biological activities [1-3] .<br />
The tripyrrole peptide distamycin A is a naturally occurring antibiotic agent isolated in 1962 and<br />
subsequently found having interesting antibacterial and antiviral activities. Our group had found<br />
some phosphonyl amino acid have good biological activity[4]. In order to obtain high biological<br />
activity compound, a series of tripyrrole peptide containing phosphonyl were synthesized. The<br />
structures of these compounds was confirmed by 1H NMR, 31P NMR, MS and IR. The structure of<br />
target compouond is shown at follow:<br />
The title compounds were synthesized by 8 steps. The N-methylpyrrole containing nitro group<br />
react with amino acid ester, then couple with dipyrrole carboxylic acid. To achieve the optimum<br />
result of tripyrrole/amino acid ester conjugate, TLC was employed to monitor the progress of the<br />
coupling reaction. After reduction of the nitro group in tripyrrole/amino acid ester conjugate, the<br />
phosphonyl was introduced to it and title compound was formed. The activity of title compounds<br />
are being continued.<br />
Acknowledgments<br />
The authors would like to thank the financial supports from NNSFC (No.20602032 and 20572061)<br />
Reference<br />
[1]. J. W. Trauger, E. E. Baird, P. B. Dervan, Nature, 1996, 382, 559.<br />
[2]. S. White, E. E. Baird, P. B. Dervan, Chem. Biol., 1997, 4, 569.<br />
[3]. J. M. Gottesfeld, L. Neely, J. W. Trauger, E. E. Baird, P. B. Dervan, Nature, 1997, 387, 202.<br />
[4]. Y. S. Li, Y. F. Zhao, et al., Bioorganic & Medicinal Chemistry, 2000, 8, 2675.<br />
298
P-142<br />
DEVELOPING A SIMPLE ASSAY TO SCREEN FOR ORGANOPHOSPHATASES<br />
Gareth Williams<br />
Dstl Porton Down, UK, Email: grwilliams@dstl.gov.uk<br />
Organophosphorus nerve agents could pose a hazard to both civilian populations and military<br />
personnel, and improved post-exposure medical-countermeasures are potentially of interest. There<br />
is also a drive to find improved decontamination methods especially ones that are<br />
environmentally-benign. Enzymes could provide a novel solution.<br />
There are already a number of enzymes known to catalyse the hydrolysis of organophosphates<br />
such as phosphotriesterase (Pseudomonas diminuta), DFPase (Loligo vulgaris) and Human<br />
Paraoxonase, PON1 (Serum paraoxonase family).<br />
To find potential enzymes with high Kcat values, large libraries of mutated enzymes need to be<br />
exploited, which necessitates the development of a simple high-throughput screen. This process is<br />
commonplace in the pharmaceutical industry where vast quantities of compounds are screened<br />
against one target enzyme, however our process is the reverse, and the target enzyme will be<br />
modified rather than substrates.<br />
This poster reports the synthesis of a number of fluorogenic nerve agent analogues that mimic the<br />
parent nerve agents effectively, and are suitable tools for screening candidates for directed evolution<br />
of efficient nerve-agent organophosphatases.<br />
299
P-143<br />
THE PHARMACOKINETICS ANALYSIS OF THE<br />
PHOSPHORYL PEPTIDES IN MCF-7/ADR CELLS<br />
Peng Zhang, Hongxia Liu, Zhenhua Xie ,Feng Liu, Mian Liu ,Yuyang Jiang*<br />
The Key Laboratory of Chemical Biology, Guangdong Province, Graduate School at Shenzhen, Tsinghua University,<br />
Shenzhen 518055, P.R.China Tel:86-755-26032094, Fax:86-755-26036087<br />
E-mail:Jiangyy@sz.tsinghua.edu.cn<br />
The modification (such as phosphorylation, methylation, acetylation and glycosylation) of amino<br />
acids and peptides might have incurred a great improvement in their physiochemical property. The<br />
oligopeptide N-diisopropyloxyphosphoryl- valine- phenylalanine-3,4,5- trimethoxyaniline(DIPP-Val-Phe-TMOA)<br />
is a novel potential pre-drugs which has the function to induce<br />
the apoptosis of multiple tumor cells. Now,we have developed a HPLC/UV method to study the<br />
pharmacokinetics of DIPP-Val-Phe-TMOA in MCF-7/ADR cells. The peak concentration (Cmax)<br />
of DIPP-Val-Phe-TMOA in MCF-7/ADR cells was up to 12.32 μg.mL-1 at 3.15h. The absorption<br />
half-life(T1/2Ka) and elimination half-life(T1/2K) of DIPP-Val-Phe-TMOA was 2.67±0.05h<br />
and 10.24±0.07h, respectively. The area under the cell concentration-time curve(AUC) was<br />
203±0.456 μg.h.mL-1. It suggested that DIPP-Val-Phe-TMOA possessed higher hydrophobicity,<br />
and could easily penetrate into the membrane of MCF-7/ADR cells. The results also revealed that<br />
DIPP-Val-Phe-TMOA has better biological activity and longer half lifetime. These are consistent<br />
with the results of biological experiments.<br />
Acknowledgments<br />
This work was supported by the National Natural Science Foundation (China, 20472043, 20572060,<br />
20672068), the Project of Science and Technology of Guangdong Province<br />
( 2005A11601008),Mega-Project of Science Research of Ministry of Science and Technology<br />
(China, 2005CCA03400), the Natural Science Foundation of Guangdong Province (China,<br />
06028200)<br />
300
P-145<br />
NEW PHOSPHORAMIDATE DICATIONIC VECTORS FOR GENE THERAPY<br />
Mathieu Mével a , François Lamarche a , Jean-claude Clément a , Jean-jacques Yaouanc a , Laure Burel a , Philippe Giamarchi a ,<br />
Tristan Montier b , Pascal Delépine b , Pierre Lehn b , Paul-Alain Jaffrès a , Claude Férec b<br />
a- CEMCA, UMR CNRS 6521, Faculté des Sciences et Techniques, Université de Bretagne Occidentale, 6 avenue Le<br />
Gorgeu, 29238 Brest, (France) ; b-Unité INSERM 613,, Institut de Synergie des Sciences et de la Santé, Université de<br />
Bretagne Occidentale, avenue Foch, 29609 Brest cedex 2 (France)<br />
It’s widely believed that gene therapy will become an efficient way for the treatment of<br />
diseases such as cancer, cystic fibrosis and for vaccination. The essential requirements for gene<br />
delivery are the transport of DNA through the cell membrane and ultimately the nucleus. Different<br />
strategies have been used for the delivery of genetic material classified as viral or synthetic delivery<br />
systems. The chemical structure of the synthetic vectors can be classified into two categories:<br />
cationic polymers (PEI, …) and cationic lipids. In our group, cationic lipids possessing structure<br />
inspired from phospholipids present into membranes have been synthesized and tested for in vivo<br />
and in vitro essays1, 2, 3. To increase the condensation of DNA and to decrease the toxicity during<br />
the transfection, we raised the number of cationic charges on our phosphoramidates as depicted on<br />
the following scheme.<br />
Reference<br />
1.J.C. Clément, P. Delépine, H des Abbayes, C, Férec, K. Le Ny, T. Montier, J.J. Yaouanc, French patent N°0214044<br />
(2002), PCT n° FR0350116 (07/11/03).<br />
2.T. Montier, P. Delépine, K. Le Ny, F. Blanc, Y. Fichou, M. Le Bris, D. Gillet, E. Picquet, J.C. Clément, J.J. Yaouanc,<br />
H des Abbayes, C. Férec, Recent Res.Devel. Chem., 2003,1, 41-58.<br />
3.T. Montier, P. Delépine, K. Le Ny, Y. Fichou, M. Le Bris, E. Hardy, E. Picquet, J.C. Clément, J.J. Yaouanc, C. Férec,<br />
Biochimica et Biophysica Acta, 2004, 1665, 118-133.<br />
301
P-146<br />
NOVEL CIDOFOVIR PRODRUGS: CONCEPTUAL AND SYNTHETIC STRATEGIES<br />
Boris A. Kashemirov 1 , Joy Lynn F. Bala 1 , Xiaolan Chen 2 , Zhidao Xia 3 , R. Graham G.Russell 3 , and Charles E.<br />
McKenna 1 *<br />
1. Department of Chemistry, University of Southern California, Los Angeles, CA, 90089 USA.<br />
2. Procter & Gamble Pharmaceuticals, Mason, OH, 45040 USA.<br />
3. University of Oxford, Nuffield Department of Orthopedic Surgery, Nuffield Orthopedic Center, Headington, Oxford,<br />
OX3 7LD UK.<br />
Nitrogen-containing bisphosphonate (N-BP) drugs are widely used for the treatment of various bone diseases,<br />
including osteoporosis and Paget’s disease. N-BPs, such as risedronate or zoledronate, inhibit farnesyl diphosphate<br />
synthase (FDPS), which thereby prevents the prenylation of crucial GTPase proteins in osteoclasts. In addition, some<br />
BPs and related phosphonocarboxylate (PC) analogs have demonstrated anti-neoplastic effects; however, these effects<br />
are currently poorly understood. As a result, N-BPs and their PC analogs linked to imaging agents, such as fluorescent<br />
labels, are an attractive target. Activated esters of fluorescent labels are typically conjugated to drugs containing<br />
primary amines, therefore forming a stable amide bond. Parent drugs lacking this functionality further require structural<br />
modifications to introduce an appropriate site for direct conjugation. Specifically, risedronate contains a pyridine ring<br />
that is not chemically suitable for direct acylation by the fluorescent label. Herein, we report the first synthesis of a<br />
fluorescently labeled analog of risedronate and similar labeling of other risedronate analogs. These syntheses include a<br />
novel coupling strategy developed at USC utilizing linker moieties between the drugs and labels. The fluorescent<br />
compounds have been evaluated in hydroxyapatite bone affinity assays.<br />
302
P-147<br />
FLUORESCENTLY LABELED RISEDRONATE AND RELATED ANALOGS: NOVEL<br />
SYNTHESIS AND EVALUATION AS IMAGING PROBES<br />
Larryn W. Peterson 1 , Boris A. Kashemirov 1 , John M. Hilfinger 2 , and Charles E. McKenna 1 *<br />
1 Dept. of Chemistry, University of Southern California, Los Angeles, CA 90089 USA;<br />
2 TSRL, Inc., Ann Arbor, MI 48108 USA<br />
Cidofovir (HPMPC, 1) is a broad-spectrum antiviral agent that is used (Vistide®) to treat AIDSrelated CMV retinitis.<br />
Cidofovir is of particular interest as a potential therapy for orthopox virus infections, and it is currently the only drug<br />
approved for the treatment of smallpox. An important limitation of cidofovir as a therapeutic agent is its low oral<br />
bioavailability resulting in poor transport into cells. In principle, the bioavailability of cidofovir can be increased by<br />
using a prodrug approach; attachment of auxiliaries to the parent drug mask the negative charges allowing for increased<br />
transport. Once inside the cell, the moiety is cleaved to release the active parent drug. We have recently synthesized two<br />
new types of prodrugs incorporating benign peptide auxiliaries. The first prodrug 2 incorporates a Ser-containing<br />
peptide at R1 with R2 = Et, while the second prodrug 3 uses a linker to a peptide at R1 with R2 = H. In our experience,<br />
mono-esterification of the 1 phosphonate proved difficult as intramolecular cyclization intervened. Therefore, 2 was<br />
synthesized from an intermediate in the synthesis of cidofovir. Dealkylation and debenzylation followed by conjugation<br />
with the dipeptide afforded 2. 3 was synthesized by attaching an appropriate linker at R1 and subsequent conjugation<br />
with a peptide. The detailed syntheses and preliminary biological evaluation of these novel cidofovir prodrugs will be<br />
discussed.<br />
303
P-149<br />
SYNTHESES AND CHARACTERIZATIONS OF α-AMINOPHOSPHONIC ACIDS AND<br />
THEIR DERIVATIVES<br />
Fang Hua 1 , Fang Meijuan 2 , Liu Linna 1 , Zhao Yufen 1, 2 *<br />
1The Key Laboratory for Chemical Biology of Fujian Province, Department of Chemistry, Xiamen University, Xiamen<br />
361005, China.<br />
2 Department of Pharmaceutical Science, Medical College, Xiamen University, Xiamen 361005, People’s Republic of<br />
China, Xiamen University.<br />
Compounds with phosphorus-containing structures are an important part of chemistry, because of<br />
their applications in medicine fertilizers,pesticides and plant growth regulators.<br />
-Aminophosphonic acids and their derivatives, as phosphorus analogs of amino acid, have<br />
attracted much attention because they show widely biological activities. In this paper, the<br />
compounds, (Benzoylamino-phenyl-methyl)- phosphonic acid dialkyl esters were synthesized.<br />
Their structures were confirmed by IR, 31P, 1H, 13C NMR, MS and elemental analysis. The study<br />
on the antibacterial and antitumor activities of these compounds was underway.<br />
Compounds 2a-2g were synthesized as shown in Scheme 1 according to methods proposed in the<br />
literature1.2. General procedures are shown as follows.<br />
X<br />
O<br />
Cl +<br />
R 1O<br />
OR 1<br />
P O<br />
1<br />
NH 2<br />
304<br />
Et 3N ice bath<br />
CH 2Cl 2<br />
R 1O<br />
OR1 P O O<br />
2a-2i<br />
Scheme 1 Synthetic pathway of compounds 2a-2i<br />
Compound 1 (1 mmol) was dissolved in dry dichloromethane (20<br />
mL) to which triethylamine (0.4 mL) was added, and the solution was<br />
added dropwise to 4-substituted benzoyl chloride (1.2 mmol) in<br />
CH2Cl2 (10 mL). After 6 h completion of the reaction, the solvents<br />
were removed under reduced pressure. The residue was added 15 mL<br />
water and then extracted with ethyl acetate (3 × 15 mL), dried over<br />
anhydrous MgSO4 and concentrated under vacuum. The residual<br />
liquid was purified by silicon gel column chromatography (petroleum<br />
ether/ethyl acetate = 2:1) to give compounds products 2a-2ias colorless<br />
solids.<br />
References<br />
1. Takahashi H., Yoshioka M., Imai N., Onimura K., Kobayashi S. Synthesis 1994; 8: 763.<br />
2. Villeneuve G. B., Chan T. H., TELEAY Tetrahedron Lett. 1997; 38 (37): 6489.<br />
N<br />
H<br />
X<br />
Comp. X R1<br />
2a CH<br />
i<br />
Pr<br />
2b N<br />
i<br />
Pr<br />
2c COCH3<br />
i<br />
Pr<br />
2d CCH3<br />
i<br />
Pr<br />
2e CNO2<br />
i<br />
Pr<br />
2f COEt<br />
i<br />
Pr<br />
2g Cl<br />
i<br />
Pr<br />
2h CH Et<br />
2i N Et
P-150<br />
LIGAND-PROTEIN INVERSE DOCKING AS A POTENTIAL TOOL IN THE<br />
COMPUTER SEARCH OF PROTEIN TARGETS OF MYCOEDIKETOPIPERAZINE, A<br />
NOVEL FUNGAL METABOLITE FROM A PAPULARIA SP.<br />
Fang Meijuan 1 *, Fang Hua 2 , Ji Zhiliang 3 , Luo Shuna 2 , Zhao Yufen 1,2<br />
1 Department of Pharmaceutical Science, Medical College, Xiamen University, Xiamen 361005, People’s Republic of<br />
China, Xiamen University. E-mail: fangmj@xmu.edu.cn<br />
2 Department of Chemistry, The Key Laboratory for Chemical Biology of Fujian Province, College of Chemistry and<br />
Chemical Engineering, Xiamen University, Xiamen 361005, People’s Republic of China<br />
3 Bioinformatics Research Group, School of Life Sciences, Xiamen University, Xiamen 361005<br />
Fujian Province, PR china<br />
Mycoediketopiperazine, a novel fungal metabolite from a Papularia sp., which was isolated from<br />
a highly organicphosphorous polluted environment. Mycoediketopiperazine exhibited low potent<br />
cytotoxic activity in the KB cell line (IC50 120 ug/mL) by the MTT assay protocol which was<br />
adapted from that described by Mosmann. And it no shows antimicrobial activity. Owing to novel<br />
structure of Mycoediketopiperazine and no find high bioactivity of the compound in experiments,<br />
there is a need to develop a method for searching potential protein targets of Mycoediketopiperazine<br />
to facilitate the prediction of unknown and secondary therapeutic target proteins and those related to<br />
the side effects and toxicity of a drug or drug candidate.<br />
An inverse-docking procedure called INVDOCK has been introduced to conduct<br />
computer-automated inverse-docking searches of this database to identify potential protein targets<br />
of a small molecule. Hence, Mycoediketopiperazine is investigated in this study. INVDOCK is a<br />
ligand–protein inverse docking algorithm, which conducts computer-automated search of potential<br />
protein targets of a small molecule by attempting to dock it to a cavity of each of these proteins. A<br />
cavity is represented by a cluster of overlapping spheres that fill-up that cavity. This underlying<br />
cavity database is generated from the protein 3D structures of protein data bank (PDB). The crystal<br />
structure of Mycoediketopiperazine was used as the docked structure of ligand.<br />
Mycoediketopiperazine is flexibly docked into the cavity by a procedure involving multiple<br />
conformer shape-matching alignment of the molecule to the cavity.<br />
Using the inverse-docking process, we found 456 putative protein targets to wich<br />
Mycoediketopiperazine can bind or weakly bind. Figure 1 shows the ligand-protein interaction<br />
energy E of all protein docked with Mycoediketopiperazine. Potential human and mammalian<br />
protein targets strongly docked with Mycoediketopiperazine identified by INVDOCK are given in<br />
Table 1 along with the respective ligand-protein interaction energy E (E≤-60 kcal/mol). The<br />
ligand-protein interaction energy E that Mycoediketopiperazine docked to one of the identified<br />
protein targets, RNA inhibitor substrate (PDB Id: 1a52) is -74.0 kcal/mol.<br />
305
Tab. 1 Therapeutic targets of Mycoediketopiperazine identified by INVDOCK search (E≤-60 kcal/mol)<br />
PDB Protein (HUMAN) Molecular Function E(kcal/mol)<br />
1m5p RNA INHIBITOR SUBSTRATE none -74.0<br />
1lzj GLYCOSYLTRANSFERASE B Transferring hexosyl groups -71.2<br />
1imb INOSITOL MONOPHOSPHATASE Inositol or phosphatidylinositol phosphatase activity -70.6<br />
1gzu<br />
NICOTINAMIDE<br />
MONONUCLEOTIDE ADEN<br />
Nucleotidyltransferase activity -69.7<br />
2bcu DNA POLYMERASE LAMBDA none -69.4<br />
1m5o RNA SUBSTRATE none -68.7<br />
1nn3<br />
SIMILAR TO THYMIDYLATE<br />
KINASE<br />
Thymidylate kinase activity; ATP binding -65.9<br />
1fos C-JUN PROTO-ONCOGENE none -63.4<br />
1z0a<br />
RAS-RELATED PROTEIN<br />
RAB-2A<br />
none -63.0<br />
1ga5<br />
ORPHAN NUCLEAR RECEPTOR<br />
NR1D1<br />
ligand-dependent nuclear receptor activity; zinc ion<br />
binding; sequence-specific DNA binding<br />
-62.8<br />
1dlh HLA-DR1 none -62.3<br />
1mck<br />
IMMUNOGLOBULIN LAMBDA<br />
LIGHT CHAI<br />
none -61.2<br />
1ef1 MOESIN Cytoskeletal protein binding -61.0<br />
1ozu<br />
SUPEROXIDE DISMUTASE<br />
[CU-ZN]<br />
Copper, zinc superoxide dismutase activity; metal<br />
ion binding<br />
-60.8<br />
Fig. 1 Therapeutic targets of Mycoediketopiperazine identified by INVDOCK search<br />
Reference<br />
[1] Chen YZ, Zhi DG. Ligand-protein inverse docking and its potential use in computer search of putative protein<br />
targets of a small molecule [J]. Pharm Ther, 2000, 86:191-198.<br />
[2] Ji ZL, Wang Y, Yu L, et al. In silico search of putative adverse drug reaction related proteins as a potential tool for<br />
facilitating drug adverse effect prediction [J]. Toxicology Letters, 2006, 164: 104-112.<br />
306
P-151<br />
SYNTHESIS OF MOPHOLINO OLIGONUCLEOTIDE WITH NORMAL PHOSPHATE<br />
BACKBONE BY PHOSPHORAMIDITE METHODOLOGY<br />
Pu-Qin Cai 1, 2 , Nan Zhang 2 , Chun Guo 1 , Pei-Zhuo Zhang 4 , Yu-Yang Jiang 1, 2 *, Yu-Fen Zhao 3<br />
1<br />
College of Pharmaceutical Engineering, Shenyang Pharmaceutical University, Shenyang , 110016 , P. R. China<br />
2<br />
The Key Laboratory for Chemical Biology of Guangdong Province, Shenzhen Graduate School of Tsinghua<br />
University , Shenzhen , 518055 , P. R. China<br />
3<br />
The Key Laboratory for Chemical Biology of Fujian Province, Department of Chemistry Xiamen University,<br />
Xiamen , 361005, P. R. China<br />
4<br />
Shanghai GenePharma Co., Ltd. Suite 602,1011 Halei Road, Z.-J. High Tech Park, Shanghai 201203, P.R. China<br />
With the development of the antisense, ribozyme, and RNAi technology, mRNA gradually<br />
becomes a new drug target1, 2. However, application of natural oligonucleotides in vivo and their<br />
possibility to be drugs still face several problems that have not yet been comprehensively settled.<br />
For example, oligonucleotide delivery, stability in vivo, pharmacokinetics, and specificity will be<br />
the major research fields in the future investigation. Chemically modified oligonucleotides are<br />
developed to overcome these problems and have improved properties over natural oligonucleotides.<br />
Several chemically modified oligonucleotides such as phosphorothioates, FANA, 2’-O-Me and<br />
2’-O-allyl (Fig. 1) have been widely applied in oligonucleotide-based technologies being developed<br />
as drug platforms including antisense, ribozyme, and RNAi3. We synthesized mopholino<br />
nucleotides with normal phosphate backbones (Fig. 2) by phosphoramdite methodology. They<br />
exhibit strong affinity with RNA oligonucleotide and high nuclease resistance which make them a<br />
candidate to bring new features in the oligonucleotide-based technologies.<br />
O<br />
O<br />
H<br />
H<br />
O<br />
P<br />
O<br />
O<br />
S<br />
H<br />
B<br />
H<br />
OH<br />
O<br />
O<br />
H<br />
H<br />
O<br />
P<br />
O<br />
O<br />
O<br />
F<br />
B<br />
H<br />
O<br />
O<br />
Fig. 1: Structure of phosphorothioates, FANA, 2’-O-Me and 2’-O-allyl. B= Uracil, Cytosine,<br />
Adenine, Guanine.<br />
O<br />
Fig. 2: Structure of mopholino nucleotides with normal phosphate backbones. B= Uracil, Cytosine,<br />
Adenine, Guanine and Thymine.<br />
References<br />
[1] Alan Dove, Nature Biotechnology 20, 121 (2002).<br />
[2] Simon W Jones et, al, Current Opinion in Pharmacology 4, 522 (2004).<br />
[3] Hong-Yan Zhang et, al, Current Topics in Medicinal Chemistry 6, 893 (2006).<br />
H<br />
307<br />
H<br />
O<br />
P<br />
O<br />
O<br />
O<br />
O<br />
O<br />
N<br />
H<br />
O<br />
P O<br />
O<br />
B<br />
H<br />
B<br />
O<br />
O<br />
H<br />
H<br />
O<br />
P<br />
O<br />
O<br />
O<br />
H<br />
B<br />
H<br />
O
P-152<br />
ELECTROSPRAY IONIZATION MASS SPECTRA OF AMINO ACID METHYL ESTER<br />
5'-PHOSPHORAMIDATES OF 2', 3'-ISOPROPYLIDENEURIDINE<br />
Chen Wei-Zhu 1,2 , Gao Yu-Xing 2 2 *<br />
, Zhao Yu-Fen<br />
1 The Third Institute of Oceanography of The State Oceanic Administration, Xiamen 361005, P. R. China<br />
2 The Key Laboratory for Chemical Biology of Fujian Province,Department of Chemistry, College of Chemistry and<br />
Chemical Engineering, Xiamen 361005, P. R. China<br />
Recently, O-nucleoside N-phosphoryl amino acids are continuing to be an important class of<br />
rationally designed antiviral nucleoside prodrugs1 and the model molecules in the study of the<br />
prebiotic biosynthesis of proteins.2 In the present work, we used Atherton-Todd3 reaction to<br />
synthesize a series of amino acid methyl ester 5’-phosphoamidates of protected uridine. These<br />
compounds were determined by positive-ion mode electrospray ionization mass spectrometry<br />
(ESIMS) in conjunction with multistage tandem mass spectrometry. The fragmentation pathways<br />
were investigated, and most of the fragment ions contained the phosphoryl group. It was interesting<br />
that the methoxy group of amino acid methyl ester could migrate from the carbonyl group to the<br />
phosphoryl group only for the sodium ion adduct, but not for the protonated molecule. The possible<br />
formation mechanism was summarized in Scheme 1. Sodium ion could coordinate with phosphoryl<br />
oxygen and carbonyl oxygen simultaneously to form a seven-membered ring. And the oxygen of<br />
methoxy group might attack the phosphorus to form a five-membered pentacoordinated phosphorus<br />
intermediate. Then, with the migration of methoxy group from carbonyl group to phosphoryl group,<br />
the five-membered ring might break down by elimination of a neutral molecule CO. Finally, the<br />
pentacoordinated phosphorus intermediate might lose one 2', 3'-isopropylideneuridine to produce<br />
the ion at m/z 252. These results strongly suggested that metal ion, such as sodium ion, might play<br />
an important role in the rearrangement.<br />
O<br />
H H<br />
H3C O C C N<br />
CH2 OH<br />
HO P O<br />
H3CO H<br />
O C C NH<br />
CH2 OH<br />
ONa<br />
HO P O<br />
H 3CO<br />
ONa<br />
NH<br />
CH<br />
CH 2<br />
OH<br />
-CO<br />
ONa<br />
P O<br />
OH<br />
m/z 564<br />
O<br />
O<br />
O<br />
O N<br />
O<br />
O N<br />
O N<br />
O<br />
NH<br />
O<br />
O<br />
O<br />
O<br />
NH<br />
NH<br />
O<br />
O<br />
O<br />
308<br />
Na<br />
O<br />
O<br />
P O<br />
C OCH3OH CH NH<br />
CH2 OH<br />
ONa<br />
H<br />
HO P O<br />
3C<br />
O<br />
H<br />
O C C NH<br />
CH2 -2', 3'-isopropylideneuridine<br />
OH<br />
O<br />
ONa<br />
O P OCH3 NH<br />
CH<br />
CH 2<br />
OH<br />
O<br />
O<br />
O N<br />
O<br />
O N<br />
m/z 252<br />
O<br />
O<br />
NH<br />
NH<br />
O<br />
O<br />
ONa<br />
HO P OCH3 Scheme 1 A possible formation mechanism of rearrangement ion at m/z 252<br />
Refrences<br />
[1] McIntee E. J.; Remmel R. P.; Schinazi R. F.; Abraham T. W.; Wagner C. R. Probing the Mechanism of Action and Decomposition<br />
of Amino Acid Phosphomonoester Amidates of Antiviral Nucleoside Prodrugs. J. Med. Chem. 1997, 40: 3323-3331<br />
[2] Fu H., Li Z. L., Zhao Y. F., Tu G. Z. Oligomerization of N,O-Bis(trimethylsilyl)-R-amino Acids into Peptides<br />
Mediated by o-Phenylene Phosphorochloridate. J. Am. Chem. Soc. 1999,121: 291-295<br />
[3] Atherton F. R., Openshaw H. T., Todd A. R. J. Chem. Soc. 1945, 660-663<br />
N<br />
CH<br />
CH 2<br />
OH
P-153<br />
SYNTHESIS AND BIOACTIVITY OF SIX-RING NUCLEOSIDE MODIFIED siRNA<br />
Nan Zhang 1, 2 , Yue Wang 1, 2 , Pu-Qin Cai 2,3 , Pei-Zhuo Zhang 4 , Yu-Yang Jiang 1, 2 *, Yufen Zhao 1,5<br />
1<br />
Key Laboratory of Bioorganic Phosphorus Chemistry and Chemical Biology (Ministry of Education), Department of<br />
Chemistry Tsinghua University, Beijing, 10084, P. R. China<br />
2<br />
Key Laboratory for Chemical Biology of Guangdong Province, Shenzhen Graduate School of Tsinghua University,<br />
Shenzhen, 518055, P. R. China<br />
3<br />
College of Pharmaceutical Engineering, Shenyang Pharmaceutical University, Shenyang, 110016, P. R. China<br />
4 Shanghai GenePharma Co., Ltd. Suite 602,1011 Halei Road, Z.-J. High Tech Park, Shanghai 201203, P.R. China<br />
5<br />
Key Laboratory for Chemical Biology of Fujian Province, Department of Chemistry Xiamen University, Xiamen,<br />
361005, P. R. China<br />
Small interfering RNA (siRNA) molecules have drawn much attention since it can mediate target<br />
gene expression in a variety of mammalian cells 1 . SiRNA works by Watson-Crick base-pairing of<br />
an RNA guide sequence with target RNA followed by specific degradation of the target. There has<br />
been considerable interest in harnessing the power of siRNA to treat human diseases such as cancer,<br />
sepsis, and viral infections 2 .<br />
However, therapeutic application of siRNA will be dependent on improvements in siRNA<br />
stability, delivery, specificity and biological uptake. A number of chemically modified RNA have<br />
been test in siRNA landscape, such as 2’-O-ally, 2’-deoxy-fluoro, LNA, boranophosphate, and<br />
phosphorothioates 3 .<br />
As far as I know, our group first synthesized several six-ring modified siRNA by phosphoramdite<br />
methodology. They exhibit strong affinity with RNA and DNA and high nuclease resistance. The<br />
further research of its bioactivity is in process in our lab. It introduces a new category of molecules<br />
for potential use as RNAi-based therapeutics.<br />
B<br />
O<br />
O<br />
-O<br />
309<br />
N<br />
O<br />
P O<br />
O<br />
B =A,U,C,G,T<br />
References<br />
[1] Sayda M.Elbashir, et al, Nature, 2001,411,494<br />
[2] RCC Ryther, et al, Gene Therapy, 2005,12, 5<br />
[3] Barbara Nawrot, Current Topics in Medicinal Chemistry, 2006,6,913
P-156<br />
A NOVEL SYNTHESIS OF<br />
O-PHOSPHORYLATEDN-MENTHOXY-CARBONYL TYROSINE<br />
Wang Tongjian 1 , Cheng Fang 2 , Tang Guo 1 , Zhao Yufen 1<br />
1The Key Laboratory for Chemical Biology of Fujian Province and 2Key Laboratory of Analytical Sciences of Ministry<br />
of Education, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, P.R.China<br />
The phosphorylated tyrosine that consists in protein is a main existence that can respond to the<br />
stimulation from the environment, so it plays an important role in life process[1]. The previous<br />
methods to prepare the phosphorylated tyrosine which was consisted of two steps including oxidation<br />
following phosphite [2] were based on the phosphite amine. In the recent research, Atherton-Todd<br />
reaction has usually been used for the synthesis of O-phosphorylated N-Boc-tyrosine, but the method<br />
has its limitations owing to the strict anhydrous condition and the poisonous carbon tetrachloride [3].<br />
In this case, we took advantage of N,N’-Disuccinimidyl carbonate(DSC) to produce<br />
N-Menthoxycarbonyl tyrosine and luckily we found it has the antibacterial efficacy. The key reagent<br />
is trichloroisocyanuric acid which promotes the rapid conversion of dialkyl phosphites into their<br />
dialkyl chlorophosphates[4] .The advantageous features of this reaction are the mild condition and<br />
the simple operation. With the same method, we get a series of O-phosphorylated<br />
N-menthoxycarbonyl tyrosine in a good yield (50%-70%).<br />
O<br />
O<br />
P<br />
O<br />
H<br />
Cl<br />
O N O<br />
Cl<br />
N N<br />
O<br />
Cl<br />
CH3CN<br />
O<br />
HO<br />
O<br />
P<br />
O<br />
1a~1c 2a~2c 3a~3c<br />
a: diisopropyl phosphite ester (DIPPH)<br />
b: dimethyl phosphite ester (DMPH)<br />
c: diethyl phosphite ester (DEPH)<br />
Cl<br />
C<br />
H2<br />
References<br />
[1].Fahad A. A. , J inzi J. W. , Kit S. L. . Biopolymers(Pep tide Science) [J ], 1998, 47: 197—203<br />
[2].Kitas E. A. , Knorr R. , T rzecialA. et al. . Hel. Chim. Acta[J ], 1991, 74: 1 314—1 328<br />
[3].Zhao Gang, Li Yanmei, Luo Shizhong, Han Bo, Zhao Yufen. Chemical Journal of Chineseuniversities<br />
22(12),2034-2036<br />
[4].Acharya, J.; Gupta, A. K.; Shakya, P. D.; Kaushik, M. P. Tetrahedron Letters (2005), 46(32), 5293-5295.<br />
310<br />
NH<br />
CH<br />
O<br />
DBU<br />
C<br />
O<br />
O<br />
O<br />
O<br />
O<br />
P<br />
O<br />
O<br />
C<br />
H 2<br />
NH<br />
CH<br />
O<br />
C<br />
O<br />
O<br />
O
P-157<br />
INHIBITION OF POKEMON GENE EXPRESSION BY ANTISENSE<br />
OLIGONUCLEOTIDES<br />
Nan Zhang 1, 2 , Yue Wang 1, 2 , Zhen-Hua Xie 2 , Yu-Yang Jiang 1, 2 *, Yu-Fen Zhao<br />
1<br />
Key Laboratory of Bioorganic Phosphorus Chemistry and Chemical Biology (Ministry of Education), Department of<br />
Chemistry Tsinghua University, Beijing, 10084, P. R. China<br />
2<br />
Key Laboratory for Chemical Biology of Guangdong Province, Shenzhen Graduate School of Tsinghua University,<br />
Shenzhen, 518055, P. R. China<br />
3<br />
Key Laboratory for Chemical Biology of Fujian Province, Department of Chemistry Xiamen University, Xiamen,<br />
361005, P. R. China<br />
Pokemon is an important transcription factor, which regulates the important tumor suppressor ARF.<br />
Pokemon is overexpressed in multiple human cancers. Lack of Pokemon causes cellular senescence,<br />
apoptosis, and blockage of differentiation. We designed and synthesized four 18-mer<br />
phosphorothioate modified antisense oligonucleotides targeting the coding regions of Pokemon<br />
mRNA, and investigated the down-regulation of Pokemon expression by measurement of the<br />
fluorescence intensity of Pokemon-GFP fusion protein in COS-7 cell. Antisense oligonucleotide AS4,<br />
which targets nucleotides 1496-1513 of Pokemon mRNA, was proven as the most potent compound.<br />
As4 down-regulated the expression of Pokemon-GFP fusion protein to 22% at 40nm for 24hr.<br />
Reference<br />
[1] Barna M, Hawe N, Niswander L, Pandolfi PP. Nat Genet, 2000,25,166.<br />
[2] He X, Dave VP, Zhang Y, et al. Nature, 2005, 433, 826.<br />
[3] Costoya JA, Hobbs RM, Barna M, et al. Nat Genet, 2004, 36, 653.<br />
[4] Ye BH, Cattoretti G, Shen Q, et al. Nat Genet,1997,16, 161.<br />
[5] Koken MH, Reid A, Quignon F, et al. Proc Natl Acad Sci U S A,1997,94,10255.<br />
[6] Chen WY, Zeng X, Carter MG, et al. Nat Genet,2003,33,197.<br />
[7] Maeda T, Hobbs RM, Merghoub T, et al. Nature, 2005, 433.<br />
[8] Maeda T, Hobbs RM, Pandolfi PP. Cancer Res, 2005, 65, 8575.<br />
[9] Dove A. Nature Biotechnolog, 2002, 20, 121.<br />
[10] Wang H, Parasad G, Buolamwini, et al. Curr Cancer Drug Targets, 2001,1,177<br />
[11] Agrawal S, Kandimalla ER. Curr Cancer Drug Targets, 2001, 1, 197<br />
[12] Opalinska JB, Gewirtz AM, Nat Rev Drug Discovery, 2002, 1, 503<br />
[13] Hoen PAC, Rosema BS, Commandeur JNM, et al. Eur J Biochem,2002, 269, 2574<br />
311<br />
1, 3
P-158<br />
ANTISENSE THERAPY TARGETING POKEMON ONCOGENE IN MCF-7 CELL<br />
Nan Zhang 1, 2 , Wen-Peng Li 2 , Zhen-Hua Xie 2 , Yu-Yang Jiang 1, 2 *, Yu-Fen Zhao<br />
1<br />
Key Laboratory of Bioorganic Phosphorus Chemistry and Chemical Biology (Ministry of Education), Department of<br />
Chemistry Tsinghua University, Beijing, 10084, P. R. China<br />
2<br />
Key Laboratory for Chemical Biology of Guangdong Province, Shenzhen Graduate School of Tsinghua University,<br />
Shenzhen, 518055, P. R. China<br />
3<br />
Key Laboratory for Chemical Biology of Fujian Province, Department of Chemistry Xiamen University, Xiamen,<br />
361005, P. R. China<br />
This study was undertaken to investigate the role of Pokemon oncogene in MCF-7 (human<br />
adenocarcinoma cancer) cells growth and the potential of Pokemon as a target for cancer therapy. An<br />
18-mer antisense oligonucleotide AS4 (TTCAGGTCGTAGTTGTGG, targeting 1496-1513 site of<br />
Pokemon mRNA) was proven as a potent inhibitor of Pokemon expression in our previous work. In<br />
this study, we transfected AS4 to MCF-7 cells and confirmed the Pokemon mRNA and protein level<br />
by RT – PCR and Western Blot. Furthermore, the cell cycle was analyzed by flow cytometer. G2/ M<br />
arrest was observed when the cells were treated with antisense oligonucleotide at 100nM for 48 h.<br />
We also found the P53 protein upregulation due to Pokemon inhibition. Our result suggests that<br />
Pokemon inhibitor may be a novel approaches to human cancer therapy.<br />
References<br />
[1] Dove A. Nature Biotechnolog, 2002, 20, 121.<br />
[2] Wang H, Parasad G, Buolamwini, et al. Curr Cancer Drug Targets, 2001,1,177<br />
[3] Agrawal S, Kandimalla ER. Curr Cancer Drug Targets, 2001, 1, 197<br />
[4] Opalinska JB, Gewirtz AM, Nat Rev Drug Discovery, 2002, 1, 503<br />
[5] Barna M, Hawe N, Niswander L, Pandolfi PP. Nat Genet, 2000,25,166.<br />
[6] He X, Dave VP, Zhang Y, et al. Nature, 2005, 433, 826.<br />
[7] Costoya JA, Hobbs RM, Barna M, et al. Nat Genet, 2004, 36, 653.<br />
[8] Ye BH, Cattoretti G, Shen Q, et al. Nat Genet,1997,16, 161.<br />
[9] Koken MH, Reid A, Quignon F, et al. Proc Natl Acad Sci U S A,1997,94,10255.<br />
[10] Chen WY, Zeng X, Carter MG, et al. Nat Genet,2003,33,197.<br />
[11] Maeda T, Hobbs RM, Merghoub T, et al. Nature, 2005, 433.<br />
[12] Maeda T, Hobbs RM, Pandolfi PP. Cancer Res, 2005, 65, 8575.<br />
312<br />
1, 3
P-162<br />
THE POSITIVE AND NEGATIVE ELECTROSPRAY IONIZATION (ESI) MASS<br />
SPECTROMETRY OF 1-(N-ETHOXYCARBONYLAMINO)<br />
ARYLMETHYLPHOSPHONIC MONOESTERS<br />
Yuan Ma*, Wei Liu, Yufen Zhao<br />
Key Laboratory of Bioorganic Phosphorus Chemistry and Chemical Biology (Ministry of Education), Department of<br />
Chemistry, Tsinghua University, Beijing 100084, China<br />
1-Aminoalkylphosphonic acids are not only important phosphorus analogues of amino acids, but<br />
also one type of naturally occurring amino acids. The positive and negative ion mass spectrometric<br />
fragmentations of 1-(N-ethoxycarbonylamino)arylmethylphosphonic monoesters have been<br />
investigated under electrospray ionization conditions. In the positive ion mass spectrometry, the<br />
protonated title compounds predominantly eliminate a phosphite monoester via a four-membered<br />
ring hydrogen rearrangement to yield protonated N-ethoxycarbonyl arylmethylimines as key<br />
intermediate fragment ions, which could further undergo four-, six-, or eight-membered ring<br />
rearrangements to produce mainly N-substituted/unsubstituted arylmethylimine ions. It is interesting<br />
to note that the protonation of 1-(N-ethoxycarbonylamino)arylmethylphosphonicmonoesters<br />
occurred in their arene rings. On the other hand, in the negative ion ESI mass spectrometry, the<br />
deprotonated title compounds favored to initially form phosphonic-carboxylic mixed anhydrides as<br />
the key intermediate fragment ions by loss of a molecular of ethanol, and they further eliminated CO<br />
or CO2, respectively, to give rise to deprontonated three- and four-membered nitrogen and<br />
phosphorus containing heterocyclic fragment ions.<br />
Et<br />
O<br />
N P OR<br />
ArH<br />
O<br />
OH<br />
[M+H] +<br />
+<br />
O<br />
H<br />
O<br />
OR<br />
- HP<br />
OH<br />
313<br />
Et<br />
O N<br />
+<br />
ArH<br />
Scheme 1. The initial positive-ion fragmentation pathway of the title compounds.<br />
Et O<br />
H<br />
O<br />
P<br />
OR<br />
O<br />
O - Ar<br />
N<br />
[M-H] -<br />
-EtOH<br />
O<br />
O<br />
N -<br />
Ar<br />
O<br />
P<br />
OR<br />
O
P-197<br />
THE SYNTHESIS AND BIOLOGICAL EVALUATION OF BENZAMIDE RIBOSIDE AND<br />
ITS PHOSPHORDIAMIDATE PRODRUG<br />
Jianning Zhou 1,2 , Nan Zhang 1 , Chunyan Tan 1 , Jian Fan 1 , Chun Guo 2 & Yuyang Jiang 1*<br />
1.The Key Laboratory of Chemical Biology, Guangdong Province, The Graduate School at Shenzhen, Tsinghua<br />
University, Shenzhen 518055, China<br />
2. School of Pharmaceutical Engineering, Shenyang Pharmaceutical University, Shenyang 110016, China.<br />
Abstract: Benzamide riboside [BR, (1-β-D-ribofuranosyl) benzene-3-carboxamide], a novel<br />
C-glycoside analogue of nicotinamide riboside, has been studied because of its excellent cytotoxic<br />
activity. BR is metabolized intracellularly in malignant cells to its active metabolite benzamide<br />
adenine dinucleotide (BAD), which inhibits the key enzyme of guanylate biosynthesis inosine<br />
5 ` -monophosphate dehydrogenase (IMPDH), resulting in the inhibition of cell proliferation.<br />
In order to overcome the problem of drug resistance and the first phosphorylation, we designed<br />
and synthesized the benzylphosphordiamidate (1a) as the prodrug to deliver phosphorylated<br />
benzamide riboside analogs into cells. However, the revaluation shows that 1a has lower<br />
biological activity (IC50>200μM) compared to BR, which might be explained by the fact that 1a<br />
could only serve as the BR depot form and could not be metabolized to the phosporylatd benzamide<br />
riboside. The synthetic route of 1a is as follows:<br />
HO<br />
HO<br />
O<br />
HO<br />
OH<br />
D-Ribose<br />
Br<br />
O<br />
HO OH<br />
1<br />
3<br />
COOH<br />
O<br />
OH<br />
NH 2<br />
OBn<br />
BnO<br />
Br<br />
4<br />
HO<br />
2<br />
O<br />
N<br />
OBn<br />
O<br />
O<br />
b O<br />
c NHBn<br />
O<br />
d<br />
O O<br />
6<br />
O<br />
a<br />
NH 2<br />
BnHN<br />
OBn<br />
O<br />
P<br />
O<br />
BnO OBn<br />
5<br />
O<br />
314<br />
OH<br />
O O<br />
7<br />
N<br />
O<br />
O<br />
HO<br />
NH 2<br />
BnHN<br />
O<br />
HO OH<br />
1<br />
O<br />
P<br />
O<br />
NHBn<br />
O<br />
O<br />
HO OH<br />
Reagents and Conditions: a) nBuLi, THF, 5, -85 ℃ 3h;<br />
b) (MeO)2CMe2, acetone, pTSA, rt; c) POCl3, Py, 0℃<br />
8h then BnNH2, Et3N, rt, 2h; d) HCOOH/H2O, THF, 0℃.<br />
Acknowledgement: We gratefully acknowledge the National Science Foundation of China<br />
(20472043, 20572060, 20672068), the Project of Science and Technology of Guangdong Province<br />
( 2005A11601008) for support of this work.<br />
1a<br />
NH 2<br />
O<br />
NH 2
Symposium 7<br />
Phosphorus Chemistry in Agriculture, Industry and<br />
Materials Science
KL-12<br />
OVERVIEW ON OP METABOLISM CHEMISTRY AND ITS RELATIONSHIP TO<br />
BIOLOGICAL AND TOXIC ACTIONS<br />
Philip W. Lee<br />
DuPont Agricultural Products, Experimental Station E402, Wilmington, DE 19880-0402, USA<br />
Email: Philip.W.Lee@usa.dupont.com<br />
Organophosphorus compound (OP) is a large diverse class of molecules with broad range of<br />
chemical reactivity and biological properties. In addition to human drug activity, OPs are also<br />
important agrochemicals and industrial chemicals such as flame retardants, plasticizers, and<br />
catalysts. Organophosphates insecticides (such as dichlorvos, mevinophos) and chemical warfare<br />
agents such as diisopropyl phosphorofluoridate (DFP) are potent acetylcholinesterase (AChE)<br />
inhibitors. On the other hand, phosphorothioate esters (P=S) such as parathion, chlorpyrifos are<br />
poor AChE inhibitors, but require metabolic activation to the corresponding oxon (P=O) for<br />
insecticidal actions. The mode of action of glyphosate, the best known organophosphorus<br />
herbicide, is the binding to 5-enolpyruvylshikimate-3-phosphate synthase (EPSPS), thereby<br />
inhibiting plant amino acid biosynthesis. Detoxification via N-aceteylation reaction is a proposed<br />
mechanism to develop glyphosate resist crops. The mode of actions of organophosphate fungicides<br />
compounds are not well defined, but apparently affect cell wall biosynthesis.<br />
The metabolic oxidative desulfuration of phosphorothioate to the corresponding phosphate is one<br />
of the most extensively studied metabolic reactions. This metabolic activation reaction, observed in<br />
both chemical and biological systems, is catalyzed by cytochrome P450 enzyme, via the formation of<br />
activated [P-S-O] intermediate. Other metabolic detoxification reactions involve chemical and<br />
enzymatic hydrolysis of the phosphate esters. Inhibition of esterase enzymes have been identified as<br />
the mode of action of delay neurotoxicity.<br />
This presentation provides an overview of the chemical reactivity, metabolic pathway and mode<br />
of toxic action of several selected OP compounds, and how these metabolic reactions affect the<br />
biological activity and toxicity of this important class of chemicals.<br />
315
IL-33<br />
FOOD SAFETY: MONITORING OF ORGANOPHOSPHATE PESTICIDE RESIDUES IN<br />
CROPS AND FOOD<br />
Canping Pan<br />
College of Applied Chemistry, China Agricultural University, Beijing 100094, P.R.China<br />
Email: canpingp@cau.edu.cn<br />
There are more than 40 major organophosphate (OP) pesticides used globally today, to control<br />
wide range of insect pest species in agriculture, homes, gardens, and in veterinary practice. OP<br />
insecticides exhibit potent acute and/or subchronic toxicity to mammals. Both OP and carbamates<br />
insecticides are potent acetylcholinesterase (AChE) inhibitors and they are the first priority group of<br />
pesticides reviewed under the US Food Quality Protection Act. US EPA had begun the risk<br />
management program with the OP insecticides since August 1996. The final draft report on the<br />
cumulative risk assessment of OP pesticides was issued in August 2006.<br />
OP pesticide residues in crops, food and food-by-products (residues exceed the Maximum<br />
Residue Levels MRL)is both a health and international trade issue. This is a difficult problem<br />
especially the use and MRL of some of the key OP products are either withdrew or revoked recently.<br />
This presentation provides an overview of the development of the OP residues analytical method at<br />
the China Agricultural University (CAU) to monitor OP residues in crops and food in China. New<br />
technologies, such as molecular imprinting (MIP) will be addressed in this presentation. Our<br />
standard method includes solid phase matrix dispersion or GPC cleanup methods. A standard<br />
protocol (NY/T 761), originally from US CDFA, was adopted. The current internationally accepted<br />
and widely used “QuEChERS method” was also successfully validated at CAU on GCMS.<br />
This presentation will discuss the residue analytical method design, GCMS and/or HPLC-MS<br />
method validation and the storage stability of selective OP residues in crops and processed<br />
commodities. Finally, the OP insecticides residues monitoring status in Chinese vegetables<br />
collected in the past several years will be addressed.<br />
316
IL-34<br />
THE ROLE OF PHOSPHORUS IN CROP PROTECTION: EXPERIMENTAL AND<br />
COMMERCIAL DISEASE AND WEED CONTROL AGENTS<br />
Roger G. Hall<br />
Syngenta Crop Protection, Switzerland<br />
Although the importance of Organophosphate insecticides is steadily declining, Phosphorus still<br />
plays an important role in Crop Protection. Glyphosate continues to dominate the herbicide market,<br />
due in most part to the recent introduction of glyphosate-tolerant crops. The herbicide<br />
Phosphinothricine, a smaller product in terms of sales, can also be used on crops engineered for<br />
tolerance. But, where are the new Crop Protection products containing phosphorus?<br />
Plants play a key role in the synthesis and production of important amino acids. Inhibitors of<br />
amino acid biosynthesis which incorporate phosphorus in the molecule, offer excellent opportunities<br />
to find new, selective weed control agents. For example, the phosphonic acids 1 are potent,<br />
nanomolar inhibitors of the enzyme Imidazole Glycerol Phosphate Dehydratase and display<br />
herbicidal activity. The phosphine oxide 2 has been reported to inhibit the enzyme Aceto Lactate<br />
Reducto Isomerase and shows weak herbicidal activity. The phosphonic acid 3 inhibits the enzyme<br />
Tryptophan Synthase and also shows herbicidal activity. We have also sought to prepare inhibitors of<br />
Glutamine Synthetase such as 4 with more potent herbicidal activity than Phosphinothricine. It thus<br />
appears that Phosphorus offers more opportunities to identify products for the control of weeds rather<br />
than diseases. This lecture will discuss some recent research in these areas, and attempt to answer the<br />
question raised above.<br />
H<br />
N<br />
N<br />
N<br />
OH<br />
R<br />
1<br />
R = CH2, O, NR 1 , S<br />
S<br />
OH<br />
3<br />
P(O)(OH) 2<br />
P(O)(OH) 2<br />
317<br />
H3C P<br />
O<br />
H3C HO P<br />
O<br />
HO<br />
OH<br />
2<br />
O<br />
4<br />
CO 2 H<br />
NH 2<br />
CO 2 H
IL-35<br />
THE USE OF OP AND DEVELOPMENT OF NEW ORGANOPHOSPHORUS<br />
AGROCHEMICALS IN CHINA<br />
Hong-wu He<br />
Key Laboratory of Pesticide and Chemical Biology, Ministry of Education; and College of Chemistry, Central China<br />
Normal University, Wuhan 430079, China<br />
Phosphorus-containing agrochemicals have made a major contribution to the advancement of<br />
agriculture in China, because of their high efficacy and low prices. Almost 70% of agrochemicals in<br />
China were organophosphorus compounds and 70% of phosphorus-containing agrochemicals were<br />
insecticides during 1990 to 2002. OP insecticides have great economic importance for Chinese<br />
Pesticide Industry, but the problem of them with toxicological problems or unacceptable residues in<br />
the edible agricultural product have become as reasons for withdrawals of some OP insecticides from<br />
the market of China. In order to meet the increasing China’s requirements on food quality/safety,<br />
environment safeguard, the amount of high-toxicity OP products was limited from 2002 as the result<br />
of policies from authorities in China. High-toxicity OP products are gradually being displaced by low<br />
–toxicity OP products or other new synthetic agrochemicals.<br />
China is emerging as the second largest country in pesticide production and usages. R&D for<br />
environment friendly agrochemicals are becoming more and more important in China.<br />
Agrochemical Research Center and innovation system were preliminarily established in China during<br />
1996-2000 under the financial support from state government. R&D for new agrochemical has made<br />
great progresses in recent years, 21 new agrochemicals as patent products have been developed and<br />
got temporary registration from ICAMA. Several low toxicity organophosphorus compounds<br />
including insecticide, herbicide, fungicide and anti-TMV agent are being developed in China.<br />
α-(Substituted phenoxyacetoxy ) alkylphosphonate II as a kind of potential agrochemicals was<br />
founded on the basis of the study of a series of α -oxophosphonic acid derivatives I in our Lab.<br />
α-(Substituted phenoxyacetoxy ) alkylphosphonates showed a broad structure –activity-range. They<br />
could exhibit much different biological activity such as plant growth regulating activity, insecticide<br />
activity, fungicidal activity and herbicidal activity by the chemical modification of substituents in<br />
parent compound. Such as some compounds II exhibited notable herbicidal activity[1,2]and were<br />
demonstrated as a effective inhibitor of pyruvate dehydrogenase complex from plant ( in vitro )*. In<br />
order to evaluate the commercial potential as herbicide, some compounds with low acute toxicity<br />
were evaluated in the field. Field tests showed that they exhibited a potent activity against<br />
broad-leaved weeds at the rate of 150-450g /ha in lawn, wheat and zeamx field.<br />
Acknowledgments<br />
Financial support by National Basic Research Program of China (2003CB114400) and NNSFof<br />
China ( 20372023)<br />
References<br />
[1] H.W.He and Z.J.Liu, Chinese Journal of Organic Chemistry, 2001, 21 (11), 87<br />
[2] H.W. He*, T. Wang and J. L. Yuan, Journal of Organometallic Chemistry, 690, 2005, 2608-2613<br />
318
IL-36<br />
CURRENT STATUS OF ORGANOPHOSPHORUS<br />
INSECTICIDE AND STEREOCHEMISTRY<br />
Mitsuru Sasaki<br />
Division of Bio-systems Chemistry, Graduate School of Science and Technology,Kobe University, Kobe, Hyogo<br />
657-8501, Japan . E-mail: msasaki@kobe-u.ac.jp<br />
Organophosphorus agrochemicals including organophosphorus insecticide are still useful tools for<br />
crop protection. For instance, organophosphorus insecticides have been widely used in terms of<br />
their cost/performance with broad insecticidal spectra.<br />
There are organophosphorus agrochemicals having chirality at the phosphorus or at the carbon<br />
center in the molecule. The importance of chirality in organophosphorus agrochemicals is well<br />
recognized in most aspects of their chemistry, biochemistry, biology and toxicology.<br />
Thus reviewing the synthesis, selective toxicity and stereoselectivity of organophosphorus<br />
agrochemicals not only organophosphorus insecticide but also organophosphorus fungicide or<br />
herbicide will be firstly done on the following topics; absolute configuration-insecticidal activity<br />
relationships of the enantiomers of organophosphorus insecticides, asymmetric rule on the AchE<br />
inhibition by organophosphorus insecticides, and biological activity of the optical isomers of some<br />
phosphoramidothioates and 1-hydroxyethylphosphinic acid.<br />
Then recent developments on the methodology for preparing optically active phosphorus<br />
compounds having biological activity will be discussed in terms of asymmetric synthesis of<br />
organophosphorus synthetic intermediates with asymmetric induction at phosphorus center in the<br />
molecule, conformational analysis of phosphorus-containing heterocycles, and stereochemical course<br />
in the conversion of 1-aminoalkylphosphonic acids to 1-hydroxyalkylphosphonic acids.<br />
319
IL-37<br />
GLOBAL USE OF ORGANOPHOSPHORUS PESTICIDES<br />
William H. Hendrix, III,<br />
Technical Expert, Dow AgroSciences, Indianapolis, IN USA<br />
Organophosphates (OP) are the most widely used class of insecticides in the world and have<br />
helped revolutionize insect control. Providing broad spectrum insect control they are used in the<br />
home, the garden, in agriculture, and in veterinary practice. Despite challenging regulatory pressure,<br />
they continue to see new uses and formulations that increase their efficacy, selectivity and safety.<br />
History<br />
First recognized in 1854, the insecticidal properties were not defined until Tetraethyl<br />
pyrophosphate (TEPP), which was developed in Germany during World War II as a by-product of<br />
nerve gas development. In the 1940’s, the first wave of commercially available OPs, including<br />
parathion, reached the market. In 1965, the world’s most widely used OP, chlorpyrifos, was<br />
introduced. Today, we continue to see new uses and formulations being developed in all major<br />
markets.<br />
Distribution<br />
OPs are manufactured by most multinational companies and many regional generic manufacturers.<br />
There are roughly 100 OPs registered for use around the world and, in general, they are used in every<br />
country. It is important to remember that all OPs are not alike. There is considerable variation<br />
especially in toxicity classifications. Although some countries are phasing out or reducing most OP<br />
use, many other countries, such as China, are moving to phase out only the more toxic (Tox Class 1)<br />
molecules. External influencers impacting the sale and distribution of OPs include government<br />
regulators, food chain, and health/environmental non-governmental organizations.<br />
Major Markets<br />
OP molecules are used to protect man, his crops, and his home in a variety of ways. Their<br />
formulation flexibility and broad spectrum control have made them popular choices for a variety of<br />
uses. For example, OPs have been used for vector control as a fog, as a wall treatment or<br />
incorporated into the plastic used for bed netting in addition to their more traditional uses in<br />
agriculture. The major markets will be examined by country and by use pattern contrasting changes<br />
over time.<br />
New Developments<br />
As farming continues to adapt to provide more sustainable options, so have the OPs. Because of<br />
increasing concerns over residues, application timing has been scrutinized to make sprays as dormant<br />
or early season applications. New formulations and delivery options have been developed to increase<br />
handler safety or to mitigate environmental concerns. Microencapsulated formulations, for example,<br />
have increased safety profiles, reduced odor and dust, all while providing enhanced control.<br />
Because of their broad-spectrum control, formulation and application flexibility, OPs will continue to<br />
have an important insect management tool for the foreseeable future.<br />
320
O-85<br />
“GREEN” WAYS OF PHOSPHORUS COMPOUNDS PREPARATION<br />
Budnikova Yu.H. a* , Krasnov S.A., Graznova T.V., Tomilov A.P. b , Turigin V.V. b , Magdeev I.M.. a , Sinyashin O.G. a<br />
a Institute of Organic and Physical Chemistry of Russian Academy of Sciences, Kazan, Russia<br />
b GOSNIIOHT, Moscow, Russia. E-mail: yulia@iopc.knc.ru<br />
The existing industrial technology of synthesis of organophosphorous compounds is obsolete, as it<br />
is based on the use of chlorine and chloride of phosphorus thus causing serious environmental<br />
problems and main expenses of manufacture. Electrolysis presents a promising technology for<br />
chemical conversions under ambient conditions without the use of either toxic or hazardous reagents;<br />
it can minimise both the number of chemicals employed and the number of byproduct streams. The<br />
new general electrochemical one-phase way was developed for the of phosphorus compounds<br />
preparation, such as tertiary and primary phosphines, trialkyl phosphates, including trioctylphosphate,<br />
phosphorous and hypophosphorous acid, etc. Scientific foundations for new electrochemical<br />
technologies with obtaining pilot lots of substances and materials from white phosphorus were<br />
developed.<br />
C athode A node<br />
R O -<br />
P 4<br />
+ 2 e -2 e<br />
P 4<br />
R'<br />
+ n e<br />
Pb-cathode<br />
in situ<br />
R O H<br />
(H 2 O )<br />
(R O ) 3 P O<br />
[(i-R O ) 2 P ( O ) ] 2 O<br />
H 3 P O 3<br />
RPH 2<br />
CH 3 COOK/CH 3 COOH<br />
+ n e<br />
Pb-cathode<br />
321<br />
[P H 3 ]<br />
I -<br />
I +<br />
R'<br />
DMSO/KOH<br />
90% or<br />
80% or<br />
80%<br />
R 3 P<br />
M n+ L + ne M 0 L L = bipy, solvent<br />
M 0 L + P 4 product [M-P]<br />
Cathode<br />
+2e<br />
Zn0<br />
PhX<br />
Zn2+<br />
PhZnX<br />
P 4<br />
Zn2+<br />
Ph3P (80%)<br />
Anode-Zn<br />
-2e
Construction of the integrated laboratory electrolyzer of filter-press type<br />
Acknowledgments: RFBR (04-03-32830, 05-03-08039 ofi-p), INTAS.<br />
Reference<br />
[1] Budnikova Yu.H., et all. J.Organomet.Chem., 690, 2416-2425, 2005<br />
[2] Patents for inventions RU №№ 2199545, 2221805<br />
322
O-86<br />
PHOSPHATE - AN IMPORTANT ELEMENT IN THE AGRICULTURAL AND<br />
ENVIRONMENTAL SPHERE<br />
Dirk Freese<br />
Brandenburg University of Technology Cottbus P.O. Box 101344, D-03013 Cottbus, Germany E-mail:<br />
freese@tu-cottbus.de<br />
The Phosphate Cycle Phosphate is indispensable for all forms of life because of its genetic role in<br />
ribonucleic acid and function in energy transfers via adenosine triphosphate. In natural ecosystems<br />
P is usually the life-limiting element due to its low availability. Of the Phosphate in the<br />
soil-plant-animal system, commonly over 90% is in the soil and less than 10% enters the<br />
plant-animal life cycle. Phosphate taken up by plant roots is either in the H2PO4 - or HPO4 2- form.<br />
The amount of each form present depends on the soil solution pH. At pH 7.22 there are equal<br />
amounts of these two forms. Below this pH, H2PO4 - is the main form. Soluble P fertilisers applied<br />
to the soil are very rapidly changed to less-soluble compounds that, with increasing time, become<br />
less and less available to plants.<br />
Phosphate as an essential element of life is involved in versatile processes of terrestrial and<br />
aquatic environments. Considering the use of P in agriculture its application as fertilizer to arable<br />
lands often improves crop production. But the extent of P fertilisation varies considerably between<br />
developing countries and industrial nations. In general, P deficiency in agriculture is typical of the<br />
first group, whereas high application rates of P fertilizer in the latter one have induced some<br />
environmental issues. In most of sub-Saharan Africa, where per capita food production as been<br />
declining in recent years, fertilizer additions of this element for food crops are fraction of the rate of<br />
removal of phosphate in the harvested crops. The soils have been mined of phosphate for years,<br />
with the result that in many areas lack of this element is the first limiting factor in food-crop<br />
production. On the other side the continued application of P fertilizer can produce detrimental<br />
effects in both the terrestrial and aquatic environments. But in any discussion of the impact of soil<br />
and fertilizer Phosphate on the environment, the detrimental effects must be considered along with<br />
the benefits<br />
In modern agricultural economies there are two aspects that should be taken into account: saving<br />
utilisation of the limited resources of rock phosphates and fertilisation practices have to be geared to<br />
both the optimal plant nutrition and a sustainable land use as an important part of environmental<br />
protection policies.<br />
Forms of Phosphate in soil<br />
Inorganic and organic P fertilisation over the last decades lead to a considerable P accumulation<br />
in soils. The total P content in soils is in the range 100 to 3000 mg/kg almost entirely as<br />
orthophosphate. The proportion of P in solution is only
Fate of Phosphate to soils: Sorption<br />
The phosphate sorption process in soils can be subdivided into three categories: adsorption as the<br />
binding of P on the surfaces of solid soil constituents, diffusion of P into solid soil constituents and<br />
precipitation as the forming of a P-rich solid phase. In the literature the term sorption is used instead<br />
of adsorption because it covers the fast surface reaction of adsorption and the long term reaction.<br />
The kinetics of P sorption has received considerable attention over the past years. The initial fast P<br />
sorption kinetics is presumably due to reaction with the surface sites of metal (hydr)oxide particles<br />
that are exposed to the solution phase. The slow reaction may be due to a slow diffusion into<br />
aggregates or due to the slow formation of phosphate containing mineral phases. The reversibility<br />
of P bound to soil is of interest with respect to both bio-availability and the risk of pollution of<br />
surface waters as a result of P run-off rather then translocation of P to deeper soil layers.Predicting<br />
the availability of P in soils: Desorption<br />
The assessment of phosphate bioavailability in soils and sediments is of interest in both<br />
agricultural and environmental systems. In agricultural soils, there is a need to predict the quantity<br />
of P that is available for plant growth, as opposed to the total amount of P in soil.<br />
In terms of biological availability, soil P is commonly divided into the following forms: i)<br />
directly soluble P (labile P), ii) reversibly adsorbed P and iii) strongly bound ("irreversibly fixed") P.<br />
In order to characterise P forms in soils and their bioavailability, a wide variety of methods have<br />
been proposed during the last few decades and the discussion about is still going on.<br />
Therefore some new methods will be presented especially designed to obtain a proper<br />
understanding of long-term soil P desorption kinetics. These approaches are suitable to discriminate<br />
between fast and slow pools of P release in soils.<br />
324
O-88<br />
PHOSPHATE REMOVAL AND RECOVERY WITH CALCINED LAYERED DOUBLE<br />
HYDROXIDES AS AN ADSORBENT<br />
Liang Lü a, b* , Zhaoliang Zhou a , Jing He b , Yulin Wang a , Guoqiang Wu a<br />
a<br />
West Branch of Zhejiang University of Technology, Zhejiang 324000, China<br />
b<br />
State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing 100029,<br />
China. E-mail: lianglv_qzxy@126.com; Fax: +86 570 8026549; Tel: +86 570 8026668<br />
Organic pollution in closed water bodies such as bays and lakes has been increasing by<br />
eutrophication, and removal of nutrient salts from the receiving water is an important consideration<br />
to control eutrophication. A major source of nutrient salts is domestic wastewater. A large amount of<br />
used phosphate finally reaches water environment as diluted waste, which often leads to pollution<br />
of the water environment. Phosphate is recognized as being one of the resources that will be lost in<br />
near future. It is of value to collect the finally disposed phosphates from effluents and drain water<br />
before further dispersion and dilution of them in the water environment. An adsorption process has<br />
been applied widely to treatment containment water, because the process has some advantages, such<br />
as less production of sludge and easy operation. A variety of adsorbents have been developed for<br />
phosphate removal, such as aluminum oxide, iron oxide, zirconium oxide, basic yttrium carbonate,<br />
and fly ash.<br />
Layered double hydroxides (LDHs), are a class of synthetic anionic clays whose structure can be<br />
described as containing brucite-like layers in which some of the divalent cations have been replaced<br />
by trivalent ions giving positively-charged sheets. This charge is balanced by intercalation of anions<br />
in the hydrated interlayer regions. The general formula is [M 2+1-x M 3+x (OH) 2 ] x+ (An - ) x /n·mH2O,<br />
where M 2+ and M 3+ are metal cations for example Mg 2+ and Al 3+ , that occupy octahedral sites in the<br />
hydroxide layers, An- is an exchangeable anion, and x is the ratio M 3+ /(M 2++ M 3+ ) and the layer<br />
charge will depend on the M 2+ /M 3+ ratio. The sorption of anions from aqueous solutions by<br />
structural reconstruction of calcined LDHs (denoted CLDH) is based on a very interesting property<br />
of these materials, the so-called memory effect. In our previous work, it was also indicated that the<br />
calcined LDH can effectively removal toxic anions (such as fluoride, chloride, bromide, and<br />
perchlorate) from water.<br />
In this work, the adsorption properties of CLDH for phosphate and the method of regeneration of<br />
this material were examined. The influences of CLDH structures, adsorbent dose, initial fluoride<br />
concentration, temperature and co-existing anions on the removal of fluoride have been investigated.<br />
It has been found that the LDHs with Mg/Al molar ratio of 2 represented the highest capacity to<br />
remove phosphate ion from aqueous solution at pH 6.0. Phosphate adsorbed on the CLDH was<br />
effectively desorbed at NaCl solution and the CLDH were reconstruction to LDH at the same time.<br />
The regenerated LDH could be calcined and reused repeatedly for the phosphate removal.<br />
Phosphate in the exhausted desorption solution was recovered as calcium phosphate by precipitation<br />
with Ca 2+ . The results suggest the possibility of an effective system for phosphate removal and<br />
recovery, which includes the following processes: adsorption, desorption, recovery of phosphate,<br />
and regeneration of the CLDH.<br />
325
O-89<br />
DEVELOPMENT, SCALEUP AND COMMERCIALISATION OF CATALYST LIGNDS<br />
Ranbir Padda and Gordon Docherty<br />
Rhodia UK Limited, P.O. Box 80, Trinity Street,<br />
Oldbury, West Midlands, B694LN, United Kingdom.<br />
Phone, +44-(0)-121-541-3278; Fax, +44-(0)-121-541-3346.<br />
E-mail:ranbir.padda@eu.rhodia.com<br />
Catalyst ligands are continually being developed by the academic community and industry with<br />
ever increasing turnover numbers, higher enantioselectivities etc. The types of catalysts and their<br />
scope of application are an immense area of activity e.g. child catalysts, achiral catalysts,<br />
phosphorus-based, nitrogen-based, phosphorus and nitrogen containing and so forth.<br />
Phosphine catalysts are a very important class of catalysts and we report on the development,<br />
scal-up and commercialisation of a number of ligands by Rhodia over the last 10 years. Recent<br />
examples include MeDuphos, patented by Dupont1, tetra-butyl diphosphiuo xylene patented by ICI2<br />
and BINAP (originally developed by Takasago). An in-depth discussion will highlight factors for<br />
consideration when developing and scaling-up synthesis of these ligands on an Industrial scale.<br />
References<br />
1. Patent US005008457 and US005329015A<br />
2. Patent WO 99/47528 and WO 99/47528<br />
3. Patent JP59020294(A2.<br />
326
O-90<br />
BLEACHING CHEMISTY OF TRIS(HYDROXYMETHYL)PHOSPHINE AND<br />
TETRAKIS(HYDROXYMETHYL)PHOSPHONIUM SULFATE<br />
Thomas Q. Hu a , Brian R. James b , Richard Chandra b , Eric Yu b and Dmitry Moiseev b<br />
a Pulp and Paper Research Institute of Canada, Vancouver, BC, Canada V6S 2L9<br />
b Department of Chemistry, Univ. of British Columbia, Vancouver, BC, Canada V6T 1Z1<br />
Research Institute of Canada, 3800 Wesbrook Mall,Vancouver, BC, Canada V6S 2L9.<br />
Phone: 1-604-222-3235; Fax.: 1-604-222-3207; E-mail: thu@paprican.ca<br />
Bleaching of lignin-rich wood pulps, an important industrial process for the production of<br />
low-cost papers, involves the non-selective, oxidative removal and/or reductive modification of<br />
lignin chromophores such as lignin coniferaldehyde and methoxy-pbenzoquinone. During our<br />
studies of a H2O-soluble, coppertris(hydroxymethyl)phosphine (THP) complex, Cu-P(CH2OH)3, as<br />
catalyst for the selective, H2-bleaching of such pulps, we discovered that the phosphine itself was an<br />
effective bleaching agent over an extremely wide range of process conditions. We also found that<br />
the commercially available tetrakis(hydroxymethyl)phosphonium sulfate (THPS),<br />
[P(CH2OH)4]2SO4, was equally effective. To support the commercialization of THPS as a bleaching<br />
agent for the paper industry, we have studied the aqueous reactions of THP with lignin model<br />
chromophores and isolated milled wood lignin. We have also determined the fate of phosphorus in<br />
the bleaching of a spruce thermomechanical pulp with THPS. This presentation will describe the<br />
results of these studies and discuss the potential application of THPS as a bleaching agent for the<br />
paper industry.<br />
327
O-91<br />
USE OF ION EXCHANGE COMPOSITES BASED OF TITANIUM AND ZIRCONIUM<br />
PHOSPHATES FOR CLEANING OF WATER SOLUTIONS<br />
Valery P. Nesterenko<br />
Belarusian National Technical University<br />
65, Nezavisimosty Avenue, 220027, Minsk, Republic of Belarus. E-mail: v.nesterenko@mail.ru<br />
In many cases creation of the effective systems for the cleaning of water solutions, polluted with<br />
radioactive elements and heavy metals, for example, realization of processes of extraction of<br />
radionuclides from wastes, deactivation and cleaning of wastewater, water preparation, is connected<br />
with necessity of use of sorption materials with given properties. Sorption processes have the<br />
advantages before other methods (for example, such as evaporation and precipitation), as they are<br />
more effective at large volumes of solution, do not bring in the difficulties, caused by corrosion of<br />
the equipment and in majority of cases provide additional clearing of corrosive impurity and<br />
products of division.<br />
The present work is dedicated to development of approaches for preparing, studying and using of<br />
new ion exchange composites. The thin layers of Ti(IV) and Zr(IV) phosphates have been<br />
synthesized by the method of ion molecular layering on the surfaces of carbon matrices.The<br />
obtained pellicular materials represent ionites similar to the Nucleosil ionites (Germany)due to a<br />
number of their properties. pH range of ionites functioning on a Ti(IV) phosphate base equals 1-8,<br />
on the base of Zr(IV) phosphate – 1-10. Physicochemical properties of the synthesized ion<br />
exchangers have been investigated by modern methods. Comparative characteristic of adsorption<br />
properties has been determined for a series of heavy metals. For example, statical exchange capacity<br />
of Titanium phosphate ionite (pH 2-7, 10-3 M solutions)of UO22+, Fe3+, Cd2+and MoO42- - ions<br />
is in the range of 0.1-1.8 mequ/g. It has been established that Zirconium phosphate ionites have<br />
1,5-2,0 times higher sorption activity asregards cations of d- and f-elements. Under the dynamical<br />
conditions, the processes of sorption and elution of the Pb2+ - ions have been studied on Zirconium<br />
phosphate ionite. Thus,the dynamical sorption capacity for 0,025 M Pb2+solution has been 130,5<br />
mg/g.<br />
The advantages of the synthesized phosphates ionites are the following: selectivity to the ions,<br />
forming heteropoly acids P(V), a greater (by one order) rate of establishing ion exchange<br />
equilibrium, saving of phosphates modifying agent. Realisation of ion exchange processes with<br />
application of the developing ionites is rather simple, which is notably important while extracting<br />
radionuclides. The synthesized ion exchangers are of represent practical interest because of their<br />
high radiation immunity and resistance to leaching. They may be employed with a view to ensure<br />
security of the environment as well and in case of their burial after utilization.<br />
It may be possible to use these ionites in processes of cleaning of sewage, extraction of value<br />
metals in hydrometallurgy as well as in other ion exchange technologies.<br />
References<br />
[1] V.P. Nesterenko. Invention Certificate No 623286 (1978).<br />
[2] V.P. Tolstoy. Uspekhi Khimii, 62, release 3, 260 (1993).<br />
[3] V.P. Nesterenko et al. Third International Technical-Practical Conference "Productive Reuse of Former Military Sites:<br />
Environmental and Economic Aspects of Demilitarization". Republic of Belarus, U.S. Department of Defense, Minsk<br />
(1996).<br />
328
O-92<br />
SELECTIVE CHROMIUM OLIGOMERISATION CATALYSTS WITH VARIOUS<br />
PHOSPHORUS LIGANDS<br />
Kevin Blann, John T. Dixon, Esna Killian, Hulisani Maumela, M., Chris Maumela, Ann E. McConnell, David H. Morgan,<br />
Mari_ Pretorius, Henriette de Bod, William Gabrielli, Alex Willemse, Pumza Zweni, Palesa Nongodlwana<br />
Sasol Technology (Pty) Ltd., R&D Division, 1 Klasie Havenga Road, Sasolburg 1947, South Africa<br />
kevin.blann@sasol.com<br />
Conventional ethylene oligomerisation reactions generally produce a mathematical distribution of<br />
LAO’s (linear alpha olefins). Since the market demand for each olefin cut differs, it remains an<br />
imperative in the co-monomer industry to develop new technologies for the selective<br />
oligomerisation of ethylene to valuable 1-alkenes such as 1-hexene[1] and 1- octene.[2] An added<br />
advantage of this approach is to have an oligomerisation system that is flexible in producing a<br />
specific 1-alkene as dictated by market demands.<br />
We report herein, a family of chromium-based catalyst systems utilising an array of phosphine<br />
ligands for the production of linear alpha olefins. Depending on the unique characteristics of the<br />
ligands utilised,[3][4] these catalysts can be tailored to provide unprecedented control over reaction<br />
selectivity. A detailed study on the requisite catalyst synthesis and modifications for these selectivity<br />
switches will be presented.<br />
1)Cr(Ⅲ)<br />
2)Ligand<br />
3)Activator<br />
Reference<br />
[1] Dixon, J.T., Green, M.J., Hess, F.M., Morgan, D.H. J. Organomet. Chem. 2004, 689, 3641.<br />
[2] Bollmann, A., Blann, K., Dixon, J. T., Hess, F. M., Killian, E., Maumela, H., McGuinness, D. S., Morgan, D. H.,<br />
Neveling, A., Otto, S., Overett, M. J., Slawin, A. M. Z., Wasserscheid, P., Kuhlmann, S. J. Am. Chem. Soc., 2004,<br />
126,14712.<br />
[3] Blann, K., Bollmann, A., Dixon, J.T., Hess, F.M., Killian, E., Maumela, H., Morgan, D.H., Neveling, A., Otto,<br />
S.,Overett, M.J. Chem Comm, 2005, 620.<br />
[4] Blann, K., Bollmann, A., Dixon, J.T., Hess, F.M., Killian, E., Maumela, H., Morgan, D.H., Neveling, A., Otto,<br />
S.,Overett, M.J. Chem Comm, 2005, 622.<br />
329<br />
and/or
O-94<br />
AN EFFICIENT CATALYTIC ASYMMETRIC SYNTHESIS AND BIOLOGICAL<br />
EVALUATION OF α-SUBSTITUTED AROYLOXYL PHOSPHONATES<br />
Hui Liu, Hongwu He and Wen-Jing Xiao*<br />
Key Laboratory of Pesticide and Chemical Biology, Ministry of Education, College of Chemistry, Central China Normal<br />
University, 152 Luoyu Road, Wuhan, Hubei 430079, China. E-mail: wxiao@mail.ccnu.edu.cn<br />
We have synthesized a series of optically active phenoxylacetyloxyl and aroyloxyl phosphonates<br />
in high enantiomeric purity via catalytic asymmetric hydrogenation using Rh(I)/(S,S)-Me-DuPHOS<br />
as the catalytic system in methanol. Most of the target compounds including their precursors are<br />
novel. The methodology described herein presents one of the most straightforward synthetic way to<br />
get these compounds. The biological study shows that aroyloxyl phosphonates with R-configuration<br />
possess excellent herbicidal activities against dicotyledons and can be used as potential herbicides.<br />
O<br />
MeO P<br />
MeO<br />
O<br />
O<br />
O<br />
Cl<br />
Cl<br />
Rh(I)/(S,S)-Me-DuPHOS<br />
MeOH, S/C=100,<br />
H 2 (4 atm), 15 o C, 12 h<br />
330<br />
O<br />
MeO P<br />
MeO<br />
O<br />
References<br />
[1] Horiguchi, M.; Kandatsu, M. Nature 1959, 184, 901.<br />
[2] (a) Allen, M. C.; Fuhrer, W.; Tuck, B.; Wade, R.; Wood, J. M. J. Med. Chem. 1989, 32, 1652. (b) Smith, W. W.;<br />
Bartlett, P. A. J. Am. Chem. Soc. 1998, 120, 4610.<br />
[3] (a) He, H.-W.; Liu, Z.-J. Chin. J. Org. Chem. 2001, 21, 878. (b) Wang, T.; He, H.-W. Synth. Commun. 2004, 34, 1415.<br />
(c) He, H.-W.; Liu, X.; Hu, L.; Wang, S.; Liu, Z. Phosphorus Sulfur Silicon, 2002, 177, 1651. (d) He, H.-W.; Wang, J.;<br />
Liu, Z.-J. Chin. Chem. Lett. 1994, 5, 35. (e) He, H.-W.; Liu, X.; Hu, L. M.; Wang, S.; Liu, Z.-J. Phosphorus Sulfur Silicon<br />
1999, 144, 633.<br />
O<br />
O<br />
Cl<br />
Cl
O-95<br />
CONTROLLED SYNTHESIS OF ORGANIC-INORGANIC MATERIALS DERIVED FROM<br />
PHOSPHOROUS COMPOUNDS. VARIABLE POROSITY, PHOTOINDUCED<br />
ELECTRON-TRANSFER AND HYDROGEN STORAGE<br />
Ernesto Brunet, Olga Juanes, Juan Carlos<br />
Rodríguez-Ubis Department of Organic Chemistry, Faculty of Sciences Universidad Autónoma de Madrid,<br />
28049-Madrid, Spain. E-mail: ernesto.brunet@uam.es<br />
The preparation of solid structures is more and more in the side of designing and predictive<br />
principles conceptually similar to those used in solution chemistry. [1] Provocative comments as<br />
famous as that of Maddox [2] are being rebuked by the results of thoughtful experiments within the<br />
rapidly maturing field of crystal engineering. [3] For example, the use of layered inorganic salts in<br />
which organic structures can be orderly deposited either by weak interactions or covalent bonds is a<br />
widespread technique to prepare tailored solids with coveted properties. [4] Zirconium phosphate [5]<br />
(ZrP) is an excellent example. It constitutes a lamellar template which we profusely use [6] to obtain<br />
a number of microcrystalline materials with outstanding properties, ranging from molecular<br />
recognition, [7] luminescence, [8] postsynthesis variable porosity, [9] chiral memory, [10] hydrogen<br />
storage [11] and electron transfer in the solid state. [12] In this communication past and recent results of<br />
our investigations will be reported.<br />
References<br />
[1] A. Dey, M. T. Kirchner, V. R.Vangala, G. R. Desiraju, R. Mondal, J. A. K. Howard, J. Am. Chem.<br />
Soc. 2005, 127, 10545.<br />
[2] J. Maddox, Nature 1988, 335, 201<br />
[3] P. Erk, H. Hengelsberg, M. F. Haddow, R. van Gelder, Cryst. Eng. Comm. 2004, 6, 474.<br />
[4] D. B. Mitzi, Chem. Mater. 2001, 13, 3283.<br />
331
[5] A. Clearfield, Z. K. Wang, J. Chem. Soc.,Dalton Trans., 2002, 2937.<br />
[6] E. Brunet, M. J. de la Mata, H. M. H. Alhendawi, C. Cerro, M. Alonso, O. Juanes, J. C. Rodriguez-<br />
Ubis, Chem. Mater. 2005, 17, 1424.<br />
[7] E. Brunet, M. Huelva, R. Vázquez, O. Juanes, J.C. Rodríguez-Ubis, Chem. Eur. J. 1996, 12, 1578.<br />
[8] E. Brunet, M. J. de la Mata, O. Juanes, J. C. Rodriguez-Ubis, Chem. Mater. 2004, 16, 1517.<br />
[9] E. Brunet, M. J. de la Mata, O. Juanes, J. C. Rodriguez-Ubis, Angew. Chem., Int. Ed. 2004, 43, 619.<br />
[10] E. Brunet, Chirality 2002, 14, 135.<br />
[11] E. Brunet, H. M. H. Alhendawi, C. Cerro, M. J. de la Mata, O. Juanes, J. C. Rodríguez-Ubis,<br />
Angew. Chem. Int. Ed. 2006, 45, 6918.<br />
[12] E. Brunet, M. Alonso, M. J. de la Mata, S. Fernandez, O. Juanes, O. Chavanes, J. C. Rodriguez-<br />
Ubis, Chem. Mater. 2003, 15, 1232<br />
332
O-108<br />
STUDY ON THE PREPARATION OF WHEAT STARCH PHOSPHATE WITH LOW<br />
DEGREE OF SUBSTITUTION<br />
Liu Zhongdong*, Yang Yan<br />
Henan University of Technology, ZhengZhou South Songshan Road 140#, 450052<br />
liuzhongdong2345@163.com<br />
The starch phosphate is one kind of modified starch products, which is also a kind of anionic<br />
starch. Compared to the original ones, the aleurone of starch phosphate is not liable to the<br />
degradation of bacteria, having a higher viscosity, transparency and glueyness. In the food<br />
processing, the starch phosphate is used as the emulsifier, thickener or stabilizer. For its well<br />
stability of freezing-melting, the starch phosphate is especially suitable to be applied in the frozen<br />
foods. The starch phosphate is used for the paper sizing in the paper manufacturing industry and in<br />
the textile industry, it is used for the fabric sizing, dressing, printing and dying, both of which has a<br />
better result than the original starch. In addition, the starch phosphate can be used as adhesive,<br />
sedimentation agent, drug bulking agent and detergent etc.<br />
By means of proper experimental design, the method of response surface is applied to fit the<br />
function relationship between factors and response value using multiple quadratic regression<br />
equations and to find out the best technological parameter to solve the multivariate problem by the<br />
analysis of the regression equations. At the present time, it is one of the most effective methods in<br />
the synthetic technique of chemistry industry.<br />
In order to improve the performance of wheat starch and to broaden its using range, the response<br />
surface analysis is used in this article to optimize the response condition of the starch phosphate,<br />
using the sodium pyrophosphate as catalyst in esterification to prepare the wheat starch phosphate,<br />
to explore the influence of the pH, temperature, operation time and the amount of phosphate to the<br />
viscosity characteristic of the products. The best technological conditions are determined by means<br />
of response surface design, and the perfect result is obtained after the nature research of all the<br />
products. Compared to the original ones, the wheat starch phosphate products which are prepared<br />
through the response surface analysis has a satisfied value of the water retentiveness, the thickening<br />
strength and the freeze-thawing stability, while its gelatinization temperature has a great reduction.<br />
This research serves as reference to find out how to raise the economic benefits of wheat further<br />
processing and how to handle its bulk by-products especially for China, the most important wheat<br />
producing area.<br />
333
P-8<br />
STRUCTURAL CHARACTERISTIC AND ELECTRODE ACTIVITIES OF<br />
PHOSPHORUS INCORPORATED TETRAHEDRAL AMORPHOUS CARBON FILMS<br />
Aiping Liu, Jiaqi Zhu, Jiecai Han, Huaping Wu<br />
Center for Composite Materials, Harbin Institute of Technology, Harbin 150080, China<br />
The conductive phosphorus incorporated tetrahedral amorphous carbon (ta-C:P) films were<br />
deposited on conductive p type Si wafers by filtered cathodic vacuum arc (FCVA) technology with<br />
phosphine (PH3) as the dopant source. The structural characteristics were investigated by X-ray<br />
photoelectron spectroscopy (XPS), Raman spectroscopy and Fourier transform infrared (FTIR)<br />
spectroscopy. The electrochemical behaviors of ta-C:P films as electrodes were examined by cyclic<br />
voltammetry (CV) and differential pulse voltammetry (DPV). The results showed that the inorganic<br />
films represented amorphous structure with high tetrahedral bonds by Raman spectra. XPS data<br />
indicated that the fraction of sp2-hybridized carbon atoms increased with PH3 incorporated, which<br />
contributed to the improvement of conductivity. There was a possibility of carbon and phosphorus<br />
bonds inferred from the activated vibrational bands detected from the IR spectra. The ta-C:P films<br />
as electrodes exhibited excellent electrochemical activity compared with boron doped diamond<br />
(BDD) electrodes, including a large electrochemical potential window, a low background current<br />
and a considerable electrochemical activity toward ferricyanide reduction and metal ion analysis.<br />
These characteristics demonstrated greatly potential application of the ta-C:P film electrodes for<br />
electrochemical analysis and waste water treatment.<br />
334
P-12<br />
ELECTRON CONDUCTING MATERIALS ON THE BASIS OF<br />
PERFLUOROPHENYLENE-PHOSPHANES<br />
Berthold Hoge, Sonja Hettel, Nina Rehmann<br />
Klaus Meerholz Universität zu Köln, Greinstr. 6, 50939 Köln, Germany. E-mail: b.hoge@uni-koeln.de<br />
Organic semiconducting materials are of great interest with respect to their applications as<br />
organic light-emitting diodes (OLEDs), organic field-effect transistors (OFETs) and photovoltaic<br />
cells. Compared to the p-type semiconductors such as pentacene, electron-transporting (n-type)<br />
semiconductors are still not fully developed and the performances are not satisfactory. Recently,<br />
high performance n-type semiconductors have been obtained by modifying known p-type cores like<br />
acene and oligothiophene derivatives with strongly electron withdrawing fluoro/fluoroalkyl<br />
substituents. However, the influence of fluorinated substituents on the injected electrons is not fully<br />
understood, and has often been attributed to the reduction in LUMO energies.<br />
Polyperfluorophenylenephosphane derivatives (PPFPPs), [P(R)C6F4]n, are accessible by<br />
deprotonation of HP(R)C6F5, followed by oligomerization of the intermediary formed phosphanide<br />
ions, P(R)C6F5-, or by the complex reaction sequence of bromo(pentafluorophenyl)phosphane<br />
derivatives, Br-P(R)C6F5 with R = Ph, C6F5, and elemental magnesium.<br />
Orienting measurements of the obtained materials in “electron only devices” give evidence for<br />
PPFPPs being potential n-type semiconductors. Due to the inhomogenous composition of PPFPPs<br />
and the incommoding magnesium salts, molecular perfluorophenylenephosphanes with four<br />
phosphorus atoms such as P(C6F4PPh2)3 appear to be suitable to increase electron mobility and<br />
lifetime of the resulting electronic devices which were prepared by spin coating techniques.<br />
335
P-13<br />
SYNTHESIS AND CYTOTOXIC EVALUATION OF NOVEL NAPHTHOQUINONE<br />
FUSED PHOSPHORUS HETEROCYCLES<br />
Bin Wang, a Zhiwei Miao, a You Huang a , Ruyu Chen a , and Jie Wang, b<br />
aState Key Laboratory and Institute of Elemento-Organic Chemistry, Nankai University, Tianjin 300071, China<br />
bTianjin Institute of Medical and Pharmaceutical Sciences, Tianjin 300020, China.* Tel:+86 22 23508857; fax: +86 22<br />
23503627; E-mail: chenry@syn.nankai.edu.cn<br />
A series of novel naphthoquinone fused cyclic α-aminophosphonates, 2-alkoxy-3,4-dihydro-<br />
2H-naphtho[2,3-e][1,4,2]oxazaphosphinane-5,10-dione 2-oxide 3-44 have been synthesized for the<br />
first time. X-ray crystallography was performed on compound 14 in order to determine the exact<br />
stereoisomer. The new P-heterocyclic quinone compounds have been evaluated for antitumor<br />
activity on four human tumor cell lines, and five of them possessed significant cytotoxicity (IC50:<br />
0.019–7.64 μM) comparable to that of the reference drug doxorubicin. The molecule size of<br />
compound 3 indicated that these quinone-phosphorus heterocycles may be DNA-intercalators.<br />
©2000 Elsevier Science Ltd. All rights reserved.<br />
Acknowledgments:<br />
This work was supported by Nankai University (J02044 to Zhiwei Miao). We are grateful to Dr.<br />
Liangnian He for his encouragement throughout this work.<br />
Reference and Notes<br />
[1] Middleton, R. W.; Parrick J., In The Chemistry of the Quinonoid Compounds, By Patai, S., Rappoport, Z., Eds.;<br />
John Wiley & Sons: London, 1988; Vol. 2, pp 1019–1066.<br />
[2] Deny, W. A. Anti-Cancer Drug. Des. 1989, 4, 241.<br />
[3] Kohn, K. W. Cancer Res. 1996, 56, 5533.<br />
[4] Yoo, H. W.; Suh, M. E.; Park, S. W. J. Med. Chem. 1998, 41, 4716.<br />
[5] Park, H. J.; Kim, Y. S.; Kim, J. S.; Lee, E. J.; Yi, Y. J.; Hwang, H. J.; Suh, M. E.; Ryu, C. K.; Lee, S. K. Bioorg. Med.<br />
Chem. Lett. 2004, 14, 3385.<br />
[6] Bolognese, A.; Correale, G.; Manfra, M.; Lavecchia, A.; Mazzoni, O.; Novellino, E.; Colla, P. L.; Sanna, G.; Loddo,<br />
R. J. Med. Chem. 2004, 47, 849.<br />
[7] Ryu, C. K.; Han, J. Y.; Jung, O. J.; Lee, S. K.; Lee, J. Y.; Jeong, S. H. Bioorg. Med. Chem. Lett. 2005, 15, 679.<br />
[8] Gomez-Monterrey, I.; Santelli, G.; Campiglia, P.; Califano, D.; Falasconi, F.; Pisano, C.; Vesci, L.; Lama, T.; Grieco,<br />
P.; Novellino, E. J. Med. Chem. 2005, 48, 1152.<br />
[9] Garuti, L.; Roberti, M.; Pession, A.; Leoncini, E.; Hrelia, S. Bioorg. Med. Chem. Lett. 2001, 11, 3147.<br />
[10] Kafarski, P.; Lejczak, B. Curr. Med. Chem.-Anti-Cancer Agents. 2001, 1, 301.<br />
[11] Faulkner, D. J. Nat Prod. Rep. 2002, 19, 1.<br />
[12] Bittner, S.; Gorohovsky, S.; Paz-Tal, O.; Becker, J. Y. Amino Acids, 2002, 22, 71.<br />
[13] Kafarski, P.; Lejczak. B. In Aminophosphonic and Aminophosphinic Acids. Chemistry and Biological Activity,<br />
Kukhar V. P., Hudson H. R. Eds.; John Wiley & Sons: Chichester: 2000, pp 37-38.<br />
[14] Zhou, J.; Qiu, Y. G.; Feng, K. S.; Chen, R. Y. Synthesis 1999, 1, 40.<br />
[15] Wang, B.; Miao, Z. W.; Huang, Y.; Chen, R. Y. Heteroatom Chem. In press.<br />
[16]Wang, B.; Chen, R. Y.; Huang, Y.; Miao, Z. W. Chinese. J. Struct. Chem. 2006, 25, 523.<br />
[17] Podrebarac, E. G.; Cheng, C. C. J. Org. Chem. 1970, 35, 281.<br />
[18] Crystallographic data were deposited at Cambridge Crystallographic data Center, 12 Union Road, Cambridge CB2<br />
1EZ, UK and are available free from there under the deposition number CCDC 294861 for cis-14 and 609760 for 3.<br />
336
[19] Maury, C.; Gharbaoui, T.; Royer, J.; Husson, H. P. J. Org. Chem. 1996, 61, 3687.<br />
[20] Dimukhametov, M. N.; Bayandina, E. V.; Davydova, E. Y.; Zyablikova, T. A.; Dobrynin, A. B.; Litvinov, I. A.;<br />
Alfonson, V. A. Russ. Chem. Bull. Int. Ed. 2001, 50, 2468.<br />
[21] Skehan, P.; Storeng, R.; Scudiero, D.; Monko, A.; McMahon, J.; Vistica, D.; Warren, J. T.; Bokesch, H.; Kenney, S.;<br />
Boyd, M. R. J. Natl. Cancer. Inst. 1990, 82, 1107.<br />
[22] Gewirtz, D. A. Biochem. Pharmacol. 1999, 57, 727.<br />
[23] Moore, M. H.; Hunter, W. H.; Kennard, O. J. J. Mol. Biol. 1987, 206, 693.<br />
[24] Pindur, U.; Haber, M.; Sattler, K. J. Chem. Educ. 1993, 70, 263.<br />
[25] Martin, D. R.; Pizzolato, P. J. J. Am. Chem. Soc. 1950, 72, 4584.<br />
337
P-16<br />
1,3,4-OXAZODIZAOLE CONTAINING CYCLO- AND POLYPHOSPHAZENE<br />
Chen Zhao, Rui Bao, Jin-jun Qiu, Cheng-mei Liu*<br />
Department of chemistry,Huazhong University of Science and Technology, Wuhan, 430074, P. R. China<br />
Polyphosphazenes possess an inorganic P, N backbone with two organic groups connected to<br />
each phosphorus atom. The properties of polyphosphazenes are largely controlled by the choice of<br />
side groups. Polyphosphazenes that are hydrophobic, hydrophilic, ionic conductive, electro-<br />
luminescent can be synthesized by careful choice of the side groups[1-5].<br />
The electron–withdrawing character of the 1,3,4-oxadiazole ring in derivatives facilitates electron<br />
injecting and transport. Polymers containing oxadiazole moieties in either the main chain or a side<br />
group have been synthesized and their electron transportation properties have also been studied<br />
[6-10]. The cyclotriphosphazene and polyphosphazene with oxadiazole group were synthesized in<br />
this paper. The chemical structures are as follow:<br />
O<br />
N<br />
N<br />
N<br />
N<br />
O<br />
O O<br />
P<br />
N N<br />
O O<br />
P P<br />
N<br />
O O<br />
O N<br />
N<br />
CP<br />
N N<br />
O<br />
O<br />
N N<br />
O<br />
N<br />
N<br />
338<br />
( N P ) ( N P )<br />
a<br />
b n<br />
O O<br />
N C<br />
O<br />
N<br />
C<br />
The chemical structures of CP and PP containing 1,3,4-oxadiazole ring were characterized by<br />
FT-IR and 1H-NMR. The optical properties of CP and PP were characterized by UV-Vis and<br />
fluorescent spectrum. The thermal properties were analyzed by DSC and TGA. The results<br />
indicated that the UV-Vis absorption peak of CP was at 286nm(CHCl3 as solvent). When excited at<br />
286nm, the emission peak was at 356nm. Weight loss of CP was only 1.02% on heating to 350 ℃<br />
under nitrogen atmosphere.<br />
The number average molecular weight of polymer was 1.03×104, the polydispersity index was<br />
1.30 and Tg is 85 ℃ . The UV-Vis<br />
absorption peak of PP was at 284nm(CHCl3 as solvent). When<br />
excited at 283nm, the emission peak was at 360nm. Weight loss was 6.69% on heating to 350 ℃<br />
under nitrogen atmosphere. The CP and PP containing 1,3,4-oxadiazole ring are potential<br />
electroluminescence materials.<br />
PP<br />
OCH 3<br />
References<br />
[1] Allcock, H. R., Krause, W.E.. Macromol., 1997, 30, 5683-5687.<br />
[2] Allcock, H. R., Rutt, J. S., Fitzpatrick, R. J. Chem.Mater..1991, 3, 442-449.<br />
[3] Allcock, H. R., Fitzpatrick, R. J., Visscher, K. B.. Chem.Mater..1992, 4, 775-780<br />
[4] Allcock, H. R., Visscher, K. B.. Chem. Mater..1992, 4, 1182-1187<br />
[5] Louis M. Leung, C. M. Liu, C. K. Wong, et al. Polymer., 2002, 43, 233-237.<br />
[6] Tzanetos, N. P., Kallitsis, J. K. Chem. Mater..2004, 16, 2648-2655.<br />
[7] Jin, S.-H., Kim, M.-Y., Kim, J. Y., Lee, K.. J.Am.Chem.Soc..2004, 126, 2474-2480.<br />
[8] Shu, C.-F., Dodda, R., Wu, F.-I. Macro-molecules.2003, 36, 6698-6703.<br />
[9] Wu, F.-I., Shih, P.-I., Shu, C.-F., Tung, Y. Macromolecules.2005, 38, 9028-9036.<br />
[10] Thomas, K. R. J., Lin, J. T., Tao, Y.-T.. Chem.Mater..2002, 14, 3852-3859.
P-19<br />
STEREOSELECTIVE SYNTHESIS AND BIOLOGICAL ACTIVITIES OF<br />
O-(E)-1-{1-[(6-CHLOROPYRIDIN-3-YL)METHYL]-5-METHYL-1H-1, 2,<br />
3-TRIAZOL-4-YL}ETHYLENEAMINO O-ETHYL O-ARYL PHOSPHOROTHIOATES<br />
De-qing Shi<br />
Key Laboratory of Pesticide and Chemical Biology of Ministry of Education, Central China Normal University, Wuhan<br />
430079, Hubei, P. R. China<br />
Email: chshidq@yahoo.com.cn<br />
Neonicotinoid insecticides,as nicotinic acetylcholine receptor inhibitors have attracted increasing<br />
attention because of their safety, low toxicity and high activities [1, 2]. 1,2,3-triazole,<br />
thiophosphorate oxime ethers and their derivatives have been used as insecticides, nematocides,<br />
acaricides and plant growth regulators [3]. As a continuation of our research work in an attempt to<br />
find high activity and low toxicity pesticidal lead compounds [4], we designed and synthesized a<br />
type of novel phosphorothioates containing pyridine and triazole rings (See Fig. 1). Structures of the<br />
products were characterized by IR, 1H NMR, 31P NMR, MS and elemental analyses, one of their<br />
strucyures were determined by single crystal X-ray diffraction. Results of the preliminary bioassay<br />
indicate that the title compounds possess potential insecticidal activities to some extent.<br />
Cl<br />
N<br />
CH3 N<br />
N<br />
N<br />
CH3 N<br />
O<br />
EtO P S<br />
OAr<br />
Ar=2,4-Cl 2C 6H 3 (a), 4-ClC 6H 4 (b), C 6H 5 (c),<br />
2-CH 3C 6H 4 (d), 3-CF 3C 6H 4 (e), 3-CH 3C 6H 4 (f),<br />
2-Cl,4-FC 6H 3 (g), 2-CH 3OC 6H 4 (h), 2,3-Me 2C 6H 3 (i)<br />
Fig. 1<br />
References<br />
[1] (a) Shiokawa, K.; Tsubo, S.; Kagabu, S.; Moriya, K. EP Patent,192060 (1986); (b) Rudolf, E.; Ludwig, P. DE Patent,<br />
2918775 (1980).<br />
[2] Yamamoto, I.; Yabita, G.; Tomizawa, M. & Hissasomi, A. J. Pesti. Sci. 1994, 19, 335-339.<br />
[3] Krivopalov, V . P.; Shkurko, O. P. Russian Chemical Reviews, 2005, 74 (4), 339-379.<br />
[4] Luo, Z.-G.; Shi, D.-Q. J Heterocycl Chem 2006, 43, 1021-1026.<br />
339
P-27<br />
THE INFLUENTIAL FACTOR OF TEMPERATURE ON SYNTHESIS OF L-ARGININE<br />
OLIGO-PEPTIDES MEDIATED BY PHOSPHORUS OXYCHLORIDE<br />
Haiping Ren , Li Ma , Kui Lu*<br />
School of Chemistry and Chemical Engineering, Henan University of Technology, Zhengzhou 450052 , China<br />
The self-assembling into peptides for amino acids mediated by inorganic phosphorus has<br />
become a focus of science research [1] , whose courses are investigated by using electrosprary<br />
ionization mass spectrometry [2] .<br />
In this paper, it was investigated that the reaction of influential factor of temperature on<br />
synthesis of L-arginine oligo-peptides mediated by phosphorus oxychloride, quenching with water,<br />
the reaction mixtures yielded the corresponding peptides. The ESI-MS showed that at 30 ℃ the<br />
relative intensity of dipeptide(m/z=331)equal to the 35% of amino acid .When the temperature<br />
improved to 40℃, in the same reaction time, the relative intensity of oligo-peptides mixtures could<br />
not get more velocity as well as at 50 ℃ and even higher temperature. So improved the temperature<br />
had a little effect on this reaction .<br />
Figure The influential factor of temperature on synthesis of L-arginine Oligo-peptides ESI-MS<br />
Acknowledgements: The authors would like to thank the financial supports from the Chinese<br />
National Science Foundation (No.20272055, 20572016), Henan Province Science Foundation for<br />
Prominent Youth (No.0312000900) and Office of Education of Henan Province (No.<br />
2006KYCX017).<br />
References:<br />
[1] Lu, K.; Liu, Y.; Zhou, N.; Chen, Y.; Feng, Y.-P. ; Guo, X.-F.; Chen, W.; Qu, L.-B.; Zhao, Y.-F. Acta Chim. Sinica<br />
2002, 60, 372 (in Chinese).<br />
[2] Ba,J-F; Lu Z-Q; Liu N; Liu S-Y; Ji Z-J; Shen S-L. The ESI-MS investigation on synthesis of<br />
poly-peptides.Analytical Chemistry,2005,33(5),661~664. (in Chinese)<br />
340
P-28<br />
DISTRIBUTION AND CONCENTRATION OF TOTAL NITROGEN, TOTAL<br />
PHOSPHOROUS AND TOTAL ORGANIC CARBON IN SOUTH SEA, CHINA<br />
Haiyan Wang 1 , Daxiong Han 2 ,Jianyun Lin 1 .<br />
1 2<br />
Third Institute of Oceanography, State oceanic Administration, Xiamen, 361005, China; Department of Pharmacy,<br />
Medical College of Xiamen University, Xiamen 361005, China<br />
Background: The marine biogeochemistries of carbon, nitrogen and phosphorous have come<br />
under increased scrutiny because of their close involvement in climate change and coastal<br />
eutrophication. However, to our knowledge, few data are available for total nitrogen (TN), total<br />
phosphorous (TP) and total organic carbon (TOC) in South Sea, China.<br />
Objectives: The present study aims to contribute to the knowledge of their status through<br />
investigating the level and distribution of TN ,TP and TOC in South Sea, China.<br />
Methods: A total of 108 seawater samples of 11 sites in south sea, china were collected during<br />
August 29- September4. An automated and simultaneous method for determination of TN and TOC<br />
was applied to all seawater samples. The combined system allowed simultaneous determination for<br />
TOC and TN in the same sample using a single injection and provided low detection limits and<br />
excellent linear ranges for both TOC and TN. The risk of contamination has been remarkably<br />
reduced due to the minimal sample manipulation and automated analyses. And quantitative analyses<br />
of TP in seawater were accomplished by a typical chemical method.<br />
Results: Concentration ranges of TN and TP were 0.06-0.67, and 0.003-0.071 mg/L, respectively,<br />
as well as that of TOC were 0.23-2.51mg/L. The values of TN and TP showed that the status of<br />
nutrition is relatively better in south sea than other marine areas. Moreover, the upright change trend<br />
of TN concentration level as well as TP and TOC according to the experimental results at the total<br />
11 sites is shown in figure 1. The concentration of TN initial increases with the increasing of the<br />
depth, later the value becomes almost constant.<br />
In contrast, the concentration of TOC reduces with the increasing of the depth, later the value<br />
becomes almost unchangeable. Compared with the trend of TN and TOC, that of TP appears<br />
relatively stable. Thus, TP could be regarded as the key factor about eutrophication. This work<br />
should provide some useful information to better understand the environmental status of south sea<br />
in china.<br />
mg /L<br />
2<br />
0<br />
D-06<br />
0 200 400 600 800 1000 1200 1400 1600<br />
341<br />
TOC<br />
TN<br />
TP<br />
Figure 1 the uprigit change trend of TN, TP and TOC in south sea, china,<br />
take site D-06 as an example<br />
m
P-29<br />
MOLECULAR DOCKING OF SUBSTITUTED ALKYLPHOSPHONATES TO<br />
PYRUVATE DEHYDROGENASE<br />
Hao Peng, Hong-Wu He*<br />
Key Laboratory of Pesticide and Chemical Biology, Ministry of Education; and College of Chemistry, Central China<br />
Normal University, Wuhan 430079, China. *E-mail: he1208@mail.ccnu.edu.cn<br />
Pyruvate dehydrogenases, which is known as a target of pesticides, catalyzes the first step of the<br />
multistep process, using ThDP and Mg 2+ as cofactors. A series of acetylphosphinates or<br />
phosphonates have been designed and synthesized as potent inhibitors of PDHc, but none of them<br />
were active enough to be commercialized. 1 We began a systematic, long-term study aiming to<br />
design new inhibitors of PDHc with phosphonate moiety as potential agrochemicals. A series of<br />
1-(substituted phenoxyacetoxy)alkylphosphonate derivatives (Scheme 1) were synthesized and<br />
showed notable herbicidal activities, and some of them have been demonstrated as inhibitors of<br />
PDHc. 2-3<br />
Fortunately, the X-ray structure of PDHc E1-ThDP-Mg 2+ has recently been determined, which<br />
provided not only insights into the probable interaction mechanism of the PDHc E1 with the<br />
inhibitors, but also valuable clues for the prediction of active sites. 4 To explore the inhibitory<br />
mechanism, molecular docking studies on these analogues were performed. The Lamarckian<br />
Genetic Algorithm (LGA) was applied to locate the binding orientations and conformations of the<br />
1-(substituted phenoxyacetoxy)alkylphosphonate derivatives with the PDHc E1. A good correlation<br />
between the calculated binding free energies and the experimental inhibitory activities suggests that<br />
the identified binding conformations of these potential inhibitors are reliable. Therefore, the binding<br />
model and the information of the inhibitor-enzyme interaction would be useful in developing new<br />
agrochemical leads against the PDHc E1. Actually, Virtual screen was performed by using this<br />
reliable model, and several new compounds with comparable activities were designed and<br />
synthesized.<br />
R<br />
P<br />
1O O<br />
R2O O O<br />
R 3<br />
O<br />
SCHEME 1<br />
Acknowledgments<br />
Financial support by National Basic Research Program of China (2003CB114400) and NNSFof<br />
China ( 20372023)<br />
References<br />
[1] Baillie, A. C.; Wright, K.; Wright, B. J.; Earnshaw, C. G. Pestic. Biochem. Physiol., 30, 103 (1988).<br />
[2] He, H. W.; Wang, T.; Yuan J. L. J. Organomet. Chem., 690, 2608 (2005).<br />
[3] Tan, H. L.; Yuan, J. L.; He, H. W. Wang T. Chin. J. Chem. Engi., 6, 4 (2005).<br />
[4] Arjunan, P.; Nemeria, N.; Brunskill, A.; Chandrasekhar, K.; Sax, M.; Yan, Y.; Jordan, F.; Guest, J. R.; Furey, W.<br />
Biochemistry, 41, 5213 (2002).<br />
342<br />
X<br />
Y
P-32<br />
A PRACTICAL ROUTE TO SYNTHESIS SOME PHOSPHORYLATED PRODRUG<br />
Hong-bo Zhang a , Ren-Zhong Qiao a,b *, Yufen Zhao b *<br />
a Department of Pharmaceutical Engineering, Beijing University of Chemical Technology, Beijing 100029, China.;<br />
b The Key Laboratory of Bio-organic Phosphorus Chemistry and Chemical Biology, Ministry of Education.<br />
Nucleoside analogs have drawn a considerable attention as anti-HIV reagents. However, it is<br />
found that d4T, AZT and other nucleoside analogs do not exert antiviral activity directly after<br />
penetrating cells through a passive process, but can be phosphorylated to the corresponding mono-,<br />
di- and triphosphates by cellular kinases to terminate the viral DNA elongation through strong<br />
inhibition of HIV-RT elongation resulting in strong inhibition of HIV-RT. Thus, great efforts have<br />
been continuously made to develop analogs of d4T and AZT. [1]<br />
Here we introduce a route to establish a universal route to modify the structures of nucleoside<br />
analogs by introducing a certain group with anti-HIV or anti-tumors activities. [2] In this route,<br />
phosphorus trichloride is used as the phosphorylation agent, an asymmetric compounds were<br />
synthesized by adding corresponding alcohols. A cold atmosphere is required to make sure the<br />
reaction successfully.<br />
Take d4T as an example, compound 1 is phosphorylated to give an asymmetry H-phosphonate<br />
compound (Fig.1). Choline chloride and some kinds of steroids are phosphorylated with<br />
considerable yields followed the route described above. [3]<br />
HO<br />
O<br />
1<br />
O<br />
N<br />
NH<br />
O<br />
i,ii<br />
i. PCl3, CH2Cl2;<br />
ii. iso-propyl alcohol, TEA.<br />
Project supported by the National Natural Science Foundation of China (No. 20572008).<br />
References<br />
[1] Xu Tang, Cheng Huang, Hua Fu and Yu-fen Zhao, Synlett 2005, 12, 1930-1932.<br />
[2] Xiao-Bin Sun, Jian-Xun Kang and Yu-Fen Zhao, Chem. Commun., 2002, 2414-2415.<br />
[3] Rong Zeng, Hua Fu, Yu-fen Zhao, Macromolecular Rapid Communications, 2006, 27, 548–552.<br />
343<br />
O<br />
O<br />
P<br />
H<br />
2<br />
O<br />
O<br />
NH<br />
N<br />
O<br />
O
P-53<br />
ULTRASONIC PHOTOCATALYTIC DEGRADATION OF THE PESTICIDE<br />
“METHYL PARATHION”<br />
LI He-ping*<br />
Department of Chemistry and Environmental Engineering, Changsha University of Science and Technology, Changsha<br />
410076, PR China Tel.: +86 731 2618234; Fax: +86 731 2618234; E-mail: lihepinghn@163.com<br />
Different affecting factors on ultrasonic photocatalytic degradation of methyl parathion pesticide,<br />
a kind of typical organophosphate insecticides, by adopting nano Fe3O4 doping anatase TiO2<br />
catalyst after treatment of high-temperature activation was investigated. Experimental results<br />
indicated that Fe3O4 doping TiO2 catalyst greatly enhanced the ultrasonic degradation, and<br />
confirmes that methyl parathion is slowly degraded by direct ultrasonic photolysis in the presence<br />
of dissolve oxygen. Addition of nano Fe3O4 doping anatase TiO2 to the reaction system substantially<br />
increases the initial rate of reaction and the overall conversion of methyl parathion, the ultrasonic<br />
degradation kinetics of methyl parathion pesticide in the presence of nano anatase TiO2 catalyst<br />
followed the first order reaction. The degradation ratio is 96.5% for methyl parathion pesticide,<br />
99.0% removal for COD with in 60 min under the experimental conditions such as 40 K Hz<br />
ultrasonic frequency, 5.0 W/cm2 output power, 500 mg/ L amount of TiO2 catalyst (1.5% doping),<br />
pH 6.00, and temperature 25℃, when the initial methyl parathion pesticide concentration is 40<br />
mg/L. Completely photocatalytic degradation of methyl parathion at pH = 6.00 was found to occur<br />
in less than 90 minutes after reaction began.<br />
344
P-56<br />
APPLICATION OF TETRAKIS HYDROXYMETHYL PHOSPHONIUM<br />
IN LEATHER PRODUCTION<br />
Li Ya, Shao Shuangxi*, Jiang Lan, Han Ying, Shi Kaiqi<br />
Institute of Applied Chemistry, Ningbo University of Technology, Ningbo 315016,Zhejiang, China. Tel: +86 574<br />
87080148;Fax: +86 574 87081217; Email: nbssx@126.com<br />
Tetrakis hydroxymethyl phosphonium salts hereafter are abbreviated as THP salts have been<br />
widely used as textile retardants, oil-field waste water treatment agents and biocide in other fields.<br />
In 1956, THP salts was firstly used in leather production. The use of THP salts in chrome free<br />
tanning was studied in the following years and it was found that the copolymers of THP<br />
chloride(THPC) and phenol can be used as pretannages to produce leathers having excellent<br />
physical properties. The best tannages are obtained with a concentration of more than 3% THPC<br />
and about 2% of phenol. THP salts can also be used as cross linkers in melamine formaldehyde or<br />
urea formaldehyde solutions to form a copolymeric tanning agent in situ and the shrinking<br />
temperature of the tanned leather is above 100 . The obtained leathers have ideal mechanical<br />
℃<br />
properties with the combination tanning of 8% THP salts and 8% dicyandiamine at pH 6.0. The<br />
combination tanning of THP sulfate (THPS)-Fe, THPS-Al, THPS-silica, and THPS-silica-Al can<br />
generate ideal leather with good organoleptic properties. The leather tanned by 2.5% Fe and 1.5%<br />
THPS are light in colour and with the shrinkage temperature of about 95 and that of the leather<br />
℃<br />
tanned by THPS-silica-Al in combination is 86 . Furthermore, THP salts can be used in acid<br />
℃<br />
degreasing prior to tanning and as cross linker for casein finishes after tanning. But the mechanism<br />
of THP salts tanning was poorly understood. The study indicates that THP salts mainly link with the<br />
amino groups of hide collagen at a mole ratio of n(P):n(N)=1:2.2. The release of formaldehyde in<br />
the process of THP salts tanning is one of the deterring factors for their widespread application in<br />
leather tanneries.<br />
345
P-58<br />
THE SYNTHESIS OF<br />
N-HYDROXYMETHYL-3-(DIALKYLPHOSPHONO) PROPIONAMIDE<br />
Xiao-lian Hu 1 , Ru-yi Zou 1 , Shang-bin Zhong 1 , Jun-liang Yang 1 , Zhi-yu Ju 1 , Yong Ye* 1 , Xin-cheng Liao 1 , Yu-fen<br />
Zhao* 1,2<br />
1. Department of Chemistry, Key Laboratory of Chemical Biology and Organic Chemistry, Zhengzhou University,<br />
Zhengzhou, 450052, China; 2. The Key laboratory for Bioorganic Phosphorus Chemistry and Chemical Biology<br />
(Ministry of Education), Department of Chemistry, Tsinghua University, Beijing 100084,China. E-mail:<br />
yeyong03@tsinghua.org.cn; yfzhao@mail.tsinghua.edu.cn.<br />
It has been known for over 30 years that phosphorus compounds can retard flame in cellulosic<br />
textiles. Despite being frequently implicated in fires causing injuries and fatalities, cotton fabrics<br />
have a major share of the world’s textile market. Cotton is essentially cellulose and most durable<br />
fire-retardancy finishing has been done by the application of organo phosphorus compounds. Being<br />
rich in phosphorus and nitrogen, phosphonopropionamide (pyrovatex CP) has been successfully<br />
used as a flame-retardant agent for cotton. In order to investigate effect of the N/P ratio, we<br />
prepared some pyrovatex CP. Synthetic route is shown at follow:<br />
Freshly-prepared sodiun alkyloxide solution was added slowly to a solution of acrylamide and<br />
dialkyl phosphite. The reaction was monitored by ESI-MS. The propionamide was isolated by<br />
seeding the cooled solution and filtering off the precipitated crystals. These were washed with<br />
organic solvent and dried. The propionamide was then added gradually to formalin, the pH of the<br />
mixture being maintained at 8.0 by adding approximately caustic soda solution. After the reaction<br />
completed (detected by ESI-MS), it was allowed to cool to room temperature and filtered. A<br />
solution of N-hydroxymethyl-3-(dialkylphosphono) propionamide was obtained. Its fire-retardancy<br />
effect research is being continued.<br />
Acknowledgments: the authors would like to thank the financial supports from NNSFC<br />
(No.20602032 and 20572061<br />
Reference<br />
[1] R. B. Le Blanc , Text Ind. 1974, 138, 115<br />
[2] R. Bruce, R. L. b. Le Blanc, Text Chem. Colorist, 1997, 29,2<br />
[3] F .F. Flynn, W. A. Reeves, J. D. Futhrie, et al., US 2,743,299<br />
[4] H. N. Dornach, H. H. Basel, J. Kern, et al., US 3,754,981<br />
346
P-60<br />
ELECTROSPRAY IONIZATION TANDEM MASS SPECTROMETRY OF<br />
N-PHOSPHORYL-α-, β- AND γ- AMINO ACIDS<br />
Liming Qiang a , Shuxia Cao a , Jianchen Zhang a , Xincheng Liao a , Yufen Zhao a,b *<br />
a The Key Laboratory of Chemical Biology and Organic Chemistry, Department of Chemistry, Zhengzhou University,<br />
Zhengzhou, 450052, P.R.China; b Key Laboratory for Bioorganic Phosphorus Chemistry of Ministry of Education,<br />
Department of Chemistry School of Life Sciences and Engineering, Tsinghua University, Beijing 100084, P.R.China<br />
Phosphoryl amino acids are the smallest units of phosphoproteins and have many interesting<br />
biomimic reactivities1. It is significant to study them by electrospray ionization mass spectrometry<br />
(ESI-MSn) for further understanding their unique structure.<br />
In this letter, different kinds of N-phosphoryl amino acids, such as N-(O,O′-diisopropyl)<br />
phospho-L-α-alanine (DIPP-L-α-Ala), N-(O,O′-diisopropyl) phospho-D-α-alanine (DIPP-D-α-Ala),<br />
N-(O,O′-diisopropyl) phospho-β-alanine (DIPP-β-Ala) and N-(O,O′-diisopropyl) phospho-γ-amino<br />
butyric acid (DIPP-γ-Aba) were investigated by positive and negative electrospray ionization ion<br />
trap mass spectrometry (ESI-MS/MS). Their fragmentation pathways were investigated. The<br />
stepwise fragmentation of [M+ Na]+ ions and [M- H]- ions of them all underwent a five-membered<br />
(for DIPP-L-α-Ala and DIPP-D-α-Ala)2, six-membered (for DIPP-β-Ala) and even<br />
seven-membered (for DIPP-γ-Aba) ring transition state formed by the nucleophilic attack of the<br />
C-terminal carboxyl oxygen on the phosphorus (Figure 1), leading to a P–N to P–O bond migration.<br />
The phenomenon could be as a result of the strong affinity of the phosphoryl group for the hydroxyl<br />
group.<br />
a b<br />
(H 3C) 2HCO<br />
HO<br />
ONa<br />
P<br />
HO<br />
H<br />
N<br />
O<br />
(CH 2 )n<br />
347<br />
O<br />
HO<br />
P<br />
N<br />
O<br />
(CH 2)n<br />
[M+Na-C 3H 6] + [M-H-(CH 3) 2CHOH-C 3H 6] -<br />
n=2: M=253 for DIPP-β-Ala; n=3: M=267 for DIPP-γ-Aba<br />
FIGURE 1 Six-membered ring or seven-membered ring transition state for DIPP-β-Ala and<br />
DIPP-γ-Aba: a. sodium adducts; b. negative ions<br />
References<br />
[1]. Cheng CM, Liu XH, Li YM, et al. Origins of Life and Evolution of the Biosphere. 2004, 34: 455.<br />
[2]. Cao SX, Zhang JC, Xu J, Liao XC, Zhao YF. Rapid Commun. Mass Spectrom. 2003, 17: 2237.<br />
O
P-63<br />
SEDIMENT PHOSPHORUS BUFFERING CAPACITY IN DRAINAGE DITCH IN HILLY<br />
AREA OF PURPLE SOIL, CHINA<br />
Luo Zhuan-xi 1,2 ,Zhu Bo 1 ,Wang Tao 1,2<br />
1, Institute of Mountain Hazards and Environment ,the Chinese Academy of Sciences , Chengdu 610041, China;<br />
2, Graduate School of the CAS ,Beijing 100039, China<br />
Phosphorus (P) losses from residence/agriculture lands degrade surface waters due to<br />
anthropogenic eutrophication. A large portion (great than three-fourth) of the eroded sediment is<br />
deposited in their delivering ways, such as stream and drainage ditch network. Stream and ditch<br />
sediments interact with P in the water column and as such play a pivotal ecological role in buffering<br />
in water column P concentration. Previous studies focused on plot-to-field scale P losses, ponds and<br />
lakes sediment from sites interacting with soluble P and its risk evaluation. Little information<br />
among different ditch types has been gathered on risk evaluations of sediment interacting with<br />
water column P. This study was conducted to examine the phosphorus equilibrium between the<br />
sediments and water column, sediment acting as whether or not potential impact on the<br />
eutrophication of downstream in four different ditch types. Surface water and sediment samples<br />
were collected and analyzed for organic matter (OM), pH, Conductivity, oxalate-extractable P,<br />
oxalate-extractable Al and Fe content from sites along four ditches, i.e. Residence drainage ditch<br />
(Rdd), Agriculture drainage ditch (Add), Single complex ditch (Scd, only one Rdd and Add together,<br />
catchment area 32.4ha) and Multiple complex ditch (Mcd, many Rdd and Add together, catchment<br />
area 1230ha).<br />
Soluble P concentration was higher in source areas (Rdd (0.366mg P L-1), Add (0.143mg P L-1,<br />
respectively) and greater catchments (Mcd, 0.123mg P L-1). However, the P concentration was one<br />
time lower in smaller catchments than others (Scd, 0.067 mg PL-1). Most of Sediment from site in<br />
ditch acted as P sink except Scd, which Soluble P in drainage water were greater than EPC0<br />
concentrations. The phosphorus sorption maximum (Smax) ranged from 145.75 to 289.35 mg P<br />
kg-1 sediment, which Smax in Rdd was lowest, but Smax in Add was greatest, and Smax between<br />
Scd and Acd were not obviously different, i.e. 234.31, 210.32 mg P kg-1 sediment, respectively;<br />
equilibrium P concentrations (EPC0) ranged from 0.03 to 0.06 mg P L-1, which Rdd > Add> Scd ><br />
Mcd. Therefore, Add, Scd and Mcd had stronger p buffering capacity than Rdd, probably resulting<br />
from the drainage polluted water because of higher soluble P in water column.<br />
The degrees of phosphorus saturation (DPS) of ditch sediments were lower than critical value of<br />
DPS (25%), ranged from 4.01 to 8.96%, which had not a potential impact on eutrophication of<br />
receiving water. Smax was significantly correlated oxalate-extractable P (Pox, r2 =-0.997, p
P-83<br />
LIQUID CRYSTALLINE BEHAVIOR OF CYCLOTRIPHOSPHAZENE<br />
Rui Bao, Chen Zhao, Jin-jun Qiu, Cheng-mei Liu*<br />
Deparment of Chemistry, Huazhong University of Science and Technology, Wuhan, 430074, P. R.China<br />
A great deal of scientific and technological work has been devoted to supermolecular liquid<br />
crystals in recent years[1,2]. Cyclotriphosphazenes are very attractive inetermidie in this area.<br />
These compounds are highly versatile molecules with a multiarmed rigid ring that can be used as a<br />
core for the formation of one-dimensional columnar superstructures. Recently,<br />
cyclotriphosphazenes which exhibited columnar mesomorphism have been synthesized by Jimenez<br />
J. et al.[3,4].<br />
Cyclotriphosphazenes bearing stilbene derivatives as promesogenic units linked to phosphorus<br />
atoms were synthesized in our group. The method was based on the direct reaction of<br />
hexa(4-formylphenoxy)cyclotriphosphazene[N3P3(OC6H4-p-CHO)6] with six equivalents of<br />
(4-alkoxyphenyl)acetonitrile[ROC6H4CH2CN](R=C2H5, C6H13, C12H25, C18H37).<br />
OHC<br />
OHC<br />
OHC<br />
O O<br />
P<br />
N N<br />
O<br />
P P<br />
O<br />
N<br />
O<br />
O<br />
CHO<br />
CHO<br />
R=C2H5, C6H13, C12H25, C18H37<br />
CHO<br />
+<br />
NC<br />
OR<br />
RO<br />
349<br />
O<br />
O<br />
P<br />
N N<br />
O<br />
P P<br />
O<br />
N<br />
O<br />
O<br />
The structures of the products were characterized by 1H-NMR, 31P-NMR, UV-Vis and IR<br />
spectra. The liquid crystalline behaviors of organocyclotriphosphzenes which have different<br />
terminal alkyl chain are investigated by differential scanning calorimetry(DSC), polarized optical<br />
microscopy(POM), and X-ray diffraction(XRD).<br />
Reference<br />
[1] Donnio B., Barbera J., Gimenez R., et al. Macromolecules, 2002, 35, 370-381.<br />
[2] Dimitrakopoulos C. D., Malenfant P. R. L. Adv. Mater. 2002, 14, 99.<br />
[3]Barbera J., Bardaji M., Jimenez J., et al. J. Am. Chem. Soc., 2005, 127(25), 8994-9002.<br />
[4] Barbera J., Jimenez J., Laguna A., et al. Chem. Mater., 2006, 18(23), 5437-5445.<br />
RO<br />
OR<br />
CN<br />
NC<br />
CN<br />
NC<br />
CN<br />
OR<br />
NC<br />
OR<br />
OR
P-84<br />
MONITORING INFLUENCE OF REACTION CONDITIONS ON SELF-ASSEMBLY INTO<br />
OLIGO-PEPTIDES FOR THREE SULF-AMINO ACIDS BY USING ESI-MS<br />
Kui Lu,Rui Li,Li Ma<br />
School of Chemistry and Chemical Engineering, Henan University of Technology, Zhengzhou 450052, China<br />
The amino acids and phosphorus play vital roles in life science. Even though there are lots of<br />
papers about peptide synthesis related to the chemical evolution of life, there is litter investigation<br />
on the intrinsic relationship between the phosphorus and amino acids [1] .<br />
In our previous work, we found that with the assistance of inorganic phosphorus amino acids<br />
could be assembled into oligo-peptides [2] . In this paper, the phosphorylation of three sulf-amino<br />
acids and the self-assembly into oligo-peptides mediated by phosphorus oxychloride were studied<br />
by using electrospray ionization mass spectrometry (ESI-MS). On quenching with water, the<br />
reaction mixtures, which were produced under different reaction conditions, yielded the<br />
corresponding peptides. Influence of the reaction conditions such as reaction time, solvent and<br />
temperature on self-assembly into olig-peptides for three sulf-amino acids were monitored. Also,<br />
the assembled into oligo-peptides activity of three sulf-amino acids were discussed. The reactions<br />
are shown in scheme 1.<br />
O<br />
H 2N CH C<br />
R<br />
OH<br />
POCl 3<br />
R = H2C S S CH2 CH COOH<br />
R = H2C CH2 S CH3 R =<br />
H 2C SH<br />
H 2O or ROH<br />
NH 2<br />
350<br />
H<br />
O<br />
HN CH C OH<br />
n<br />
R<br />
n = 2~4<br />
n = 2~11<br />
n = 2~9<br />
Scheme 1 Self-assembly of three amino acids into oligo-peptides mediated by phosphorus<br />
oxychloride<br />
In conclusion, a simple and efficient method for the synthesis of oligopeptides have been found.<br />
The presence of phosphorus could accelerate the interaction of amino acids. It might be useful in<br />
the study about the origin of protein and co-evolution of life.<br />
Acknowledgements: The authors would like to thank the financial supports from the Chinese<br />
National Science Foundation (No.20272055, 20572016), Henan Province Science Foundation for<br />
Prominent Youth (No.0312000900) and Office of Education of Henan Province (No.<br />
2006KYCX017).<br />
References:<br />
[1] N. Zhou, K. Lu, Y. Liu, et al, The abstracts of the 13 th international conference on the origin of life, 2002, P87<br />
[2] K. Lu, Y. Liu, N. Zhou, et al, Acta Chimica Sinica, 2002, 60(2): 372 (in Chinese)
P-90<br />
ISOLATION AND DETERMINATION OF DIASTEREOISOMERS OF AMINO ACID<br />
HYDRIDOPHORANE BY HPLC-ESI-MS<br />
Shuxia Cao 1 , Yali Xie 1 , Jinming Liu 1 , Yanchun Guo 1 , Xincheng Liao 1, Yufen Zhao 1,2*<br />
1 Key Laboratory of Chemical Biology and Organic Chemistry, Department of Chemistry, Zhengzhou University,<br />
Zhengzhou, 450052, P.R.China ; 2 Key Laboratory for Bioorganic Phosphorus Chemistry of Ministry of Education,<br />
Department of Chemistry School of Life Sciences and Engineering, Tsinghua University, Beijing 100084, P.R.China<br />
Pentacoordinated phosphorus derivatives have biochemical activities and are widely used in<br />
medicine, pesticide and ergonomics, etc. Hydridophorane is a kind of special pentacoordinated<br />
phosphorus derivatives, and has versatile specific properties which can be used to synthesize some<br />
important compounds.[1] The new literature reported that pentacoordinated bimolecular amino acid<br />
hydridophorane could be a new kind of potent and efficient inhibitors towards tyrosinase.[2] So we<br />
synthesized a series of pentacoordinated bimolecular amino acid hydridophorane and in the system,<br />
a pair of diastereomers of hydridophorane were observed. In this letter, HPLC-ESI-MS was used to<br />
isolate and determinate the diastereoisomers. L-valine was taken as an example. By the reaction of<br />
L-valine, triethylamine and phosphorus trichloride in THF at 70 ℃ for two hours, bimolecular<br />
L-valine hydridophosphorane were synthesized. The products were subjected to HPLC-ESI-MS. As<br />
shown in figure1, the diastereoisomers were isolated and determinated. As shown in figure2, the<br />
absolute configuration was determinated by the X-ray crystallographic study.[3] The peak1 in Fig1<br />
was corresponding to a configuration, and the peak2 in Fig1 was corresponding to b configuration.<br />
We have established an effective methodology for synthesizing and isolating hydridophorane, and<br />
through this method, the diastereoisomers of L-Trp, L-Phe, L-leu, L-Met hydridophorane were<br />
isolated and determinated. The results provide a better method for synthesizing and isolating a<br />
certain configuration pentacoordinated bimolecular amino acid hydridophorane .<br />
Fig. 1 HPLC chromatogram of the L-valine hydridophosphorane<br />
Fig.2 Diastereomers configurations of L-valine hydridophosphorane<br />
References<br />
[1] Liu Lun-zu, Liu Zhao-jie. An Introduction to Organophosphorus Chemistry [M]. Wuhan: Central China Normal<br />
University Press,1991, 182.<br />
[2] Yu L, Liu Z, et al. [J], Amino Acids, 2005, 28: 369-372.<br />
[3] Shu-Xia Cao,Jin-Ming Liu,et al. Acta Cryst, 2006, E62, 4642-4643.<br />
351
P-97<br />
SYNTHESIS OF LONG CHAIR ORGANOPHOSPHORUS COMPOUNDS ON THE BASIS<br />
OF INDUSTRIAL FRACTIONS OF HIGHER OLEFINS<br />
Il’yas S. Nizamov 1 , Yan Ye. Popovich 1 , Yevgeniy S. Ermolaev 1 , Il’nar D. Nizamov 1 , Gulnur G. Sergeenko 1 , Vladimir A.<br />
Alfonsov 1 ,Elvira S. Batyeva 1 , Magdeev I.M. 1 , Reznik V.S. 1 , Sinyashin O.G. 1 , Yarullin R.S. 2<br />
1 A.E. Arbuzov Institute of Organic and Physical Chemistry,Arbuzov Str., 8, Kazan, 420088, Russia, E-mail:<br />
nizamov@iopc.knc.ru ; 2 Join Stock Company “Tatneftekhiminvest-holding”, Yershov Str., 29, Kazan, 420045, Russia,<br />
Technological methods were developed for synthesis of higher phosphorus acids and thioacids,<br />
their esters and salts by the reactions of phosphorylation and thiophosphorylation of olefins of<br />
industrial fractions С16-С40 and propylene tetramer with phosphorylating agents. Thus, convenient<br />
method of synthesizing O,O-dialkyl esters of long chair alkylphosphonic acids was developed by<br />
the reactions of O,O-dialkyl phosphites with olefins of fractions С16-С18, С20-С26 и С28-С40 in<br />
1:1 molar ratio in the presence of catalytic amounts of benzoyl peroxide at 135-140 оС for 10-12 h.<br />
O,O-Dialkyl alkylphosphonates were isolated by vacuum distillation in 62-80 % yields.<br />
O,O-Dialkyl alkylphosphonates were used as intermediates for the synthesis of corresponding<br />
higher alkylphosphonic acids and their potassium salts.<br />
CH<br />
3<br />
-(CH<br />
2<br />
)<br />
n<br />
-C(R')=C(R")H + (RO)<br />
2<br />
PH<br />
R = Me, Pr-i; R' = H, Alk; R" = H, Alk; n = 13-37<br />
O<br />
352<br />
CH 3 (CH 2 ) n C(R')H-С (R")H-P(OR) 2<br />
Higher alkylphosphonous and dialkylphosphinic acids were obtained by the reactions of water<br />
solution of hypophosphorous acid with olefins of fractions С16-С18, С20-С26 and С28-С40 and<br />
propylene tetramer in 1:1 molar ratio in the presence of benzoyl peroxide (5 % mass.) and sulfuric<br />
acid under refluxing.<br />
O<br />
O<br />
H H<br />
CH<br />
3<br />
-(CH<br />
2<br />
)<br />
n<br />
-C(R")=C(R')H<br />
2<br />
POH<br />
CH<br />
3<br />
-(CH<br />
2<br />
)<br />
n<br />
-C(R")H-С(R')H-P<br />
OH<br />
O<br />
R'= H, Alk; R" = H, Alk; n = 13-32<br />
+ CH 3 (CH 2 ) n C(R")H-С(R')H-P-C(R')H-C(R")H-(CH 2 ) n CH 3<br />
Addition reactions of dithiophosphoric and bisdithiophosphonic acids with olefins of fractions<br />
С16-С18 and С20-С26 and propylene tetramer were performed at 80 о С for 1-2 h in 1:1 molar ratio<br />
in the presence of anhydrous of ZnCl2 in acetonitrile solution with the formation of products formed<br />
in accordance with Markovnikow’s rule.<br />
S<br />
S<br />
ZnCl<br />
2<br />
(RO)<br />
2<br />
PSH + CH<br />
3<br />
(CH<br />
2<br />
)<br />
n<br />
C(R')=C(R")H CH<br />
3<br />
(CH<br />
2<br />
)<br />
n<br />
C(R')-S-P(OR)<br />
MeCN<br />
2<br />
CH<br />
2<br />
(R")<br />
R = Et, i-Bu; R' = H, Alk; R" = H, Alk; n = 13, 15 и 17-23<br />
OH<br />
+<br />
O
P-107<br />
SYNTHESIS AND BIOLOGICAL ACTIVITIES OF O,O-DIALKYL<br />
1-((2-CHLOROTHIAZOL-5-YL OR 6-CHLOROPYRIDIN-3-YL) METHYL<br />
-4-METHYL-1H-1, 2, 3-TRIAZOL-4-YL-5-CARBONYLOXY SUBSTITUTED<br />
METHYL PHOSPHONATES<br />
Xiao-Bao Chen & De-Qing Shi<br />
Key Laboratory of Pesticide and Chemical Biology of Ministry of Education, Central China Normal University, Wuhan<br />
430079,Hubei,P.R.China,<br />
E-mail:chshidq@yahoo.com.cn<br />
Neonicotinoids, accounting for 10-15% sales in worldwide insecticides, are increasingly used for<br />
crop protection and animal health due to their high activities and safety, [1]. Because of their<br />
structures and action mechanism similarities to those of nicotine, the agrochemicals which contain a<br />
pyridine ring or a thiazole ring are called neonicotinoids. The 1,2,3-triazoles and<br />
1-hydroxyalkylphosphonates, which are used as insecticides, nematocides, acaricides and plant<br />
growth regulators, [2,3] play an important role in pesticide science. In an attempt to find high<br />
activity and low toxicity pesticidal lead compounds [4], we continually designed and synthesized a<br />
type of novel phosphonates 6. The synthetic routine is listed in Scheme 1.<br />
DMSO/K2CO3 CH3COCH2COOEt NaOH/H2O R R N3 R<br />
N<br />
N<br />
N<br />
CH3 COOEt<br />
N<br />
N<br />
N<br />
CH3 OH<br />
O<br />
1 2 3<br />
SOCl 2<br />
R N<br />
N N<br />
CH 3<br />
O<br />
Cl<br />
Et 3N/CHCl 3<br />
HOCHPO(OR 2) 2<br />
R 1<br />
353<br />
R N<br />
N N<br />
4 5a~i 6a~i<br />
a: R= Cl CH2 ; b: R=<br />
N<br />
CH3 O<br />
OR2<br />
O P<br />
OR2 O R1 Their structures were confirmed by IR, 1H NMR, 31P NMR, MS and elemental analyses, two of<br />
them were determined by single crystal X-ray diffraction. The insecticidal activities test of title<br />
compounds are on the way.<br />
References<br />
[1] Yamamoto, I., and Casida, J. E., Eds. Nicotinoid Insecticides and the Nicotinic Acetylcholine Receptor,<br />
Springer-Verlag,Tokyo,1999.<br />
[2] Ogura, T.; Numata, A.; Ueno, H.; Masuzawa, Y. WO PCT 039 106 (2000).<br />
[3] He,H.-W.;Wang.T.;et al. CN Patent 1685825 (2005).<br />
[4] Luo, Z.-G.; Shi, D.-Q. J Heterocycl Chem 2006, 43, 1021-1026.<br />
Cl<br />
N<br />
S<br />
CH 2
P-110<br />
DETERMINATION OF ORGRANOPHOSPHOROUS PESTICIDES USING<br />
PHOSPHOROUS IONIC LIQUID AS EXTRACTION AND LPME-HPLC<br />
Xie Hongxue 1 He Lijun* 1 Wang Meimei 1 Wu Xiuling 2 Wu NaNa 1<br />
1.Department of Chemistry and Chemical Engineering, Henan University of Technology, Zhengzhou, China, 450052;<br />
2.Faculty of Materials Science and Chemical Engineering, China University of Geosciences, Wuhan, China,430074<br />
A novel method for the determination of phorate, poxim, parathion and other<br />
orgranophosphorous pesticides(OPPs) in water samples has been developed using phosphorous<br />
ionic liquid-based liquid-phase microextraction(LPME) [1] coupled with high-performance liquid<br />
chromatography(HPLC). The resulting procedure was shown to be a good alternative methodology<br />
for the determination of selected orgranophosphorous pesticides(OPPs) in environmental samples.<br />
It is proved that the methods are simple, fast, reproducible, effective and environmentally friend.<br />
The procedure of liquid-phase Microextraction(LPME) is show in Fig.1. The optimized<br />
extraction conditions has been described in the literature. [2] The analytes include phorate, poxim,<br />
parathion, carbofuran, chlorpyrifos, omethoate, carbaryl. These analytes consist of<br />
orgranphosphorous pesticides (OPPs), Organochlorine pesticides (OCPs) and carbamate pesticides.<br />
We used ionic liquids and other organic solvent as extraction of liquid-phase Microextraction<br />
(LPME). The result suggests that the extraction efficiency of phosphorous ionic liquid<br />
(1-butyl-3-methylimidazolium hexafluorophosphate, [C4MIM]PF6) [3] is better than that of organic<br />
solvent. Moreover, the enrichment folds of orgran phosphorous pesticides(OPPs) by phosphorous<br />
ionic liquid([C4MIM]PF6) is especially high and steady. The phorate, poxim, parathion,<br />
chlorpyrifos, omethoate and other phosphorous pesticides are greatly enriched by phosphorous ionic<br />
liquid([C4MIM]PF6),and the enrichment factor of these are 665, 553, 630, 150 and 110,<br />
respectively. The R.S.D. values obtained were satisfactory and ranged between 2.1% and 12.0% for<br />
all analytes. The results show a interesting phenomena that the analytes and extraction solvent are<br />
all phosphorous, which accords the similar dissolve mutually theory.<br />
We synthesized phosphorous ionic liquids , including 1-butyl-3-methylimidazolium<br />
hexafluorophosphate, 1-ethyl-3-methylimiazolium hexafluorophosphate,1-acetyl-3-methylimidazolium<br />
hexafluorophosphate,1-butyl-3-methylimidazolium hexafluorophosphate, and so on. The<br />
result show that these phosphorous ionic liquids can extract phosphorous pesticides efficiently. By<br />
using this strategy, we synthesized especial ionic liquids, which may link with boracic, nickelic,<br />
chloric and nitric group to extract boric, nickelic, chloricand nitric compound.<br />
References<br />
[1] Jeannot M A, Cantwell F F. Anal. Chem.[J], 1996 , 68: 2236<br />
[2] Xie H X, He L J,Wu Y, Lu K,Si X Zh. China Anal. Chem[J],accept<br />
[3]He L J, Zhang W Z, Zhao L, Liu X, Jiang S X. J. Chromatog. A.[J], 2003, 1007: 39.<br />
354
Norm.<br />
500<br />
400<br />
300<br />
200<br />
100<br />
0<br />
Fig.1 Schematic illustration of LPME system<br />
1.Syringe 2. Aqueous sample<br />
3. Water bath 4. Stirring bar<br />
5. Magnetic stirrer 6. Syringe needle<br />
7. PTFE ring 8. Extraction solvent<br />
3.670<br />
0 2 4 6 8 10 12<br />
Fig.2 chromatogram of phorate in aqueous solution(a) and extracted by [C4MIM]PF6 (b)<br />
(1= [C4MIM]PF6 2=water 3=phorate)<br />
355<br />
10.070<br />
min
P-111<br />
SYNTHESIS AND THERMAL PROPERTY OF<br />
BIS(1-OXO-2,6,7-TRIOXO-1-PHOSPHABICYCLO[2,2,2]OCTANE-4-METHANOIC)-2,2-D<br />
IMETHYL-1,3-PROPANEDIESTER<br />
Xi-Jun Sheng, Zheng-Qiu Li, Hong-Wu He*<br />
Key Laboratory of Pesticide and Chemical Biology of Ministry of Education, College of Chemistry, Central China<br />
Normal University, Wuhan 430079, People's Republic of China.<br />
Organophosphorus-containing flame retardant is a predominant product. It can give a charring<br />
layer to coating the interface of the polymer during combustion. And this charring layer could serve<br />
as a diffusion barrier to slow down the gasification and vaporization of organic polymers. As an<br />
additive flame retardant, so many of them are liquid, and have a poor thermal property, evaporate<br />
easily and do some bad to material’s property, these defects restrict the rang of their applications.<br />
Compound PFR-8 which has a big molecular weight; good thermal stability and halogen free, was<br />
designed and synthesized.<br />
O<br />
P<br />
O<br />
O HOCH2C(CH3) 2CH2OH O<br />
O COCl<br />
P<br />
Et3N/CH3CN O<br />
O<br />
O<br />
O<br />
O<br />
O<br />
O O O P O<br />
CH3 O<br />
1 PFR-8<br />
Scheme 1<br />
Compound 1 was prepared from pentaerythitol (PE) and phosphorus oxychloride (POCl3)<br />
according to literature. Compound PFR-8 can be obtained by the reaction of compound 1 with<br />
neopentyl glycol (NPG) in the presence of triethylamine and acetonitrile, PFR-8 was obtained as<br />
white solid in yield 86%. Its structure was confirmed by 1 H NMR, 31 P NMR, IR and elemental<br />
analysis, and the thermal behaviors of PFR-8 was studied by TG and DSC respectively. The result<br />
indicated that PFR-8 have high glass transition temperature (Tg=275.7 ℃ ), decomposed remarkably<br />
between 322.4~330 ℃ , and weight lost rapidly in this temperature area. When it was heated to<br />
600 ℃ , the charring residue was 31.4%. PFR-8<br />
is expected to be a potential organophosphorus<br />
flame retardant.<br />
Acknowledgments<br />
Financial support by National Basic Research Program of China (2003CB114400) and NNSFof<br />
China ( 20372023)<br />
REFERENCES<br />
[1] Li Yu-Gui, Wang Jian-Ji, HAN Tao, Acta Chimica Sinica, 46,679-685, (1988).<br />
[2] David W. A., Edwyn C. A., Leslie E. S., Poly. Deg. Stab., 45,399-408, (1994).<br />
356<br />
CH 3
P-116<br />
THE IMPROVED METHOD FOR THE INDUSTRIAL SCALE PREPARATION OF<br />
ADENOSINE CYCLOPHOSPHATE (cAMP)<br />
Xiu Qiang Wang, Dong Chao Wang, Ran Xia, Zhi Guang Zhang, Hai Ming Guo, Gui Rong Qu*<br />
College of Chemistry and Environmental Science, Henan Normal University, Xinxiang, Henan 453007, P. R.<br />
China;Tuoxin Biochemical Technology & Science Co., Ltd. Xinxiang, Henan 453000, P. R. China, E-mail:<br />
quguir@sina.com<br />
cAMP (3) is a widely used drug to cure angina pectoris and myocardial infarct for its high<br />
affinity and less side effect. It can modulate the differentiation of the cells, canceration and<br />
reversion, as well as many other bio-physical processes. Thus, the demand for this compound has<br />
been growing dramatically in the international market. Herein, we presented the improved method<br />
for the industrial scale preparation for cAMP.<br />
Treatment of adenosine (1) with phosphoryl trichloride (POCl3) in fresh distilled triethyl<br />
phosphate at -5 o C for 2 hours afforded the key intermediate adenosine 5´-dichlorophosphate (2).<br />
After adding ethyl acetate to the reaction mixture under stirring, we found that 2 precipitated from<br />
the solution. To dissolve 2 in triethyl phosphate and add 0.04mol/L KOH aqueous and acetonitrile,<br />
then neutralise it by 2mol/L HCl at 0 o C achieved 3 in 60% overall yield and more than 99% purity<br />
after filtrating and recrystallization. The melting point and other spectra (IR, 1 H-NMR, 13 C-NMR,<br />
31 P-NMR) were in accord with the standard sample. The advantage of this method included its low<br />
cost, avoiding column chromatography, and the product could be prepared with moderate yield<br />
together with high purity.<br />
HO<br />
O<br />
N<br />
N<br />
NH 2<br />
N<br />
N<br />
POCl 3<br />
-5℃, 2h<br />
Cl<br />
O<br />
P<br />
Cl<br />
O<br />
O<br />
357<br />
N<br />
N<br />
NH 2<br />
N<br />
N<br />
KOH/CH3CN 0℃<br />
OH OH<br />
OH OH<br />
O P O OH<br />
1 2<br />
OH<br />
3<br />
Reference<br />
[1] R. Keith Borden, Michael Smith, J. Org. Chem., 1966, 31: 3247-3258.<br />
[2] Taguchi Y, Mushika Y, Bull. Chem. Soc. Jpn., 1957, 48: 1528-1532.<br />
[3] Genieser K, Yoshikawa M, Synthesis, 1989, 1: 53-54.<br />
[4] Kusashio K, Yoshikawa Y, Bull. Chem. Soc. Jpn., 1968, 41:142-149.<br />
Project supported by the National Natural Science Foundation of China (No. 20372018).<br />
O<br />
O<br />
N<br />
N<br />
NH 2<br />
N<br />
N
P-122<br />
SYNTHESIS AND HERBICIDAL ACTIVITY OF Α- [2-( FLUORO-SUBSTITUTED<br />
PHEMOXY)-PROPIONYLOXY] ALKYLPHOSPHONATES<br />
Yan-Jun Li Hong-Wu He*<br />
Key Laboratory of Pesticide & ChemicaBiology of Ministry of Education, Central China Normal UniversitWuhan<br />
430079, People’s Republic of China, *Corresponding author<br />
E-mail: hel208@mail.ccnu.edu.cn.<br />
The title compound was synthesized by the reaction of O,O-dimethyl 1-hydroxyalkyl<br />
phosphonate with 2-(fluoro-substituted phenoxy)propionyl chloride according to a literature<br />
procedure. O,O-dimethyl 1-hydroxyalkylphosphonate can be obtained by the reaction of dimethyl<br />
phosphite with several kinds of aldehydes using potassium fluoride and alumina (mass ratio was 1:1)<br />
as catalyst with yield of 56-88%. The synthesis of the title compounds could be completed with<br />
yield of 20-70% using triethylamine as catalyst and trap of acid . Structures of the 8 compounds<br />
were confirmed by 1 HNMR, IR, MS spectra and element analysis. The results of preliminary<br />
bioassay indicated that the title compounds exhibite better herbicidal activities.<br />
X<br />
Y<br />
1) NaOH<br />
2) HCl<br />
OH<br />
BrCH(CH 3)COOEt<br />
K 2CO 3<br />
358<br />
X<br />
Y<br />
OCHCOOEt<br />
CH 3<br />
X<br />
1) SOCl2 OCHCOOH<br />
Y 2) (CH3O) 2POCH(OH)R<br />
CH3 II<br />
I<br />
H 3CO<br />
H 3CO<br />
O<br />
O<br />
PCHOCCHO<br />
R<br />
CH 3<br />
III<br />
R=CH3,CCl3,4-CH3-Ph,4-F-Ph X,Y=2-F-H ,2-Cl-4-F<br />
Acknowledgments<br />
Financial support by National Basic Research Program of China (2003CB114400) and NNSFof<br />
China ( 20372023)<br />
References<br />
[1] He, H.-W.. Chin. Chem. Lett. 9, 415–416(1998).<br />
[2] He, H.-W.. Chin. J. Org. Chem. 23, 155–161 (2003).<br />
[3] Brayer Jean Lowis, Taliani Laurent, Tessier Jean. EP376819, 1990<br />
[4] Bleaker Springs, Paul Healbe. J.Org. Chem.,14(7),1165(1976)<br />
[5] Francoise Fexier-Bullet, Maryvonne Lequitte. Tetrahedron Lett.27(30),3515-3516(1986)<br />
X<br />
Y
P-126<br />
SYNTHESIS, CRYSTAL STRUCTURE AND BIOACTIVITIES OF DIMETHYL[(3,7-<br />
DICHLOROQUINOLIN-8-YL CARBONYLOXY) ALKYL] PHOSPHONATE<br />
Ying Liang Ya-Zhou Wang Hong-Wu He*<br />
Key Laboratory of Pesticide & Chemical Biology of Ministry of Education,Central China Normal University, Wuhan<br />
430079, People’s Republic of China. *E-mail: hel208@mail.ccnu.edu.cn<br />
3,7-dichloroquinolin-8-ylcarbonyloxy alkylphosphonate was synthesized by the reaction of<br />
3,7-dichloroquinoline-8-carbonyl chloride with O,O-Dimethyl-1-hydroxy alkyl phosphonates. The<br />
preparation of title compounds could be completed with good yields of 60-80%, by adding<br />
triethylamine(1.2 equiv) as catalyst and trap of acid. The best reaction time was 2-5 hours and the<br />
temperature was 2-15℃. All 14 compounds were confirmed by 1 HNMR, IR, MS spectra and<br />
element analysis. One of them was examined by the single crystal X-ray diffraction. The results of<br />
preliminary bioassay indicated that the title compounds exhibited a little better fungicidal activities<br />
than the starting compounds.<br />
Cl<br />
COCl<br />
N<br />
Cl<br />
O<br />
HC<br />
(CH3O) 2P<br />
R<br />
OH<br />
359<br />
CHCl 3<br />
Cl<br />
Cl O<br />
N<br />
O H C<br />
R<br />
R=H, alkyl, Ph, substituted Ph, Furyl.<br />
P OMe<br />
O<br />
OMe<br />
Acknowledgments<br />
This work was supported by the National Basic Research Program of China (No: 2003CB114400)<br />
and the National Natural Science Foundation of China (No: 20372023).
P-128<br />
THE INFLUENTIAL FACTOR ON SYNTHESIS OF L-PHE OLIGO-PEPTIDES<br />
MEDIATED BY POCl3<br />
Yingyan Yao 1 , Li Ma 1 , Kui Lu* 1 , Yufen Zhao 2<br />
1.School of Chemistry and Chemical Engineering, Henan University of Technology, Zhengzhou 450052, China;<br />
2.Department of Chemistry, Xiamen University, Xiamen 361005, China<br />
Phosphorus play vital roles in the chemical evolution of life, The recent years, Self-assembly into<br />
peptides for amino acids Mediated by inorganic phosphorus has become a focus of science research<br />
[1,2] In this paper, the reactions of self-assembly into oligo-peptides for L-Phe mediated by<br />
inorganic phosphorus were studied. To find the best experimental condition, the solvent, reaction<br />
time, reaction temperature, the molar ratio of L-Phe and POCl3 were examined. These results were<br />
found: the maximum length of peptides for L-Phe could reach hexapeptide, but time affected little<br />
the reaction of self-assembly into oligo-peptides for L-Phe; The percent conversion of L-Phe in<br />
THF was higher than that in 1,4-dioxane or acetonitrile, so THF was propitious to self-assembly<br />
into peptides for L-Phe; Hoisting temperature could also speed the reaction and facilitate to produce<br />
phosphoryl peptides, but too high(>50 ) would induce many ℃ side reactions; The reaction of<br />
self-assembly into oligo-peptides would be speeded by increasing initial concentration of L-Phe. In<br />
a word, the proper condition of direct synthesis was the molar ratio of L-Phe and POCl3 of 1 to 1,<br />
reaction temperature of 40℃, reaction time of 2h and in THF as solvent. A series of mass peaks<br />
corresponding to oligo-peptides of L-Phe were observed by electrospray ionization mass<br />
spectrometry (ESI-MS).<br />
Acknowledgements: The authors would like to thank the financial supports from the Chinese<br />
National Science Foundation (No.20272055, 20572016), Henan Province Science Foundation for<br />
Prominent Youth (No.0312000900) and Office of Education of Henan Province (No.<br />
2006KYCX017, 200510459015).<br />
360
References:<br />
1 Lu, K.; Liu, Y.; Zhou, N.; Chen, Y.; Feng, Y.-P. ; Guo, X.-F.; Chen, W.; Qu, L.-B.; Zhao, Y.-F. Acta Chim. Sinica<br />
2002, 60 , 372 (in Chinese).<br />
2 Zhou, N.; Lu, K.; Liu, Y.; Chen, Y.; Tang, G.; Cao, S.-X.; Qu, L.-B.; Zhao, Y.-F. Rapid Commun Mass Sp 2002,16<br />
(8) , 790<br />
361
P-131<br />
LONG-PERSISTENT FLUORESCENT FILMS OF EUROPIUM AND DYSPROSIUM<br />
CO-DOPED ALUMINATES<br />
Yuan Ming Huang, Fu-fang Zhou<br />
Department of Applied Physics, Shantou University, Guangdong 515063, China<br />
Flexible and long-persistent fluorescent thin films were obtained by casting polystyrene and<br />
epoxy with fine particles of long persistent phosphorus aluminates, which were prepared by<br />
combustion rare-earth dopants europium and dysprosium with aluminates at 600-800 o C. X-ray<br />
diffraction and photospectrometer were employed to characterize the structures and optical<br />
properties of the phosphorus aluminates in the flexible thin films. The flexibility of the thin films<br />
was tested for the thin films with various compositions of the phosphorus aluminates, and the<br />
effects of the two rare-earth dopants on the optical properties were also investigated. Based on the<br />
excitation and emission spectra of the thin films, the mechanisms of the long-persistent fluorescence<br />
were discussed. Our results have demonstrated that these phosphor-embedded flexible films can be<br />
used as flexible and foldable phosphorus screens.<br />
P-133<br />
AB INITIO STUDY ON THE TOXICITY OF ORGANIC<br />
PHOSPHORUS AGROCHEMICAL<br />
Zhang Yu<br />
College of Chemistry, Baotou Teacher’s College, Inner Mongolia<br />
University of Science and Technology, Baotou 014030, China. E-mail: btzhangyu@yahoo.com.cn<br />
Some organic phosphorus agrochemical have been studied with ab initio method. The bond<br />
length and toxicity of the phosphorus compound present positive related that between the<br />
phosphorus atom and the atom of the main functional group connect with each other. The total<br />
atomic charge of the phosphorus atom and toxicity of the organic phosphorus agrochemical present<br />
negative related.<br />
Refrences<br />
[1] Xu,Y.M.;Zheng,N. The domestic agrochemical application manual, Peking:Chinese agriculture original publisher<br />
1990,4-51<br />
[2] ChemHandbook3.0, Electronics version<br />
362
P-136<br />
PATTERN OF SEDIMENT PHOSPHORUS FRACTIONS IN A SHALLOW<br />
WULIANGSUHAI LAKE, CHINA: EFFECTS OF MACROPHYTES<br />
Zhenying Liu 1 , Zhaohui Jin 1 , Yawei Li 2 , Tielong Li 1 , Jiujun Gu 1 , Si Gao 1 , Xiaoyu Chai 1<br />
1<br />
College of Environmental Science and Engineering, Nankai University, Tianjin 300071, China;<br />
2<br />
Inner Mongolia Environment Protection Bureau, Hohhot 010018, China<br />
Sediment phosphorus fractions and profile distribution at submerged macrophyte growth zone,<br />
emergent macrophyte growth zone and open-water zone were studied in Wuliangsuhai Lake, China,<br />
as well as the correlations among water content, grain size, and organic matter and P fractions.<br />
Among three surveyed zones, the highest concentrations of most P forms occurred in the surface<br />
sediment and the lowest between a depth of 12 and 22 cm, except HCl-P and NaOH-P. Sediment<br />
phosphorus is mainly associated to inorganic forms (> 50%) in three surveyed areas, and the highest<br />
value of IP in the surface sediment was obtained from submerged macrophyte growth zone.<br />
Submerged and emergent macrophytes increased IP content by 107μg/g and 44μg/g in surface<br />
sediment compared with open-water zone, respectively. Vertical profiles of IP in three surveyed<br />
zones showed that the concentrations decreased from surface to12 cm depth and then increased.<br />
There was a similar trend in the sediment profiles of OP and TP, but the highest concentration of<br />
OP and TP in surface sediment was got from emergent macrophyte growth zone. Compared with<br />
open-water zone, emergent macrophyte increased TP content by 455μg/g in surface sediment, while<br />
submerged macrophyte enhanced TP content by 103μg/g in surface sediment. It was observed that<br />
in macrophyte growth zones a strong linear correlation existed between organic matter and OP<br />
(r>0.98), and the maximum concentrations of OP were present in the areas with maximum<br />
concentrations of organic matter. Results show that, although rooted macrophyte could uptake<br />
directly P from sediments, it is responsible for increasing internal P loading especially OP by<br />
reducing current velocities, attenuating wave energy and generating organic residue in<br />
Wuliangsuhai Lake.<br />
Key words: phosphorus fractions, profile distribution, emergent macrophyte, submerged<br />
macrophyte, open-water<br />
363
P-166<br />
NEW FUNCTIONALIZED PHOSPHORYL MEMBRANE CARRIERS OF ORGANIC AND<br />
NONORGANIC SUBSTRATES<br />
Krasnova N.S., Garifzyanov A.R., Cherkasov R.A.<br />
Kazan State University, A.M. Butlerov Chemistry Institute, 420008, Kremlevskaya str. 18, Kazan, Russia<br />
The methods of liquid and membrane extraction play the important role in technological<br />
processes, connected with concentration and selective separating of mineral, organic and biological<br />
substrates.<br />
Functionalized derivatives of four-coordinated phosphorus such as trioctylphosphineoxide,<br />
tributylphosphate and aminophosphoryl compounds were recommended as good membrane carriers.<br />
The purpose of work presented was the study the influence of structure of phosphoryl compounds<br />
on their membrane-transport properties.<br />
With this aim the series of compounds R2P(O)R’, where R=2-EtHexO, R’=NBu2 (I),<br />
R=2-EtHexO, R’=NEt2 (II), R=2-EtHexO, R’=NHBu (III), R=2-EtHexO, R’=NH(CH2)2NEt2 (IV),<br />
R=Oct, R’= NBu2 (V), R=DecO, R’=CH2NBu2 (VI), 2-EtHexO, R’=O(CH2)2NEt2 (VII), 2-EtHexO,<br />
R’=O(CH2)2NBu2 (VIII), have been synthesized. We have taken the sterically hindered substituents<br />
to make sure the high lipophilycity of membrane carriers.<br />
The compounds received differ with the dentaticity of the potential interaction with the substrates<br />
being carried as well as with the basicity of phosphoryl group. Perchloric, tartaric and oxalic acids<br />
have been chosen as substrates in this investigation. They are differ from each other by dissociation<br />
degree and by the number of potential linkage centers. Monoethanolamine also has been chosen as<br />
hidrofilic substrate wich is able to display both basic and proton-donating properties.<br />
It is established that values of streams fall back in ranks VI>V>VII>VIII>IV>III>I≈II (perchloric<br />
acid), VII>VI>V>I≈II>III (tartaric acid), V>VII>II>I≈IV>III>VI (oxalic acil),<br />
VII>V>VI>VIII>II≈I≈III≈IV (monoethanolamine).<br />
We revealed that the efficiency of the membrane transport growth parallel to both the increasing<br />
of the phosphoryl unit bacisity and the participation of the additional coordination center in the<br />
carrier-molecule.<br />
The work was realized under financial support of RFBR (grant № 04-03-32906).<br />
364
P-173<br />
HIGH THROUGHPUT SCREENING UNDER Zinc-DATABASE AND SYNTHESIS A<br />
DIALKYLPHOSPHINIC ACID AS A POTENTIAL KARI INHIBITOR<br />
Liu Xinghai, Chen Peiquan, Guo Wancheng, Wang Suhua, Li Zhengming*<br />
(The Research Institute of Elemento-Organic Chemistry, State-Key Laboratory of Elemento-Organic Chemistry, Nankai<br />
University, Tianjin 300071, P.R. China)<br />
Plants and microorganisms contain numerous enzymes that are potential targets for bioactive<br />
compounds such as herbicides. Ketol-acid reductoisomerase (KARI) is the second key enzymes<br />
involved the biosynthesis of the branched-chain amino acids: leucine, isoleucine and valine [1] . Our<br />
research wants to discover new herbicides. In the past research, we discover a new sulfonylureas<br />
herbicide — monosulfonylureas [2] .<br />
Today, throughput screening HTS is a novel technique system in pesticide innovation with the<br />
virtue of high efficiency, large-scale and automatics. Based on the reported crystal structure of<br />
complexes of the enzyme KARI, 200 molecules were obtained with predicted high affinity for<br />
KARI from ZINC-database(Drug-Like) searching, using program eHiTS [3] . A dialkylphosphinic<br />
acid was docked with KARI and estimated the pKi = -5.235. The interaction pattern between the<br />
titled compound and KARI was described. We synthesized the title compound. The KARI activity<br />
is under testing.<br />
The synthesized route of the title compound and the Docking result is listed in scheme 1 and<br />
figure 2 and 3.<br />
Si Cl NH3 Si Si H2POONH4 ClCH2COOCH3 HP(OSiMe)3<br />
N<br />
N(C<br />
H<br />
2H5) 3<br />
O<br />
O<br />
O<br />
O<br />
O<br />
P<br />
O Si C 2H 5OH O<br />
365<br />
O<br />
Scheme 1. The synthetic route of title compound<br />
Fig. 2 spinage KARI active site with title compound Fig.3 Superimposition of the docked<br />
conformation of title modeled into the binding pocket compound and IpOHA in complex with<br />
spinage KARI<br />
Acknowledgements<br />
O<br />
O<br />
O<br />
P<br />
OH<br />
HO<br />
HO<br />
O<br />
O<br />
O<br />
P<br />
OH
This work was funded by the National Basic Research Program of China (Grant No. 2003<br />
CB114406) and the high performance computing project of Tianjin Ministry of Science and<br />
Technology of China (grant number 043185111-5).<br />
Reference<br />
1. R.G. Duggleby, S.S. Pang, Acetohydroxyacid synthase, J. Biochem. Molec. Biol. 2000,33,1–36.<br />
2. Z.M. Li, G.F. Jia, L.X. Wang, Sulfonylurea compound herbicide, CN1106393, 1995,8,9<br />
3. http://www.simbiosys.ca/ehits/<br />
366
P-181<br />
A STUDY ON THE ORGANIC COMPOUNDS CONTAINING GERMANIUM AND<br />
PHOSPHOURS USING EI MASS SPECTROMETRY<br />
Liu Ruoyu 1 , Ye Yong 1 , Liao Xincheng 1 ,Qu Lingbo 1 , Zhao Yufen 1,2<br />
1.The Key Laboratory of Chemical Biology and Organic Chemistry of Henan Province, Department of Chemistry,<br />
Zhengzhou University, Zhengzhou 450052, China;<br />
2.The Key Laboratory for Bioorganic Phosphorus Chemistry and Chemical Biology, Ministry of Education, Department<br />
of Chemistry School of Life Sciences and Engineering, TsinghuaUniversity, Beijing 100084, China<br />
A series of organic compounds containing germanium and phosphours are studied by EI or<br />
ESI-MS. The positive or negative ions for these compounds are reported . The fragmentation<br />
pathways were investigated in details and its characteristics have been summarized. The<br />
fragmentation ions produced from EI or ESI provide complementary informatiom for the structure<br />
elucidation.<br />
References<br />
[1] Ye Yong: [Master Paper]. Tianjin. Chemistry Department of Nankai University. 1998<br />
[2] Zhu Xiaofei, Ye Yong, Zeng Qiang. Recent Advances of Anticancer Active Organic Compound Containing<br />
Phosphorus and Germanium. Tianjin Chemical Industry, 2002; 3:pp4~6<br />
367
P-189<br />
INVESTIGATION ON A HYDROXYL OXYGEN MIGRATION OF<br />
N-PHOSPHORYL DIPEPTIDES BY ELECTROSPRAY<br />
IONIZATION MASS SPECTROMETRY<br />
Huang Xiantong, Tang Guo, Lin Kan, Chen Yushen, Zhaoyufen *<br />
The Key Laboratory for Chemical Biology of Fujian Province, Department of Chemistry and College of Chemistry and<br />
Chemical Engineering, Xiamen University, Xiamen 361005, P. R. China.<br />
A novel rearrangement reaction with a hydroxyl oxygen migration was observed in the<br />
electrospray ionization tandem mass spectra of N-diisopropyloxyphosphoryl dipeptides . A possible<br />
mechanism was proposed and supported by the MS/MS study. It was found that metal ions could<br />
catalyze the rearrangement through a seven-membered ring intermediate.<br />
All peptides and their derivatives were synthesized in this laboratory by literature methods and<br />
phosphorylated according to our published methods. 1 chemicals for syntheses were purchased from<br />
Sigma (Shanghai, China)<br />
O<br />
O<br />
O<br />
O<br />
O<br />
P<br />
HN<br />
CH<br />
R1 O<br />
HN<br />
P<br />
M+Na<br />
O<br />
O<br />
O<br />
C<br />
HN<br />
Na<br />
OH<br />
R 2<br />
O<br />
368<br />
O O<br />
HN<br />
P<br />
O<br />
R 1<br />
O<br />
O<br />
HN<br />
P<br />
O<br />
R1 ONa<br />
H<br />
O<br />
C<br />
M+Na M+Na<br />
R 1<br />
O<br />
HN H<br />
P C<br />
ONa<br />
C O<br />
R 2<br />
HN<br />
-<br />
R 2<br />
OH<br />
O R 2<br />
ONa<br />
C<br />
N<br />
H<br />
OH<br />
Na<br />
M+Na<br />
Scheme1. proposed rearrangement mechanism for N-diisopropyloxyphosphoryl dipeptides<br />
Acknowledgement: the financial supports from the Ministry of Education Key Project (104201) and<br />
Fujian Key Foundation of Science and Technology (C03100)<br />
References<br />
[1] Ji GJ, Xue CB, Zeng JN, Li LP, Chai WG, Zhao YF, Synthesis 1988; 6: 444.<br />
N<br />
H<br />
O<br />
C<br />
O<br />
H 2 N<br />
R 2<br />
O<br />
R 2<br />
O
P-191<br />
INVESTIGATION ON THE PEPTIDES FORMATION FROM AMINO ACIDS REACTED<br />
WITH TRIMETAPHOSPHATE BY LC-MS<br />
Xiang Gao 1 , Yan Liu 1 , Pengxiang Xu 1 , Guo Tang, Yufen Zhao 1,2 *<br />
1. The Key Laboratory for Chemical Biology of Fujian Province, Department of Chemistry, College of Chemistry and<br />
Chemical Engineering, Xiamen University, Xiamen, 361005, P. R. China<br />
2. The Key Laboratory for Bioorganic Phosphorus Chemistry, Ministry of Education, Department of Chemistry, School<br />
of Life Sciences and Engineering, Tsinghua University, Beijing, 100084, P. R. China<br />
It was suggested that probably inorganic condensed phosphates, such as polyphosphate and<br />
trimetaphosphate, would have been the essential materials for the prebiotic evolution which<br />
preceded the emergence of life on the earth [1, 2]. In recent years, alternative methods for amino<br />
acids and small peptides analysis without derivatization have been proposed. Ion-pair<br />
chromatography and reversed-phase liquid chromatography were widely used to separate amino<br />
acids and small peptides by employing perfluorinated carboxylic acids as ion-pairing reagents on a<br />
silica based column. Furthermore, electrospray tandem mass spectrometry (ESI-MS) was an<br />
effective direct detector for analysis of underivatized amino acids and peptides due to its high<br />
sensitivity and incomparable specificity.<br />
Figure 1. The ESI-MS spectra for each amino acid treated with P3m. (A): Glycine reacted with P3m;<br />
(B): L-Alanine reacted with P3m; (C): β-Alanine reacted with P3m; (C): γ-Aminobutyric acid reacted<br />
with P3m<br />
The condensation reactions of single amino acid or each pair of amino acids such as glycine,<br />
L-alanine, β-alanine and γ-aminobutyric acid with sodium trimetaphosphate (P3m) were<br />
reinvestigated by electrospray ion-trap mass spectrometry (ESI-MS) and high performance liquid<br />
chromatography. It was found when treated by P3m only at the presence of α-amino acid did form<br />
peptide. Without α-amino acid, the β-amino acid or γ-amino acid could not form peptide either by<br />
themselves or with their mixtures under the same conditions. These experimental results might<br />
suggest that phosphate prefers choosing α-amino acids to produce the peptides for the origin of life.<br />
References<br />
[1] J. Rabinowitz, J. Flores, R. Krebsbach, G. Rogers, Nature 1969, 224: 795-796<br />
[2] Y. Yamagata, H. Watanabe, M. Saitoh, T. Namba, Nature 1991, 352: 516-519.<br />
369
Symposium 8<br />
Special Session Dedicated to the Late Professor L. Horner
KL-4<br />
OLEFINATION REACTION IN ORGANIC SULFUR CHEMISTRY AND SYNTHESIS OF<br />
NATURAL PRODUCTS<br />
Marian Mikolajczyk<br />
Center of Molecular and Macromolecular Studies, Polish Academy of Sciences 90-363 Lodz, Sienkiewicza 112, Poland<br />
371
IL-3<br />
2-HYDROXY- AND 2-AMINO-FUNCTIONAL ARYLPHOSPHINES-SYNTHESIS,<br />
REACTIVITY AND USE IN CATALYSIS<br />
J. Heinicke, a W. Wawrzyniak, a N. Peulecke, a B. R. Aluri, a P.G. Jones, b S. Enthaler, c M. Beller c<br />
EMA-University Greifswald a (Germany), Technical University Braunschweig b (Germany),<br />
Leibniz-Institute of Catalysis Rostock c (Germany)<br />
Syntheses of 2-phosphinophenoles [1] and 2-hydroxy-1,1’-biaryl-2-phosphines [2] and separation<br />
of diastereoisomeric (1S)-camphanoates of asymmetric derivatives were studied. The absolute<br />
configuration of two pure enantiomers was determined by crystal structure analysis. Other<br />
camphanoates preferred cocrystallization of different isomers in the asymmetric unit. First catalytic<br />
studies displayed ee’s up to 60%.<br />
P<br />
OSiMe3 R2<br />
R1 nBuLi<br />
SiPPOPhos-tBuMe: R1 =Me, R2 =tBu<br />
SiPPOPhos-tBupTol: R1 =tBu, R2 =p-Tol<br />
SiPPOPhos-tBuMes: R1 =tBu, R2 =Mes<br />
SiPPOPhos-An2: R1 =R2 =o-An<br />
R 1<br />
P<br />
OLi<br />
R2<br />
Cl<br />
O<br />
O<br />
O<br />
R 1<br />
372<br />
P<br />
O<br />
R2<br />
O<br />
CaPPOPhos-tBuMe: R1 =Me, R2 =tBu<br />
CaPPOPhos-tBupTol: R1 =tBu, R2 =p-Tol<br />
CaPPOPhos-tBuMes: R1 =tBu, R2 =Mes<br />
CaPPOPhos-An2: R1 =R2 =o-An<br />
N-Substituted 2-phosphinoanilines, synthesized via anilino- or anilidophosphonates, have been<br />
used in the synthesis of N-alkyl- or N-aryl-1,3-benzazaphospholes. These are particularly stable<br />
annulated heterophospholes [3]. Reaction with t-BuLi allows lithiation in 2-position without attack<br />
at the P=C bond and introduction of various functional groups. However, addition is also possible.<br />
This opens a novel access to heterocyclic ethylene-bis(phosphine) ligands.<br />
Reference<br />
[1] J. Heinicke, N. Peulecke, M. Köhler, M. He, W. Keim, J. Organomet. Chem., 2005, 690, 2449.<br />
[2] P. Wawrzyniak, PhD thesis, Greifswald, 2006.<br />
[3] R. K. Bansal, J. Heinicke, Chem. Rev. 2001, 101, 3549-3578. B.R. Aluri, unpublished.<br />
O<br />
O
IL-4<br />
ENANTIOSELECTIVE SYNTHESIS OF P-CHIROGENIC PHOSPHORUS COMPOUNDS<br />
VIA THE EPHEDRINE-BORANE COMPLEX METHODOLOGY<br />
Sylvain Juge<br />
Inst. Chim. Mol. Université de Bourgogne,UMR CNRS 5620, 9 av. A. Savary,<br />
21078 Dijon, France; Fax 33 3 80 39 60 98 Email: Sylvain.Juge@u-bourgogne.fr<br />
In spite of the pioneering work of Horner 1 and Knowles, 2 phosphines bearing chirality on the<br />
phosphorus atom have not been very used in asymmetric catalysis until now, mainly due to the<br />
difficulty of their stereoselective preparation. Nevertheless, in the recent past, significant progresses<br />
have been realized for the P-chirogenic compounds, likewise owing to the ephedrine-borane<br />
methodology. 3<br />
BH 3<br />
Ph<br />
P<br />
Ph<br />
O Me<br />
N<br />
Me<br />
2<br />
(+)-ephedrine<br />
1<br />
R 1 Li<br />
BH 3<br />
R P<br />
Ph<br />
3<br />
1<br />
N<br />
Me<br />
OH<br />
Me Ph<br />
P R<br />
Ph<br />
1<br />
HX<br />
X<br />
4<br />
tBuLi<br />
The principle of this method is based on two key step:<br />
- the diastereoelective preparation of an oxazaphospholidine borane complex 2 derived from<br />
(+)-ephedrine 1, in one step.<br />
- the regio and stereoselective P-O bond cleavage by reaction with an organolithium reagent to<br />
afford the aminophosphine borane 3.<br />
The acidolysis or the methanolysis of the compound 3 affords then the corresponding<br />
P-chirogenic chlorophosphine boranes 4 (X=Cl) or phosphinite boranes 4 (X=OMe) respectively,<br />
which are used as P-chirogenic electrophilic building blocks. Recently, a new development was<br />
showed, with the preparation of the phosphide boranes 5 by metal-halide exchange starting from the<br />
chlorophosphine boranes 4, affording thus useful P-chirogenic nucleophilic building blocks.<br />
The efficiency of this methodology is demonstrated by the possibility of preparing various<br />
kinds of phosphorus compounds in high e.e. bearing the chirality on phosphorus atom (bulky or<br />
functionnalized phosphines, secondary phosphines, phosphinites, aminophosphines...). Moreover,<br />
as the purification of free phosphorus trivalent compounds is not always possible, the direct use of<br />
their borane complexes for the synthesis or the catalysis, is a useful alternative. Thus, phosphonium<br />
salts, phosphorylated (P=O) or thiophosphorylated (P=S) derivatives, could be stereoselectively<br />
prepared from borane complexes without isolation of the P (III) intermediate. In the same way, the<br />
organophosphorus borane complexes give also the opportunity to use unstable ligands in<br />
coordination chemistry or to generate catalysts.<br />
References<br />
1) L. Horner, H. Siegel, H. Büthe Angew. Chem. Int. Ed. 1968, 942.<br />
373<br />
BH 3<br />
Li<br />
BH 3<br />
P<br />
5<br />
R<br />
Ph<br />
1
2) W.S. Knowles, M.J. Sabacky J.C.S. Chem. Commun. 1968, 1445.<br />
3) a) Moulin, D.; Bago, S.; Bauduin, C.; Darcel, C.; Jugé, S. Tetrahedron: Asymmetry 2000, 11, 3939. b) C. Darcel, El<br />
B. Kaloun, R. Merdès, D. Moulin, N. Riegel, S. Thorimbert, J. P. Genêt, S. Jugé J. Organomet. Chem., 2001, 624, 333.<br />
c) S. Humbel, C. Bertrand, C. Darcel, C. Bauduin, S. Jugé Inorg. Chem. 2003, 42, 420. e) J.M. Camus, J. Andrieu, P.<br />
Richard, R. Poli, C. Darcel, S. Jugé Tetrahedron: Asymmetry 2004, 15, 2061. f) C. Bauduin, D. Moulin, El B. Kaloun,<br />
C. Darcel, S. Jugé J. Org. Chem. 2003, 11, 4293. g) C. Darcel, D. Moulin, J.C. Henry, M. Lagrelette, P. Richard, P.<br />
Harvey, S. Jugé Eur. J. Org. Chem. 2007, in press.<br />
374
IL-5<br />
UMPOLUNG IN HORNER REACTION: PHOSPHORAMIDATES AS A SOURCE OF<br />
P-CHIRAL ORGANOPHOSPHATES<br />
Wojciech Jacek Stec and Janina Baraniak<br />
Department of Bioorganic Chemistry, Centre of Molecular and Macromolecular Studies, Polish Academy of Sciences,<br />
112 Sienkiewicza Str., 90-363 Łódź, Poland<br />
The discovery that organophosphorus ylides and phosphonate anions ract with carbonyl<br />
electrophiles leading to olefins had an enormous impact on the art of organic synthesis. Although<br />
similar reactions of numerous phosphoramidate anions have been also studied, interest in the<br />
synthesis of unsaturated C=N systems has overshadowed interest in the fate of the second product<br />
of the Horner-Wadsworth-Emmons reaction, namely, dialkyl (diaryl) phosphates or<br />
phosphorothioates.<br />
However, the growing interest in the stereospecific synthesis of P-chiral organophosphates and<br />
phosphorothioates, and especially the demonstration of the use of phosphorothioates as tools for<br />
investigating the mode of action of numerous phosphoryl transfer catalyzing enzymes, focused the<br />
attention of several research groups on methods for the stereospecific preparation of P-chiral<br />
phosphates and phosphorothioates. In this laboratory studies were undertaken on the application of<br />
the Horner-Wadsworth-Emmons reaction using covalent diastereomeric phosphoramidates for the<br />
preparation of enantiomeric organophosphates, organophosphorothioates, and organophosphoroselenoates.<br />
Special attention was focused upon the stereochemical consequences of this reaction,<br />
also called by the authors PN→PX conversion (X= S, Se, O) [1]<br />
It turned out that the development of our synthetic approach involving the preparation of P-chiral<br />
phosphoramidates followed by the replacement of an amidate function by oxygen, sulfur, or<br />
selenium, opened the way to the stereospecific preparation of a variety of P-chiral derivatives of<br />
phosphorus acids, including numerous biophosphates and their analogues [2]<br />
Application of title reaction for the preparation of diastereomerically pure P-chiral cyclic<br />
nucleotide analogues (phosphorothioates, phosphoroselenoates, phosphoroselenothioates,<br />
isotopomeric 18O-phosphates), and P-chiral nucleoside monophosphate analogues, as well as<br />
dinucleoside phosphate analogues (phosphorothioates, methanephosphonates and their thio- and<br />
seleno-congeners) will be presented.<br />
Reference<br />
[1].W. J. Stec: Wadsworth-Emmons Reaction Revisited. Acc. Chem. Res., 1983, 16, 411<br />
[2].L. A. Woźniak and A. Okruszek: The stereospecific syntheses of P-chiral biophosphates and their analogs by the<br />
Stec reaction. Chem. Soc. Rev. 2003, 32, 158-169.<br />
375
IL-6<br />
SYNTHESIS AND APPLICATIONS OF PHOSPHONATES PREPARED FROM<br />
ELECTROPHILIC PHOSPHORUS REAGENTS<br />
David F. Wiemer<br />
Department of Chemistry, University of Iowa, Iowa City, IA 52242, USA . E-mail: david-wiemer@uiowa.edu<br />
Classical methods for synthesis of β-keto phosphonates and α-phosphono esters and lactones rely<br />
upon phosphorus nucleophiles for formation of the carbon-phosphorus bonds. To complement these<br />
traditional strategies, and provide access to novel phosphonates not readily available via these<br />
methods, we have explored approaches that employ phosphorus electrophiles and carbon<br />
nucleophiles. For example, P(V) electrophiles react with enolates derived from cyclic ketones to<br />
afford the vinyl phosphates, but in some cases the cyclic vinyl phosphates will rearrange to β-keto<br />
phosphonates upon reaction with excess strong base. Enolates derived from lactones and some<br />
esters undergo parallel reactions. In contrast, P(III) electrophiles can react with enolates directly at<br />
the carbon terminus, and subsequent oxidation will afford the β-keto phosphonate or α-phosphono<br />
esters/lactones. Variations on these strategies have been used to provide a variety of synthetic<br />
intermediates for use in reactions like the Horner-Wadsworth-Emmons condensation, as well as to<br />
prepare phosphonate analogues of natural phosphates. The preparation of specific target compounds<br />
as well as some further applications of these phosphonates will be presented.<br />
376
IL-7<br />
DEVELOPMENT OF NOVEL CHIRAL PHOSPHORUS LIGANDS FOR<br />
ENANTIOSELECTIVE HOMOGENEOUS AND HETEROGENEOUS CATALYSIS<br />
Kuiling Ding<br />
State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of<br />
Sciences, 354 Fenglin Road, Shanghai 200032 Fax: +86-21-6416-6128. E-mail: kding@mail.sioc.ac.cn<br />
Development of practical protocols for asymmetric synthesis of optically active compounds<br />
represents a great challenge in the area of chiral chemistry, in which the efficiency and the recycle<br />
of the chiral catalysts are key issues. Two strategies for the development of practical asymmetric<br />
catalysis will be discussed in this presentation. The first part of this presentation will focus on the<br />
design, synthesis and application of chiral catalysts composed of phosphorous ligands for<br />
homogeneous asymmetric reactions. [1]<br />
RO 2C<br />
CO 2R<br />
O<br />
R<br />
N<br />
N<br />
O<br />
O<br />
377<br />
R'<br />
P N<br />
R'<br />
Ar2P PAr2 R<br />
Y O X<br />
DICP DpenPhos<br />
CydamPhos<br />
up to 99% yield and >98.9% ee<br />
for Pd-catalyzed allylic substitution<br />
up to 99% yield and >99% ee<br />
for Rh(I)-catalyzed hydrogenations<br />
up to 99% yield and >99% ee<br />
for Rh(I)-catalyzed hydrogenation<br />
Y<br />
N<br />
N<br />
O<br />
X<br />
O<br />
O<br />
Z<br />
P N<br />
Z<br />
The second part will present a conceptually new strategy, i.e. “self-supporting” approach, for<br />
the immobilization of homogeneous catalysts through self-assembly of chiral multi-topic ligands<br />
and metal ions without using any support. The success of this strategy will be demonstrated in<br />
heterogeneous asymmetric hydrogenation reactions of functionalized olefins and ketones using<br />
self-supported chiral phosphorous ligand/metal catalysts. [2]<br />
+<br />
+ +<br />
multitopic chiral<br />
phosphorous ligands<br />
metallic ion<br />
n<br />
self-supported catalysts<br />
References<br />
[1] (a) Zhao, D.; Ding, K. Org . Lett. 2003, 5, 1349-1351. (b) Zhao, D.; Sun, J.; Ding, K. Chem. Eur. J. 2004, 10,<br />
5952-5963. (c) Zhao, D.; Wang, Z.; Ding, K. Synlett. 2005, 2067-2071. (d) Zhao, B.; Wang, Z.; Ding, K. Adv. Synth. Cat.<br />
2006, 348, 1049-1057. (e) Jing, Q.; Sandoval, C. A.; Wang, Z,; Ding, K. Eur. J. Org. Chem. 2006, 3606-3616. (f) Jing,<br />
n
Q.; Zhang, X.; Sun, J.; Ding, K. Adv. Synth. Cat. 2005, 347, 1193-1197. (g) Liu, Y.; Ding, K. J. Am. Chem. Soc. 2005,<br />
127, 10488-10499. (h) Liu, Y.; Sandoval, C. A.; Yamaguchi, Y.; Zhang, X.; Wang, Z.; Kato, K.; Ding, K. J. Am. Chem.<br />
Soc. 2006, 128, 14212 - 14213.<br />
[2] (a) Wang, X.; Ding, K. J. Am. Chem. Soc. 2004, 126, 10524-10525. (b) Liang, Y.; Jing, Q.; Li, X.; Shi, L.; Ding, K.<br />
J. Am. Chem. Soc. 2005, 127, 127, 7694-7695. (c) Liang, Y.; Wang, Z.; Ding, K. Adv. Synth. Cat. 2006, 348, 1533-1538.<br />
(d) Shi, L.; Wang, X.; Sandoval, C. A.; Li, M.; Qi, Q.; Li, Z.; Ding, K. Angew. Chem. Int. Ed. 2006, 45, 4108-4112. (e)<br />
Ding, K.; Wang, Z.; Wang, X.; Liang, Y.; Wang, X. Chem. Eur. J. 2006, 12, 5188-5197.<br />
Acknowledgement: I am grateful to the National Natural Science Foundation of China, the Major Basic Research<br />
Development Program of China (Grant no. 2006CB806106), and CAS for financial support of this work.<br />
378
O-34<br />
CHIRAL PHOSPHORUS-CONTAINED CALIXARENES<br />
S.O.Cherenok, V.I.Boiko, V.I.Kalchenko<br />
Institute of Organic Chemistry, Natl. Acad. of Sci. of Ukraine, 02660, Kyiv-94, Ukraine. E-mail: vik@bpci.kiev.ua<br />
www.ioch.kiev.ua/calix<br />
Macrocyclic compounds are ubiquitous as synthetic receptors in bio-organic and supramolecular<br />
chemistry. Incorporation of phosphorus-containing binding groups on the macrocyclic platform<br />
enable supramolecular interactions to be defined a priori, having broad ramifications for chemistry,<br />
physics, biology and material science. This paper presents synthesis and functional properties of<br />
phosphorus-containing chiral calixarenes having three-dimensional molecular cavities, within the<br />
context of molecular recognition and bio-activity.<br />
Two types of phosphorus-containing chiral calixarenes are discussed. They are: (i) calixarenes<br />
that have chirality induced by the asymmetric placement of achiral (or chiral) substituents at the<br />
upper or lower rim of the macrocycle [1,2] , and (ii) compounds functionalized by chiral<br />
substituents [3,4] .<br />
Calix[4]arene bis-α-hydroxyphosphonic acids as pure Meso and Racemic forms were synthesized<br />
through the reactions of diformylcalixarenes with thrialkylphosphites or sodium dialkylphosphites [4] .<br />
Chiral calix[4]arene α-aminophosphonic acids were obtained through the diastereoselective<br />
Pudovik-type addition of sodium diethylphosphites to the chiral calixarene imines [4] .<br />
NR<br />
X<br />
Y X Y<br />
RHN<br />
*<br />
R = CH(Ph)CH3 ( -)(S)<br />
R = CH(Ph)CH *<br />
3 (+)(R)<br />
(EtO) 2P(O)H Na<br />
EtO<br />
EtO<br />
R<br />
O<br />
P<br />
H<br />
N<br />
X<br />
Y X Y<br />
N<br />
H<br />
*<br />
*<br />
(SR, RS)<br />
(RS, SR)<br />
R<br />
OEt<br />
P<br />
OEt<br />
O<br />
H 2<br />
Pd(C)<br />
379<br />
EtO<br />
EtO<br />
X = OH, Y= OPr<br />
N<br />
H 2<br />
O<br />
O<br />
P *<br />
NH2 HO<br />
HO<br />
P *<br />
X<br />
Y X Y<br />
*<br />
(R, R)<br />
(S, S)<br />
OEt<br />
P<br />
OEt<br />
O<br />
1. Me3SiBr 2. MeOH<br />
N<br />
H 2<br />
X<br />
Y X Y<br />
A difference in the host-guest complexation parameters of aminoacids or dipeptides with<br />
Racemic and Meso forms of cailxarene bis-hydroxyphosphonic acid is observed [3] . The calixarene<br />
aminophosphonic acids show inhibitory activity toward porcine kidney alkaline phosphatase that<br />
strongly depends on the absolute configuration of the α-carbon atoms [4] .<br />
References<br />
[1] Tairov M.A., Vysotsky M.O., Kalchenko O.I., Pirozhenko V.V., Kalchenko V.I. J. Chem. Soc. Perkin Trans. 1. 2002.<br />
1405-1411.<br />
[2] Boyko V.I., Shivanyuk A., Pyrozhenko V.V., Zubatyk R.I., Shishkin O.V., Kalchenko V.I. Tetrahedron Letters. 2006.<br />
47. 7775-7778.<br />
[3] Zielenkiewicz W., Marcinowicz A., Cherenok S., Kalchenko V., Poznański J.. Supramolecular Chemistry. 2006.<br />
18. 167-176.<br />
[4] Cherenok S., Vovk A., Muravyova I., Shivanyuk A., Kukhar V., Lipkowski J., Kalchenko V. Organic Letters.<br />
2006. 8. 549-5<br />
*<br />
(R, R)<br />
(S, S)<br />
NH 2<br />
OH<br />
P<br />
OH<br />
O
AUTHOR INDEX
A<br />
Abdrakhmanova, L. M. 40<br />
Adachi, Kazutaka 113<br />
Adam, M. S. S. 155<br />
Agou, Tomohiro 24<br />
Ahn Vu, Erika Shaffer 30<br />
Aladzheva, Inga M. 62<br />
Aleksandrova, Anastasia V. 14,111<br />
Aleksanyan, D. V. 87<br />
Alfonsov, Vladimir A. 41, 70, 75,78, 90, 352<br />
Allen, Christopher W. 167<br />
Aluri, B. R. 155, 372<br />
Amerkhanova, N. K. 179<br />
Angermann, J. 282<br />
Antipina, M. Yu. 291<br />
Arduengo, Anthony J. 161<br />
Armentano, Maria Francesca 189<br />
Artemkina, I. M. 165<br />
Artyushin, O. I. 20,291<br />
Asai, Kazuhide 43<br />
Ashkenazi, Nissan 39<br />
Auclair, M. L. 118,119<br />
Ausín, Cristina 190<br />
Au-yeung, Steve C. F. 236<br />
B<br />
Babashkina, Maria G. 149<br />
Badeeva, E. K. 178<br />
Bagautdinova, R. Kh. 6<br />
Baier, I. 47<br />
Bala, Joy Lynn F. 302<br />
Balassa, Annamária 143<br />
Balueva, A. S. 146, 166<br />
Bao, Rui 293, 294,338, 349<br />
Baraniak, Janina 186, 375<br />
Baranov, S. V. 142<br />
Barnett, B. L. 259, 278<br />
Barten, Jan 28<br />
Batra, Vinod K. 222<br />
Batyeva, Elvira S. 178, 352<br />
Bauduin, C. 156<br />
Bayandina, Еvgenia V. 90<br />
Bayardon, J. 228<br />
Beard, William A. 222<br />
Beasley, Duane 276<br />
Beaton, Sarah K. D. 50<br />
Beaucage, Serge L. 190<br />
381<br />
Belaj, Ferdinand 54<br />
Beller, M. 372<br />
Bendikov, Michael 39<br />
Berdnik, I. V. 61<br />
Berdnikov, E. A. 114<br />
Bergsträßer, H. 136<br />
Berlicki, Łukasz 279<br />
Beylis, Irena 67<br />
Bezgubenko, L. V. 83<br />
Bilge, Selen 13<br />
Blackburn, G. Micheal 2<br />
Blann, Kevin 329<br />
Bod, Henriette de 329<br />
Bódis, Ádám 44<br />
Bogdanov, A. V. 22, 49<br />
Boiko, V. I. 379<br />
Bontemps, S. 130<br />
Borisova, Yu. Yu. 179<br />
Bouhadir, G. 130<br />
Bourissou, D. 130<br />
Bozkurt, S. 112<br />
Breuer, Eli 67, 271<br />
Brunet, Ernesto 331<br />
Bruzik, Karol 194<br />
Brzezińska Rodak,<br />
Małgorzata<br />
19, 27<br />
Budnikova, Yu. H. 61, 177, 321<br />
Burck, S. 247<br />
Burel, Laure 274, 292, 301<br />
Burilo, A. R. 18, 47<br />
Burkov, K. A. 244<br />
Burnaeva, L. A. 35<br />
Burnaeva, L. M. 40, 179<br />
Buzykin, B. I. 49<br />
Bykhovskaya, Olga V. 62<br />
C<br />
Cai, Fei 73,171<br />
Cai, Puqin 307, 309<br />
Calichman, Michael 167<br />
Cao, L. H. 273<br />
Cao, Lifeng 298<br />
Cao, Shuxia<br />
68, 102, 207, 229, 347,<br />
351<br />
Cao, Weina 91, 212, 217<br />
Capon, J. F. 148<br />
Caporali, Maria 170<br />
Carlos, Juan 331<br />
Cartier, Dominique 274<br />
Caruthers, Marvin H. 188<br />
Chachkov, D. V. 99, 242
Chai, Xiaoyu 363<br />
Chandra, Richard 327<br />
Chandrasekaran, A. 159<br />
Chattopadhyaya, Jyoti 268<br />
Chen, Caibao 97<br />
Chen, Guanhua 238<br />
Chen, Gui 131<br />
Chen, Li 185<br />
Chen, Peiquan 365<br />
Chen, Ruyu 16, 108, 206, 269, 336<br />
Chen, Weizhu 232, 308<br />
Chen, Xiaobao 353<br />
Chen, Xiaolan<br />
72, 82, 106, 202, 204, 224,<br />
258, 302<br />
Chen, Yan 100<br />
Chen, Yushen 368<br />
Chen, Zhao 338, 349<br />
Cheng, Fang 310<br />
Cheng, Hisn-Mei 245<br />
Cheong, Yuenki 94, 107<br />
Cherenok, S. O. 214, 284, 379<br />
Cherkasov, Rafael A. 35, 60, 114, 115, 140, 142,<br />
149, 254, 295, 364<br />
Cherkin, K. Yu. 21<br />
Chernega, Aleksandr N. 120<br />
Chmutova, G. A. 75<br />
Chu, Sanyan 245<br />
Chuiko, A. L. 76, 290<br />
Clément, Jean Claude 274, 292, 301<br />
Colson, A. 228<br />
Congiardo, Laura K.<br />
Byington<br />
30<br />
Cosgrove, Nichola E. 80<br />
Cristau, Henri Jean 139<br />
Cui, Zhanwei 108, 206, 269<br />
Czernicka, Anna 277<br />
D<br />
Darcel, C. 118, 119, 156, 228<br />
Delépine, Pascal 274, 292, 301<br />
Deme, János 44<br />
Demiriz, Semsay 13<br />
Demkowicz, Sebastian 38<br />
Didkovskii, N. G. 14<br />
Dielmann, F. 173<br />
Dimukhametov, M. N. 40<br />
Ding, Kuiling 377<br />
Ding, Mingwu 283<br />
Ding, Yixiang 153<br />
Dix, I. 117<br />
Dixon, John T. 329<br />
382<br />
Dobrynin, A. B. 49, 243<br />
Dobrynin, Alexey B. 70<br />
Docherty, Gordon 326<br />
Dogadina, Alla V. 14, 111<br />
Dong, Zhenrong 131<br />
Du, Ya 73, 171<br />
Duan, Chunjian 204<br />
Duan, Haifeng 150, 152<br />
Dudás, Eszter 56<br />
Duncanson, Philip 94, 107<br />
Dunford, J. 259, 278<br />
Durova, Oxana 189<br />
E<br />
Ebetino, F. H. 259, 278<br />
Ekici, S. 112<br />
Engelhardt, Johnnie 276<br />
Enthaler, S. 372<br />
Ermolaev, Yevgeniy S. 352<br />
Evdokimov, A. G. 259<br />
F<br />
Fang, Hua 122, 230, 257, 304, 305<br />
Fang, Meijuan 304, 305<br />
Feng, Dexin 16<br />
Feng, Yezhen 216<br />
Férec, Claude 274, 292, 301<br />
Field, Martin J. 235<br />
Floch, P. L. 129<br />
Fogassy, Elemér 44<br />
Forlani, Giuseppe 279<br />
Frant, Julia 67<br />
Freese, Dirk 323<br />
Freund, Amy 167<br />
Freytag, Matthias 84, 145<br />
Friboulet, Alain 189<br />
Fu, Boqiao 196<br />
Fu, Chuan 116<br />
Fu, Hua 157<br />
Fujie, Michio 43<br />
G<br />
Gabibov, Alexander G. 189<br />
Gabrielli, William 329<br />
Gaffney, Barbara L. 266<br />
Ganushevich, Yulia 170<br />
Gao, Feng 92
Gao, Jingxing 131<br />
Gao, Si 363<br />
Gao, Xiang 369<br />
Gao, Yuxing 232, 308<br />
Garifzjanov, Airat R. 35, 295, 364<br />
Gataulina, Alfiya N. 140<br />
Gataulina, I. F. 254<br />
Gates, Derek P. 168<br />
Gavrilova, E. L. 18<br />
Gazizova, A. A. 99, 242<br />
Genkina, G. K. 48<br />
Giamarchi, Philippe 274, 292, 301<br />
Gilheany, D. G. 45<br />
Gledhill, Alexandra C. 176<br />
Gloaguen, F. 148<br />
Gololobov, Gennady 189<br />
Gomès, M. 119, 156<br />
Gonsalvi, Luca 170<br />
Goodman, Myron F. 222<br />
Gorenstein, David G. 276<br />
Goss, Wieslawa 199<br />
Govorun, Vadim 189<br />
Grabowiecka, Agnieszka 279<br />
Grajkowski, Andrzej 190<br />
Graznova, T. V. 321<br />
Gregoriades, L. J. 173<br />
Griffiths, D. Vaughan 77, 94, 107, 280<br />
Groombridge, H. J. 280<br />
Gryaznova, T. V. 177<br />
Gryshkun, E. V. 32<br />
Gu, Jiujun 363<br />
Guan, Jintao 100<br />
Gubaidullin, A. T. 179<br />
Gudat, D. 247<br />
Guillouzic, Anne Françoise 139<br />
Guliaiko, Irina V. 32, 63<br />
Guo, Chun 307<br />
Guo, Haiming 357<br />
Guo, Wancheng 365<br />
Guo, Yanchun 68, 102, 351<br />
Guo, Yingcen 103<br />
Guo, Zhongcheng 180<br />
H<br />
Habicher, W. D. 47<br />
Hajdók, I. 247<br />
Hall, Roger G. 317<br />
Han, Daxiong 341<br />
Han, Jiecai 334<br />
383<br />
Han, Libiao 8, 297<br />
Han, Qianwei 266<br />
Han, Xiao 94<br />
Han, Ying 345<br />
Haritha, Buchammagari 43<br />
Hartsock, Robert 30<br />
Harvey, P. D. 156<br />
Hayakawa, Yoshihiro 265<br />
He, Dacheng 225<br />
He, Hongwu<br />
81, 86, 93, 213, 318,<br />
330, 342, 356, 358, 359<br />
He, Jing 325<br />
He, Liangnian 73, 171<br />
He, Lijun 354<br />
He, Zhengjie 52<br />
Heinicke, J. 117, 155, 372<br />
Hendrix, William H. 320<br />
Henry, J. C. 118, 119, 156<br />
Hettel, Sonja 335<br />
Heydt 136<br />
Hey-Hawkins, E. 10, 36, 146, 166, 174, 243<br />
Higham, L. J. 45<br />
Hilfinger, John M. 303<br />
Hiney, R. M. 45<br />
Hiresova, Renata 201<br />
Hissler, Muriel 162<br />
Hofmann, U. 136<br />
Hogan, J. 259<br />
Hoge, Berthold 335<br />
Hohl, Raymond J. 286<br />
Hohmann, Emília 56<br />
Holland, Eric C 197<br />
Holmes, Robert 159<br />
Höltzl, T. 246<br />
Hor, T. S. Andy 134<br />
Hou, Guohua IV, 55<br />
Hou, Jianbo 253<br />
Hu, Anfu 227<br />
Hu, Jia 233<br />
Hu, Liming 151<br />
Hu, Thomas Q. 327<br />
Hu, Xiaolian 346<br />
Hu, Yanggen 283<br />
Huang, Chaobiao 181<br />
Huang, Jing 196<br />
Huang, Shiwen 187<br />
Huang, Xiantong 123, 368<br />
Huang, You 16, 336<br />
Huang, Yuanming 362<br />
Hulisani Maumela, M 329
I<br />
Ionin, Boris I. 14, 111<br />
Ishmaev, E. A. 99, 242<br />
Ito, Shigekazu 84, 145, 161<br />
Ivkova, Gul’nara A. 35, 179, 295<br />
Izawa, Masatoshi 37<br />
J<br />
Jaffrès, Paul-Alain 148, 274, 292, 301<br />
James, Brian R. 327<br />
Jaspers, D. 112<br />
Ji, Tao 122<br />
Ji, Yubin 288<br />
Ji, Zhiliang 305<br />
Jia, Guochen 135<br />
Jia, Yixia 150, 152<br />
Jiang, Lan 69, 345<br />
Jiang, X. D. 241<br />
Jiang, Yuyang<br />
157, 221, 300, 307, 309, 311,<br />
312<br />
Jin, Linhong 275<br />
Jin, Peiyuan 203<br />
Jin, Weiwei 97<br />
Jin, Xuanye 223<br />
Jin, Zhaohui 363<br />
Johnson, B. P. 173<br />
Jones, P. G. 117, 155, 372<br />
Jones, Roger A. 266<br />
Ju, Yong 101, 203, 223<br />
Ju, Zhiyu 66, 346<br />
Juanes, Olga 331<br />
Jugé, Sylvain 118, 119, 156, 228, 373<br />
Juhlin, Lars 169<br />
K<br />
Kachkovskyi, G. A. 285<br />
Kachkovskyi, G. O. 32<br />
Kaczmarek, Renata 186<br />
Kafarski, Paweł 19, 27, 200, 277, 279, 281<br />
Kakuda, K. I. 241<br />
Kalchenko, V. 214<br />
Kalchenko, V. 214, 284, 379<br />
Kaljurand, Ivari 28<br />
Kang, Suk Jin 17<br />
Kano, Naokazu 57<br />
Kapustin, E. G. 83<br />
Karasik, A. A. 10, 146, 166, 243<br />
Karton, Yishai 39<br />
Kashemirov, Boris A. 70, 90, 222, 259, 278, 302,<br />
384<br />
Kataev, А. V.<br />
303<br />
174<br />
Kataeva, Olga N. 70, 75, 78, 90, 146, 243<br />
Kato, Kiyotoshi 37<br />
Kavanagh, K. 259<br />
Kawashima, Takayuki 5, 24, 57, 85<br />
Kaziev, G. Z. 273<br />
Kee, Terence P. 80, 176<br />
Keglevich, György 44, 56, 143, 252<br />
Kerényi, Andrea 143<br />
Kevill, Dennis N. 17<br />
Khailova, N. A. 6<br />
Khakimov, Maxim V. 295<br />
Khasiyatullina, N. R. 22<br />
Khusainov, M. A. 254<br />
Khusainov, N. G. 114, 254<br />
Kibardina, Ludmila K. 6, 78<br />
Kilic, Zeynel 13<br />
Killian, Esna 329<br />
Klimek-Ochab, Magdalena 19, 27<br />
Kniazeva, I. R. 47<br />
Knight, D. Andrew 30<br />
Kobayashi, Junji 24, 85<br />
Koh, Han Joong 17<br />
Koidan, Georgyi N. 120<br />
Kolodiazhna, A. O. 32, 110<br />
Kolodiazhnyi, Oleg I. 32, 63, 71, 89, 110, 285<br />
Kolomeitsev, Alexander A. 28, 31<br />
Kolotylo, M. V. 46<br />
Kononets, L. 290<br />
Konovalov, A. I. 18, 21, 22, 47, 49<br />
Konovalova, I. V. 40, 179<br />
Koppel, Ilmar A. 28<br />
Koppel, Ivar 28<br />
Koroteev, M. P. 273<br />
Körtvélyesi, Tamás 143, 252<br />
Kostyuk, Aleksandr N. 12<br />
Kotorova, Yu. Yu. 40<br />
Kozlov, A. V. 146, 243<br />
Kozlov, V. A. 20, 87<br />
Krakowiak, Agnieszka 186<br />
Krasil’nikova, E. A. 18<br />
Krasnov, S. A. 177, 321<br />
Krasnova, N. S. 35, 364<br />
Krivolapov, D. B. 22, 49, 243<br />
Kubicky, M. 228<br />
Kukhar, V. P. 110, 214, 284, 285, 290<br />
Kulikov, D. V. 146, 166<br />
Kultyshev, Roman 222<br />
Kuriata, Renata 19<br />
Kursheva, L. I. 178
Kütt, Agnes 28<br />
L<br />
Lach, J. 117<br />
Lagrelette, M. 156<br />
Lamarche, François 292, 301<br />
Lammertsma, Koop 272<br />
Larionova, O. А. 88<br />
Latypov, Sh. K. 146, 243<br />
Lauréano, H. 118<br />
Lawson, M. A. 278<br />
Lee, Philip W. 315<br />
Lehn, Pierre 274, 292, 301<br />
Leito, Ivo 28<br />
Lejczak, Barbara 19, 27<br />
Lescop, Christophe 162<br />
Li, Chao 141<br />
Li, Dongpin 103<br />
Li, Gang 232<br />
Li, Heping 344<br />
Li, Rui 209, 350<br />
Li, Tielong 363<br />
Li, Wenfeng 72<br />
Li, Wenpeng 312<br />
Li, Xiaopeng 151<br />
Li, Xinyong 97<br />
Li, Ya 69, 345<br />
Li, Yan 101<br />
Li, Yanjun 358<br />
Li, Yanmei 215, 233, 267<br />
Li, Yanyun 131<br />
Li, Yawei 363<br />
Li, Zhengming 365<br />
Li, Zhengqiu 356<br />
Liang, Hongze 145<br />
Liang, Ying 359<br />
Liao, Xincheng<br />
66, 68, 102, 207, 229, 258,<br />
298, 346, 347, 351, 367<br />
Lin, Jianyun 341<br />
Lin, Kan 123, 253, 368<br />
Lissner, F. 247<br />
Litvinov, I. A. 22, 179, 243<br />
Liu, Aiping 334<br />
Liu, Chengmei 293, 294, 338, 349<br />
Liu, Chenwei 53<br />
Liu, Cunjiang 298<br />
Liu, Feng 300<br />
Liu, Hongxia 221, 300<br />
Liu, Hui 330<br />
385<br />
Liu, Jihong 207<br />
Liu, Jinming 351<br />
Liu, Kai 203<br />
Liu, Lianna 304<br />
Liu, Mian 221, 300<br />
Liu, Peng 227<br />
Liu, Ruoyu 229, 258, 367<br />
Liu, Shenghua 100<br />
Liu, Tanglin 16<br />
Liu, Wei 313<br />
Liu, Xiangqian 204<br />
Liu, Xiaoxia 230, 231<br />
Liu, Xinghai 365<br />
Liu, Yan 225, 230, 231, 369<br />
Liu, Zhenying 363<br />
Liu, Zhongdong 333<br />
Livantsov, M. V. 26<br />
Livantsova, L. I. 26<br />
Lönnecke 36, 146, 174, 243<br />
Lork, Enno 28<br />
Loutsenko, S. 119<br />
Lozinsky, M. O. 76<br />
Lozynsky, M. 290<br />
Lu, Jiansha 202, 207<br />
Lu, Kui<br />
91, 104, 209, 212, 216, 217,<br />
250, 251, 289, 296, 340, 350<br />
Lü, Liang 325<br />
Lü, Mingxiu 212, 217<br />
Lu, Ping 275<br />
Luiz, T. Arun 138<br />
Luo, Shuna 305<br />
Luo, Zhuanxi 348<br />
Luxon, Bruce A. 276<br />
Lyssenkob, K. A. 291<br />
M<br />
Ma, Li<br />
91, 209, 212, 217, 289, 296,<br />
340, 350<br />
Ma, Xinpeng 95, 96<br />
Ma, Yuan 313<br />
Mäemets, Vahur 28<br />
Magdeev, I. M. 61, 321, 352<br />
Makarova, M. V. 291<br />
Makker, Sudesh P. 189<br />
Manoharan, Muthiah 195<br />
Marchenko, Anatoliy P. 120<br />
Marcinowicz, A. 214<br />
Maron, L. 130<br />
Martiyanov, Yevgeniy M. 140<br />
Mastryukova, Tatyana A. 20, 48, 62, 87<br />
Mathey, Francois 1
Matsukawa 58, 241<br />
Matveeva, E. V. 20<br />
Maumela, Chris 329<br />
Mayer, Beatrix 143<br />
McConnell, Ann E. 329<br />
McKenna, Charles E. 70, 90, 222, 259, 261, 278,<br />
302, 303<br />
Meenen, Ellen Van 15<br />
Meng, Xianggao 100<br />
Merkle, R. 173<br />
Metivier, Pascal 133<br />
Metlushka1, Kirill E. 70<br />
Meunier Prest, R. 228<br />
Mével, Mathieu 274, 292, 301<br />
Miao, C. X. 171<br />
Miao, Zhiwei 108, 206, 269, 336<br />
Midollini, Stefano 170<br />
Midoux, Patrick 274<br />
Milaeva, E. R. 26<br />
Miluykov, V. А. 174<br />
Miqueu, K. 130<br />
Mironov, V. F. 40, 88, 179<br />
Mironov, V. F. 21, 22, 49<br />
Mischenko, I. M. 285<br />
Miszuk, Marta 19<br />
Miyake, Hideaki 57, 84<br />
Miyoshi, Katsuhiko 172<br />
Mlynarz, P. 200<br />
Mo, Wenyan 93<br />
Moiseev, Dmitry 327<br />
Momota, Hiro 197<br />
Montier, Tristan 274, 292, 301<br />
Moonen, Kristof 15<br />
Morata, G. 118, 119<br />
Morgan, David H. 329<br />
Morita, Noboru 37, 113<br />
Morozov, V. I. 88<br />
Morse, Herbert C. III 189<br />
Morvan, D. 148<br />
Mostovaya, O. A. 114, 254<br />
Moszner, N. 282<br />
Moulin, D. 156<br />
Mucsi, Zoltán 252<br />
Murakami, Fumiki 37<br />
Murakami, Midori 37<br />
Muravyova, I. 214, 284, 290<br />
Muslinkin, A. A. 61<br />
Mussai, Naama 67<br />
Muzychka, O. 214, 284<br />
Myund, L. A. 244<br />
386<br />
N<br />
Nabiullin, V. N. 61<br />
Nakafuji, Shinya 85<br />
Nakamura, Satoki 43<br />
Nakazawa, Hiroshi 172<br />
Natsagdorj, Amgalan 13<br />
Naumov, R. N. 166, 243<br />
Naumova , A. A. 18<br />
Nawrot, Barbara 199<br />
Nerio, Edward 197<br />
Nesterenko, Valery P. 328<br />
Nesterov, Vitaly V. 32, 71, 89<br />
Nguyen, M. T. 246<br />
Ni, Feng 116, 255<br />
Niecke, Edgar 112, 127<br />
Nieger, M 112, 163, 247<br />
Nifantyev, E. E. 273<br />
Niimi, Taishi 43<br />
Nikitina, Liliya E. 60, 115<br />
Nishide, Katsunori 145<br />
Niu, Mingyu 157<br />
Nixon, John 7<br />
Nixon, Tracy D. 176<br />
Nizamov, Il’nar D. 140, 352<br />
Nizamov, Il’yas S. 60, 115, 140, 352<br />
Nongodlwana, Palesa 329<br />
Novák, Tibor 44, 252<br />
Novikova, O. P. 26<br />
Novikova, Z. S. 99<br />
Nuti, F. 228<br />
Nyulászi, László 249<br />
O<br />
Odinets, I. L. 20, 87, 291<br />
Onys’ko, Petro P. 33, 42, 46<br />
Orlandini, Annabella 170<br />
Oshikawa, Tatsuo 43<br />
Osipov, S. N. 20<br />
Özbolat, A. Helten 163<br />
P<br />
Padda, Ranbir 326<br />
Pan, Canping 316<br />
Papini, A. M. 228<br />
Pedersen, Lars C. 222<br />
Peng, Aiyun 51<br />
Peng, Hao 342<br />
Perez, J. M. 163
Peruzzini, Maurizio 170<br />
Peterson, Larryn W. 303<br />
Petrovskii, Pavel V. 48, 62, 87<br />
Peulecke, N. 117, 372<br />
Pichon, Chantal 274<br />
Pierluigi, Barbaro 170<br />
Pietrusiewicz, K. Michal 25<br />
Pinchuk, Aleksandr M. 12, 120<br />
Pipko, S. E. 83<br />
Pirat, Jean Luc 139, 287<br />
Pirozhenko, V. V. 46<br />
Platova, E. V. 178<br />
Pokross, M. E. 259<br />
Poliakov, D. V. 23<br />
Ponomarenko, Natalia A. 189<br />
Popovich, Yan Ye. 352<br />
Povolotskii, Mark I. 83, 120<br />
Poznanski, J. 214<br />
Pretorius, Mari 329<br />
Prishchenko, A. A. 26<br />
Pudovik, M. A. 6, 18, 47, 75<br />
Punegova, Lyudmila N. 90<br />
Pustovit, Yurii M. 120<br />
Q<br />
Qiang, Liming 347<br />
Qiao, Renzhong 59, 141, 343<br />
Qiu, Jinjun 293, 294, 338, 349<br />
Qu, Guirong 357<br />
Qu, Lingbo<br />
72, 74, 82, 106, 121, 202,<br />
204, 224, 367<br />
R<br />
Rachon, Janusz 38<br />
Rao, M. N. Sudheendra 138<br />
Rassukana, Yu. V. 33, 42, 46, 244<br />
Re, Lige 196<br />
Réau, Régis 162<br />
Rebowska, Beata 199<br />
Reddy, Maddali<br />
Kasthuraiah<br />
43<br />
Reddy, Valluru Krishna 43<br />
Regitz, M 136<br />
Rehmann, Nina 335<br />
Reich, Reuven 67<br />
Rémond, E. 228<br />
Ren, Haiping 289, 340<br />
Ren, Qingyun 81<br />
Ren, Yong 100<br />
387<br />
Reshetnyak, Andrey V. 189<br />
Reznik, V. S. 352<br />
Richard, P. 118, 119, 156<br />
Rodima, Toomas 28<br />
Rogalyov, A. E. 23<br />
Romanova, I. P. 88<br />
Röschenthaler, Gerd<br />
Volker<br />
20, 23, 28, 31<br />
Roze, C. 259, 278<br />
Rudzińska, E. 248<br />
Rusanov, E. B. 83<br />
Russell, R. Graham G. 259, 278, 302<br />
Rybakov, S. M. 114<br />
Rybalkinab, E.Yu. 291<br />
Rydzewska, A. 200<br />
S<br />
Sadkova, Dilyara N. 70<br />
Sadykova, Yu. M. 47<br />
Safin, Damir A. 149<br />
Salt, Michael C. 77<br />
Sasaki, Kohji 37<br />
Sasaki, Mitsuru 319<br />
Sasaki, Shigeru 37, 113<br />
Scheer, Manfred 173<br />
Schindler, József 44<br />
Schoeller, Wolfgang W. 240<br />
Schollhammer, P. 148<br />
Schroeder, G. 200<br />
Segall, Yoffi 39<br />
Sekiguchi, Satoshi 84<br />
Serebryakova, Marina 189<br />
Sergeenko, Gulnur G. 352<br />
Shao, Shuangxi 69, 345<br />
Sharma, Pradeep K. 34<br />
Sharova, E. V. 20<br />
Shatalova, N. I. 18<br />
Sheiko, S. Yu. 285<br />
Shen, Lili 298<br />
Shen, Weiyi 131<br />
Sheng, Xijun 356<br />
Shevchenko, I. V. 23<br />
Shi, Deqing 339, 353<br />
Shi, Kaiqi 69, 345<br />
Shi, Wenping 64, 205<br />
Shi, Xiaona 202<br />
Shih, Alan H. 197<br />
Shipov, A. E. 48<br />
Shivanyukb, A. 284<br />
Shock, David D. 222
Shumbera, Mark 276<br />
Shyshkov, O. A. 31<br />
Sibgatulin, Dmitrii A. 12<br />
Sidorov, Lu. N. 244<br />
Sinitsa, A. A. 33<br />
Sinitsa, Anatoly D. 42, 46, 83<br />
Sinyashin, Oleg<br />
10, 88, 146, 166, 170, 174,<br />
177, 178, 243, 321, 352<br />
Sipos, Melinda 56, 143<br />
Sliwinska, S. 200<br />
Smetannikov, Y. V. 165<br />
Smith, Martin B. 137<br />
Sofronov, Artiem V. 60, 115<br />
Sokolov, Felix D. 142, 149<br />
Song, Baoan 275<br />
Song, Deyu Hu 275<br />
Song, Yingjun 92<br />
Spiridonova, Yu. S. 166<br />
Stankevič, Marek 25<br />
Stawinski, Jacek 201<br />
Stec, Wojciech Jacek 186, 199, 375<br />
Stegbauer, W. David 30<br />
Stevens, Christian V. 15<br />
Streubel, R. 163<br />
Sugiya, Masashi 29<br />
Sun, Manji 224<br />
Sun, Shuting 116<br />
Sun, Yanting 216<br />
Surya Prakash, G. K. 222<br />
Suyama, Takuya 43<br />
Svyashchenko, Yurii V. 12<br />
Szekrényi, Anna 56<br />
Szymelfejnik, Mateusz 38<br />
T<br />
Takács, Daniella 56<br />
Takahashi, Masaki 43<br />
Takano, Keiko 172<br />
Talan, Alexey S. 35, 295<br />
Talarmin, J. 148<br />
Tanchuk, S. V. 284, 285, 290<br />
Tang, Chuchi 95, 96, 98<br />
Tang, Guo<br />
122, 123, 124, 253, 310,<br />
368, 369<br />
Tang, Li'na 91<br />
Tang, Wei 153<br />
Tao, Qin 124<br />
Tarasova, N. P. 164, 165<br />
Tatarinov, D. A. 21<br />
Taylor, Helen V. 77<br />
Tazeev, D. I. 177<br />
388<br />
Terent’eva, S. A. 6, 75<br />
Tian, J. S. 171<br />
Timofeevac, T. V. 291<br />
Timosheva, Natalya V. 159<br />
Tomilov, A. P. 321<br />
Tong, Huaxiang 286<br />
Totsuka, Hirono 43<br />
Tramontano, Alfonso 189<br />
Triffitt, J. T. 278<br />
Tsai, Ming-Daw 260<br />
Tschirschwitz, S. 36<br />
Tsunashim, Katsuhiko 29<br />
Turigin, V. V. 321<br />
U<br />
Ujj, Viktória 44<br />
Upton, Thomas G. 222<br />
V<br />
Varaksina, E. N. 21<br />
Varghese, Babu 138<br />
Vereshchagina, Ya. A. 99, 242<br />
Veszprémi, T. 246<br />
Vilesov, A. S. 165<br />
Virieux, David 139, 287<br />
Volle, Jean Noël 287<br />
Volochnyuk, Dmitrii M. 12<br />
Vorob’eva, D. V. 20<br />
Voronkov, M. G. 242<br />
Vovk, A. I. 214, 284, 285, 290<br />
W<br />
Wada, Takeshi 263<br />
Wagner, Carston R. 183<br />
Waltho, Jonathan P. 237<br />
Wang, Bin 336<br />
Wang, Bo 51<br />
Wang, Chungui 95, 96, 98<br />
Wang, Dongchao 357<br />
Wang, Fang 151<br />
Wang, Haiyan 341<br />
Wang, Hui 59<br />
Wang, J. Q. 171<br />
Wang, Jianing 225<br />
Wang, Jie 336<br />
Wang, Jinquan 73<br />
Wang, Junli 180
Wang, Meimei 354<br />
Wang, Suhua 365<br />
Wang, T. 273<br />
Wang, Tao 86, 348<br />
Wang, Tingting 92<br />
Wang, Tongjian 253, 310<br />
Wang, Wenhu 92<br />
Wang, Xiaohui 297<br />
Wang, Xiuqiang 357<br />
Wang, Yazhou 359<br />
Wang, Yue 309, 311<br />
Wang, Yulin 325<br />
Wang, Z. 219<br />
Wärme, Rikard 169<br />
Wawrzyniak, W. 372<br />
Webster, Charles E. 239<br />
Wen, Tingbin 135<br />
Werner, M. A. 136<br />
Widera, Kinga 199<br />
Wieczorek, Michał 186<br />
Wiemer, Andrew J. 286<br />
Wiemer, David F. 208, 286, 376<br />
Willemse, Alex 329<br />
Williams, D. Bradley G. 144<br />
Williams, Gareth 299<br />
Wilson, Samuel H. 222<br />
Witt, Dariusz 38<br />
Wojcik, Marzena 199<br />
Wu, Guoqiang 325<br />
Wu, Huaping 334<br />
Wu, Nana 354<br />
Wu, Xianli 68, 102<br />
Wu, Xiuling 354<br />
X<br />
Xia, Aibing 50<br />
Xia, Ran 357<br />
Xia, Z. 259, 278<br />
Xia, Zhidao 302<br />
Xiao, Qiang 223<br />
Xiao, Weihong 223<br />
Xiao, Wenjing 97, 103, 330<br />
Xie, Hongxue 354<br />
Xie, Jianhua IV, 55<br />
Xie, Yali 102, 351<br />
Xie, Zhenhua 300, 311, 312<br />
Xu, Jun 64, 205<br />
Xu, Pengxiang 227, 369<br />
Xu, Ruidong 180<br />
389<br />
Xu, Shengzhen 283<br />
Xu, Xinyuan 95, 96, 98<br />
Xu, Xuemei 151<br />
Xue, Wei 275<br />
Y<br />
Yakhvarov, Dmitry 170<br />
Yamamichi, Hideaki 58, 241<br />
Yamamoto, Yohsuke 58, 241<br />
Yamashita, Mitsuji 43<br />
Yang, Junliang 346<br />
Yang, Song 275<br />
Yang, Xianbin 276<br />
Yang, Xun 51<br />
Yang, Yan 333<br />
Yao, Yingyan VII, 104<br />
Yaouanc, Jean Jacques 148, 274, 292, 301<br />
Yarmieva, Liliya N. 90<br />
Yarullin, R. S. 352<br />
Ye, Qiaoyun 69<br />
Ye, Yong 66, 229, 258, 298, 346, 367<br />
Yin, Zhengming 66<br />
Yorke, Jake 50<br />
Yoshifuji, Masaaki 37, 84, 113, 145, 161<br />
Yu, Eric 327<br />
Yu, Gang 43<br />
Yu, Guang'ao 100<br />
Yu, José S. 208<br />
Yu, Yaqin 16<br />
Yu, Zhenrong 181<br />
Yuan, Chengye 262<br />
Yuan, Jinwei 72, 106, 202<br />
Yusupova, G. G. 88<br />
Z<br />
Zabirov, Nail G. 142, 149<br />
Zade, Sanjio S. 39<br />
Zanobini, Fabrizio 170<br />
Zeng, Zhiping 255, 257<br />
Zeuner, F. 282<br />
Zhang, Baojun 121<br />
Zhang, Bo 52<br />
Zhang, Hongbo 343<br />
Zhang, Hongyu 204<br />
Zhang, Hui 131<br />
Zhang, Jianchen 64, 205, 347<br />
Zhang, Jianfeng 108, 206, 269<br />
Zhang, Lihe 184
Zhang, Linglin 211<br />
Zhang, Liping 74<br />
Zhang, Liuji 121<br />
Zhang, Nan 307, 309, 311, 312<br />
Zhang, Peizhuo 307, 309<br />
Zhang, Peng 300<br />
Zhang, Shufeng 218<br />
Zhang, Sixing 68<br />
Zhang, Ting 224<br />
Zhang, Xueqing 131<br />
Zhang, Xumu 128<br />
Zhang, Yu 362<br />
Zhang, Yujin 288<br />
Zhang, Yuping 275<br />
Zhang, Zhaoying 266<br />
Zhang, Zhiguang 357<br />
Zhao, Canfang 221<br />
Zhao, Dongxin 250, 251<br />
Zhao, Guofeng 95, 96<br />
Zhao, Jianwei 266<br />
Zhao, Junfeng 68<br />
Zhao, Wenjie 250, 251, 296<br />
Zhao, Yufen<br />
68,91, 116, 122, 123, 124,<br />
157, 171, 215, 227, 230,<br />
231, 253, 255, 257, 267,<br />
289, 304, 305, 308, 309,<br />
310, 343, 368, 369<br />
390<br />
Zheltukhin, Viktor F. 70<br />
Zhen, Xi 193<br />
Zheng, Jinyun 218<br />
Zhong, Shangbin 346<br />
Zhou, Fufang 362<br />
Zhou, Libin 181<br />
Zhou, Qilin 55, 125, 150, 152<br />
Zhou, Xiang 196<br />
Zhou, Zhaoliang 325<br />
Zhou, Zhenghong 95, 96, 98<br />
Zhu, Bo 348<br />
Zhu, Jiaqi 334<br />
Zhu, Shoufei IV, 55, 150, 152<br />
Zhuo, Renxi 187<br />
Zielenkiewicz, W. 214<br />
Ziganshin, Rustam 189<br />
Zon, Gerald 192<br />
Zou, Ruyi 66, 207, 298, 346<br />
Zuo, Na 213<br />
Zweni, Pumza 329<br />
Żymańczyk-Duda, Ewa 19, 27