Strychnos 1990 - 2004 - Crops for the Future

Author
Title
Year
Source title
Reference
Fletcher, R., M. Kizil, C. Lampard, J. A. Murphy and S. J. Roome
Tetrathiafulvalene-mediated stereoselective synthesis of the tetracyclic core of asp
1998
Journal of the Chemical Society-Perkin Transactions 1
(15): 2341-2351
Abstract
A novel route to advanced synthetic precursors of Aspidosperma alkaloids is described, utilising
r a d i c a l - p o l a r c r o s s o v e r r e a c t i o n s .
Author
Title
Year
Source title
Reference
Frederich, M., J. Quetin-Leclercq, R. G. Biala, V. Brandt, J. Penelle, M. Tits and
3 ',4 ',5 ',6 ' tetradehydrolongicaudatine y, an anhydronium base from Strychnos us
1998
Phytochemistry
48(7): 1263-1266
Abstract
A new bisindole alkaloid, tetradehydrolongicaudatine Y, has been isolated from the stem bark of
Strychnos usambarensis collected from the Ivory Coast. Elucidation of its structure is based mainly
on spectroscopic studies and places it among the relatively small collection of zwitterionic
indoloquinolizine alkaloids. (C) 1998 Elsevier Science Ltd. Al rights reserved.
Author
Title
Year
Source title
Reference
Frederich, M., M. Tits and L. Angenot
Qualitative and quantitative evaluation of bisindole usambarane alkaloids in Stryc
1998
Phytochemical Analysis
9(2): 63-66
Abstract
A high performance liquid chromatographic method for the simultaneous determination of bisindole
usambarane alkaloids from the roots of Strychnos usambarensis using a diode-array detector is
proposed, The system, consisting of a RP-8 Select B column and a linear gradient elution with
acetonitrile and acetate buffer allowed the separation of all the alkaloids in 20 min, Usambarensine
was found to be the major tertiary alkaloid present in the roots, In order to demonstrate the
possibility of quantifying the bisindole alkaloids in crude roots extracts, the quantitative evaluation
of 3',4'-dihydrousambarensine, usambarensine and N-b-methylusambarensine was carried out. (C)
1 9 9 8 J o h n W i l e y & S o n s , L t d .