Strychnos 1990 - 2004 - Crops for the Future

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Author Title Year Source title Reference Massiot, G., P. Thepenier, M. J. Jacquier, J. Henin, L. Lemenolivier and C. Delau Alkaloids from Dtrychnos henningsii 1991 Phytochemistry 30(10): 3449-3456 Abstract Seventeen alkaloids have been isolated from the leaves, stem and root barks of Strychnos henningsii collected in Tanzania. They are holstiine, splendoline, 23-hydroxyspermostrychnine, 19-epi-23- hydroxyspermostrychnine, retuline, henningsiine, deshydroxyacetylhenningsiine, O- acetylhenningsiine, 3-hydroxyhenningsiine, henningsiine-N(4)-oxide, 23-hydroxyspermostrychnine- N(4)-oxide, 17,23-dihydroxyspermostrychnine, spermostrychnine, henningsamide, O- acetylhenningsamide, deshydroxyacetylhenningsamide and cyclostrychnine. Among these, the henningsiine and henningsamide derivatives are new alkaloids which possess a (16,17) double bond. Cyclostrychnine is a novel heptacyclic C21 alkaloid which presents some similarities with strychnine and has a C-16 to C-23 bond. Structures were established by spectral means and c h e m i c a l c o r r e l a t i o n s . Author Title Year Source title Reference Mitsunaga, K., K. Koike, H. Fukuda, K. Ishii and T. Ohmoto Ligustrinoside, a new bisiridoid glucoside from Dtrychnos ligustrina 1991 Chemical and Pharmaceutical Bulletin 39(10): 2737-2738 Abstract A new bisiridoid glucoside, ligustrinoside (1), along with three known iridoids, loganin, loganetin and loganic acid was isolated from the wood of Strychnos ligustrina BL. (Loganiaceae), collected in Indonesia. The structure of ligustrinoside (1) has been determined as an ester dimmer of loganin and l o g a n i c a c i d b e t w e e n C - 7 a n d C - 1 1 .
Author Title Year Source title Reference Mukherjee, R., B. A. Dasilva, B. C. Das, P. A. Keifer and J. N. Shoolery Structure and stereochemistry of divaricine, a new bisindole alkaloid from Strych 1991 Heterocycles 32(5): 985-990 Abstract The complete stereostructure of divaricine, a new bisindole alkaloid from Srychnos divaricans Ducke., has been determined mainly by the use of one- and two-dimensional nmr techniques. Author Title Year Source title Reference Nkiliza J; Vercauteren J; Leger JM 19-hydroxytubotaiwine - total synthesis - assignment of absolute-configuration to 1991 Tetrahedron Letters 32(15): 1787-1790 Abstract A total synthesis of two isomers of racemic 19-hydroxytubotaiwine from tryptamine is described1. The absolute configuration of one of the two natural ones is defined by a NMR and X-ray study of a n i n t e r m e d i a t e . Author Title Year Source title Reference Quetinleclercq J; Angenot L; Dupont L; Dideberg O; Warin R; Delaude C; Coune Revision of the structure of strychnochromine 1991 Tetrahedron Letters 32(34): 4295-4298 Abstract The structure of strychnochromine, an unusual alkaloid isolated from the root bark of Strychnos gossweileri, has been revised. Strychnochromine 2 possesses a new pentacyclic skeleton with a tetrahydroquinoline rather than indole or indoline moiety.
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