Minor N-b,C(21)-secocuran alkaloids of Strychnos myrtoides

Authors
Martin, MT Rasoanaivo, P Palazzino, G Galeffi, C Nicoletti, M Trigalo, F Frappier, F
Citation
Mt. Martin et al., Minor N-b,C(21)-secocuran alkaloids of Strychnos myrtoides, PHYTOCHEM, 51(3), 1999, pp. 479-486
Citations number
8
Categorie Soggetti
Agricultural Chemistry","Animal & Plant Sciences
Journal title
PHYTOCHEMISTRY
ISSN journal
00319422 → ACNP
Volume
51
Issue
3
Year of publication
1999
Pages
479 - 486
Database
ISI
SICI code
0031-9422(199906)51:3<479:MNAOSM>2.0.ZU;2-P
Abstract
From the stem bark of Strychnos myrtoides in addition to strychnobrasiline and malagashanine, four minor alkaloids, viz. malagashanol, 12-hydroxy-19-e pi-malagashanine, myrtoidine and 11-demethoxymyrtoidine were isolated and t heir structures were established by 2-D NMR techniques. They belong to the series N-b,C(21)-secocuran and the two last show an additional alpha-beta u nsaturated gamma-lactonic ring among C(18)-C(21). The biogenesis of these a lkaloids is also discussed. (C) 1999 Elsevier Science Ltd. All rights reser ved.