HIGHLY OXYGENATED QUASSINOIDS FROM EURYCOMA-LONGIFOLIA

Authors
MORITA H KISHI E TAKEYA K ITOKAWA H IITAKA Y
Citation
H. Morita et al., HIGHLY OXYGENATED QUASSINOIDS FROM EURYCOMA-LONGIFOLIA, Phytochemistry, 33(3), 1993, pp. 691-696
Citations number
13
Categorie Soggetti
Plant Sciences
Journal title
Phytochemistry → ACNP
ISSN journal
00319422
Volume
33
Issue
3
Year of publication
1993
Pages
691 - 696
Database
ISI
SICI code
0031-9422(1993)33:3<691:HOQFE>2.0.ZU;2-F
Abstract
Two novel C19-skeleton quassinoids, one with a lactonic linkage at C-7 and another with a lactonic linkage at C-12, and seven novel highly o xygenated quassinoids with a C20-skeleton were isolated from the leave s of Eurycoma longifolia. Their structures and stereochemistry were es tablished by spectroscopic data, including two-dimensional NMR techniq ues, and X-ray analysis. The relationships between their structures an d cytotoxicities are also discussed.