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Note | Regular issue | Vol 75, No. 9, 2008, pp.2283-2288
Published online, 21st April, 2008
DOI: 10.3987/COM-08-11381
Flavisiamines A-D, New Indole Alkaloids from Kopsia flavida

Mitsuhiro Sekiguchi, Yusuke Hirasawa, Kazumasa Zaima, Teh Chin Hoe, Kit-Lam Chan, and Hiroshi Morita*

*Faculty of Pharmaceutical Sciences, Hoshi University, Shinagawa-ku, Tokyo 142-8501, Japan

Abstract

Four new methyl chanofruticosinate-type alkaloids, flavisiamines A (1) ~ D (4) have been isolated from Kopsia flavida (Apocynaceae) and their structures were elucidated by NMR spectral analysis using 2D techniques.