Flavonoid glycosides and other constituents of Psorospermum androsaemifolium BAKER(clusiaceae)

摘要

Two new flavonoid glycosides, namely 3'-(2 '',4 ''-dihydroxybenzyloxy)acanthophorin B (1b) and beta,2,3',4,4',6-hexahydroxy-alpha-(alpha-L-rhamnopyranosyl)dihydrochal cone (2) were isolated from the leaves of Psorospermum androsaemifolium ogether with quercetin (1), acanthophorin B (1a), alpha-(3) and beta-amyrine (3a), vismiaquinone (4), 12-hentriacontanol and hentriacontane. The structures of these secondary metabolites were established using detailed spectroscopic analysis and by comparison with published data. Compounds 1, 1 a, 11), 2, 3. 3a and 4 showed weak antifungal and antibacterial activities.