Acylsteryl glycosides and other constituents from Campylospermum densiflorum (Ochnaceae)

A mixture of two new acylsteryl glycosides named densifloside A and B was isolated from the leaves of Campylospermum densiflorum, together with serotobenine, decursivine, N-feruloyltriptamine , ent-16 ,17-dihydroxykauran-19-oic acid, menisdaurin, and secoisolariciresinol. The structure elucidations were based on spectroscopic evidence. The biological assay of crude extract of this plant showed good antimicrobial activity against Gram-positive cocci, weak activity against Gram-negative bacilli, and displayed moderate activity against two strains of fungi (C. albicans and C. neoformans) among several strains.