Plant anticancer agents. XIX Constituents of Aquilaria malaccensis

The stem bark of the Thai tree Aquilaria malaccensis (Thymelaeaceae) has afforded 1,3-dibehenyl-2-ferulyl glyceride (3), which is novel, and 12-O-n-deca- 2, 4, 6-trienoylphorbol-13-acetate (4). The structures of these cytotoxic compounds were elucidated by their spectral and chemical parameters.