Abstract

The branches and leaves of Calophyllum saigonense Pierre yielded stigmasterol, 3,4-dihydroxy-2-methoxybenzoic acid, 3,4-dihydroxybenzoic acid and amentoflavon. The structures of the compounds were determined using NMR techniques (1H and 13C NMR, DEPT 90 and 135), UV, IR and LC-MS spectroscopy. Amentoflavon exhibits anti-virus properties while 3,4-dihydroxybenzoic acid is an antioxidant and free radical scavenger. The latter also inhibits development of neoplasm in animal models and platelet aggregation.