Phenolic dimers and an indole alkaloid from Campylospermum flavum (Ochnaceae)

Three compounds, 4'''-O-methylagathisflavone (1a), flavumchalcone (2), and flavumindole (3a) have been isolated from the leaves and stem bark of Campylospermum flavum (Ochnaceae) together with 10 known compounds. The structures of these compounds, that have shown a significant cytotoxicity towards Artemia salina larvae, and their relative configurations were established by 1D and 2D NMR experiments.