Chemical constituents in the introduced Coleus forskohlii

OBJECTIVE To study the chemical constituents in the introduced Coleus forskohlii. METHOD The chemical constituents were isolated by column chromato-graphy. The structures were elucidated on the basis of IR, MS, 1H-NMR and 13C-NMR experiments. RESULT Eight compounds were obtained, the structures of which were identified as cytochalasin B (1), N-benzoyl-L-phenylalaninol (2), 3,6-dibenzyl-2,5-dioxopiperazine (3), 2-furoic acid (4), vanillic acid (5), loliolide (6) and forskolin D (7). CONCLUSION Compounds 1-6 were isolated from the genus Coleus for the first time.