[Alkaloids from Dactylicapnos scandens Hutch].

ABSTRACT

OBJECTIVE: To investigate the alkaloids in the roots of Dactylicapnos scanden (D. Don) Hutch. METHOD: The compounds were isolated by various column chromatographic methods. The structures were elucidated by spectroscopic analysis. RESULT: Eight compounds were isolated and identified as d-isocorydine (1), protopine (2), d-magnoflorine (3), d-isocorydine-beta-N-oxide (4), d-corydine-alpha-N-oxide (5), d-corydine-beta-N-oxide (6), 6S, 6aS-N-methyllaurotetanine-alpha-N-oxide (7), and 6R, 6aS-N-methyllaurotetanine-beta-N-oxide (8). CONCLUSION: Compounds 4-8 were isolated from this species and the genus Dactylicapnos for the first time.