Studies on the Alkaloids of Formosan Lauraceous Plants. XV. Alkaloids of Lindera oldhamii HEMSL. (1)

Eight alkaloids have been isolated from the trunk and leaves of Lindera oldhamii HEMSL., and three of these have been identified with d-dicentrine (I), N-methylnandigerine (N-methylhernangerine) (V), and N-methylovigerine (N-methylhernovine) (VII). A new alkaloid, O-methylbulbocapnine, C20H21O4N, mp 129-130°C, [α]31D+248°C (CHCl3), has been proved to have the structure VI ; and the occurrence of an oxoaporphine base, dicentrinone (II), has been evidenced.