ELectron-impact studies in medicine and biochemistry—II: The mass spectra of the alkaloids fromCissampelos ovalifolia D.C.

Abstract

The mass spectra of some new alkaloids extracted from Cissampelos ovalifolia are discussed. The compounds are shown to be tertiary bis-benzyl isoquinoline bases of an unusual type possessing a p-xylyl moiety. Some information about the relative positions of hydroxyl and methoxyl substituents in the macrocyclic ring system is also obtained.