Studies on the Alkaloids of Menispermaceous Plants. CXXIV. Alkaloids of Menispermum dauricum DC. (Suppl.1)

Abstract

The tertiary base, dauricine, of Menispermum dauricum DC. had already been studied in detail and its chemical structure established, but the investigation of the quaternary bases present had been left undone. In this paper, the isolation of two quaternary bases from the same plant is presented. One of these bases, which occurs in comparatively larger amounts, was named menisperine. It was found that menisperine iodide is identical with d-isocorydine methiodide. For the representation of menisperine formula (V) of the aporphine type may be considered as appropriate.