Alkaloids from the stems of Coscinium fenestratum Colebr

Abstract

The stems of Coscinium fenestratum Colebr. were examined for their alkaloids. Altogether four alkaloids were isolated, three of which being protoberberine alkaloids identified as berberine, jatrorrhizine and tetrahydropalmatine, the other one being aporphine alkaloids identified as crebanine. Tetrahydropalmatine and crebanine have never been reported from this species. The physical and chemical properties of these alkaloids were studied.