Studies on the Alkaloids from Picrasma quassioides BENNET. VI. Structures of Picrasidines N, O, and Q

Abstract

Three new alkaloids, picrasidines N (I), O (II), and Q (III), have been isolated from the root wood of Picrasma quassioides BENNET (Simaroubaceae). The structures were determined on the basis of spectral analysis and chemical evidence.