Studies on the constituents of Picrasma quassioides BENNET. II. On the alkaloidal constituents.

Chemical and Pharmaceutical Bulletin
1983.0

Abstract

Two new alkaloids, 4,9-dimethoxy-1-vinyl- β-carboline (XI) and β-carbolin-1-yl 3-(4.8dimethoxy- β-carbolin-1-yl)-1-methoxypropyl ketone (XII) were isolated from the wood of Picrasma quassioides BENNET (Simaroubaceae) together with known alkaloids, 1-ethyl-4methoxy-B-carboline (VI), 4-methoxy-1-vinyl-B-carboline (VII), 4,8-dimethoxy-1-vinyl- β-carboline (VIII), canthin-6-one (IX), and 5-methoxycanthin-6-one (X). The structures of these alkaloids were elucidated on the basis of spectroscopic evidence.

DOI： 10.1248/CPB.31.3198

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