Opium alkaloids XV: isolation of stepholidine.
A protoberberine alkaloid was isolated from opium and characterized as (-) 2, 10-dihydroxy-3,9-dimethoxytetrahydroprotoberberine by spectroscopic methods and by comparison with (-) stepholidine.
D001599:Berberine / Q000031:analogs & derivatives; D001600:Berberine Alkaloids / Q000032:analysis*; D002855:Chromatography, Thin Layer; D013058:Mass Spectrometry
D001600:Berberine Alkaloids; D001599:Berberine; C010513:stepholidine