Abstract: | From the stem bark of Aspidosperma discolor A. DC. (–)-reserpiline, (–)-isoreserpiline, (+)-yohimbine, (–)-10-methoxy-geissoschizol and (–)-10-methoxy-dihydrocorynantheol (major alkaloids) and (–)-isoreserpiline-ψ-indoxyl, AD-V (–)-β-yohimbine, (+)-haplocidine, (+)-desmethylaspidospermine and (–)-demethoxy-aspidospermine (minor alkaloids) have been isolated. |