Alkaloids of Choisya ternata H.B. & K. (family Rutaceae). The structure of choisyine

Abstract

Choisyine, an alkaloid of Choisya ternata H.B. & K., has been shown to be (V). The dehydration product, anhydrochoisyine, which was regarded as identical with the alkaloid acronidine by Frolova and Kuzovkov, has been shown to be (VII).