The alkaloids of Senecio jacobaea L: The structures of the Alkaloids and the Necic Acids

Abstract

Based on a reinterpretation of previously recorded data together with some new evidence, structures VII, IX, XIX, X, and XI have been derived for jacobine, jaconine, jacoline, jaconecic acid, and isojaconecic acid, respectively. The structures of some degradation products of the alkaloids have been clarified.