Con?gurational analysis of cubebins and bicubebin from Aristolochia lagesiana and Aristolochia pubescens

Author(s): Pascol ID, Nascimento I, Lopes L

Abstract

(8S,8'R,9S)-, (8R,8'R,9R)-, and (8R,8'R,9S)-cubebins, together with (8R,8'R,8''R,8'''R,9R,9''S)-bicubebin, were isolated from Aristolochia lagesiana and Aristolochia pubescens. Their structures were determined by spectroscopic methods, including 1H and 13C NMR spectroscopy at low temperatures, and by chemical transformations.

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