Alkaloid constituents from Viola tianschanica.

Abstract

Eighteen previously undescribed alkaloids, tishaviolamines A-J, including eight pairs of enantiomers, together with two known benzylisoquinoline alkaloids, (-)-bicuculline and (-)-corlumine, were isolated from Viola tianschanica. Among them, tishaviolamine A-E were demonstrated to possess three types of unpresented skeletons. The structures of these… (More)
DOI: 10.1016/j.phytochem.2017.09.011

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