Studies on the constituents of the seeds of Cassia obtusifolia LINN. The structures of two new anthraquinone glycosides.

Abstract

Two new anthraquinones, alaternin 1-O-β-D-glucopyranoside and chryso-obtusin 2-O-β-D-glucopyranoside, were isolated, along with physcion 8-O-β-D-glucopyranoside, from the seeds of Cassia obtusifolia LINN., and their structures were established on the basis of spectral and chemical evidence.