Oleanene-sapogenols from puerariae radix.

Abstract
Seven oleanene-sapogenols (1-7) were obtained from the methanolysate of the crude saponin in Puerariae Radix. Four of them, sapogenols 1-4, were identical with sophoradiol, cantoniensistriol, and soyasapogenols B and A. The structures of three new sapogenols (5-7), named kudzusapogenols C, A and B methyl ester, were deduced by spectroscopic means.

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