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Four new oleanene sapogenols having 22-oxo group were obtained from the methanolysate of the crude glycosidic fraction in Sophorae Subprostratae Radix, the root of Sophora subprostrate CHUN et T. CHEN. Also, twelve known sapogenols were isolated from the same methanylsate.
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Takeshita et al. (1991) studied this question.
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