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  • Title: New pregnane glycosides from Cynanchum ascyrifolium.
    Author: Yeo H, Choi YH, Kim J.
    Journal: Chem Pharm Bull (Tokyo); 2002 Jun; 50(6):847-9. PubMed ID: 12045346.
    Abstract:
    Two new pregnane glycosides, cynascyrosides D and E, were isolated from the roots of Cynanchum ascyrifolium. The structures of these compounds were determined on the basis of spectroscopic and chemical evidence as cynajapogenin A 3-O-alpha-L-cymaropyranosyl-(1-->4)-beta-D-digitoxopyranosyl-(1-->4)-beta-L-cymaropyranoside and cynajapogenin A 3-O-beta-D-glucopyranosyl-(1-->4)-alpha-L-diginopyranosyl-(1-->4)-beta-L-cymaropyranosyl-(1-->4)-beta-D-digitoxopyranoside.
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