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  • Title: Two new steroidal glycosides from Cynanchum amplexicaule.
    Author: Chen G, Yi S, Hua HM, Lu X, Pei YH.
    Journal: J Asian Nat Prod Res; 2012; 14(6):559-63. PubMed ID: 22587797.
    Abstract:
    Two new C₂₁ steroidal glycosides were isolated from the EtOAc fraction of Cynanchum amplexicaule. Their structures were elucidated as amplexicogenin D-3-O-β-D-cymaropyranoside and stauntogenin -3-O-α-L-oleandropyranosyl-(1 → 4)-O-β-D-digitoxopyranosyl-(1 → 4)-O-β-D-oleandropyranoside by spectroscopic analysis including 1D and 2D NMR experiments.
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