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  • Title: Two new C21 steroidal glycosides from Cynanchum wallichii Wight.
    Author: Chen G, Wang D, Pei YH.
    Journal: J Asian Nat Prod Res; 2008; 10(7-8):679-84. PubMed ID: 18636381.
    Abstract:
    Two new C21 steroidal glycosides, characterized with caudatin as the aglycone moiety and 2,6-dideoxy-pyranoses as component sugars, have been isolated from the roots of Cynanchum wallichii Wight. Their structures were elucidated as caudatin-3-O-beta-D-cymaropyranosyl-(1 --> 4)-beta-d-digitoxopyranoside (1) and caudatin-3-O-beta-D-oleandropyranosyl-(1 --> 4)-beta-D-cymaropyranoside (2) by spectroscopic evidence.
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