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- W2384359352 abstract "Objective:To investigate the structures of compounds in Qingyangshen tablets.Methods:The acetic ether extracts from the rhizome of Cynanchum otophyllum Schneid(Asclepiadaceae) was isolated by column chromatography,and the structures of the purified compounds were determined by spectral method.Results:Two new C21-steroidal glycosides were isolated whose structures were determined as caudatin 3-O-α-L-cymaropyranosyl-(1→4)-α-D-oleandropyranosyl-(1→4)-α-L-cymaropyranosyl-(1→4)-β-D-glucopyranosyl-(1→4)-α-D-oleandropyranosyl-(1→4)-β-D-oleandropyranosyl-(1→4)——β-D-diginopyranoside(1),and caudatin 3-O-β-D-cymaropyranosyl-(1→4)-α-D-oleandropyranosyl-(1→4)-α-L-cymaropyranosyl-(1→4)-β-D-glucopyranosyl-(1→4)-β-D-oleandropyranosyl-(1→4)-β-D-cymaropyranosyl-(1→4)-β-D-diginopyranoside(2),respectively.Conclusion:C21 steroidal glycosides 1 and 2 in Qingyangshen tablets are composed of a C21 steroidal aglycone moiety of the 3-OH substitution and a sugar chain.This chain consists of seven sugar residues which are 2-deoxy-hexose and glucose.All linkages between them are 1→4." @default.
- W2384359352 created "2016-06-24" @default.
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- W2384359352 date "2008-01-01" @default.
- W2384359352 modified "2023-09-24" @default.
- W2384359352 title "C21 steroidal glycosides with seven sugar residues extracted from Cynanchum otophyllum Schneid" @default.
- W2384359352 hasPublicationYear "2008" @default.
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