C₂₁ steroidal glycosides of seven sugar residues from Cynanchum otophyllum

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• 作者：Yi-Bin Zhao ; Hong-Ping He ; Chun-Hua Lu ; Quan-Zhang Mu ; Yue-Mao Shen and Xiao-Jiang Hao
• 刊名：Steroids
• 出版年：2006
• 出版时间：November 2006
• 年：2006
• 卷：71
• 期：11-12
• 页码：935-941
• 全文大小：282 K

文摘

Two new C₂₁-steroidal glycosides having hepta-saccharide residue were isolated from the rhizome of Cynanchum otophyllum Schneid. Their structures were determined to be 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) by spectral methods, respectively.