Citation: Hong Li Teng, Yu Lu, Jun Li, Guang Zhong Yang, Zhi Nan Mei. Two new steroidal glycosides from the root of Cynanchum auriculatum[J]. Chinese Chemical Letters, ;2011, 22(1): 77-80. doi: 10.1016/j.cclet.2010.09.009 shu

Two new steroidal glycosides from the root of Cynanchum auriculatum

a Guangxi Institute of Minority Medicine, Nanning 530001, China;
b College of Pharmacy, South Central University for Nationalities, Wuhan 430074, China

Received Date: 5 May 2010

Fund Project: We gratefully acknowledge financial support of this work by the National Key Technology R&D Program in the 11th Five Year Plan of China (No.2007BAI48B08).

Two new steroidal glycosides named eyanoauriculoside A(1)and B(2), have been isolated from the roots of Cynanchum auriculatum Royle ex Wight.The structure of cyanoauriculoside A(1)was determined to be 20-O-acetyl-penupogenin-3-O-β-Dglucopyranosyl-(1→4)-β-D-glucopyranosyl-(1→4)-α-L-cymaropyranosyl-(1→4)-β-D-cymaropyranosyl-(1→4)-α-L-diginopyranosyl-(1→4)-β-D-cymaropyranoside.Cyanoauriculoside B(2)was characterized as 20-O-acetylpenupogenin-3-O-β-D-glucopyranosyl-(1→4)-α-L-cymaropyranosyl-(1→4)-β-D-cymaropyranosyl-(1→4)-α-L-diginopyranosyl-(1→4)-β-D-cymaropyranoside.The structures of these compounds were elucidated based on the chemical and spectroscopic evidence.
- Cynanchum auriculatum,
- Steroidal glycoside,
- Cyanoanriculosides A and B
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