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Four New C21 Steroidal Glycosides from the Roots of Cynanchum auriculatum

✍ Scribed by Xiao-Jie Gu; Nan Yao; Shi-Hui Qian; You-Bin Li; Ping Li

Publisher
John Wiley and Sons
Year
2009
Tongue
German
Weight
212 KB
Volume
92
Category
Article
ISSN
0018-019X

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✦ Synopsis

Abstract

magnified image

Four new C~21~ steroidal glycosides with an acyl group at C(12) and a straight sugar chain at C(3), namely auriculosides I–IV (1–4, resp.), along with seven known steroidal derivatives, were isolated from the roots of Cynanchum auriculatum Royle ex Wight. Their structures were established on the basis of spectroscopic evidences and chemical methods. The known constituents were identified as wilfoside C~1~N (5), wilfoside C~3~N (6), caudatin (7), cynanauriculoside I (8), cynanauriculoside II (9), wilfoside K~1~N (10), and kidjoranin (11).

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