A new oleanane glycoside from the roots of Astragalus caprinus

✍ Scribed by Anne-Claire Mitaine-Offer; Tomofumi Miyamoto; Nabil Semmar; Maurice Jay; Marie-Aleth Lacaille-Dubois

• Publisher: John Wiley and Sons
• Year: 2006
• Tongue: English
• Weight: 95 KB
• Volume: 44
• Category: Article
• ISSN: 0749-1581
• DOI: 10.1002/mrc.1809

✦ Synopsis

Abstract

A novel oleanane‐type triterpene saponin (1) together with two known molecules, soyasapogenol B and astragaloside VIII were isolated from the roots of Astragalus caprinus. Their structural elucidation was performed mainly by 2D NMR techniques (COSY, TOCSY, NOESY, HSQC, HMBC) and mass spectrometry. Compound 1 was determined as 3‐O‐[α‐L‐rhamnopyranosyl‐(1 → 2)‐β‐D‐glucuronopyranosyl]‐22‐O‐β‐D‐apiofuranosyl‐soyasapogenol B. Copyright © 2006 John Wiley & Sons, Ltd.