Five new bidesmoside triterpenoid saponins from Stauntonia chinensis

✍ Scribed by Gao Hao; Wang Zhao; Yang Lei; Yu Yang; Yao Zhi-Hong; Wang Nai-Li; Zhou Guang-Xiong; Ye Wen-Cai; Yao Xin-Sheng

• Publisher: John Wiley and Sons
• Year: 2008
• Tongue: English
• Weight: 178 KB
• Volume: 46
• Category: Article
• ISSN: 0749-1581
• DOI: 10.1002/mrc.2222

✦ Synopsis

Abstract

Eleven triterpenoid saponins (1–11) were isolated from Stauntonia chinensis DC. (Lardizabalaceae), including five new compounds, yemuoside YM~21–25~ (1–3, 6, 7) structures of which were elucidated by chemical methods and a combination of MS, 1D‐ and 2D‐ NMR experiments including DEPT, ^1^H^1^H COSY, HSQC, HMBC, TOCSY, and NOESY as 3‐O‐α‐L‐arabinopyranosyl‐(1 → 3)‐[α‐L‐rhamnopyranosyl‐(1 → 2)‐]α‐L‐arabinopyranosyl‐akebonicacid‐28‐O‐α‐L‐rhamnopyranosyl‐(1 → 4)‐β‐D‐glucopyranosyl‐(1 → 6)‐β‐D‐glucopyranosyl ester (1), 3‐O‐β‐D‐xylopyranosyl‐(1 → 3)‐α‐L‐rhamnopyranosyl‐(1 → 2)‐α‐L‐arabinopyranosyl‐akebonic acid‐28‐O‐α‐L‐rhamnopyranosyl‐(1 → 4)‐β‐D‐glucopyranosyl‐(1 → 6)‐β‐D‐glucopyranosyl ester (2), 3‐O‐β‐D‐glucopyranosyl‐(1 → 3)‐α‐L‐arabinopyranosyl‐akebonic acid‐28‐O‐α‐L‐rhamnopyranosyl‐(1 → 4)‐β‐D‐glucopyranosyl‐(1 → 6)‐β‐D‐glucopyranosyl ester (3), 3‐O‐α‐L‐arabinopyranosyl‐(1 → 3)‐[α‐L‐rhamnopyranosyl‐(1 → 2)‐]α‐L‐arabinopyranosyl‐akebonic acid‐28‐O‐β‐D‐glucopyranosyl‐(1 → 6)‐β‐D‐glucopyranosyl ester (6), 3‐O‐α‐L‐arabinopyranosyl‐(1 → 3)‐[α‐L‐arabinopyranosyl‐(1 → 2)‐]α‐L‐arabinopyranosyl‐akebonic acid‐28‐O‐β‐D‐glucopyranosyl‐(1 → 6)‐β‐D‐glucopyranosyl ester (7). Copyright © 2008 John Wiley & Sons, Ltd.