Gao Hao

Five new bidesmoside triterpenoid saponins from Stauntonia chinensis

Eleven triterpenoid saponins (1–11) were isolated from Stauntonia chinensis DC. (Lardizabalaceae), including five new compounds, yemuoside YM21–25 (1–3, 6, 7) structures of which were elucidated by chemical methods and a combination of MS, 1D‐ and 2D‐ NMR experiments including DEPT, 1H1H 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