- Saponins from Leaves of Acanthopanax senticosus HARMS., Ciwujia; Structures of Ciwujianosides B, C1, C2, C3, C4, D1, D2 and E
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Eleven triterpenoid saponins were isolated from the leaves of a Chinese folk medicine, Acanthopanax senticosus (RUPR. et MAXIM) HARMS.Of these compounds, three were identified as known saponins.The structures of eight new saponins named ciwujianosides B (1), C1, (2), C2 (3), C3 (4), C4 (5), D1 (6), D2 (7), and E (8) were elucidated to be as follows: (1), 3-O-α-rhamnopyranosyl-(1->2)-β-arabinopyranosyl-30-norolean-12,20(29)-dien-28-oic acid 28-O-α-rhamnopyranosyl-(1->4)-β-glucopyranosyl-(1->6)-β-glucopyranosyl ester; (2), 3-O-α-arabinopyranosyl-30-norolean-12,20(29)-dien-28-oic acid 28-O-α-rhamnopyranosyl-(1->4)-β-glucopyranosyl-(1->6)-β-glucopyranosyl ester; (3), 3-O-α-rhamnopyranosyl-(1->2)-α-arabinopyranosyl-30-norolean-12,20(29)-dien-28-oic acid 28-O-α-rhamnopyranosyl-(1->4)-6-O-acetyl-β-glucopyranosyl-(1->6)-β-glucopyranosyl ester; (4), 3-O-α-arabinopyranosyl oleanolic acid 28-O-α-rhamnopyranosyl-(1->4)-β-glucopyranosyl(1->6)-β-glucopyranosyl ester; (5), 3-O-α-rhamnopyranosyl-(1->2)-α-arabinopyranosyl oleanolic acid 28-O-α-rhamnopyranosyl-(1->4)-6-O-acetyl-β-glucopyranosyl-(1->6)-β-glucopyranosyl ester; (6), 3-O-α-arabinopyranosyl oleanolic acid 28-O-α-rhamnopyranosyl-(1->4)-6-O-acetyl-β-glucopyranosyl(1->6)-β-glucopyranosyl ester; (7), 3-O-α-arabinopyranosyl-30-norolean-12,20(29)-dien-28-oic acid 28-O-α-rhamnopyranosyl-(1->4)-6-O-acetyl-b-glucopyranosyl-30-norolean-12,20(29)-dien-28-oic acid 28-O-α-rhamnopyranosyl-(1->4)-6-O-acetyl-β-glucopyranosyl-(1->6)-β-glucopyranosyl ester; (8), 3-O-α-rhamnopyranosyl-(1->2)-α-arabinopyranosyl-30-norolean-12,20(29)-dien-28-oic acid.Keywords - Acanthopanax senticosus; Araliaceae; saponin; Chinese folk medicine; ciwujianoside; oleanolic acid glycoside; noroleanolic acid glycoside; 30-norolean-12,20(29)-dien-28-oic acid; ciwujia
- Shao, Chun-Jie,Kasai, Ryoji,Xu, Jing-Da,Tanaka, Osamu
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p. 601 - 608
(2007/10/02)
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