Triterpenoid Saponins from Anemone flaccida |
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Authors: | Zhao L Chen W M Fang Q C |
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Institution: | Institute of Materia Medica, Chinese Academy of Medical Sciences Beijing, 100050, People's Republic of China. |
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Abstract: | From the rhizome of ANEMONE FLACCIDA Fr. Schmidt, used in Chinese folk medicine, four saponins of oleanolic acid-A,B,C,D were isolated. By means of spectroscopy and chemical transformation, saponins A, B, and D were identified as 3- O-alpha- L-rhamnopyranosyl-(1-->2)-alpha- L-arabinopyrasyl]-oleanolic acid, 3- O-alpha- L-rhamnopyranosyl-(1-->2)-beta- D-xylopyranosyl]-oleanolic acid, and 3- O-alpha- L-rhamnopyranosyl-(1-->2)-beta- D-glucopyranosyl]-oleanolic acid. These three saponins are known compounds but isolated from ANEMONE plants for the first time. Saponin C was elucidated as 3- O-beta- D-glucopyranosyl-(1-->2)-beta- D-xylopyranosy1]-oleanolic acid, which has not been reported in the literature before, and is named as flaccidoside I. |
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