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Two New Oleanane Saponins from Anemone flaccida
1Institute of Materia Medica, Chinese Academy of Medical Sciences, Beijing 100050, People's Republic of China.
Abstract:
Two new oleanane saponins, named flaccidoside II and III, were isolated from the rhizome of ANEMONE FLACCIDA Fr. Schmidt. On the basis of spectroscopic analysis and chemical transformation their structures were elucidated as 3- O-[alpha- L-rhamnopyranosyl-(1-->2)-beta- D-xylopyranosyl]-oleanolic acid 28- O-[alpha- L-rhamnopyranosyl-(1-->4)-beta- D-glucopyranosyl-(1-->6)-beta- D-glucopyranoside] and 3- O-[beta- D-glucopyranosyl-(1-->2)-beta- D-xylopyranosyl]-oleanolic acid 28- O-[alpha- L-rhamnopyranosyl-(1-->4)-beta- D-glucopyranosyl-(1-->6)-beta- D-glucopyranoside].
