Objective: To study the triterpenoid saponins in the rhizome of Anemone flaccida.
Methods: The constituents were separated with various chromatographic techniques and their structures were elucidated by means of physicochemical properties and the analysis of their spectral datas.
Results: Five compounds were isolated and identified as 3-O-beta-D-glucuronypyranosyl-oleanolic acid-28-O-alpha-L-rhamnopyranosyl (1 --> 4)-beta-D-glucopyranosyl(1 --> 6)-beta-D-glucopyra noside (1), 3-O-beta-D-glucuronypyranosyl-oleanolic acid-28-O-beta-D-glucopyranosyl (1 --> 6)-beta-D-glucopyranoside (2), 3-O-alpha-L-rhamnopyranosy (1 --> 2)-beta-D-glucopyranosyl-oleanolic acid-28-O-alpha-L-rhamnopyranosyl (1 --> 4)-beta-D-glucopyranosyl (1 --> 6)-beta-D-glucopyranoside (3), 3-O-alpha-L-rhamnopyranosyl (1 --> 2)-alpha-L-arabinopyrano-syl-oleanolic acid-28-O-alpha-L-rhamnopyranosyl (1 -->4)-beta-D-glucopyranosyl (1 --> 6)-beta-D-glucopyranoside (4), 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 (5).
Conclusion: Compound 1 - 4 are isolated from this plant for the first time. Compound 1,2 are isolated from this genus for the first time.
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