Abstract
Two new triterpenoid saponins were isolated from the 70% ethanol extract of the rhizome of Anemone amurensis, they are oleanolic acid 28-O-β-d-glucopyranosyl-(1 → 3)-α-l-rhamnopyranosyl-(1 → 4)-β-d-glucopyranosyl-(1 → 6)-β-d-glucopyranosyl ester (1) and 23,27-dihydroxy oleanolic acid 3-O-α-l-arabinopyranoside (2). The structures of 1 and 2 were elucidated on the basis of chemical and spectral analysis, including 1D and 2D NMR data and HR-ESI-MS. Compounds 1 and 2 were tested for cytotoxicities against three human cancer cell lines (A549, Hep-G2, and MCF-7). Compound 1 showed potent cytotoxicity with IC50 values of 34.76, 41.17, and 28.92 μM, respectively, while compound 2 with IC50>100 μM.
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