Two new triterpenoid saponins,raddeanoside 16 and raddeanoside 17 were isolated from the ethanolic extract of the rhizome of Anemone raddeana Regel. Their structures were elucidated as 3-O-α-L-arabinopyranosyl(1→3)-α-L-rhamnopyranosyl(1→2) [β-D-glucopyranosyl(1→4)]-α-L-arabinopyranosyl oleanolic acid 28-O-α-L-rhamnopyranosyl(1→4)-β-D-glucopyranosyl (1→6)-β-D-glucopyranoside (1) and 3-O-β-D-glucopyranosyl(1→4)-β-D-glucopyranosyl(1→3)-α-L-rhamnopyranosyl(1→2)-α-L-arabinopyranosyl oleanolic acid 28-O-α-L-rhamnopyranosyl(1→4)-β-D-glucopyranosyl(1→6)-β-D-glucopyranoside (2) by 1D and 2D NMR spectroscopic methods, including DEPT, HMQC, HMBC, GCOSY and TOCSY experiments, respectively.

Key words: Anemone raddeana Regel, raddeanoside 16, raddeanoside 17