New Lupane Glycosides from Pulsatilla chinensis

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Abstract
Two new lupane glycosides along with five known triterpenoids were isolated from the roots of Pulsatilla chinensis (Ranunculaceae). The structures of the new glycosides were determined to be 3-O-β-D-glucopyranosyl(1→3)-α-L-arabinopyranosyl-23-hydroxybetulinic acid 28-O-α-L-rhamnopyranosyl(1→4)-β-D-glucopyranosyl(1→6)-β-D-glucopyranosyl ester (pulsatilloside D, 6) and 3-O-[β-D-glucopyranosyl(1→4)][α-L-rhamnopyranosyl(1→2)]-α-L-arabinopyranosyl-23-hydroxybetulinic acid 28-O-α-L-rhamnopyranosyl(1→4)-β-D-glucopyranosyl(1→6)-β-D-glucopyranosyl ester (pulsatilloside E, 7) by spectroscopic analysis and chemical methods. The compounds were evaluated for cytotoxic activities against K-562 human leukemia and HeLa cells.

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