[Chemical Constituents from Stauntonia chinensis]

To study the chemical constituents of Stauntonia chinensis.

The chemical constituents were isolated and purified by column chromatography on silica gel,ODS,Sephadex LH-20 and MPLC. Their structures were elucidated on the basis of physicochemical properties and special analysis.

Seven compounds were isolated from the leaves of Stauntonia chinensis,whose structures were elucidated as 3-O-β-D-glucopyranosyl-( 1 →3)-[β-D-xylopyranosyl-( 1 →2) ]-α-L-arabinopyranosyl-28-O-[α-L-rhamnopyranosyl-( 1 →4)-β-D-glucopyranosyl-( 1 →6)-β-D-glucopyranosyl]-3β-hydroxy-30-norolean-12,20( 29)-dien-28-oic acid( 1),3-[( O-β-D-glucopyranosyl-( 1→3)-[α-L-rhamnopyranosyl-( 1 →2) ]-α-L-arabinopyranosyl) oxy]-30-norolean-12,20( 29)-dien-28-oic acid O-β-D-glucopyranosyl-( 1 → 6)-β-D-glucopyranosyl ester( 2),3-O-β-D-[( α-L-xylopyranosyl-( 1 → 2)-O-α-L-arabinopyranosyl)oxy]-30-norolean-12-en-28-oic acid α-L-rhamnopyranosyl-( 1 → 4)-O-β-D-glucopyranosyl-( 1 → 6)-O-β-D-glucopyranosyl ester( 3), yemuoside YM27( 4), yemuoside YM21( 5),yemuoside YM10( 6) and yemuoside YM7( 7).

Compounds 1 ~ 3 are isolated from this plant for the first time.