Studies on Flavonoids from Stems and Leaves of Panax notoginseng

OBJECTIVE To separate and identify the flavonoids from the stems and leaves of Panax notoginseng(Burk.) F.H.Chen.METHODS It was decocted with water,then absorbed by macroporous adsorption resin,isolated by silica gel column chromatography and ODS column chromatography.RESULTS Six compounds were elucidated as kaempferol(Ⅰ),quercetin(Ⅱ),kaempferol 7-O-α-L-rhamnoside(Ⅲ),kaempferol 3-O-β-D-galactoside(Ⅳ),kaempferol 3-O-(2″-β-D-glucopyranosyl)-β-D-galactopyranoside(Ⅴ) and quercetin 3-O-(2″-β-D-glucopyranosyl)-β-D-galactopyranoside(Ⅵ).CONCLUSION compound Ⅲ,Ⅳ,Ⅴ and Ⅵ are isolated and identified for the first time from Panax notoginseng.