Flavonol glycosides from leaves of Strychnos variabilis

Quercetin 3-O-galactoside, quercetin 3-O-robinobioside and kaempferol 3-O-robinobioside were obtained from the leaves of Strychnos variabilis. These flavonoids were isolated by DCCC (Droplet Counter Current Chromatography). YThe structures were established by TLC (co-chromatography), UV, NMR ,FAB-MS, hydrolytic and chemical methods.