Compound 1 and 2 were isolated as a yellow needle by repeated column chromatography on silica gel 60 F254 and subsequent repeated gel filtration on sephadex LH20 from the n – butanol portion of V. doniana. Their structures were established mainly by FTIR, FABMS, High resolution (1Dand 2D) spectroscopic and chemical analysis. They are hence determined as 3 – O– [α – L – rhamnopyranosyl – ( 1→6) – β – D – glucopyranosyl] – 7 – O – (β – D- glucopyranosyl) – (quercetin) and 3-O –β-glucosyl-(1→2)- β-glucoside-7-O- β-glucosyl-(1→4) –α-rhamnoside- (myricetin)
