3-α -(2-O-β-D-glucopiranosil)-D-glucofuranoside della quercetina: nuovo glucoside flavonico della Vestia lycioides

(Quercetin-3-α-(2-0-β-D-glucopyranosyl)-D-glucofuraanoside, a new glycoside of Vestia lycioides). A new flavonol glycoside, the quercetin-3-α-(2-0-β-D-glucopyranosyl)-D-glucofuranoside, has been isolated from the leaves of Vestia lycioides. By the NMR spectrum of the corresponding acetate the α furanosydic structure of the glucose bound to quercetin has been determined. By partial hydrolysis sophorose, (2-O-β-D-glucopyranosyl)-D-glucose, has been obtained