Tannins and Related Compounds. LXXI. : Isolation and Characterization of Mongolicins A and B, Novel Flavono-ellagitannins from Quercus mongolica var. grosseserrata

Abstract

Two novel flavono-ellagitannins, mongolicins A (1) and B (4), in which hydrolysable tannin and flavonoid moieties are connected through a carbon-carbon linkage, were isolated from the bark of Quercus mongolica var. grosseserrata, together with a large quantity of (+)-taxifolin 3-O-β-D-glucopyranoside (3).