FLAVONOIDS AND A PROANTHOCYANIDIN FROM RHIZOMES OF SELLIGUEA-FEEI

Three novel compounds, as well as a bitter-tasting flavonoid glycoside of known structure, ta-D-glucopyranoside-7-O-alpha-L-rhamnopyranoside , were isolated from the rhizomes of Selliguea feei. The structures of the new compounds were determined as(-)-4 beta-carboxymethyl epiafzel echin (3'-deoxydryopteric acid), epiafielechin-(4 beta-->8,2 beta-->O- ->7)-epiafielechin-(4 beta-->8)-3'-deoxydryopteric acid methyl ester ( selligueain B), and (+)-afzelechin-O-beta-4'-D-glucopyranoside.