Fallopia multiflora (Thunberg) Haraldson (Polygonaceae), synonym Polygonum multiflorum Thunb., is an important medicinal plant in Oriental medicine.
Chemical investigation of the roots of Fallopia multiflora led to the isolation of eleven phenolic compounds including 8-0-[alpha]-D-apiofuranosyl-(1 [right arrow] 6)-[beta]-D-glucopyranoside (1), 8-O-3-D-glucopyranoside (2), 6-methoxy-3-methyl-1,6,8-trihydroxy-2-naphthoic acid 8-O-[beta]-D-glucopyranoside (3), torachrysone pleuropyrone A (4), emodin (5), emodin 8-O-glucopyranoside (6), physcionin (7), resveratrol (8), 2,3,5,4'-tetrahydrox-ystilbene-2-O-[beta]-glucoside (9), benzyl gentiobioside (10), and catechin (11).