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).