A new flavonostilbene glycoside and four new stilbene derivatives from the roots of .

One new flavonostilbene glycoside, polygonflavanol C (), two new dimeric stilbene glycosides, multiflorumiside M and multiflorumiside N (-), one new diphenyl ethanol glycoside, ()-2,3,5,4'-tetrahydroxy-diphenylethanol 2---D-glucopyranoside (), and one new deoxybenzoin glycoside, 2,4,3',5'-tetrahydroxy-6-methyl-deoxybenzoin 2---D-glucopyranoside (), together with six known ones (-), were isolated from the roots of . Their structures were elucidated by the comprehensive spectroscopic analyses. In addition, compounds and showed significantly anti-inflammatory activity.