Abstract: Twelve compounds were isolated from the aerial parts of Rumex patientia. Their structures were identified as Methyl 2,4-dihydroxy-3,6-dimethylbenzoate (1),1-(2,4-Dihydroxy-6-methyl phenyl)-acetophenone (2),Emodin (3),Chrysophanol (4),Quercitrin (5),Imperanene (6),2,3-Dihydro-2-(4-hydroxy-3,5-dimethoxyphenyl)-3-hydroxymethyl-5-(2-formylvinyl)-7-methoxybenzofuran (7),4-Ketopinoresinol (8),(+)-Lyoniresinol 3α-O-β-D-glucopyranoside (9),Ursolic acid (10),5-en-7α-hydroxysitosterol (11),and β-stiosterol (12),respectively,by spectroscopic methods.Among these,compounds 1,2,5-11 were isolated from this plant for the first time.

Key words: Rumex patientia L., polygonaceae, chemical constituents