Abstract: The 70% EtOH extracts of Sanguisorba officinalis. L  (Rosaceae) were investigated on their chemical constituents.And 10 compounds were identified as zhiyu glycoside I (1),3β-[(α-L-arabinopyranosyl) oxy]-urs-12,18(19)-dien-28-oic acid β-D-glucopyranosyl ester (2),3β-［(α-L-arabinopyranosyl) oxy］ urs-12,19(29)-dien-28-oic acid 28-β-D-glucopyranosyl ester (3),rosamultin (4),3α,19α-dihydroxyurs-12-en-28-oic acid 28-β-D-glucopyranosyl ester (5),pomolic acid (6),1β-hydroxyeuscaphic acid (7),2α,3α-dihydroxyursa-12,19(29)-dien-28-oic acid β-D-glucopyranosyl ester (8),2α,3α,19α- trihydroxyurs-12-en-28-oic acid (9),3β-hydroxy-12-ursen-28-oic acid (10) were obtained from Sanguisorba officinalis L.Their structures were elucidated by comparing their spectroscopic data with those reported in literatures 2 and 8 were isolated from this plant for the first time.

Key words: Sanguisorba officinalis L., triterpenes, ursanes, separation, structure identification