Triterpenoids from Sanguisorba officinalis

Abstract Seven triterpenoids, i.e., 3β-[(α- l -arabinopyranosyl)oxy]-19β-hydroxyurs-12,20(30)-dien-28-oic acid ( 1 ), 3β-[(α- l -arabinopyranosyl)oxy]-urs-11,13(18)-dien-28-oic acid β- d -glucopyranosyl ester ( 2 ), 2α,3α,23-trihydroxyurs-12-en-24,28-dioic acid 28-β- d -glucopyranosyl ester ( 3 ), 3β-[(α- l -arabinopyranosyl)oxy]-urs-12,19(20)-dien-28-oic acid ( 4 ), 3β-[(α- l -arabinopyranosyl)oxy]-urs-12,19(29)-dien-28-oic acid ( 5 ), 3β-[(α- l -arabinopyranosyl)oxy]-19α-hydroxyolean-12-en-28-oic acid ( 6 ), 2α,3β-dihydroxy-28-norurs-12,17,19(20),21-tetraen-23-oic cid ( 7 ), together with three known ones ( 8 – 10 ), were isolated from the roots of Sanguisorba officinalis . Their structures were determined by spectroscopic and chemical methods. Compounds 7 and 10 showed marginal inhibition activity against the growth of tumor cell lines.