Z Naturforsch [C]. 1997 Mar-Apr; 52(3-4): 264-6.
Triterpenoids from Acaena pinnatifida R. et P.
Department of Pharmacology and Toxicology, College of Pharmacy, University of Arizona, Tucson 85721, USA.
Eight urs-12-ene triterpenoids, beta-sitosterol, (+)-catechin, and apigenin 7-O-glucoside were isolated from the leaves of Acaena pinnatifida R. et P. The triterpenoids were characterized as pomolic acid, pomolic acid-3-acetate, tormentic acid, 2-epi-tormentic acid, euscaphic acid, tormentic acid glucoside, niga-ichigoside F1, and niga-ichigoside F2.