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Journal of the Mexican Chemical Society
versão impressa ISSN 1870-249X
Resumo
LI, Shiping et al. Flavonoids and Triterpenoids from the Roots of Rosa laevigata. J. Mex. Chem. Soc [online]. 2014, vol.58, n.4, pp.374-377. ISSN 1870-249X.
Chemical investigation on the root of R. laevigata led the isolation and identification of two new flavonoids, (+)-catechin-8-acetic acid (1) and guibourtacacidine 4-methyl ether (2), one known flavonoid, guibourtacacidine (3), along with seven known triterpenoids, euscaphic acid (4), kajiichigoside F1 (5), nigaichigoside F2 (6), rubuside J (7), tomentic acid (8), rosamutin (9) and betulinic acid (10). Their structures were established on the basis of spectroscopic evidence and comparisons with literature data. Compounds 1, 2 and 3 showed considerable radical scavenging activity in the 1, 1-diphenyl-2-picrylhydrazyl (DPPH) assay.
Palavras-chave : Rosa laevigata; flavonoids; triterpenoids; DPPH radical scavenging activity.