Journal
JOURNAL OF THE BRAZILIAN CHEMICAL SOCIETY
Volume 16, Issue 3B, Pages 662-665Publisher
SOC BRASILEIRA QUIMICA
DOI: 10.1590/S0103-50532005000400029
Keywords
Cordia piauhiensis; Boraginaceae; triterpenes; saponins
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A new monodesmoside triterpenoid saponin characterized as 3 beta-O-alpha-L-rhamnopyranosyl-(1 -> 2)-beta-D-glucopyranosyl pomolic acid, was isolated from Cordia piauhiensis Fresen ( Boraginaceae). Its structure was determined by extensive NMR analysis, including H-1, H-1-COSY, HMQC, HMBC, and NOESY experiments. In addition, four known triterpenoids: quinovic acid, cincholic acid, cincholic 3 beta-O-6-deoxy-beta-D-glucopyranoside acid and quinovic 3 beta-O-beta-D-glucopyranoside acid were also isolated.
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