Saponinas triterpênicas de Tocoyena brasiliensis Mart. (Rubiaceae)
AUTOR(ES)
Hamerski, Lidilhone, Carbonezi, Carlos Alberto, Cavalheiro, Alberto José, Bolzani, Vanderlan da Silva, Young, Maria Cláudia Marx
FONTE
Química Nova
DATA DE PUBLICAÇÃO
2005-08
RESUMO
The present communication reports the isolation and identification of four triterpenoid saponins from the chloroform extract of the leaves of Tocoyena brasiliensis: 3-O-beta-D-quinovopyranosyl quinovic acid, 3-O-beta-D-quinovopyranosyl cincholic acid, 3-O-beta-D-glucopyranosyl quinovic acid and the 28-O-beta-D-glucopyranosyl ester derivative of quinovic acid as binary mixtures, respectively. From the ethanol extract a flavonoid identified as ramnazin-3-O-rutinoside was obtained. The structures of these compounds were assigned by data analysis of 1D and 2D NMR spectrometry and comparison with data recorded in the literature for these compounds.
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