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Triterpenos esterificados com ácidos graxos e ácidos triterpênicos isolados de Byrosonima microphylla Triterpenes esterified with fatty acid and triterpene acids isolated from Byrsonima microphylla

By Carla C. Mendes, Frederico G. Cruz, Jorge M. David, Ivan P. Nascimento and Juceni P. David

Abstract

<abstract language="eng">The hexane extract of leaves of B. microphylla afforded a mixture of triterpenes esterified with fatty acids. Analyses of spectral data of the mixture and of the derivatives obtained by a transesterification reaction with NaOMe/MeOH permitted to identify the composition of the mixtures as being 24-hydroxy-urs-12-enyl 3b-eicosanate, estearate and palmitate as well as of the 24-hydroxy-olean-12-enyl 3b-eicosanate, estearate and palmitate. From the choroform and ethyl acetate extracts were isolated the oleanolic and 3b,24-dihydroxy-urs-12-en-28-oic acids, quercetin and methyl galic ester, respectively. The compounds were identified through analysis of their spectral data

Topics: Byrsonima microphylla, triterpenes, fatty acid esters of triterpenes, Chemistry, QD1-999, Science, Q, DOAJ:Chemistry (General), DOAJ:Chemistry
Publisher: Sociedade Brasileira de Química
Year: 1999
DOI identifier: 10.1590/S0100-40421999000200007
OAI identifier: oai:doaj.org/article:895ed42135494b62bdbd6c271a04d367
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