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metadata.dc.type: | Artigo de Periódico |
Title: | Flavonóide e triterpenos de Stigmaphyllom paralias |
Other Titles: | Química Nova |
Authors: | David, Jorge Mauricio Santos, Fátima A. Guedes, Maria Lenise da S. David, Juceni Pereira de Lima |
metadata.dc.creator: | David, Jorge Mauricio Santos, Fátima A. Guedes, Maria Lenise da S. David, Juceni Pereira de Lima |
Abstract: | Stigmaphyllom paralias is a herb belonging to the family Malpighiaceae that occurs in sand soil of brazilian " restinga". This is the first report regarding phytochemical study with this species. The hexane extract of the aerial parts of plant afforded the triterpenes friedelin, lupenone, 3-oxo-a-amirin and 3-oxo-b-amirin, the mixture of a-amirinyl palmitate and stearate, lupeol and 3,4-seco-friedelan-3-oic acid. The AcOEt extract yielded the flavonoid luteolin-7-rutinoside. All compounds were characterized by analysis of spectrometric data and the fatty acids esterified with a-amirine were identified by GC/MS of methyl derivatives of transesterified products . This is the first natural occurence of 3,4-seco-friedelan-3-oic acid and the 13C NMR spectral data were inequivocally assigned by two-dimensional techniques. This work also permitted to correct the 13C NMR resonances attributed to methyl groups C-26 and C-27 of fridelin. |
Keywords: | Stigmaphyllom paralias 3,4-seco-friedelan-3-oic acid luteolin-7-ruthenoside |
URI: | http://www.repositorio.ufba.br/ri/handle/ri/4866 |
Issue Date: | 2003 |
Appears in Collections: | Artigo Publicado em Periódico (Química) |
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