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metadata.dc.type: | Artigo de Periódico |
Título : | Flavonóide e triterpenos de Stigmaphyllom paralias |
Otros títulos : | Química Nova |
Autor : | 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 |
Resumen : | 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. |
Palabras clave : | Stigmaphyllom paralias 3,4-seco-friedelan-3-oic acid luteolin-7-ruthenoside |
URI : | http://www.repositorio.ufba.br/ri/handle/ri/4866 |
Fecha de publicación : | 2003 |
Aparece en las colecciones: | Artigo Publicado em Periódico (Química) |
Ficheros en este ítem:
Fichero | Descripción | Tamaño | Formato | |
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16427.pdf | 111,4 kB | Adobe PDF | Visualizar/Abrir |
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