| Revista: | Quimica nova |
| Base de datos: | PERIÓDICA |
| Número de sistema: | 000313214 |
| ISSN: | 0100-4042 |
| Autores: | Silva, Davi Antas e1 Silva, Tania Maria Sarmento da Lins, Antonio Claudio da Silva Costa, Danielly Albuquerque da Cavalcante, Jose Marcilio Sobral Matias, Wemerson Neves Souza, Maria de Fatima Vanderlei de Braz-Filho, Raimundo2 |
| Instituciones: | 1Universidade Federal da Paraiba, Laboratorio de Tecnologia Farmaceutica "Prof. Delby Fernandes de Medeiros", Joao Pessoa, Paraiba. Brasil 2Universidade Estadual do Norte Fluminense, Centro de Ciencias e Tecnologia, Campos dos Goytacazes, Rio de Janeiro. Brasil |
| Año: | 2006 |
| Periodo: | Nov |
| Volumen: | 29 |
| Número: | 6 |
| Paginación: | 1250-1254 |
| País: | Brasil |
| Idioma: | Portugués |
| Tipo de documento: | Artículo |
| Enfoque: | Experimental, aplicado |
| Resumen en inglés | The phytochemical investigation of Sida galheirensis led to the isolation of 5,4'-dihydroxy-3,7,3´-trimethoxyflavone, 17³-ethoxyphaeoforbide, a rare natural product, 6,7-dimethoxycoumarin, ortho-hydroxybenzoic acid, sitosterol-3-O-beta-D-glucopyranoside, stigmasterol-3-O-beta-D-glucopyranoside, 5,7,4'-trihydroxyflavone, 5,7,3',4'-tetrahydroxyflavone, kaempferol-3-O-beta-D-(6"-E-p-coumaroyl) glucopyranoside and luteolin 7-O-beta-D-glucopyranoside. Their structures were assigned based on spectroscopic analyses, including two-dimensional NMR techniques. Antioxidant activities of hexane, CHCl3, EtOAc, BuOH and EtOH extracts of Sida galheirensis were measured using the 1,2-diphenyl-2-picryl-hydrazyl (DPPH) free radical scavenging assay. This is also the first work reporting the chemical investigation of Sida galheirensis |
| Disciplinas: | Química |
| Palabras clave: | Fitoquímica, Angiospermas, Flavonoides, Actividad antioxidante, Sida galheirensis, Malvaceae |
| Keyword: | Chemistry, Phytochemistry, Angiosperms, Flavonoids, Antioxidant activity, Sida galheirensis, Malvaceae |
| Texto completo: | Texto completo (Ver HTML) |
