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Liquid chromatography–diode array detection–electrospray ionisation mass spectrometry/nuclear magnetic resonance analyses of the anti-hyperglycemic flavonoid extract of Genista tenera Structure elucidation of a flavonoid-C-glycoside
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Orientador(es)
Resumo(s)
The anti-hyperglycemic flavonoid extract obtained from Genista tenera was first studied by liquid chromatography (LC)–diode array detection (DAD) which showed the presence of two major compounds. One of them was identified as genistein-7-O-glucoside. Luteolin-7-O-glucoside was detected as a minor constituent, while luteolin-7,3′-di-O-glucoside and rutin were found in trace amounts. LC–DAD–ESI–MS and NMR were used to confirm the structure of these compounds and allowed the elucidation of the structure of the unknown major compound, which is the flavonoid 5,7,4′-trihydroxyisoflavone-8-C-glucoside.
Descrição
Palavras-chave
Genista tenera LC–DAD–ESI–MS NMR flavonoid glycoside 5,7,4′-Trihydroxyisoflavone-8-C-glucoside
Contexto Educativo
Citação
Rauter, A.P.; Martins, A.; Borges, C.; Ferreira, J.; Justino, J.; Bronze, M.R.; Coelho, A.V.; Choi, Y.H. & Verpoorte, R. (2005). Liquid chromatography–diode array detection–electrospray ionisation mass spectrometry/nuclear magnetic resonance analyses of the anti-hyperglycemic flavonoid extract of Genista tenera Structure elucidation of a flavonoid-C-glycoside. Journal of Chromatography A, 1089(1-2), 59-64. DOI:10.1016/j.chroma.2005.06.046
Editora
Elsevier