Unequivocal assignments of flavonoids from Tephrosia sp. (Fabaceae) |
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| Authors: | A M C Arriaga J Q Lima J N Vasconcelos M C F de Oliveira M Andrade‐Neto G M P Santiago D E A Uchoa G T Malcher J Mafezoli R Braz‐Filho |
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| Institution: | 1. Curso de Pós‐gradua??o em Química, Departamento de Química Organica e Inorganica, Universidade Federal do Ceará, Cx Postal 12200, CEP 60451‐970, Fortaleza ‐ CE, Brazil;2. Departamento de Farmácia, Universidade Federal do Ceará, Rua Capit?o Francisco Pedro 1210, CEP 60430‐370, Fortaleza ‐ CE, Brazil;3. Pesquisador Visitante 1‐CNPq/Programa de Pós‐gradua??o em Química (PPGQ), Universidade Federal do Ceará, Fortaleza—CE, Brazil |
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| Abstract: | 1H and 13C NMR chemical shifts of praecansone B, pongaflavone and dehydrorotenone isolated from Tephrosia egregia Sandw and obovatin from T. toxicaria Pers. were unambiguously assigned by 1D and 2D NMR experiments including 1H, 1H COSY, gHMQC and gHMBC, allowing the correction of literature assignments.Copyright © 2009 John Wiley & Sons, Ltd. |
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| Keywords: | NMR 1H NMR 13C NMR 1D/2D NMR praecansone B pongaflavone obovatin dehydrorotenone Tephrosia Fabaceae |
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