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Rev. bras. farmacogn ; 17(1): 8-13, jan.-mar. 2007. ilus, tab, graf
Article in English | LILACS | ID: lil-451558

ABSTRACT

The hypoglycemic activity of aqueous extracts from Bauhinia forficata L. and Bauhinia monandra Kurz leaves (10 percent w/v) was evaluated in normoglycemic mice. Both extracts have shown hypoglycemic activity using this methodology. It was also possible to isolate two flavonoids from B. forficata L., 3,7-di-O-alpha-rhamnopyranosylquercetin and 3,7-di-O-alpha-rhamnopyranosylkaempferol (kaempferitrin), whose structures were elucidated by usual NMR techniques. Only the quercetin derivative was identified in B. monandra aqueous extract by HPLC.


Extratos aquosos das folhas de Bauhinia forficata L. e Bauhinia monandra Kurz (10 por cento p/v) foram testados em camundongos normoglicêmicos, objetivando averiguar a sua atividade hipoglicemiante. Ambos os extratos mostraram atividade hipoglicemiante na metodologia empregada. Ainda, foi possível isolar de B. forficata L. dois flavonóides, quercetina-3,7-O-dirhamnosido e kaempferol-3,7-O-dirhamnosido, sendo as estruturas estabelecidas por técnicas clássicas de RMN. Apenas o derivado da quercetina foi identificado no extrato aquoso de Bauhinia monandra por CLAE.


Subject(s)
Mice , Bauhinia , Chromatography , Flavonoids , Hypoglycemia , Plant Extracts
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