isolados das cascas das raízes de Lonchocarpus obtusos (Leguminosae). As estruturas de todos os compostos isolados foram determinadas usando métodos espectrométricos tais como RMN 1D e 2D (COSY, HSQC e HMBC) e EMAR, além da comparação com dados espectrais descritos na literatura para compostos de estruturas semelhantes.Two new furanoflavonoids, 5-hydroxy-2''-isopropenyl-3-methoxyfurane-(2",3":7,8)-flavone and 5-hydroxy-2''-(1-hydroxy-1-methylethyl)-3-methoxyfurane-(2",3":7,8)-flavone, along with thirteen other known compounds, were isolated from the root barks of Lonchocarpus obtusus (Leguminosae). The structures of all compounds were determined by spectrometric methods such as 1D and 2D NMR (COSY, HSQC and HMBC) and HREISMS beside comparison with spectral data for similar compounds.
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