2009
DOI: 10.1590/s0100-40422009000900002
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Toxicidade e atividade antioxidante de flavonoides das cascas das raízes de Lonchocarpus filipes

Abstract: Recebido em 17/3/08; aceito em 24/5/09; publicado na web em 6/11/09 TOXICITY AND ANTIOXIDANT ACTIVITY OF FLAVONOIDS FROM Lonchocarpus filipes ROOT BARK. The phytochemical investigation of dichloromethane extract from root bark of Lonchocarpus filipes Benth (Leguminosae) afforded four flavonoids including three dibenzoylmethane derivatives rarely found in nature. The structures were established based on their spectral data ( 1 H and 13 C NMR, 2D-NMR) as being: lanceolatin B (1), pongamol (2), (E)-7-O-methylpong… Show more

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Cited by 5 publications
(7 citation statements)
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References 16 publications
(30 reference statements)
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“…Previous studies identified one flavone and three dibenzoylmethane derivatives from L. filipes (M. filipes). 1 In the present study, the dichloromethane extract of M. filipes root bark was fractionated and purified by a combination of chromatographic analyses (CC, TLC and preparative TLC). We describe the isolation and identification of one dibenzoylmethane derivative (1), four dibenzoylmethane derivatives with α,α-dimethylallyl (prenyl) substituent attached to the central carbon (C-8) (2-5), one flavanone (6), and one flavone (7) (Figure 1).…”
Section: Resultsmentioning
confidence: 99%
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“…Previous studies identified one flavone and three dibenzoylmethane derivatives from L. filipes (M. filipes). 1 In the present study, the dichloromethane extract of M. filipes root bark was fractionated and purified by a combination of chromatographic analyses (CC, TLC and preparative TLC). We describe the isolation and identification of one dibenzoylmethane derivative (1), four dibenzoylmethane derivatives with α,α-dimethylallyl (prenyl) substituent attached to the central carbon (C-8) (2-5), one flavanone (6), and one flavone (7) (Figure 1).…”
Section: Resultsmentioning
confidence: 99%
“…14,15 Significant antitumor, antimalarial and trypanocidal activities have recently been reported for a number of dibenzoylmethanes and synthetic derivatives. 16 We report here the isolation and characterization of three new dibenzoylmethane derivatives (1)(2)(3) together with four known compounds (4-7), from the root bark of M. filipes. The antiproliferative activity of the dibenzoylmethane derivatives was evaluated.…”
Section: Introductionmentioning
confidence: 99%
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“…Em estudo precedente 1 foi relatado o isolamento de várias substâncias flavonoídicas a partir de L. araripensis. Tendo em vista que compostos fenólicos tais como os flavonoides são importantes na dieta e na saúde humana [3][4][5] e considerando também a relativa abundancia destes constituintes no gênero em epígrafe, foi efetuado o re-estudo fitoquímico da espécie L. araripensis, pesquisando diferentes partes da planta. Neste re-estudo foram isolados os flavonoides 1, a partir das cascas do caule e 2 e 3, a partir do lenho do caule.…”
Section: Introductionunclassified