Flavonoides de Lonchocarpus campestris (Leguminosae)
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چکیده
منابع مشابه
Derris (Lonchocarpus) urucu (Leguminosae) extract modifies the peritrophic matrix structure of Aedes aegypti (Diptera:Culicidae).
Aqueous suspension of ethanol extracts of Derris (Lonchocarpus) urucu (Leguminosae), collected in the state of Amazonas, Brazil, were tested for larvicidal activity against the mosquito Aedes aegypti (Diptera:Culicidae). The aim of this study was to observe the alterations of peritrophic matrix in Ae. aegypti larvae treated with an aqueous suspension of D. urucu extract. Different concentration...
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The NMR study of the flavonoids 6a,11a-dihydro-9-methoxy-6H-benzofuran[3,2-C] benzopiran-3-ol (1) and (2,3cis-3,4-cis-3,4,5,8-tetramethoxy-[1,2 : 6,7]-furanoflavan (2) is described. In addition to convencional 1D NMR methods, 2D shift-correlated NMR techniques (COSY, HMQC, HMBC and NOESY) were used for the complete H and C resonance assignments. The relative stereochemistry at the asymmetric ce...
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The light petroleum extract from the roots of Lonchocarpus muehlbergianus Hassl contained nine flavonoids, including six new ones. These are 2,4-cis-2,4,5,8-tetramethoxy-(2'',3'':6,7)-furanoflavan; 2,4-cis-4-hydroxy-2,5,8-trimethoxy-(2'',3'':6,7)-furanoflavan; 2,4-cis-2-prenyloxy-4,5,8-trimethoxy-(2'',3'':6,7)-furanoflavan; 2,4-cis-2-prenyloxy-4-hydroxy-5,8-dimethoxy-(2'',3'':6,7)-furanoflavan;...
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Volume 6 • Issue 1 • 2014 The malignant gliomas are primary brain tumors and represents about 78% of all malignant tumors of the central nervous system [1]. The majority of these tumors are considered as high-grade tumors according to the current classification of the World Health Organization (grades III and IV) when diagnosed. Glioblastoma (GB) is the most aggressive form of gliomas, and is h...
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Previous studies have indicated that the yellow pigments (xanthomonadins) produced by phytopathogenic Xanthomonas bacteria are unimportant during pathogenesis but may be important for protection against photobiological damage. We used a Xanthomonas campestris pv. campestris parent strain, single-site transposon insertion mutant strains, and chromosomally restored mutant strains to define the bi...
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ژورنال
عنوان ژورنال: Química Nova
سال: 2011
ISSN: 0100-4042
DOI: 10.1590/s0100-40422011000200018