Dímeros flavônicos bioativos de Ouratea multiflora (Ochnaceae)

AUTOR(ES)
FONTE

Revista Brasileira de Farmacognosia

DATA DE PUBLICAÇÃO

2007-09

RESUMO

Chromatographic fractionation of the organic extract from leaves of Ouratea multiflora afforded the flavone dimers heveaflavone, amentoflavone-7¢¢,4¢¢¢-dimethyl eter, podocarpusflavone-A and amentoflavone. Their structures were elucidated from spectral data, including 2D-NMR experiments of the natural substances. Biological activities of all isolates were evaluated, using antimicrobial assay against Gram-positive bacteria Staphylococcus aureus and Bacillus subtilis, cytotoxicity assay against mouse lymphoma (L5178) and KB cell lines, TLC screening for acetylcholinesterase inhibitors and antioxidant activity measured by DPPH test.

ASSUNTO(S)

ochnaceae ouratea multiflora biflavonoids antibacterial activity

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