Others flavonoids from Ouratea hexasperma (Ochnaceae)

Chromatographic fractionation of the extracts from the leaves of Ouratea hexasperma (Ochnaceae) afforded a new flavone dimer 5-hydroxy-7-methoxyflavone-(4'-O-8")-5",4"' -dihydroxy-7"-methoxyflavone besides known agathisflavone, 7"-methylagathisflavone, epicatechin,...

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Bibliographic Details
Published in:Journal of the Brazilian Chemical Society 2005-06, Vol.16 (3b), p.634-638
Main Authors: Daniel, Juliana F. de S., Carvalho, Mário Geraldo de, Cardoso, Renata da S., Agra, Maria de F., Eberlin, Marcos N.
Format: Article
Language:English
Subjects:
CHEMISTRY, MULTIDISCIPLINARY
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Summary:Chromatographic fractionation of the extracts from the leaves of Ouratea hexasperma (Ochnaceae) afforded a new flavone dimer 5-hydroxy-7-methoxyflavone-(4'-O-8")-5",4"' -dihydroxy-7"-methoxyflavone besides known agathisflavone, 7"-methylagathisflavone, epicatechin, 6-C-glycopyranosyl-luteolin and 3-O-glycopyranosyl-quercetin. The IR, NMR and mass spectra data analyses were used to establish the structures of these compounds.
ISSN:0103-5053
1678-4790
DOI:10.1590/S0103-50532005000400022