%0 Journal Article
%T New flavonoids and other constituents from Ouratea hexasperma (Ochnaceae)
%A Carvalho
%A M芍rio G. de
%A Suzart
%A Luciano R.
%A Cavatti
%A Lorena C.
%A Kaplan
%A Maria Auxiliadora C.
%J Journal of the Brazilian Chemical Society
%D 2008
%I Sociedade Brasileira de Qu赤mica, SBQ
%R 10.1590/S0103-50532008000700029
%X chromatographical fractionation of the methanol extract from the branches of ouratea hexasperma (ochnaceae) afforded two new flavonoids, 7-o-汕-d-glucopyranosyl-6-(3-methylbut-2-enyl)-5,4'-dihydroxyflavanonol (6-汕,汕-dimethylallylaromadendrin-7-o-汕-d-glucoside) and 7-o-汕-d-glucopyranosyl-6-(3-methylbut-2-enyl)-3,5,4'-trihydroxyflavone (6-汕,汕-dimethylallylkaempferol-7-o-汕-d-glucoside) besides a mixture of sitosterol and stigmasterol,lupeol, sitosterol-3-o-汕-d-glycopyranoside and 2,4-dihydroxyphenylacetic acid. the structures were established by analysis of ir, esi-ms, and nmr spectra of the natural substances, and those of the dimethyl ether and peracetyl-derivatives of the new flavone, as well as comparison with literature values.
%K ochnaceae
%K ouratea hexasperma
%K glucopyranosyl-prenylflavonoids
%K prenylflavanonol glucoside
%K prenylflavone glucoside
%K 2
%K 4-dihydroxyphenylacetic acid.
%U http://www.scielo.br/scielo.php?script=sci_abstract&pid=S0103-50532008000700029&lng=en&nrm=iso&tlng=en