Journal of the Brazilian Chemical Society | |
Luxenchalcone, a new bichalcone and other constituents from Luxemburgia octandra | |
Mário G. De Carvalho2  Cassia C. Fernandes Alves2  Kedma G. S. Da Silva2  Marcos N Eberlin1  Alceni A Werle1  | |
[1] ,Universidade Federal Rural do Rio de Janeiro Departamento de Química Seropédica RJ ,Brazil | |
关键词: Luxemburgia octandra; Ochnaceae; flavonoids; bichalcone; terpenoids; | |
DOI : 10.1590/S0103-50532004000100023 | |
来源: SciELO | |
【 摘 要 】
Chromatographic fractionation of leaves and branches extracts from Luxemburgia octandra (Ochnaceae) afforded isoliquiritigenin, 3'-hydroxyisoliquiritigenin, b-sitosterol, stigmasterol, lupeol, betulinic acid, the biflavonoid, 4',5,7-trihydroxyflavone-(3'®O®4'")-5",7"-dihydroxyflavanone and a new bichalcone 4,2',4'-trihydroxychalcone-(3®O®4")-2'",4'"-dihydroxychalcone (luxenchalcone). The structures were established from analysis of IR, MS and NMR spectral data, including 2D-NMR experiments of the natural substances and of the luxenchalcone methyl derivative.
【 授权许可】
CC BY
All the contents of this journal, except where otherwise noted, is licensed under a Creative Commons Attribution License
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