Luxenchalcone, a new bichalcone and other constituents from Luxemburgia octandra

Journal of the Brazilian Chemical Society

Alves, Cassia C. Fernandes¹  Eberlin, Marcos N¹  Universidade Estadual de Campinas, Campinas, Brazil¹  Carvalho, Mário G. de¹  Universidade Federal Rural do Rio de Janeiro, Seropédica, Brazil¹  Silva, Kedma G. S. da¹  Universidade Federal de Ouro Preto, Ouro Preto, Brazil¹  Werle, Alceni A¹ 

关键词: Luxemburgia octandra;    Ochnaceae;    flavonoids;    bichalcone;    terpenoids;   

DOI  :  10.1590/S0103-50532004000100023

学科分类：化学（综合）

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】

Unknown