A new derivative of dihydroochnaflavone isolated from Luxemburgia species (Ochnaceae) and the complete ¹H and 13C NMR chemical shifts assignments

Revista Brasileira de Farmacognosia

Rocha Jr, José G. da¹  Carvalho, Mario G. de¹  Silva, Virginia C.¹  Universidade Federal Rural do Rio de Janeiro, Seropédica, Brasil¹ 

关键词: Ochnaceae;    Luxemburgia;    biflavone;    trimethyl-diacetyl-dihydroochnaflavone.;   

DOI  :  10.1590/S0102-695X2009000100008

来源: Sociedade Brasileira de Farmacognosia

【 摘 要 】

The biflavonoid 2",3"-dihydroochnaflavone, isolated from the Luxemburgia species (Ochanaceae), was treated with diazomethane to obtain the trimethyl-ether that was treated with pyridine/acetic anhydride to yield a new derivative, 5-acetil-7,4'-dimethyl-flavone-(3'→O-4'")-5"-acetil-7"-methyl-flavanone. The complete 1H and 13C NMR data assignments of the new derivative were made by the one- and two-dimensional spectral analysis.

【 授权许可】

Unknown