87339-67-1Relevant academic research and scientific papers
Synthesis of novel 3-alkyl-3′,4′,5,7-tetrahydroxyflavones
Seixas, Raquel S. G. R.,Pinto, Diana C. G. A.,Silva, Artur M. S.,Cavaleiro, Jos A. S.
, p. 718 - 724 (2008/12/22)
Novel 3-alkyl-3′,4′,5,7-tetrahydroxyflavones have been prepared. The synthetic strategy involves the preparation of 1-(2-hydroxy-4,6-dimethoxyphenyl)alkan-1-ones from the FriedelCrafts acylation of phloroglucinol followed by methylation. These key compounds were submitted to the three-step BakerVenkataraman method, giving the 3-alkyl-3′,4′, 5,7-tetramethoxyflavones, which were demethylated with boron tribromide. CSIRO 2008.
TWO 3-C-METHYLFLAVONE GLYCOSIDES FROM EUGENIA KURZII
Painuly, P.,Tandon, J. S.
, p. 243 - 246 (2007/10/02)
In addition to sitosterol glucoside and gallic acid, two new flavone glycosides have been isolated from Eugenia kurzii (aerial parts) and characterized as 3-C-methylapigenin 5-O-rhamnoside and 3-C-methylluteolin 5-O-rhamnoside by spectral analysis and chemical conversion. 7,4'-Dimethyl-3-C-methylapigenin and 7,3',4'-trimethyl-3-C-methylluteolin were synthesized by modified Baker-Venkataraman transformations and compared with the methyl ethers of the natural aglycones.Key Word - Eugenia kurzii; Myrtaceae; flavonoids; 3-C-methylapigenin 5-O-rhamnoside; 3-C-methylluteolin 5-O-rhamnoside
