Synthesis and anti-inflammatory in vitro, in silico, and in vivo studies of flavone analogues
摘要:
Chrysin and 7-hydroxy flavone were prepared by Baker-Venkatraman rearrangement followed by esterification at 7th position and replacement of ester with acetamide linking to different heterocyclic moieties synthesized 13a-g and 14a-g series of flavones analogues. These were screened against COX-2 and COX-1 enzymes for inhibition by in vitro assay and COX-2 for in silico docking studies. The compound 14a was found to be most active with IC50 of 3.11 A mu M concentration, with highest binding energy of -12.4 kcal/mole and 77.2 and 80.5 % inhibition at 3 and 5 h post-carrageenan induced in paw oedema.
developed. 1-(2-Hydroxyphenyl)-3-phenylpropane-1,3-diones were fluorinated using selectfluor with a small amount of CH3CN at room temperature, followed by cyclization and dehydration in the presence of a trace amount of conc. H2SO4 to provide 3-fluoroflavones. The desired 3-fluoroflavone analogues were obtained in moderate to excellent yields. This strategy tolerated a wide range of functional groups and
开发了一种简洁高效的一锅法合成3-氟黄酮。在室温下,使用带有少量CH 3 CN的selectfluor对1-(2-羟基苯基)-3-苯基丙烷-1,3-二酮进行氟化,然后在痕量浓盐酸存在下进行环化和脱水。H 2 SO 4提供3-氟黄酮。以中等至优异的产率获得了所需的3-氟黄酮类似物。该策略可耐受各种官能团,不需要复杂的仪器或繁琐的底物制备。
Mild and efficient organocatalytic method for the synthesis of flavones
作者:Filip Stanek、Maciej Stodulski
DOI:10.1016/j.tetlet.2016.07.042
日期:2016.8
A convenient and efficient organocatalytic procedure for the selective cyclization of 1,3-diketones to give aromatic substituted 4H-chromen-4-ones under mild reaction conditions using N-triflyl phosphoramide is described. Application of the described conditions is presented in a formal synthesis of (S)-flavanone.
One-Pot Synthesis of Benzopyran-4-ones with Cancer Preventive and Therapeutic Potential
作者:Oualid Talhi、Lidia Brodziak-Jarosz、Jana Panning、Barbora Orlikova、Clemens Zwergel、Tzvetomira Tzanova、Stéphanie Philippot、Diana C. G. A. Pinto、Filipe A. Almeida Paz、Clarissa Gerhäuser、Tobias P. Dick、Claus Jacob、Marc Diederich、Denyse Bagrel、Gilbert Kirsch、Artur M. S. Silva
DOI:10.1002/ejoc.201501278
日期:2016.2
A one-potsynthesis of novel benzopyran-4-ones is described. In a tandemreaction, organobase-catalysed Michaeladdition of (RCOCH2COR2)-C-1 on chromone-3-carboxylic acid led to decarboxylation and pyran-4-one ring opening of the latter. This was followed by chromone- and/or chromanone ring closure of the resulting Michael adducts when R-1 is an ortho-hydroxyaryl group. Antioxidant testing of 14 derivatives
Synthesis and cytotoxicity of novel chrysin derivatives
作者:Kun Hu、Wei Wang、Hong Cheng、ShaSha Pan、Jie Ren
DOI:10.1007/s00044-010-9395-1
日期:2011.9
A series of chrysin derivatives 8a-8v were prepared and tested in vitro against HCT-116 (human colon cancer cell line), Hela (human cervical carcinoma cell line), DU-145 (human prostate cell line), K562 (human leukemia cell line), and SGC-7901 (human gastric cancer cell line). The chemical structures of these compounds were confirmed by means of MS, IR, H-1 NMR, C-13 NMR, and elemental analysis. Among these derivatives, 7-(2-(piperazin-1-yl)ethoxy)-5-hydroxy-2-phenyl-4H-chromen-4-one, 8n, had the strongest activity against HCT-116, Hela, DU-145, K562, and SGC-7901 cells.
58. Synthetical experiments in the chromone group. Part XVIII. Demethylation with aluminium chloride