Design and synthesis of new 2,4,5-triarylimidazole derivatives as selective cyclooxygenase (COX-2) inhibitors
作者:A. Zarghi、S. Arfaei、R. Ghodsi
DOI:10.1007/s00044-011-9710-5
日期:2012.8
imidazole (11f) was identified as a selective COX-2 inhibitor (COX-2 IC50 = 0.15 μM; selectivity index = 75) that was less potent than the reference drug celecoxib (COX-2 IC50 = 0.06 μM; SI = 405). A molecular modeling study where 11f was docked in the binding site of COX-2 showed that the methylsulfonyl pharmacophore group is oriented in the vicinity of the COX-2 secondary pocket (Arg513, Phe518, Gly519
合成了一组新的具有甲基磺酰基药效基团的2,4,5-三芳基咪唑衍生物,并评估了其生物活性对环氧合酶-2(COX-2)的抑制活性。通过改变C-2苯环对位的取代基来确定体外COX-1 / COX-2的构效关系。在2,4,5-三芳基咪唑中,2-(4-羟基苯基)-4-(4-甲基磺酰基苯基)-5-苯基-1 H咪唑(11f)被鉴定为选择性COX-2抑制剂(COX-2 IC50 = 0.15μM;选择性指数= 75),其效力低于参考药物塞来昔布(COX-2 IC50 = 0.06μM; SI = 405)。分子建模研究,其中11f端接于COX-2的结合位点的Aβ显示甲基磺酰基药效团基团定向在COX-2二级口袋(Arg 513,Phe 518,Gly 519和Val 523)附近。获得的结构活性数据表明,COX-1 / COX-2抑制作用对C-2苯基取代基的性质敏感。