Design and Synthesis of Some 5-Substituted-2-(4-(azido or methylsulfonyl) phenyl)-1H-indole Derivatives as Selective Cyclooxygenase (COX-2) Inhibitors
作者:Afshin Zarghi
DOI:10.3797/scipharm.0805-20
日期:——
A group of 5-substituted-2-(4-azido or (methylsulfonyl)phenyl)-1H-indoles were designed and synthesized as selective cyclooxygenase (COX-2) inhibitors. In vitro COX-1 and COX-2 isozyme inhibition studies were carried out to investigate the effect of different substituents (H, F, Cl, Me, OMe) at C-5 position and different pharmacophore groups (azido or methylsulfonyl) at para position of phenyl ring at C-2 position of the 1H-indole ring on COX-2 selectivity and potency. The structure-activity relationship study of these compounds indicated that the introduction of a methoxy substituent at C-5 position and 4-(methylsulfonyl) phenyl group at C-2 position of the 1H-indole ring (compound 4e) had the best COX-2 selectivity (S.I= 291.2). A molecular modeling study where 4e was docked in the binding site of COX-2 showed that the methylsulfonyl group at para position of phenyl ring is oriented in the vicinity of the COX-2 secondary pocket.
设计并合成了一组 5-取代-2-(4-叠氮基或(甲基磺酰基)苯基)-1H-吲哚作为选择性环氧合酶 (COX-2) 抑制剂。进行体外COX-1和COX-2同工酶抑制研究,以研究C-5位不同取代基(H、F、Cl、Me、OMe)和对位不同药效基团(叠氮基或甲磺酰基)的影响1H-吲哚环 C-2 位上的苯环对 COX-2 选择性和效力的影响。这些化合物的构效关系研究表明,在1H-吲哚环的C-5位引入甲氧基取代基和在1H-吲哚环的C-2位引入4-(甲基磺酰基)苯基(化合物4e)具有最佳的COX- 2 选择性(S.I=291.2)。 4e 对接在 COX-2 结合位点的分子模型研究表明,苯环对位的甲基磺酰基定向在 COX-2 二级口袋附近。