Synthesis and anti-inflammatory activity of some new thiadiazole linked pyrazole benzene sulphonamides as cyclooxygenase inhibitors
作者:Jahangir Alam、Ozair Alam、Rahmat Ali、Mohd Naim、Suroor Khan
DOI:10.13005/ojc/310404
日期:2015.12.30
A new series of thiadiazole linked pyrazole benzenesulfonamide derivatives were synthesized by the condensation of aldehydic pyrazole with aryl substituted thiadiazole amine followed by Schiff base reaction. The synthesized compounds (6a-o) were characterized by IR, NMR, and Mass spectral data, further evaluated their in-vivo anti-inflammatory, analgesic and in-vitro COX-II inhibition assay. The compounds 6b and 6m showed most significant in-vivo anti-inflammatory with 72.33 and 71.17% inhibition along analgesic activity having 67.89% and 71.37 % respectively. Their selectivity against COX-II enzyme with selectivity index 67.81 and 66.38 was established for 6b and 6m, which is compared with Celecoxib. During the gastric ulceration study, selected compounds couldn’t observed any ulcerogenic effect on gastric mucosa.The in-silico pharmacokinetic profile and molecular docking study exposed very good binding affinity towards the cycloxygenase (COX-II) enzyme (PDB Id: 3PGH), therefore the compounds 6b and 6m are used as promising lead candidates for the support of drug development.
通过醛基吡唑与芳基取代的噻二唑胺缩合,随后进行希夫碱反应,合成了一系列新的噻二唑联吡唑苯磺酰胺衍生物。合成的化合物(6a-o)通过IR、NMR和质谱数据进行表征,并进一步评估了其在体内的抗炎、镇痛作用及体外COX-II抑制活性。化合物6b和6m显示出最显著的体内抗炎活性,抑制率分别为72.33%和71.17%,同时具有镇痛活性,分别为67.89%和71.37%。它们对COX-II酶的选择性指数分别为67.81和66.38,与塞来昔布相比。在胃溃疡研究中,选定的化合物未观察到对胃黏膜的溃疡形成作用。通过计算机模拟的药代动力学特征和分子对接研究显示,这些化合物对环氧合酶(COX-II)酶(PDB ID:3PGH)具有非常好的结合亲和力,因此,化合物6b和6m被视为有前途的先导候选物,用于支持药物开发。