A series of potent HIV-1 protease inhibitors, containing diverse piperidine analogues as the P2-ligands, 4-substituted phenylsulfonamides as the P2’-ligands and a hydrophobic cyclopropyl group as the P1’-ligand, were designed, synthesized and evaluated in this work. Among these twenty-four target compounds, many of them exhibited excellent activity against HIV-1 protease with half maximal inhibitory concentration (IC50) values below 20 nM. Particularly, compound 22a containing a (R)-piperidine-3-carboxamide as the P2-ligand and a 4-methoxylphenylsulfonamide as the P2’-ligand exhibited the most effective inhibitory activity with an IC50 value of 3.61 nM. More importantly, 22a exhibited activity with inhibition of 42% and 26% against wild-type and Darunavir (DRV)-resistant HIV-1 variants, respectively. Additionally, the molecular docking of 22a with HIV-1 protease provided insight into the ligand-binding properties, which was of great value for further study.
在本研究中,设计、合成了含有不同
哌啶类似物作为P2
配体、4-取代苯磺酰胺作为P2'
配体和疏
水环丙基作为P1'
配体的一系列强效HIV-1蛋白酶抑制剂,并对其进行了评价。在这24个目标化合物中,许多化合物展现出优异的HIV-1
蛋白酶抑制活性,半最大抑制浓度(IC50)值低于20 nM。特别是,含有(R)-
哌啶-3-羧酰胺作为P2
配体和4-
甲氧基苯磺酰胺作为P2'
配体的化合物22a表现出最强的抑制活性,IC50值为3.61 nM。更重要的是,22a对野生型和
达芦那韦(DRV)耐药的HIV-1变异株分别显示出42%和26%的抑制活性。此外,22a与HIV-1
蛋白酶的分子对接提供了关于
配体结合特性的见解,这对进一步研究具有重要价值。