Unsymmetrical Cyclotriazadisulfonamide (CADA) Compounds as Human CD4 Receptor Down-Modulating Agents
作者:Violeta G. Demillo、Florian Goulinet-Mateo、Jessica Kim、Dominique Schols、Kurt Vermeire、Thomas W. Bell
DOI:10.1021/jm2002603
日期:2011.8.25
specific biomolecular target of CADA compounds is unknown, but previous studies led to an unsymmetrical binding model. To test this model, methods were developed for effective synthesis of diverse, unsymmetrical CADA compounds. A total of 13 new, unsymmetrical target compounds were synthesized, as well as one symmetrical analogue. The new compounds display a wide range of potency for CD4 down-modulation
环三氮杂二磺酰胺(CADA)通过特异下调细胞表面和细胞内CD4来抑制亚微摩尔水平的HIV。CADA化合物的特定生物分子靶标是未知的,但以前的研究导致了不对称的结合模型。为了测试该模型,开发了有效合成各种不对称CADA化合物的方法。总共合成了13种新的非对称目标化合物以及一种对称类似物。新化合物在CHO·CD4-YFP细胞中显示出广泛的CD4下调潜能。VGD020(IC 50 = 46 nM)是迄今为止发现的最有效的CADA化合物,而VGD029(IC 50= 730 nM)是最有效的荧光类似物。从不同取代基的加性或非加性能量效应的角度分析了结构活性关系。它们似乎与拉链类型的机理是一致的,在拉链类型的机理中,小分子与其蛋白质靶标之间的额外稳定化相互作用降低了熵的成本。