Design, synthesis and structure-activity relationship studies of novel 4,4-bis(trifluoromethyl)imidazolines as acyl-CoA: Cholesterol acyltransferase (ACAT) inhibitors and antihypercholesterolemic agents
作者:Hui-Yin Li、Indawati DeLucca、George A. Boswell、Jeffrey T. Billheimer、Spencer Drummond、Peter J. Gillies、Candy Robinson
DOI:10.1016/s0968-0896(97)00058-8
日期:1997.7
Novel 4,4-bis(trifluoromethyl)imidazolines have been found to be the potent acyl-CoA cholesterol acyltransferase (ACAT) inhibitors. ACAT is responsible for cholesterol esterification in the intestine, liver, and the arterial wall. These novel imidazolines also inhibit cholesterol ester formation in the macrophage. Several compounds have shown potent serum cholesterol-lowering activity in several animal
已经发现新型的4,4-双(三氟甲基)咪唑啉是有效的酰基-CoA胆固醇酰基转移酶(ACAT)抑制剂。ACAT负责肠,肝和动脉壁中的胆固醇酯化。这些新型咪唑啉还抑制巨噬细胞中胆固醇酯的形成。几种化合物在几种动物模型中均显示出有效的降低血清胆固醇的活性。2-苯基的对位取代对于体外和体内活性至关重要。具有2-苯基上的对氰基和4-烷基环己基酰胺作为侧链的5-位的4,4-双(三氟甲基)咪唑啉在该系列中具有最有效的抑制活性。基于生化研究,该系列在胆固醇与酶的结合方面起着竞争性抑制剂的作用,这与迄今为止发现的大多数ACAT抑制剂不同。初步的生物学研究得到X射线晶体结构,分子模型和结构-活性关系(SAR)研究的支持,表明该系列可能是胆固醇的模拟物。