Inhibitors of Acyl-CoA:Cholesterol O-Acyl Transferase (ACAT) as Hypocholesterolemic Agents. 8. Incorporation of Amide or Amine Functionalities into a Series of Disubstituted Ureas and Carbamates. Effects on ACAT Inhibition in vitro and Efficacy in vivo
作者:Patrick M. O'Brien、Drago R. Sliskovic、C. John Blankley、Bruce. D Roth、Michael W. Wilson、Katherine L. Hamelehle、Brian R. Krause、Richard L. Stanfield
DOI:10.1021/jm00038a010
日期:1994.6
A series of disubstituted ureas containing amide or amine groups was prepared and evaluated for their ability to inhibit acyl-CoA:cholesterol O-acyl transferase in vitro and to lower plasma total cholesterol in a variety of cholesterol-fed rat models in vivo. The presence of polar or ionizable functionalities within this class of compounds may impart greater aqueous solubility to those compounds and
制备了一系列含有酰胺基或胺基的双取代脲,并评估了它们在体外抑制酰基-CoA:胆固醇O-酰基转移酶的能力以及在体内各种由胆固醇喂养的大鼠模型中降低血浆总胆固醇的能力。这类化合物中极性或可电离官能团的存在可以赋予这些化合物更大的水溶性,从而改善向肠道小肠细胞内酶位置的转运。即使是在水性媒介物中给药,这类化合物在慢性胆固醇喂养的高胆固醇血症大鼠模型中也能降低胆固醇。通常,在高胆固醇血症的急性大鼠模型中,含胺化合物比酰胺更有效和有效。进一步的结构活性关系研究表明,酰胺/胺基团的优选位置是尿素部分的β,而不是α,并且在该系列中,要获得良好的体外效果,必须存在仲胺(或酰胺)质子效力。这些化合物之一9n(-)在水性介质中给药给预先建立的高胆固醇血症的大鼠时,可降低血浆总胆固醇(-47%)和提高高密度脂蛋白胆固醇(+ 256%)。