作者:Gordon L. Bundy、Donald T. Pals、Judy A. Lawson、Sally J. Couch、Michael F. Lipton、Michael A. Mauragis
DOI:10.1021/jm00170a036
日期:1990.8
solubility, all retained the potent renin inhibitory activity of U-71038 in vitro. The fact that good activity was maintained in these new analogues, which possess hydrophilicity and steric bulk considerably different from the parent compound, suggests that neither end of these molecules is critical for recognition and binding of the inhibitors by renin. These modified analogues were evaluated in a rat
先前报道的肾素抑制剂Boc-Pro-Phe-N(Me)His-Leu psi [CHOHCH2] Val-Ile-Amp(U-71038),可通过在任一端引入极性亲水基团来改变,例如N端为三(羟甲基)氨基甲烷(THAM)或葡糖胺脲基,C端为THAM酰胺或氨基甲基吡啶N-氧化物。这些修饰的类似物具有显着改善的水溶性,均在体外保留了U-71038的有效肾素抑制活性。这些新的类似物保持了良好的活性,它们的亲水性和空间体积与母体化合物大不相同,这一事实表明这些分子的任何一端都不对肾素对抑制剂的识别和结合至关重要。这些修饰的类似物在大鼠模型中进行了评估,并且一些药物在口服和静脉内给药后均表现出降压活性,其强度和持续时间要长于等摩尔剂量的U-71038。此外,与U-71038不同,这些类似物的口服活性不依赖于柠檬酸介质中的给药。