Non-peptide angiotensin II receptor antagonists. 1. Design, synthesis, and biological activity of N-substituted indoles and dihydroindoles
作者:Daljit S. Dhanoa、Scott W. Bagley、Raymond S. L. Chang、Victor J. Lotti、Tsing Bau Chen、Salah D. Kivlighn、Gloria J. Zingaro、Peter K. S. Siegl、Arthur A. Patchett、William J. Greenlee
DOI:10.1021/jm00078a013
日期:1993.12
series of compounds derived from N-alkylation of dihydroindole 25. A new class of highly potent (14b, AT1 IC50 = 0.8 nM; 24, AT1 IC50 = 1 nM) AT1-selective non-peptide AII receptor antagonists derived from N-substituted indoles and dihydroindoles is disclosed. Tetrazole 24 of the N-alkylated indole series displayed good in vivo activity by blocking the AII-induced pressor response for 5.5 h after intravenous
合成了一系列N-酰基化的吲哚(12-18),N-烷基化的吲哚(19-24),N-酰基化的二氢吲哚(26-30)和N-烷基化的二氢吲哚(31-34)并在体外AT1(兔主动脉)和AT2(大鼠中脑)结合测定。羧酸3-[[[N-(2-羧基-3,6-二氯苯甲酰基)-5-吲哚基]甲基] -5,7-二甲基-2--2-乙基-3H-咪唑并[4,5-b]吡啶(14b)被发现是N-酰化吲哚系列中最有效的AT1拮抗剂(IC50 = 0.8 nM),并且其效能比未取代的母体衍生物14a(AT1 IC50 = 20 nM)和22-效力比相应的二氢吲哚类似物27(AT1 IC50 = 18 nM)高1倍。用16中的生物等排四唑代替14a的末端羧基(COOH)(AT1 IC50 = 5 nM,AT2 IC50 = 130 nM)不仅使AT1效能提高了4倍,而且使AT2活性提高了50倍。在N-烷基化的吲哚系列中,四唑3-[