Discovery of novel, potent and low-toxicity angiotensin II receptor type 1 (AT1) blockers: Design, synthesis and biological evaluation of 6-substituted aminocarbonyl benzimidazoles with a chiral center
作者:Xiao-Feng Han、Xing He、Miao Wang、Di Xu、Li-Ping Hao、Ai-Hua Liang、Jun Zhang、Zhi-Ming Zhou
DOI:10.1016/j.ejmech.2015.09.010
日期:2015.10
Novel angiotensin II receptor type 1 (AT1) blockers bearing 6-substituted carbamoyl benzimidazoles with a chiral center were designed and synthesized as the first step to develop new antihypertensive agents and understand their pharmacodynamic and pharmacokinetic properties. The newly synthesized compounds were tested for their potential ability to displace [(125)I] Sar(1) Ile(8)-Ang II, which was
设计并合成了带有手性中心的6-取代氨基甲酰基苯并咪唑的新型血管紧张素II受体1型(AT1)阻滞剂,作为开发新的抗高血压药并了解其药效和药代动力学特性的第一步。测试了新合成的化合物置换[[125] I] Sar(1)Ile(8)-Ang II的潜在能力,该化合物特异结合至人AT1受体。放射性配体结合测定揭示了正在研究的几种化合物的纳摩尔亲和力。九种配体的IC50值高于Losartan。对自发性高血压大鼠血压降低的筛查显示,化合物8S(IC₅₀= 5.0 nM)与氯沙坦是等效的,而化合物13R(IC₅₀= 7.3 nM),化合物14R(IC₅₀= 6.3 nM)和14S(IC₅₀= 3)。5 nM)略微领先于氯沙坦,最显着的活性由化合物8R证明(IC 50 = 1.1 nM)。根据血浆分析,毒理学研究和慢性口服试验,鉴定出候选8R具有出色的抗高血压功效和较低的毒性。最后,在对接研究中,化合物8