Synthesis and Structure−Activity Relationship of a New Series of Potent AT<sub>1</sub> Selective Angiotensin II Receptor Antagonists: 5-(Biphenyl-4-ylmethyl)pyrazoles
作者:Carmen Almansa、Luis A. Gómez、Fernando L. Cavalcanti、Alberto F. de Arriba、Julián García-Rafanell、Javier Forn
DOI:10.1021/jm9604383
日期:1997.2.1
The synthesis and pharmacological activity of a new series of 5-(biphenyl-4-ylmethyl)pyrazoles as potent angiotensin II antagonists both in vitro (binding of [3H]AII) and in vivo (iv, inhibition of AII-induced increase in blood pressure, pithed rats; po, furosemide-treated sodium-depleted rats) are reported. The various substituents of the pyrazole ring have been modified taking into account the receptor's
一系列新的5-(联苯-4-基甲基)吡唑类化合物在体外(与[3H] AII结合)和体内(iv,抑制AII诱导的血液增加)均作为有效的血管紧张素II拮抗剂的合成和药理活性压力,去髓大鼠;口服速尿治疗的贫钠大鼠)。考虑到从相关的结构-活性关系研究得出的受体要求,对吡唑环的各种取代基进行了修饰。已显示在位置1处的丙基或丁基以及在位置4处的羧酸基对于高亲和力是必不可少的。3位的不同基团(H,小烷基,苯基,苄基)提供了良好的结合亲和力,但口服活性却具有很高的区分度:大体积的烷基具有最高的效价。在联苯部分测试的酸性等排体中,四唑基被证明是最好的。化合物14n(3-叔丁基-1-丙基-5-[[2'-(1H-四唑-5-基)-1,1'-联苯-4-基]甲基] -1H-吡唑-4-羧酸(UR-7280)在体外(IC50 = 3 nM)和体内(iv,0.3 mg / kg时血压降低61.2 +/- 10%; po,30