Novel Histamine H<sub>3</sub>-Receptor Antagonists with Carbonyl-Substituted 4-(3-(Phenoxy)propyl)-1<i>H</i>-imidazole Structures like Ciproxifan and Related Compounds
作者:Holger Stark、Bassem Sadek、Michael Krause、Annette Hüls、Xavier Ligneau、C. Robin Ganellin、Jean-Michel Arrang、Jean-Charles Schwartz、Walter Schunack
DOI:10.1021/jm000966l
日期:2000.10.1
Novel histamine H(3)-receptor antagonists possessing a 4-(3-(phenoxy)propyl)-1H-imidazole structure generally substituted in the para-position of the phenyl ring have been synthesized according to Mitsunobu or S(N)Ar reactions. With in vitro and in vivo screening for H(3)-receptor antagonist potency, the carbonyl-substituted derivatives proved to be highly active compounds. A number of compounds showed
根据Mitsunobu或S(N)Ar反应合成了具有4-(3-(苯氧基)丙基)-1H-咪唑结构的新型组胺H(3)-受体拮抗剂,该结构通常在苯环的对位取代。随着对H(3)受体拮抗剂效能的体外和体内筛选,羰基取代的衍生物被证明是高度活性的化合物。许多化合物在亚纳摩尔浓度范围内均显示出体外亲和力,在口服给药后,4-己酰基(10)和4-乙酰基-3-甲基(29)取代的衍生物在体内的拮抗药效力约为0.1 mg / kg。还测试了许多proxifans在其他组胺受体亚型上的亲和力,从而证明了其明显的H(3)-受体亚型选择性。由于环丙基酮衍生物14(ciproxifan)在体外具有很高的亲和力,并且在体内具有很高的效力,因此选择将其用于猴子的进一步研究。它显示出良好的口服吸收和持久的剂量依赖性血浆水平,使其成为药物开发的有希望的化合物。