Norpiperidine Imidazoazepines as a New Class of Potent, Selective, and Nonsedative H<sub>1</sub> Antihistamines
作者:Frans Janssens、Jos Leenaerts、Gaston Diels、Benoît De Boeck、Anton Megens、Xavier Langlois、Koen van Rossem、Johan Beetens、Marcel Borgers
DOI:10.1021/jm049495j
日期:2005.3.1
Clinical doses of available H(1) antihistamines are limited mainly by sedative side effects. However, higher doses are often required to obtain optimal therapeutic activity, especially in dermatology. We report the synthesis of three norpiperidine imidazoazepines representative of a new class of selective and nonsedating H(1) antihistamines. The compounds were at least as potent as cetirizine and loratadine
可用的H(1)抗组胺药的临床剂量主要受镇静性副作用的限制。但是,通常需要更高的剂量才能获得最佳的治疗活性,尤其是在皮肤病学中。我们报告了三类新的选择性和非镇静H(1)抗组胺药的代表的norpiperidine咪唑并ze庚因的合成。通过H(1)受体结合亲和力,分别针对大鼠和豚鼠的化合物48/80和组胺诱导的致死性以及大鼠的皮肤反应测试,该化合物的效力至少与西替利嗪和氯雷他定一样强,豚鼠和狗。该化合物,尤其是3a,比参考化合物更不容易渗透大脑并占据中央H(1)受体,表明没有镇静性副作用。体外和体内心血管安全性测试显示3a没有延长心室复极化或诱发心律不齐的内在潜力。已经选择化合物3a用于进一步的临床开发,主要用于皮肤病学中。