work, novel steroid-based histamine H3 receptor antagonists were identified and characterized. Using an ‘amine-to-amide’ modification strategy at position 17, in vitro and in vivo potent monoamino steroid derivatives were found during the lead optimization. Usage of the non-basic amide moiety resulted in beneficial effects both in activity and selectivity. The 15α-carboxamido derivative 10 was not only
为了进一步进行我们先前的工作,鉴定并表征了新型的基于类
固醇的
组胺H 3受体拮抗剂。在前导优化过程中,使用第17位的“胺至酰胺”修饰策略,发现了体外和体内有效的单
氨基类
固醇衍
生物。非碱性酰胺部分的使用在活性和选择性上均产生有益的作用。15α-羧酰胺基衍
生物10不仅对人和大鼠H 3受体具有高活性,而且对大鼠毒蕈碱受体的活性可忽略不计。此外,它被证明在人和大鼠微粒体中相当稳定,并在体内显示出显着的稳定性。药效学大鼠血球成因试验和迷宫
水认知模型中的效力。基于所有这些考虑,化合物10被指定为临床前候选药物。