申请人:Merck, Sharp & Dohme, Ltd.
公开号:US05698573A1
公开(公告)日:1997-12-16
A class of imidazolone and oxazolone derivatives of Structure I, ##STR1## wherein X represents oxygen or N--R.sup.1 ; Q represents a substituted five-, six- or seven-membered monocyclic heteroaliphatic ring which contains one nitrogen atom as the sole heteroatom and is linked to the imidazolone or oxazolone ring via a carbon atom; R.sup.1 represents hydrogen or C.sub.1-6 alkyl; and one of R.sup.2 and R.sup.3 represents hydrogen or C.sub.1-6 alkyl and the other of R.sup.2 and R.sup.3 represents cycloalkyl or a group of formula (i), (ii) or (iii): ##STR2## in which Z represents oxygen, sulphur or NH; R.sup.4, R.sup.5 and R.sup.6 independently represent hydrogen, a hydrocarbon group or a heterocyclic group wherein the hydrocarbon group and heterocyclic group are as defined in the specification; or a pharmaceutically acceptable salt or prodrug thereof, which are ligands for dopamine receptor subtypes within the brain and are therefore of use in the treatment and/or prevention of disorders of the dopamine system, such as schizophrenia.
I. 结构的咪唑酮和噁唑酮衍生物类,其中X代表氧或N--R.sup.1;Q代表一种取代的五、六或七元杂环脂肪环,其中含有一个氮原子作为唯一杂原子,并通过一个碳原子连接到咪唑酮或噁唑酮环上;R.sup.1代表氢或C.sub.1-6烷基;R.sup.2和R.sup.3中的一个代表氢或C.sub.1-6烷基,另一个代表环烷基或式(i)、(ii)或(iii)的基团:##STR2## 其中Z代表氧、硫或NH;R.sup.4、R.sup.5和R.sup.6独立地代表氢、烃基或杂环基,其中烃基和杂环基如规范中定义;或其药学上可接受的盐或前药,它们是大脑内多巴胺受体亚型的配体,因此可用于治疗和/或预防多巴胺系统紊乱,如精神分裂症。