Disclosed are the novel compounds of formula I ##STR1## wherein ring A is unsubstituted or substituted by one or two identical or different substituents selected from lower alkyl, halogen, trifluoromethyl, lower alkoxy, hydroxy and acyloxy; or ring A is substituted on adjacent carbon atoms by lower alkylenedioxy; R represents hydrogen, halogen or lower alkyl; and Ar represents carbocyclic aryl or heteroaryl; which are useful as benzodiazepine receptor agonists, processes for preparing the same, pharmaceutical compositions comprising said compounds and methods of treating nervous system disorders, such as anxiety and epilepsy, by administration of said compounds and pharmaceutical compositions to mammals.
本发明涉及一种新型化合物,其
化学式为I ##STR1## 其中环A未取代或被一个或两个相同或不同的取代基取代,所述取代基选自低烷基,卤素,三
氟甲基,低烷氧基,羟基和酰氧基;或环A在相邻的碳原子上被低烷基二氧取代;R代表氢,卤素或低烷基;Ar代表碳环芳基或杂环芳基;所述化合物作为苯二氮平受体激动剂有用,制备该化合物的方法,包括该化合物的制药组合物以及通过将该化合物和制药组合物用于哺乳动物治疗神经系统疾病,如焦虑和癫痫等方法。