Compounds are disclosed of formula (I) ##STR1## wherein R.sub.1 represents --COR.sub.4, --CO.sub.2 R.sub.4 or --COCO.sub.2 R.sub.4 (where R.sub.4 represents a hydrogen atom or an unsubstituted or substituted C.sub.1-10 hydrocarbon moiety); R.sub.2 and R.sub.3 are the same or different and are C.sub.1-6 alkyl or C.sub.3-6 alkenyl; or --NR.sub.2 R.sub.3 forms a 5-membered (optionally containing an oxygen atom adjacent to the nitrogen) or 6-membered ring, which ring optionally contains one unit of unsaturation and which is unsubstituted or substituted by optionally substituted methylidene, --COR.sub.5 (where R.sub.5 represents C.sub.1-6 alkyl, --OR.sub.6 or --NHR.sub.6 and R.sub.6 represents hydrogen, C.sub.1-6 alkyl, aryl, or ar(C.sub.1-6)alkyl, or N.dbd.NOR.sub.7 (where R.sub.7 represents C.sub.1-6 alkyl); X represents a direct bond, --CH.sub.2 -- or --CH.sub.2 O--; Ar represents a substituted phenyl moiety; and physiologically acceptable salts thereof. The compounds are indicated as useful in the treatment of pain and cerebral ischaemia. Processes and intermediates for their preparation and pharmaceutical compositions containing them are also disclosed.
公开了式(I)的化合物:##
STR1## 其中R.sub.1代表--COR.sub.4,--CO.sub.2 R.sub.4或--COCO.sub.2 R.sub.4(其中R.sub.4代表
氢原子或未取代或取代的C.sub.1-10烃基); R.sub.2和R.sub.3相同或不同,为C.sub.1-6烷基或C.sub.3-6
烯基; 或--NR.sub.2 R.sub.3形成5-成员(可选包含
氮原子相邻的
氧原子)或6-成员环,该环可选包含一种不饱和单元,且未取代或取代为可选取代的
甲基亚
甲基,--COR.sub.5(其中R.sub.5代表C.sub.1-6烷基,--OR.sub.6或--NHR.sub.6,R.sub.6代表
氢,C.sub.1-6烷基,芳基或ar(C.sub.1-6)烷基,或N.dbd.NOR.sub.7(其中R.sub.7代表C.sub.1-6烷基); X代表直接键,--CH.sub.2--或--CH.sub.2 O--; Ar代表取代
苯基基团;以及其生理上可接受的盐。这些化合物被指示用于疼痛和脑缺血的治疗。还公开了它们的制备过程和
中间体以及含有它们的制药组合物。