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.
公式(I)的化合物已被披露,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
碳氢基);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形成一个5-成员(可选地在
氮原子旁边含有
氧原子)或6-成员环,该环可选地包含一个不饱和单位,未取代或由可选取代的
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,或芳基(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;及其生理上可接受的盐。这些化合物被指出在疼痛和脑缺血的治疗中有用。还披露了其制备的过程和
中间体以及含有它们的药物组合物。