申请人:Fisons Corporation
公开号:US05109017A1
公开(公告)日:1992-04-28
Compounds of the formula I, ##STR1## in which: R.sub.1 represents hydrogen or C.sub.1-6 alkyl, R.sub.2 represents hydrogen, C.sub.1-6 alkyl, C.sub.3-6 alkenyl, C.sub.3-6 alkynyl or C.sub.3-6 cycloalkyl, R.sub.3 represents one or more radicals selected from hydrogen, hydroxy, C.sub.1-6 alkyl, C.sub.1-6 alkoxy, halogen, trifluoromethyl, amino, lower alkylamino or dilower alkylamino, R.sub.4 represents one or more radicals selected from hydrogen or C.sub.1-6 alkyl, A represents an alpha-amino acid acyl group or an alkoxycarbonyl group, and pharmaceutically acceptable salts thereof are useful as pharmaceuticals, in particular they possess N-methyl-(d)-aspartate (NMDA) blocking properties and are useful in the treatment and/or prevention of neurological disorders such as stroke, cerebral ischaemia, cerebral palsy, hypoglycaemia, epilepsy, Alzheimer's disease, Huntington's chorea, Olivo-ponto-cerebellar atrophy, perinatal asphyxia and anoxia.
化合物的化学式I,其中:R.sub.1代表氢或C.sub.1-6烷基,R.sub.2代表氢,C.sub.1-6烷基,C.sub.3-6烯基,C.sub.3-6炔基或C.sub.3-6环烷基,R.sub.3代表氢,羟基,C.sub.1-6烷基,C.sub.1-6烷氧基,卤素,三氟甲基,氨基,低烷基氨基或二低烷基氨基中选择的一个或多个基团,R.sub.4代表氢或C.sub.1-6烷基中选择的一个或多个基团,A代表α-氨基酸酰基团或烷氧羰基团,其药学上可接受的盐对药物具有用处,特别是它们具有N-甲基-(d)-天冬氨酸(NMDA)阻断特性,并且在治疗和/或预防中枢神经系统疾病,如中风,脑缺血,脑瘫,低血糖,癫痫,阿尔茨海默病,亨廷顿舞蹈症,奥利沃-庞托-小脑萎缩症,围产期窒息和缺氧方面具有用处。