A compound of formula (I): ##STR1## wherein R.sub.1, R.sub.2, R.sub.3, R.sub.4, X--Y, A, Z and Z' are as defined in the description, in the form of the cis or trans isomers each in racemic or optically active form, and acid addition salts thereof, and medicinal products containing the same are useful in the treatment of diseases of the central nervous system or of manifestations of pain.
化合物的
化学式为(I):##STR1## 其中R.sub.1,R.sub.2,R.sub.3,R.sub.4,X-Y,A,Z和Z'的定义如所述,在顺式或反式异构体中,每种均为外消旋或光学活性形式,并且它们的酸加成盐及含有这些化合物的药物制剂在治疗中枢神经系统疾病或疼痛表现方面有用。