Compounds useful for treating diseases of the central or peripheral nervous system in mammals have formulae I-XII ##STR1## wherein ring A or A' together with the spiro-carbon atom constitutes a bridged or unbridged ring containing one or two ring nitrogen atoms; and the other symbols have specified values, subject to certain conditions.
用于治疗哺乳动物中枢神经系统或外周神经系统疾病的化合物具有以下
化学式I-XII ##STR1## 其中环A或A'与螺碳原子一起构成一个含有一个或两个环氮原子的桥接环或非桥接环;其他符号具有特定值,受特定条件约束。