Pyrrolidine derivatives of the formula ##STR1## wherein R.sup.1, R.sup.2, R.sup.3 and R.sup.4 are as hereinafter described, prepared inter alia from the corresponding pyrrolines, are described. The compounds are useful as analgesic agents.
本文描述了公式##STR1##中R.sup.1,R.sup.2,R.sup.3和R.sup.4如下所述的
吡咯烷衍
生物,其中从相应的
吡咯烷制备而来。这些化合物可用作镇痛剂。