Hexahydropyrrolizines of the formula (I): ##STR1## wherein A is a 3-7 carbon or hetero-containing ring, R.sup.1 is a substituent, and x is 0-3. Also, pharmaceutical compositions for treating pain and methods for synthesis and use as well as novel intermediates in the synthesis.
式(I)的六氢
吡咯啉:##STR1## 其中A是3-7碳或含杂原子的环,R.sup.1是取代基,x为0-3。此外,还提供用于治疗疼痛的药物组合物,以及用于合成和使用的新型中间体。