Pyrrolidine derivatives of the formula (1): ##STR1## wherein R is a protective group of the amino group, intermediates for constructing the 2-positioned side chain of antibacterial penem and carbapenem compounds, are prepared by allowing ##STR2## to react with active esterifying agents in the presence of a base, further allowing the product to react with hydrogen sulfide in the presence of a base and then treating the product with a base.
公式(1)的
吡咯烷衍
生物:##STR1## 其中R是
氨基保护基,用于构建抗菌青霉烯和碳青霉烯化合物的2位侧链的中间体,通过在碱的存在下让##STR2##与活性酯化试剂反应,进一步在碱的存在下让产物与
硫化氢反应,然后用碱处理产物来制备。