An improved process for preparing a 4-mercaptopyrrolidine compound [I]: ##STR1## wherein R is H, lower alkyl or lower alkanoyl, R.sup.1 is H or SH-protecting group, and X is O or S, which comprises reacting halogenobutyric acid compound [VI], or a salt thereof, with amine compound [VII], or a salt thereof, and if necessary, followed by thiocarbonylating the product and/or removing the protecting group, said 4-mercaptopyrrolidine compound [I] being useful as intermediate for carbapenem antibacterial agents.
一种改进的制备4-巯基
吡咯烷化合物[I]的方法:##STR1##其中R为H、低烷基或低烷酰基,R.sup.1为H或SH保护基,X为O或S,包括将卤代
丁酸化合物[VI]或其盐与胺化合物[VII]或其盐反应,必要时随后进行
硫代羰基化产物和/或去除保护基,所述4-巯基
吡咯烷化合物[I]作为碳青霉烯类抗菌剂的中间体有用。