NOVEL CARBAPENEM DERIVATIVES

摘要

Novel carbapenem derivatives, represented by the following formula (I), having a substituted or unsubstituted imidazo¢5,1-b!thiazolium-6-ylmethyl group at the 2-position are disclosed. The compounds represented by the formula (I) have potent antibacterial activity against a wide spectrum of bacteria from Gram-positive bacteria to Gram-negative bacteria including Pseudomonas aeruginosa and, in addition, have potent antibacterial activity against various .beta.-lactamase-producing bacteria and MRSA and are very stable against DHP-1. (see formula I)