An objective of the present invention is to provide carbapenem derivatives which have potent antibiotic activity against MRSA, PRSP, Influenzavirus, and &bgr;-lactamase-producing bacteria and are stable against DHP-1. The compounds according to the present invention are compounds represented by formula (I) or pharmaceutically acceptable salts thereof:
1
wherein R
1
represents H or methyl; R
2
and R
3
represent H, a halogen atom, alkyl or the like; and R
4
represents substituted lower alkylthio or the like.
本发明的目的在于提供对M
RSA、PR
SP、流感病毒和β-内
酰胺酶产生菌具有强大抗菌活性的
碳青霉
烯衍
生物,并且对
DHP-1稳定。根据本发明的化合物是由公式(I)表示的化合物或其药物可接受的盐:
1
其中R
1
代表H或
甲基;R
2
和R
3
代表H、卤素原子、烷基等;R
4
代表取代的下级烷基
硫或类似物。