摘要 |
A carbapenem compound represented by a following formula [1], wherein R<SUP>1 </SUP>is C<SUB>1 </SUB>to C<SUB>3 </SUB>alkyl or C<SUB>1 </SUB>to C<SUB>3 </SUB>alkyl substituted by hydroxy. R is hydrogen atom or a group which regenerates a carboxyl group by hydrolysis in a living body, A is a following formula [1a], wherein E is a 5 to 7 membered cyclic ring optionally containing 1 to 3 hetero atoms (excluding benzene ring) which forms a bicyclic ring in corporation with the benzene ring, Y is hydrogen atom, C<SUB>1 </SUB>to C<SUB>4 </SUB>alkyl, C<SUB>1 </SUB>to C<SUB>4 </SUB>alkoxy, trifluoromethoxy, halogen atom or cyano group, or its pharmaceutically acceptable salt.
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