摘要 |
A process for the preparation of a carbapenem antibacterial compound of the following formula (4) having a 1-alkylpyrrolidine structure or a salt thereof, a useful synthetic intermediate of the following formula (1) or a salt thereof, and a process for the preparation thereof: wherein R<SUP>1 </SUP>represents a C<SUB>1</SUB>-C<SUB>3 </SUB>alkyl group, R<SUP>2 </SUP>and R<SUP>3 </SUP>each independently represents a hydrogen atom or an organic residue or R<SUP>2 </SUP>and R<SUP>3 </SUP>together with the nitrogen atom they are attached to form a ring.
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