A compound represented by the following formula (9):
wherein R5 represents an amino or protected amino group and Y represents a hydrogen atom, a lower alkyl group, a halogen atom or a nitro group, or a salt thereof.
7-acyl-3-(substituted carbamoyloxy) cephem compounds, use thereof and process for their preparation
申请人:Eisai Co., Ltd.
公开号:EP1074554A2
公开(公告)日:2001-02-07
A compound represented by the following formula (1a):
a process for the preparation thereof, an antibacterial composition comprising the same and the use thereof for the preparation of a medicament and for the synthesis of related cephem compounds.
An improved method for synthesis of cefuroxime axetil of formula (I) in high purity substantially free of the corresponding 2-cephem(&Dgr;
2
)-ester of formula (II) and other impurities. The compound produced is valuable as a prodrug ester of the corresponding cephalosporin-4-carboxylic acid derivative i. e. cefuroxime, particularly suitable for oral administration in various animal species and in man for treatment of infections caused by gram-positive and gram-negative bacteria.
1