7-methoxycephalosporin derivatives

Abstract From the Canadian patent

Abstract of the disclosure A compound of the formula:, wherein R2 is hydrogen or a halogen and R3 stands for methyl, acetoxymethyl, carbamoyloxymethyl an alkoxymethyl, an alkylthiomethyl, 2-carboxy-1-ethenyl or a heterocyclic, thiomethyl, or a pharmaceutically acceptable salt thereof is found to have a broad antimicrobial spectrum and in, particular, effective against Gram-negative bacteria including Escherichia coli, Proteus vulgaris, Pseudomonas aeruginosa Serratia marcescense as well as Gram-positive ones including antibiotic resistant strains. Thus, these compounds may be used for antimicrobial agents in therapeutical purposes.