Cephalosporin compounds and formulations containing them for use in the treatment of bacterial infections and the preparation of the cephalosporin compounds

摘要

Cephalosporin antibiotics of formulawherein R is hydrogen, an alkali metal cation, or a carboxylic acid protecting group; R₁ is hydrogen or methoxy; R₂ is hydrogen or an amino protecting group; R₃ is hydrogen or C₁-C₄ alkyl; and R₄ is C₁-C₄ alkyl.