PROCESS FOR PREPARING 2-(2-AMINOTHIAZOL-4-YL)-GLYOXYLIC ACID DERIVATIVES OR SALTS THEREOF AND OF INTERMEDIATES THEREFOR

摘要

This invention relates to a novel process for producing a 2-(2-aminothiazol-4-yl)glyoxylic acid derivative or a salt thereof which are useful in producing a cephalosporin antibiotic, and to intermediates for said derivative and salt and a process for producing the intermediates.