PROCEDIMENTO PER PRODURRE DERIVATI DI ACIDO 2-(2-AMMINOTIAZOL-4-IL)GLIOSSOLICO O SUOI SALI, INTERMEDI PER ESSO E PROCEDIMENTO PER PRODURRE GLI INTERMEDI

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.