[EN] NOVEL THIOESTER DERIVATIVES OF THIAZOLYL ACETIC ACID AND THEIR USE IN THE PREPARATION OF CEPHALOSPORIN COMPOUNDS<br/>[FR] NOUVEAUX DERIVES THIO-ESTERS D'ACIDE ACETIQUE DE THIAZOLYL ET LEUR UTILISATION DANS LA PREPARATION DE COMPOSES DE CEPHALOSPORINE
申请人:ORCHID CHEMICALS & PHARM LTD
公开号:WO2002053563A1
公开(公告)日:2002-07-11
The present invention provides novel thioester derivatives of thiazolyl acetic acid of the general formula (I), also, the invention provides a method for preparation of the thioester derivatives and reaction of the thioester derivatives with cephem carboxylic acids to produce cephalosporin antibiotic compounds having general formula (II).