ChemInform Abstract: Semisynthetic β‐Lactam Antibiotics. Part 4. Synthesis and Antibacterial Activity of New Ureidocephalosporin and Ureidocephamycin Derivatives Containing a Catechol Moiety or Its Acetate.

Abstract

The cephalosporins (III) mentioned in the title are prepared either by coupling the ureidocarboxylic acids (I) with 7‐aminocephalosporanic acid (II) or by reaction of the carbamic acid chlorides (VII) with the aminocephem (VIII).