title: Synthesis and structure-activity relationships of 7 beta-[2-(2-aminothiazol-4-yl)acetamido]-cephalosporin derivatives. II. Synthesis and antibacterial activity of 7 beta-[2-(2-aminothiazol-4-yl)acetamido]-7 alpha-methoxycephalosporins.
abstract: 7 beta-[2-(2-Aminothiazol-4-yl)acetamido]-7 alpha-methoxycephalosporins were synthesized both by acylation of the 7 beta-amino-7 alpha-methoxycephalosporin compound (VIII) and a new direct acyl-exchange reaction of 7 alpha-methoxy-7 beta-phosphoramido compound (VII). Some of these compounds (IXa, IXb) showed higher antibacterial activity than the 7 alpha-unsubstituted compound against beta-lactamase-producing strains of Serratia marcescens and Proteus vulgaris.
mesh_terms: D001419:Bacteria / Q000187:drug effects; D002511:Cephalosporins / Q000138:chemical synthesis* / Q000494:pharmacology; D055598:Chemical Phenomena; D002621:Chemistry
chemical_list: D002511:Cephalosporins