title: Synthesis and structure-activity relationships of 7 beta-[2-(2-aminothiazol-4-yl)acetamido]-cephalosporin derivatives. I. Synthesis and antibacterial activity of 7 beta-[2-alkyl- and 2-hydroxy-2-(2-aminothiazol-4-yl)-acetamido]cephalosporins.
abstract: 2-Alkyl- and 2-hydroxy derivatives of 7 beta-[2-aminothiazol-4-yl)acetamido]cephalosporins were synthesized to improve the antibacterial activity of the parent compounds especially against beta-lactamase-producing organisms. Some of these compounds showed an increase in activity against Serratia marcescens (Xb, XXIIIa) and Enterobacter cloacae (Xb, XIV). The 2,2-dimethyl derivative (XXVIIIb) showed a definite loss of activity.
mesh_terms: D001419:Bacteria / Q000187:drug effects; D002511:Cephalosporins / Q000138:chemical synthesis* / Q000494:pharmacology; D055598:Chemical Phenomena; D002621:Chemistry
chemical_list: D002511:Cephalosporins