title: In vitro biological activities of 6-isosteric penicillins and 7-isosteric cephalosporins.
abstract: Antibiotic and penicillinase inhibitor activities of various penicillin and cephalosporin analogs are reported. The compounds include C-6 penicillin and C-7 cephalosporin carbon, oxygen and sulfur analogs obtained by replacing the NH of the amide side chains with CH2, O and S, respectively. In almost all cases, analogs were considerably less active than the standard compounds (benzylpenicillin and cephalothin). However, some of the analogs act as penicillinase inhibitors.
mesh_terms: D001419:Bacteria / Q000187:drug effects*; D002511:Cephalosporins / Q000494:pharmacology*; D008826:Microbial Sensitivity Tests; D010406:Penicillins / Q000494:pharmacology*; D065093:beta-Lactamase Inhibitors
chemical_list: D002511:Cephalosporins; D010406:Penicillins; D065093:beta-Lactamase Inhibitors