[Studies on beta-lactam antibiotics for medicinal purpose. XII. Synthesis and structure-activity relationships of 7 beta-[alpha-(4-ethyl-2,3-dioxo-1-piperazinecarboxamido)-alpha-substituted acetamido]-7 alpha-metoxycephalosporanic acids].
D000818:Animals; D001419:Bacteria / Q000187:drug effects*; D002511:Cephalosporins / Q000494:pharmacology*; D004352:Drug Resistance, Microbial; D051379:Mice; D013329:Structure-Activity Relationship
D002511:Cephalosporins