title: Novel cephalosporins. Modification of the C-4 carboxyl group.
mesh_terms: D001419:Bacteria / Q000187:drug effects; D002511:Cephalosporins / Q000138:chemical synthesis* / Q000494:pharmacology; D013293:Enterococcus faecalis / Q000187:drug effects; D004926:Escherichia coli / Q000187:drug effects; D007711:Klebsiella pneumoniae / Q000187:drug effects; D009682:Magnetic Resonance Spectroscopy; D013058:Mass Spectrometry; D008826:Microbial Sensitivity Tests; D013055:Spectrophotometry, Infrared; D013210:Staphylococcus / Q000187:drug effects; D013297:Streptococcus pyogenes / Q000187:drug effects; D013329:Structure-Activity Relationship
chemical_list: D002511:Cephalosporins