title: Semisynthetic cephalosporins. IV. Synthesis and structure activity relationships of parenterally active 7-[4-(substituted methyl)phenyl]-acetamido-3-cephem-4-carboxylic acids.
abstract: A group of novel 4-substituted phenylacetic acids were prepared and coupled with several 7-amino-delta-3-cephems to afford a family of parenterally active cephalosporins. A compound designated 13I had the broadest spectrum of activity and the highest potency of the group against both Gram-positive and Gram-negative bacteria. The activity of 13I included high potency against penicillinase-producing staphylococci and activity against anaerobes, including Bacteroides fragilis.
mesh_terms: D000900:Anti-Bacterial Agents / Q000138:chemical synthesis* / Q000494:pharmacology; D001419:Bacteria / Q000187:drug effects; D002511:Cephalosporins / Q000138:chemical synthesis* / Q000494:pharmacology; D013329:Structure-Activity Relationship
chemical_list: D000900:Anti-Bacterial Agents; D002511:Cephalosporins