title: New cephalosporins with 7-acyl groups derived from beta-ketoacids. I. 7-(beta-Ketoacylamino)cephalosporins.
abstract: The synthesis and antimicrobial profile of a series of 7-(beta-ketoacylamino)cephalosporins (1) bearing an acetoxymethyl or a heterocyclichiomethyl group at the 3-position are described. Of this series, 3-[[(1-methyl-1H-tetrazol-5-yl)thio]methyl]-7-(3-oxobutyrylamino)ceph-3-em-4-carboxylic acid (11) showed moderate antibacterial activities in in vitro and in vivo tests.
mesh_terms: D000818:Animals; D001419:Bacteria / Q000187:drug effects; D002511:Cephalosporins / Q000138:chemical synthesis* / Q000494:pharmacology / Q000627:therapeutic use; D055598:Chemical Phenomena; D002621:Chemistry; D004927:Escherichia coli Infections / Q000188:drug therapy; D007651:Keto Acids; D008297:Male; D051379:Mice; D008813:Mice, Inbred ICR
chemical_list: D002511:Cephalosporins; D007651:Keto Acids