title: Synthetic cephalosporins. The synthesis and antibacterial activities of 7-[2-(2-(amino-1,3,4-thiadiazol-5-yl)acetamido]-cephalosporins.
abstract: Synthesis and antibacterial activities of 7-[2-(2-amino-1,3,4-thiadiazol-5-yl)acetamido]-cephalosporins and their derivatives having the methoxyimino group at the 2-position of the 7-acyl moiety are described. These compounds are of interest as structural analogues of potent antibiotics, 7-[2-(2-aminothiazol-4-yl)acetamido]cephalosporins. 7-[2-(2-Amino-1,3,4-thiadiazol-5-yl)acetamido]cephalosporins showed comparable activity with cefazolin. Introduction of methoxyimino group to the 7-side chain resulted in a lowering of activity.
mesh_terms: D000900:Anti-Bacterial Agents / Q000138:chemical synthesis*; D001419:Bacteria / Q000187:drug effects; D002511:Cephalosporins / Q000138:chemical synthesis* / Q000633:toxicity; D007202:Indicators and Reagents; D009682:Magnetic Resonance Spectroscopy; D008826:Microbial Sensitivity Tests; D013055:Spectrophotometry, Infrared; D013329:Structure-Activity Relationship
chemical_list: D000900:Anti-Bacterial Agents; D002511:Cephalosporins; D007202:Indicators and Reagents