title: New broad-spectrum parenteral cephalosporins exhibiting potent activity against both methicillin-resistant Staphylococcus aureus (MRSA) and Pseudomonas aeruginosa. Part 2: Synthesis and structure-activity relationships in the S-3578 series.
abstract: Among the prepared novel cephalosporin derivatives related to S-3578, a series of 7beta-[2-(5-amino-1,2,4-thiadiazol-3-yl)-2-(Z)-ethoxyiminoacetamido]-3-[1-(aminoalkyl)-1H-pyrazolo[4,3-b]pyridinium-4-yl]methyl-3-cephem-4-carboxylate showed potent activity against both MRSA and Pseudomonas aeruginosa, and displayed good water solubility.
authors.affiliation: Shionogi Research Laboratories, Shionogi & Co. Ltd, 12-4, Sagisu 5-chome, Fukushima-ku, Osaka 553-0002, Japan. hidenori.yoshizawa@shionogi.co.jp
authors.forename: Hidenori
authors.initials: H
authors.lastname: Yoshizawa
authors.forename: Tadatoshi
authors.initials: T
authors.lastname: Kubota
authors.forename: Hikaru
authors.initials: H
authors.lastname: Itani
authors.forename: Hiroyuki
authors.initials: H
authors.lastname: Ishitobi
authors.forename: Hideaki
authors.initials: H
authors.lastname: Miwa
authors.forename: Yasuhiro
authors.initials: Y
authors.lastname: Nishitani
mesh_terms: D000900:Anti-Bacterial Agents / Q000138:chemical synthesis / Q000737:chemistry / Q000494:pharmacology; D002511:Cephalosporins / Q000138:chemical synthesis* / Q000737:chemistry / Q000494:pharmacology*; D016106:Methicillin Resistance; D008826:Microbial Sensitivity Tests; D015394:Molecular Structure; D011550:Pseudomonas aeruginosa / Q000187:drug effects*; D013211:Staphylococcus aureus / Q000187:drug effects*; D013329:Structure-Activity Relationship
chemical_list: C471249:7-(2-(5-amino-1,2,4-thiadiazol-3-yl)-2-ethoxyiminoacetamido)-3-(1-(3-methylaminopropyl)-1H-imidazo(4,5-b)pyridinium-4-yl)methyl-3-cephem-4-carboxylate; D000900:Anti-Bacterial Agents; D002511:Cephalosporins