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  • Title: S-3578, a new broad spectrum parenteral cephalosporin exhibiting potent activity against both methicillin-resistant Staphylococcus aureus (MRSA) and Pseudomonas aeruginosa. Synthesis and structure-activity relationships.
    Author: Yoshizawa H, Itani H, Ishikura K, Irie T, Yokoo K, Kubota T, Minami K, Iwaki T, Miwa H, Nishitani Y.
    Journal: J Antibiot (Tokyo); 2002 Nov; 55(11):975-92. PubMed ID: 12546419.
    Abstract:
    A series of 7-aminothiadiazolylcephalosporins having a 1-(substituted)-1H-imidazo[4,5-b]pyridinium group at the C-3' position of the cephem nucleus were synthesized and evaluated for in vitro antibacterial activities. Among the cephalosporins prepared in this study, 7beta-[2-(5-amino-1,2,4-thiadiazol-3-yl)-2(Z)-ethoxyiminoacetamido]-3-[1-(3-methylaminopropyl)-1H-imidazo[4,5-b]pyridinium-4-yl]methyl-3-cephem-4-carboxylate sulfate (S-3578) showed extremely potent broad spectrum activity against both gram-positive bacteria including methicillin-resistant Staphylococcus aureus (MRSA) and gram-negative bacteria including Pseudomonas aeruginosa, and good water solubility.
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