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  • Title: Synthesis and in vitro antibacterial activity of a series of novel gatifloxacin derivatives.
    Author: Chai Y, Liu ML, Lv K, Feng LS, Li SJ, Sun LY, Wang S, Guo HY.
    Journal: Eur J Med Chem; 2011 Sep; 46(9):4267-73. PubMed ID: 21764484.
    Abstract:
    A series of novel gatifloxacin (GTFX) derivatives were designed, synthesized and characterized by (1)H NMR, (13)C NMR, MS and HRMS. These derivatives were evaluated for in vitro antibacterial activity against representative Gram-positive and Gram-negative strains. Our results reveal that most of the target compounds show good potency in inhibiting the growth of Staphylococcus aureus including MRSA and Staphylococcus epidermidis including MRSE. Compounds 8, 14 and 20 have useful activity against all of the tested Gram-positive and Gram-negative strains (MICs: 0.06-4 μg/mL). In particular, 20 possessing a broad antimicrobial spectrum (MICs: 0.06-1 μg/mL) was found to be 2-32-folds more potent than the reference drug levofloxacin and parent GTFX against Pseudomonas aeruginosa.
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