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  • Title: Synthesis of antimicrobial agents. 3. Syntheses and antibacterial activities of 7-(4-hydroxypiperazin-1-yl)quinolones.
    Author: Uno T, Kondo H, Inoue Y, Kawahata Y, Sotomura M, Iuchi K, Tsukamoto G.
    Journal: J Med Chem; 1990 Oct; 33(10):2929-32. PubMed ID: 2170653.
    Abstract:
    A series of novel pyridone carboxylic acids having a 4-hydroxypiperazinyl group at the 7-position of norfloxacin and ciprofloxacin were prepared. The in vivo antibacterial efficacies of these compounds were superior to those of corresponding piperazinyl derivatives. From the results of the studies on the pharmacokinetic profile and toxicity, the 4-hydroxypiperazinyl derivatives were confirmed to be pharmacologically superior to corresponding piperazinyl derivatives. Thus, a 4-hydroxypiperazinyl group was revealed to be a beneficial substituent for potential use in future quinolone antibacterials.
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