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  • Title: Synthesis of some derivatives of 1-ethyl-6-fluoro-1,4-dihydro-4-oxo-7-(piperazin-1-yl)-3-quino linecarbo xylic acid (norfloxacin) as potential antibacterial agents.
    Author: Pappalardo M, Omodei-Salè A, Zanuso G, Gutierrez A, Moujir L, De Las Heras FG.
    Journal: Farmaco Sci; 1988 Jun; 43(6):489-99. PubMed ID: 3208891.
    Abstract:
    Twelve new fluoroquinolones, structurally related to norfloxacin, have been synthesized in order to investigate the effect of substituents at the secondary nitrogen of the piperazine ring on antimicrobial activity. The new substances (carbamates, isoureas, guanidines, ureas and cyanamides) tested on a variety of gram-positive and gram-negative organisms showed lower activity than the model compound.
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