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Fluoroquinolone-derived Fluorescent Probes for Studies of Bacterial Penetration and Efflux

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Journal Medchemcomm
Specialty Chemistry
Date 2019 Jul 16
PMID 31303987
Citations 17
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Abstract

Fluorescent probes derived from the fluoroquinolone antibiotic ciprofloxacin were synthesised using a Cu(i)-catalysed azide-alkyne cycloaddition (CuAAC) to link a ciprofloxacin azide derivative with alkyne-substituted green and blue fluorophores. The azide () and fluorophore ( and ) derivatives retained antimicrobial activity against Gram-positive and Gram-negative bacteria. The use of confocal fluorescent microscopy showed intracellular penetration, which was substantially enhanced in the presence of carbonyl cyanide 3-chlorophenylhydrazone as an efflux pump inhibitor in .

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