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Bioorg Med Chem Lett. 2001 Jul 23;11(14):1903-6.

3-Arylpiperidines as potentiators of existing antibacterial agents.

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Medicinal Chemistry, Pharmacia, 49007-4940, Kalamazoo, MI, USA.


Important resistance patterns in Gram-negative pathogens include active efflux of antibiotics out of the cell via a cellular pump and decreased membrane permeability. A 3-arylpiperidine derivative (1) has been identified by high-throughput assay as a potentiator with an IC(50) approximately 90 microM. This report details the evaluation of the tether length, aryl substitution and the importance of the fluorine on antibiotic accumulation. Evaluation of various tether lengths demonstrated that the two-carbon tethered analogues are optimal. Removal of the fluorine has a modest effect on antibiotic accumulation and the defluorinated analogue 17 is equally potent to the original lead 1.

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