Pharmacological Characterization of 7-(4-(Piperazin-1-yl)) Ciprofloxacin Derivatives: Antibacterial Activity, Cellular Accumulation, Susceptibility to Efflux Transporters, and Intracellular Activity
作者:Béatrice Marquez、Vincent Pourcelle、Coralie M. Vallet、Marie-Paule Mingeot-Leclercq、Paul M. Tulkens、Jacqueline Marchand-Bruynaert、Françoise Van Bambeke
DOI:10.1007/s11095-013-1250-x
日期:2014.5
PurposeTo evaluate pharmacological properties (antibacterial activity; accumulation in phagocytic cells; activity against intracellular bacteria; susceptibility to fluoroquinolone efflux transporters) of ciprofloxacin derivatives modified at C-7 of the piperazine ring. MethodsN-acetyl- (1), N-benzoyl- (2), N-ethyl- (3), and N-benzyl- (4) ciprofloxacin were synthesized. MICs against Escherichia coli
Chinoloncarbonsäuren, Verfahren zu ihrer Herstellung sowie diese enthaltende antibakterielle Mittel
申请人:BAYER AG
公开号:EP0117473A1
公开(公告)日:1984-09-05
Chinoloncarbonsäuren der allgemeinen Formel
mit den in der Beschreibung angegebenen Bedeutungen von X und R1-R5 haben gute antibakterielle Wirkung und sollen als Wirkstoffe für Arzneimittel verwendet werden.
通式中的喹啉羧酸(X 和 R1-R5 的含义见说明)具有良好的抗菌活性,可用作药物的活性成分。
Bakterizide Mittel auf Chinoloncarbonsäure-Basis
申请人:BAYER AG
公开号:EP0121727A1
公开(公告)日:1984-10-17
Die Erfindung betrifft die bakterizide Verwendung von neuen 1-Cyclopropyl-1,4-dihydro-4-oxo-3-chinolincarbonsäure-Derivaten der Formel (I)
in der
R', R2; R3, R", R5 und X die in der Beschreibung gegebene Bedeutung haben.
本发明涉及式 (I) 的新 1-环丙基-1,4-二氢-4-氧代-3-喹啉羧酸衍生物的杀菌用途
其中
R'、R2;R3、R"、R5 和 X 具有描述中给出的含义。
Studies on the antimicrobial properties of N-acylated ciprofloxacins
作者:Ryan Cormier、Whittney N. Burda、Lacey Harrington、Jordan Edlinger、Karthik M. Kodigepalli、John Thomas、Rebecca Kapolka、Glen Roma、Burt E. Anderson、Edward Turos、Lindsey N. Shaw
DOI:10.1016/j.bmcl.2012.05.026
日期:2012.10
Fluoroquinolone antibiotics have been a mainstay in the treatment of bacterial diseases. The most notable representative, ciprofloxacin, possesses potent antimicrobial activity; however, a rise in resistance to this agent necessitates development of novel derivatives to prolong the clinical lifespan of these antibiotics. Herein we have synthesized and analyzed the antimicrobial properties of a library of N-acylated ciprofloxacin analogues. We find that these compounds are broadly effective against Gram-positive and Gram-negative bacteria, with many proving more effective than the parental drug, and several possessing MICs <= 1.0 mu g/ml against methicillin-resistant Staphylococcus aureus and Bartonella species. An analysis of spontaneous mutation frequencies reveals very low potential for resistance in MRSA compared to existing fluoroquinolones. Mode of action profiling reveals that modification of the piperazinyl nitrogen by acylation does not alter the effect of these molecules towards their bacterial target. We also present evidence that these N-acylated compounds are highly effective at killing intracellular bacteria, suggesting the suitability of these antibiotics for therapeutic treatment. (c) 2012 Published by Elsevier