Results 301 to 310 of about 104,507 (343)
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Generation of ArS- and ArSe-Substituted 4-Quinolone Derivatives Using Sodium Iodide As an Inducer.
Journal of Organic Chemistry, 2018An operationally simple sodium iodide-mediated C-S and C-Se bond formation protocol involving substituted 4-quinolone and thiols/diselenide to generate different ArS/ArSe-substituted 4-quinolone derivatives in excellent yields was developed.
P. Ghosh +3 more
semanticscholar +1 more source
Obstetrics and Gynecology Clinics of North America, 1992
The fluorinated quinolones are synthetic derivatives of nalidixic acid. They are well absorbed when administered orally and have an extended duration of action. They are of primary value in treating gonorrhea and complicated urinary tract infections in nonpregnant women.
Karen Saravanos, Patrick Duff
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The fluorinated quinolones are synthetic derivatives of nalidixic acid. They are well absorbed when administered orally and have an extended duration of action. They are of primary value in treating gonorrhea and complicated urinary tract infections in nonpregnant women.
Karen Saravanos, Patrick Duff
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Pharmaceutisch Weekblad Scientific Edition, 1986
The first quinolone compound, nalidixic acid, showed activity against a limited number of Gram-negative micro-organisms. 'One step' resistance developed in vitro and during treatment. Resistance was not mediated by transfer of R-plasmids, which is a characteristic of all quinolones.
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The first quinolone compound, nalidixic acid, showed activity against a limited number of Gram-negative micro-organisms. 'One step' resistance developed in vitro and during treatment. Resistance was not mediated by transfer of R-plasmids, which is a characteristic of all quinolones.
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Current Pharmaceutical Design, 1970
Abstract: Following the discovery of nalidixic acid in 1962, numerous structural modifications have been made to the quinolone nucleus to increase antimicrobial activit> and improve pharmacokinetic performance. A major advance occured during the 1980\ with the discovery that a fluorine at position-6 conferred broad and potent antimicrobial activity,
Rajesh Kumar +2 more
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Abstract: Following the discovery of nalidixic acid in 1962, numerous structural modifications have been made to the quinolone nucleus to increase antimicrobial activit> and improve pharmacokinetic performance. A major advance occured during the 1980\ with the discovery that a fluorine at position-6 conferred broad and potent antimicrobial activity,
Rajesh Kumar +2 more
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Angewandte Chemie, 2017
The pathogen Pseudomonas aeruginosa produces over 50 different quinolones, 16 of which belong to the class of 2-alkyl-4-quinolone N-oxides (AQNOs) with various chain lengths and degrees of saturation.
Dávid Szamosvári, Thomas Böttcher
semanticscholar +1 more source
The pathogen Pseudomonas aeruginosa produces over 50 different quinolones, 16 of which belong to the class of 2-alkyl-4-quinolone N-oxides (AQNOs) with various chain lengths and degrees of saturation.
Dávid Szamosvári, Thomas Böttcher
semanticscholar +1 more source
Co(III)-Catalyzed Enaminone-Directed C-H Amidation for Quinolone Synthesis.
Organic Letters, 2017We report herein the development of a Co(III)-catalyzed enaminone-directed C-H amidation method for synthetic access to quinolones, an important heterocyclic scaffold for diverse pharmaceutically active structures.
P. Shi +4 more
semanticscholar +1 more source
Journal of Antimicrobial Chemotherapy, 1990
Fluoroquinolones have been in use for the past five years. The agents inhibit Enterobacteriaceae, Pseudomonas aeruginosa, and staphylococci, but some agents lack activity against streptococci and none of the commercially available agents inhibits anaerobic species.
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Fluoroquinolones have been in use for the past five years. The agents inhibit Enterobacteriaceae, Pseudomonas aeruginosa, and staphylococci, but some agents lack activity against streptococci and none of the commercially available agents inhibits anaerobic species.
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Pharmaceutisch Weekblad Scientific Edition, 1987
Resistance to quinolones is only due to mutations. The mechanism and the range of quinolones involved, depend on the locus of the chromosomal mutation e.g. a mutation in the gyr A locus is associated with resistance due to changes in the gyrase. Using high inocula in vitro, varying, but relatively low mutation rates of resistance to fluoroquinolones ...
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Resistance to quinolones is only due to mutations. The mechanism and the range of quinolones involved, depend on the locus of the chromosomal mutation e.g. a mutation in the gyr A locus is associated with resistance due to changes in the gyrase. Using high inocula in vitro, varying, but relatively low mutation rates of resistance to fluoroquinolones ...
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Current Opinion in Allergy and Clinical Immunology, 2003
Quinolones are potent antibacterial agents that can cause drug hypersensitivity reactions affecting different organs. A better understanding of the underlying mechanism and the level of crossreactivity within different quinolones is needed to handle and prevent these diseases.The adverse side-effects caused by quinolones are the result of different ...
Paolo, Campi, Werner J, Pichler
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Quinolones are potent antibacterial agents that can cause drug hypersensitivity reactions affecting different organs. A better understanding of the underlying mechanism and the level of crossreactivity within different quinolones is needed to handle and prevent these diseases.The adverse side-effects caused by quinolones are the result of different ...
Paolo, Campi, Werner J, Pichler
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Seminars in Respiratory Infections, 2001
New fluoroquinolones and fluoronaphthyridones continue to provide the mainstay of antibiotic development, despite recent events associated with unexpected or uncharacteristically severe adverse drug reactions. These have included hepatotoxicity caused by trovafloxacin (suspended), cardiotoxicity associated with grepafloxacin, and phototoxicity caused ...
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New fluoroquinolones and fluoronaphthyridones continue to provide the mainstay of antibiotic development, despite recent events associated with unexpected or uncharacteristically severe adverse drug reactions. These have included hepatotoxicity caused by trovafloxacin (suspended), cardiotoxicity associated with grepafloxacin, and phototoxicity caused ...
openaire +3 more sources