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Synthesis and biological activities of new substituted thiazoline-quinoline derivatives Cover

Synthesis and biological activities of new substituted thiazoline-quinoline derivatives

Open Access
|Nov 2009

Abstract

5-Acyl-8-hydroxyquinoline-2-(3'-substituted-4'-aryl-2,3-dihydrothiazol-2'-ylidene)hydrazones, 5a-e to 10a-c, were prepared by the reaction of appropriate 5-acyl-8-hydroxyquinoline-4-substituted thiosemicarbazones 3a-e and phenacyl bromides 4a-e. Structures of the new compounds were verified on the basis of spectral and elemental analyses. Twenty-eight new compounds were tested for their possible antimicrobial activities. Most of the tested compounds showed weak to moderate antibacterial activity against most of the bacterial strains used in comparison with gatifloxacin as a reference drug. The test compounds showed weak to moderate antifungal activity against tested fungi in comparison with ketoconazole as a reference drug. On the other hand, the newly synthesized compounds were tested for their anti-inflammatory effects and most of them showed good to excellent anti-inflammatory activity compared to indomethacin. Moreover, ulcerogenicity and the median lethal dose (LD50) of the most active anti-inflammatory compounds 6b and 9e were determined in mice; they were non-toxic at doses up to 400 mg kg-1 after i.p. administration.

DOI: https://doi.org/10.2478/v10007-009-0033-8 | Journal eISSN: 1846-9558 | Journal ISSN: 1330-0075
Language: English
Page range: 365 - 382
Published on: Nov 16, 2009
Published by: Croatian Pharmaceutical Society
In partnership with: Paradigm Publishing Services
Publication frequency: 4 issues per year
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© 2009 Mostafa Hussein, Abdel-Hamid Kafafy, Samia Abdel-Moty, Ola Abou-Ghadir, published by Croatian Pharmaceutical Society
This work is licensed under the Creative Commons License.

Volume 59 (2009): Issue 4 (December 2009)