Hydrazones of 2-aryl-quinoline-4-carboxylic acid hydrazides: Synthesis and preliminary evaluation as antimicrobial agents

A new series of 2-arylquinoline-4-carboxylic acid hydrazide–hydrazones was synthesized using an appropriate synthetic route. All the target compounds were evaluated for their in vitro antimicrobial activity against Staphylococcus aureus as an example for Gram-positive bacteria, Escherichia coli as a...

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Veröffentlicht in:Bioorganic & medicinal chemistry 2006-12, Vol.14 (24), p.8675-8682
Hauptverfasser: Metwally, Kamel A., Abdel-Aziz, Lobna M., Lashine, El-Sayed M., Husseiny, Mohamed I., Badawy, Rania H.
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container_end_page 8682
container_issue 24
container_start_page 8675
container_title Bioorganic & medicinal chemistry
container_volume 14
creator Metwally, Kamel A.
Abdel-Aziz, Lobna M.
Lashine, El-Sayed M.
Husseiny, Mohamed I.
Badawy, Rania H.
description A new series of 2-arylquinoline-4-carboxylic acid hydrazide–hydrazones was synthesized using an appropriate synthetic route. All the target compounds were evaluated for their in vitro antimicrobial activity against Staphylococcus aureus as an example for Gram-positive bacteria, Escherichia coli as an example for Gram-negative bacteria, and Candida albicans as a representative of fungi. The minimum inhibitory concentration (MIC) was determined for test compounds as well as for reference standards. Among the compounds tested, compounds having nitro substituents at the arylidene moiety showed the most potent antifungal as well as antibacterial activities against E. coli. Compound 23 displayed an antifungal activity comparable to that of nystatin. However, none of the compounds demonstrated any antibacterial activity against S. aureus. Hydrophobicity of the target compounds correlated weakly with their antibacterial and antifungal activities. The most potent compounds namely, 7, 18, 19, 22, and 23 were assessed for hemolytic toxicity and found to be non-hemolytic up to a concentration of 100 μg/mL. In addition, the most potent compound ( 23) was evaluated for in vitro cytotoxic activity against various cancer cell lines. This compound was found to display no cytotoxic activity but rather it induces the proliferation rate of Hep-G2 cells.
doi_str_mv 10.1016/j.bmc.2006.08.022
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subjects 2-Arylquinoline-4-carboxylic acids
Anti-Bacterial Agents - chemical synthesis
Anti-Bacterial Agents - chemistry
Anti-Bacterial Agents - pharmacology
Antibiotics. Antiinfectious agents. Antiparasitic agents
Antifungal agents
Antifungal Agents - chemical synthesis
Antifungal Agents - chemistry
Antifungal Agents - pharmacology
Antimicrobial activity
Antineoplastic Agents - chemical synthesis
Antineoplastic Agents - chemistry
Antineoplastic Agents - pharmacology
Biological and medical sciences
Breast Neoplasms - drug therapy
Candida albicans
Candida albicans - drug effects
Carboxylic Acids - chemical synthesis
Carboxylic Acids - chemistry
Carboxylic Acids - pharmacology
Carcinoma, Hepatocellular - drug therapy
Cell Proliferation - drug effects
Escherichia coli
Escherichia coli - drug effects
Hemolysis - drug effects
Humans
Hydrazones
Hydrazones - chemical synthesis
Hydrazones - chemistry
Hydrazones - pharmacology
Liver Neoplasms - drug therapy
Medical sciences
Microbial Sensitivity Tests
Molecular Structure
Pfitzinger reaction
Pharmacology. Drug treatments
Quinolones - chemical synthesis
Quinolones - chemistry
Quinolones - pharmacology
Staphylococcus aureus
Staphylococcus aureus - drug effects
Structure-Activity Relationship
Tumor Cells, Cultured
title Hydrazones of 2-aryl-quinoline-4-carboxylic acid hydrazides: Synthesis and preliminary evaluation as antimicrobial agents
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