Synthesis, characterization, antibacterial, antioxidant and anti-inflammatory activities of new 4-Aryl-2-amino-6-(4-hydroxy coumarin-3-yl) pyridine-3-carbonitriles derivatives

Authors

  • Naceur HAMDI 1 Chemistry department, College of Science and Arts, Al-Rass, P.O. Box 53, Qassim University, Buraidah 51477, Saudi Arabia 2 Higher Institute of Environmental Science and Technologies (HIEST-Borj Cedria, Tunisia), University of Carthage, Touristic Road of Soliman, BP 95, Hammam-Lif 2050, Tunisia

DOI:

https://doi.org/10.24297/jac.v11i1.2224

Keywords:

4-Aryl-2-amino-6-(4-hydroxy coumarin-3-yl) pyridine-3-carbonitriles, Antibacterial, Antioxidant, Anti-inflammatory, Synthesis

Abstract

This study aimed for the synthesis of 4-Aryl-2-amino-6-(4-hydroxy coumarin-3-yl) pyridine-3-carbonitriles 4 suitable for use as antibacterial, anti-oxidant and anti-inflammatory activities via a versatile, readily accessible 3-((2E)-3(aryl)prop-2-enoyl)-2H-chromen-2-one 3  which were prepared by refluxing 3-acetyl-4-hydroxy coumarin with aromatic aldehydes in chloroform in the presence of a catalytic amount of piperidine. Then the direct reaction of the obtained chalcones 3 with malonitrile in the presence of ammonium acetate in one step gave products 5 .The structures of the new compounds 3-4 were confirmed by elemental analysis, IR, and multinuclear/multidimensional NMR spectroscopy (1H, 13C-NMR, NOESY, HMBC) which allowed assignment of the complete network of proton and carbon atoms. Most of the new compounds 4 exhibit moderate antibacterial activity against Gram Negative bacterial strains (E. coli, K. pneumonia, S. typhi and S. flexneri). In addition, the compounds 4 were investigated for anti-oxidant activities by super oxide radical, DPPH (2,2-Diphenyl-1-picrylhydrazyl), and hydroxyl radical scavenging assays, where most of the compounds displayed significant antioxidant activities. Furthermore, these 4-Aryl-2-amino-6-(4-hydroxy coumarin-3-yl) pyridine-3-carbonitriles 4 were evaluated for anti-inflammatory activity by indirect haemolytic and lipoxygenase inhibition assays where compounds revealed good activity.

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Author Biography

Naceur HAMDI, 1 Chemistry department, College of Science and Arts, Al-Rass, P.O. Box 53, Qassim University, Buraidah 51477, Saudi Arabia 2 Higher Institute of Environmental Science and Technologies (HIEST-Borj Cedria, Tunisia), University of Carthage, Touristic Road of Soliman, BP 95, Hammam-Lif 2050, Tunisia

Chemistry department

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Published

2016-12-17

How to Cite

HAMDI, N. (2016). Synthesis, characterization, antibacterial, antioxidant and anti-inflammatory activities of new 4-Aryl-2-amino-6-(4-hydroxy coumarin-3-yl) pyridine-3-carbonitriles derivatives. JOURNAL OF ADVANCES IN CHEMISTRY, 11(1), 3355–3363. https://doi.org/10.24297/jac.v11i1.2224

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