Journal of the Korean Chemical Society (대한화학회지)

Korean Chemical Society (대한화학회)
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A Facile Solvent and Catalyst Free Synthesis of New Dihydro Pyrimidinones as Antimicrobial Agents

  • Hegde, Hemant (Department of Chemistry, Manipal Institute of Technology, Manipal Academy of Higher Education) ;
  • Ahn, Chuljin (Department of Biology and Chemistry, Changwon National University) ;
  • Gaonkar, Santosh L. (Department of Chemistry, Manipal Institute of Technology, Manipal Academy of Higher Education) ;
  • Shetty, Nitinkumar S. (Department of Chemistry, Manipal Institute of Technology, Manipal Academy of Higher Education)
  • Received : 2019.09.30
  • Accepted : 2019.10.31
  • Published : 2019.12.20
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Abstract

An efficient one pot multicomponent synthesis of pyrimidinone derivatives of Biginelli type is described. 4-amino-6-aryl-pyrimidine-5-carbonitrile molecules were synthesized efficiently via three-component Biginelli-type condensation of aldehyde, malononitrile, and semicarbazone as urea substituent in the presence of a catalytic amount of PEG-400 as green medium under microwave irradiation. The reactions proceeded efficiently in the presence of microwave radiation to afford the desired products in good to excellent yields. Products have been confirmed by IR, and NMR spectral analysis. All the molecules were tested for their antimicrobial activity against E. coli, S. aureus, P. aeruginosa and C. tropicalis. Some of the compounds have shown moderate to good inhibition efficiency against both gram-positive and gram-negative bacteria. The potent activity was observed against the fungal species with minimum inhibition concentration 12.5 ㎍/mL.

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References

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