Abstract
This work describes a facile synthesis and characterization of a new series of pyrazole containing pyrimidine, 1,4-dihydropyridine, and imidazole derivatives using substituted 4-formylpyrazole as a key intermediate via multicomponent reaction sequence. The structures of these unknown compounds were elucidated by IR, 1H NMR, 13C NMR, LC–MS, and elemental analysis. The synthesized products were screened for their in vitro antimicrobial and antioxidant properties. Among the tested 3-(3,4-dihalophenyl)-1-phenyl-1H-pyrazol-4-yl, incorporated acetyl dihydropyrimidine compounds exhibited promising antimicrobial activity and DPPH radical scavenging activity with levels of inhibition at 89.4 and 83.3 %, respectively.
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The authors gratefully acknowledge the University Grants Commission (UGC) and Promotion of University Research and Scientific Excellence (PURSE) for the financial assistance. They are grateful to IISC Bangalore and USIC Mangalore University for providing the spectral analysis.
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Viveka, S., Dinesha, Madhu, L.N. et al. Synthesis of new pyrazole derivatives via multicomponent reaction and evaluation of their antimicrobial and antioxidant activities. Monatsh Chem 146, 1547–1555 (2015). https://doi.org/10.1007/s00706-015-1428-5
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DOI: https://doi.org/10.1007/s00706-015-1428-5