alexa Synthesis and antibacterial activity of some new 1-heteroaryl-5-amino-3H methyl-4-phenylpyrazoles.


Bioenergetics: Open Access

Author(s): Aggarwal R, Kumar V, Tyagi P, Singh SP

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Abstract The regioselective synthesis of 1-heteroaryl-5-amino-4-phenylpyrazoles 3a-g and 1-heteroaryl-5-amino-3-methyl-4-phenylpyrazoles 3h-n was achieved by the treatment of heteroarylhydrazines 1a-g with alpha-phenylformylacetonitrile 2a and alpha-phenylacetylacetonitrile 2b, respectively. The structures of the compounds 3 were established by the combined use of 1H and 13C NMR spectroscopy. All the fourteen compounds were tested for their in vitro antibacterial activity against three Gram-positive and two Gram-negative bacteria. Six compounds 3a, 3d, 3e, 3g, 3l, and 3n from this series were found to be equipotent or more potent than the commercial antibiotics (Linezolid and Cefroxime axetil). This article was published in Bioorg Med Chem and referenced in Bioenergetics: Open Access

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