International Journal of Pharmaceutical Science and Research

International Journal of Pharmaceutical Science and Research

ISSN: 2455-4685

Vol. 1, Issue 5 (2016)

Synthesis and biological evaluation of some new pyrazole derivatives

Author(s): Mohamed A. Hamed, Ahmed A El Gokha, Ramzy Essam R Abdelwahed, Asem A Mohamed, Abdel Moneim EL-Torgoman, Ibrahim El-Tantawy El Sayed
Abstract: The synthesis of a novel of pyrazole derivatives was achieved by condensation of acetyl furan with phenyl hydrazine to give hydrazone (1) On the other hand, cyclization of α, β-unsaturated ketone. Using Vilsmeier reagent by DMF (dimethylformamid) and POCl3 Phosphorus oxychloride) to give compound (2). The chemical structures of all new compounds were established by IR, ¹HNMR, and mass spectra data. All the synthesized compounds were screened for in vitro antibacterial activity and most of them showed potency against both gram positive and gram negative bacteria. Compounds 4-(α-benzoyl aminoacrylic acid)-3-Furayl-1-phenylpyrazol, 4-(α- benzoylamino methyl acrylate)-3-Furayl-1-phenylpyrazol,4-(2-4-dinitrophen ylhydrazone)-3-Furayl-1-phenylpyrazole showed the highest antibacterial activity against Bacillus subtilis strain with minium inhibition zone 19 mm.
Pages: 14-20  |  1644 Views  1009 Downloads
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