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A new series of 1,2-diaryl-4-substituted-benzylidene-5-4H-imidazolone derivatives 10a-h was designed and synthesized for evaluation as selective COX-2 inhibitors, anti-inflammatory agents and as analgesic agents. All compounds were more selective for COX-2 isozyme and showed good in vivo anti-inflammatory activity. Compounds 10a, 10b, 10e and 10f were the most COX-2 selective compounds (S.I.=10.76,...
A new series of oxazolones and triazinones were designed and synthesized and evaluated against both COX-1 and COX-2 enzymes. Full structure elucidation of the new derivatives was performed using microanalyses, IR, 1H NMR, 13C NMR and mass spectra. Most of the derivatives showed good inhibitory activity against COX-2 enzyme specifically compounds IIIc, IIIe, IVd and IVg with IC50 values 0.024, 0.019,...
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