- Methanesulfonamide group at position-4 of the C-5-phenyl ring of 1,5-diarylpyrazole affords a potent class of cyclooxygenase-2 (COX-2) inhibitors.
Methanesulfonamide group at position-4 of the C-5-phenyl ring of 1,5-diarylpyrazole affords a potent class of cyclooxygenase-2 (COX-2) inhibitors.
Bioorganic & medicinal chemistry letters (2004-03-18)
Sunil Kumar Singh, Saibaba Vobbalareddy, Samala Shivaramakrishna, A Krishnamraju, Shaikh Abdul Rajjak, Seshagiri Rao Casturi, Vangoori Akhila, Yeleswarapu Koteswar Rao
PMID15026050
ABSTRACT
The effect of methanesulfonamide (MeSO(2)NH) group on COX-2 inhibitory activity of 1,5-diarylpyrazole is described. While this group being at position-4 of the N(1)-phenyl ring was found to be ineffective, its installation at position-4 of the C-5 phenyl ring offered several potent and selective inhibitors of COX-2 with IC(50) as low as 30 nM.
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