Synthesis and Cyclooxygenase-2 Inhibiting Property of 1,5-Diarylpyrazoles with Substituted Benzenesulfonamide Moiety as Pharmacophore: Preparation of Sodium Salt for Injectable Formulation<sup>†</sup>
作者:Manojit Pal、Manjula Madan、Srinivas Padakanti、Vijaya R. Pattabiraman、Srinivas Kalleda、Akhila Vanguri、Ramesh Mullangi、N. V. S. Rao Mamidi、Seshagiri R. Casturi、Alpeshkumar Malde、B. Gopalakrishnan、Koteswar R. Yeleswarapu
DOI:10.1021/jm020563g
日期:2003.9.1
A series of 1,5-diarylpyrazoles having a substituted benzenesulfonamide moiety as pharmacophore was synthesized and evaluated for cyclooxygenase (COX-1/COX-2) inhibitory activities. Through SAR and molecular modeling, it was found that fluorine substitution on the benzenesulfonamide moiety along with an electron-donating group at the 4-position of the 5-aryl ring yielded selectivity as well as potency for COX-2 inhibition in vitro. Among such compounds 3-fluoro-4-[5-(4-methoxyphenyl)-3-trifluoromethyl-1H-1-pyrazolyl]-1-benzenesulfonamide 3 displayed interesting pharmacokinetic properties along with antiinflammatory activity in vivo. Among the sodium salts tested in vivo, 10, the propionyl analogue of 3, showed excellent antiinflammatory activity and therefore represents a new lead structure for the development of injectable COX-2 specific inhibitors.