Synthesis of celecoxib analogues possessing a N-difluoromethyl-1,2-dihydropyrid-2-one 5-lipoxygenase pharmacophore: biological evaluation as dual inhibitors of cyclooxygenases and 5-lipoxygenase with anti-inflammatory activity.

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Chowdhury MA, Abdellatif KR, Dong Y, Das D, Suresh MR, Knaus EE

Synthesis of celecoxib analogues possessing a N-difluoromethyl-1,2-dihydropyrid-2-one 5-lipoxygenase pharmacophore: biological evaluation as dual inhibitors of cyclooxygenases and 5-lipoxygenase with anti-inflammatory activity.

J Med Chem. 2009 Mar 26;52(6):1525-9. doi: 10.1021/jm8015188.

PubMed ID

19296694 [ View in PubMed

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Abstract

A novel class of 1-(4-methanesulfonylphenyl and 4-aminosulfonylphenyl)-5-[4-(1-difluoromethyl-1,2-dihydropyrid-2-one)]-3-trifluor omethyl-1H-pyrazole hybrid cyclooxygenase-2 (COX-2)/5-lipoxygenase (5-LOX) inhibitory anti-inflammatory agents was designed. Replacement of the tolyl ring present in celecoxib by the N-difluoromethyl-1,2-dihydropyrid-2-one moiety provided compounds showing dual selective COX-2/5-LOX inhibitory activities. 1-(4-Aminosulfonylphenyl)-5-[4-(1-difluoromethyl-1,2-dihydropyrid-2-one)]-3-trifl uoromethyl-1H-pyrazole exhibited good anti-inflammatory (AI) activity (ED(50) = 27.7 mg/kg po) that compares favorably with the reference drugs celecoxib (ED(50) = 10.8 mg/kg po) and ibuprofen (ED(50) = 67.4 mg/kg po). The N-difluoromethyl-1,2-dihydropyridin-2-one moiety provides a novel 5-LOX pharmacophore for the design of cyclic hydroxamic mimetics for exploitation in the development of COX-2/5-LOX inhibitory AI drugs.

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Binding Properties

Drug	Target	Property	Measurement	pH	Temperature (°C)
Celecoxib	Prostaglandin G/H synthase 2	IC 50 (nM)	120	N/A	N/A	Details