Effect of structural modification of enol-carboxamide-type nonsteroidal antiinflammatory drugs on COX-2/COX-1 selectivity.
Article Details
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Lazer ES, Miao CK, Cywin CL, Sorcek R, Wong HC, Meng Z, Potocki I, Hoermann M, Snow RJ, Tschantz MA, Kelly TA, McNeil DW, Coutts SJ, Churchill L, Graham AG, David E, Grob PM, Engel W, Meier H, Trummlitz G
Effect of structural modification of enol-carboxamide-type nonsteroidal antiinflammatory drugs on COX-2/COX-1 selectivity.
J Med Chem. 1997 Mar 14;40(6):980-9.
- PubMed ID
- 9083488 [ View in PubMed]
- Abstract
Meloxicam (5), an NSAID in the enol-carboxamide class, was developed on the basis of its antiinflammatory activity and relative safety in animal models. In subsequent screening in microsomal assays using human COX-1 and COX-2, we discovered that it possessed a selectivity profile for COX-2 superior to piroxicam and other marketed NSAIDs. We therefore embarked on a study of enol-carboxamide type compounds to determine if COX-2 selectivity and potency could be dramatically improved by structural modification. Substitution at the 6- and 7-positions of the 4-oxo-1,2-benzothiazine-3-carboxamide, alteration of the N-methyl substituent, and amide modification were all examined. In addition we explored several related systems including the isomeric 3-oxo-1,2-benzothiazine-4-carboxamides, thienothiazines, indolothizines, benzothienothiazines, naphthothiazines, and 1,3- and 1,4-dioxoisoquinolines. While a few examples were found with greater potency in the COX-2 assay, no compound tested had a better COX-2/COX-1 selectivity profile than that of 5.
DrugBank Data that Cites this Article
- Binding Properties
Drug Target Property Measurement pH Temperature (°C) Meloxicam Prostaglandin G/H synthase 2 IC 50 (nM) 490 N/A N/A Details Nimesulide Prostaglandin G/H synthase 2 IC 50 (nM) 9400 N/A N/A Details