- 1-PHENYLPYRROLE COMPOUNDS
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The present invention comprises a compound for the prevention and/or treatment of cardiovascular diseases, nephropathy, fibrosis, primary aldosteronism or edema. The compound is of the following general formula (I): wherein R1 represents a C1 -C3 alkyl group; R2 represents a hydroxy -C1 -C4 alkyl group and the like; R3 represents a halogeno group, a halogeno-C1 -C3 alkyl group and the like; R4 represents a hydrogen atom, a halogeno group and the like,- R5 represents a sulfamoyl group or a C1-C3 alkylsulf onyl group; R6 represents a hydrogen atom, a halogeno group and the like] or an N-oxide, atropisomer of the foregoing, or pharmaceutically acceptable salt of the foregoing.
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Page/Page column 44
(2010/04/28)
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- 1,2-Diarylpyrroles as potent and selective inhibitors of cyclooxygenase- 2
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Series of 1,2-diarylpyrroles has been synthesized and found to contain very potent and selective inhibitors of the human cyclooxygenase-2 (COX-2) enzyme. The paper describes short and practical syntheses of the target molecules utilizing the Paal-Knorr reaction. Electrophilic substitution on 1 proceeds in a regioselective fashion, and the method was used to generate a number of tetrasubstituted pyrroles. Detailed SAR on the series has been studied by modifications of the aryl rings and the substituents in the pyrrole ring. Diarylpyrrole 1 is a very potent (COX-2, IC50 = 60 nm) and selective (COX-1/COX-2 = > 1700) inhibitor whereas the isomeric 2 is completely inactive against COX-2. Modifications of the substituents on the fluorophenyl ring in 1 yields very potent inhibitors of COX-2 (IC50 = 40- 80 nm) with excellent selectivity(1200 to >2500) vs COX-1, Analog 20 containing a sulfonamide group is an excellent inhibitor of COX-2 with an IC50 of 14 nm. Tetrasubstituted pyrroles containing groups such as COCF3, SO2CF3, or CH2OAr at position 3 in the pyrrole ring give excellent inhibitors (COX-2, IC50 = 30-120 nm). In vivo testing in the carrageenan- induced paw edema model in the rat establishes that the 1,2-diarylpyrroles are orally active antiinflammatory agents. Compound 3 is the most potent inhibitor of edema with an ED50 of 4.7 mpk.
- Khanna, Ish K.,Weier, Richard M.,Yu, Yi,Collins, Paul W.,Miyashiro, Julie M.,Koboldt, Carol M.,Veenhuizen, Amy W.,Currie, Jerry L.,Seibert, Karen,Isakson, Peter C.
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p. 1619 - 1633
(2007/10/03)
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