1146411-78-0Relevant articles and documents
4-BENZ0YL-1-SUBSTITUTED-PIPERAZIN-2-0NE DERIVATIVES AS P2X7 MODULATORS
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Page/Page column 51, (2009/05/28)
The invention provides a compound of formula (I) or a pharmaceutically acceptable salt thereof wherein: A is C1-6alkyl, C3-6cycloalkyl, -CH2-R6, -CHMe-R7, -CMe2-R7, or optionally substituted aryl; wherein, when A is optionally substituted aryl, said aryl group is optionally substituted with 1 to 3 substituents, which may be the same or different, selected from the group consisting of halogen, C1-6alkyl, -CF3, C1-4alkoxy, C1fluoroalkoxy, cyano, NR8R9; and pyridyl wherein the pyridyl is optionally substituted by one methyl; R1 is chlorine, fluorine, -CF3, cyano or C1-6alkyl; R2, R3 and R5 independently are hydrogen, fluorine, chlorine, -CF3, cyano or C1-6alkyl, such that at least one of R2, R3 and R5 is other than hydrogen; R4 is hydrogen. These compounds and salts are thought to be P2X7 receptor antagonists. The invention also provides the use of the compound or salt for the manufacture of a medicament for the treatment of pain, inflammation, rheumatoid arthritis, osteoarthritis, or a neurodegenerative disease.