Abstract: The present invention provides a compound of formula (I) or a pharmaceutically acceptable salt thereof: wherein A is hydrogen, C1-4alkyl, C3-6cycloalkyl, C1-3alkoxy, C1-3alkoxy C1-4alkyl, C1-2fluoroalkyl, halogen, NR6R7, optionally substituted heteroaryl (Het), or optionally substituted phenyl, and R1, R2, R3, R4, R5, R6 and R7 are as defined in the description. The compounds or salts are thought to modulate P2X7 receptor function and to be capable of antagonizing the effects of ATP at the P2X7 receptor. The invention also provides the use of the compound or salt in the treatment or prophylaxis of, for example, inflammatory pain, neuropathic pain, visceral pain, rheumatoid arthritis or osteoarthritis or neurodegenerative disorders.

Abstract: The present invention provides a compound of formula (I) or a pharmaceutically acceptable salt thereof: wherein A is hydrogen, C1-4alkyl, C3-6cycloalkyl, C1-3alkoxy, C1-3alkoxy C1-4alkyl, C1-2fluoroalkyl, halogen, NR6R7, optionally substituted heteroaryl (Het), or optionally substituted phenyl, and R1, R2, R3, R4, R5, R6 and R7 are as defined in the description. The compounds or salts are thought to modulate P2X7 receptor function and to be capable of antagonizing the effects of ATP at the P2X7 receptor. The invention also provides the use of the compound or salt in the treatment or prophylaxis of, for example, inflammatory pain, neuropathic pain, visceral pain, rheumatoid arthritis, osteoarthritis or neurodegenerative disorders.

Abstract: The present invention provides a compound of formula (I) or a pharmaceutically acceptable salt thereof: wherein A is hydrogen, C1-4alkyl, C3-6cycloalkyl, C1-3alkoxy, C1-3alkoxy C1-4alkyl, C1-2fluoroalkyl, halogen, NR6R7, optionally substituted heteroaryl, or optionally substituted phenyl, and R1, R2, R3, R4, R5, R6 and R7 are as defined in the description. The compounds or salts are thought to modulate P2X7 receptor function and to be capable of antagonizing the effects of ATP at the P2X7 receptor. The invention also provides the use of the compound or salt in the treatment or prophylaxis of, for example, inflammatory pain, neuropathic pain, visceral pain, rheumatoid arthritis or osteoarthritis or neurodegenerative disorders.

Abstract: The present invention provides a compound of formula (I) or a pharmaceutically acceptable salt thereof: wherein A is hydrogen, C1-4alkyl, C3-6cycloalkyl, C1-3alkoxy, C1-3alkoxy C1-4alkyl, C1-2-fluoroalkyl, halogen, NR6R7, optionally substituted heteroaryl, or optionally substituted phenyl, and R1, R2, R3, R4, R5, R6 and R7 are as defined in the description. The compounds or salts are thought to modulate P2X7 receptor function and to be capable of antagonizing the effects of ATP at the P2X7 receptor. The invention also provides the use of the compound or salt in the treatment or prophylaxis of, for example, inflammatory pain, neuropathic pain, visceral pain, rheumatoid arthritis, osteoarthritis or neurodegenerative disorders.

Abstract: 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 for the treatment of pain, inflammation, rheumatoid arthritis, osteoarthritis, or a neurodegenerative disease.

Abstract: The present invention provides a compound of Formula (IA) or a pharmaceutically acceptable salt thereof: wherein R1 represents C1-4 alkyl, C2-6 alkenyl, C2-6 alkynyl, C3-6 cycloalkyl, C3-6 cycloalkylmethyl-, phenyl-X— or heteroaryl, any of which may be optionally substituted; X represents —(CR12R13)n—; n represents 0 to 2; and R7, R8, R9, R10 and R11 independently represent H, halogen, or cyano; or optionally substituted C1-6 alkyl, C2-6 alkenyl, C2-6 alkynyl or C3-6 cycloalkyl; such that at least two of R7, R8, R9, R10 and R11 represent a group other than H and at least one of R7 and R11 represents a group other than H; and wherein the compound is other than N-[(2,4-dichlorophenyl)methyl]5-oxo-1-(phenylmethyl)-3-pyrrolidinecarboxamide. The compounds and salts are thought to modulate P2X7 receptor function and be capable of antagonizing the effects of ATP at the P2X7 receptor.

Abstract: The present invention relates to a compound of formula (I) or a pharmaceutically acceptable salt thereof: The compounds or salts modulate P2X7 receptor function and are capable of interfering with the effects of ATP at the P2X7 receptor. The invention also provides the use of such compounds or salts, or pharmaceutical compositions thereof, in the treatment or prevention of disorders mediated by the P2X7 receptor, for example pain, inflammation or a neurodegenerative disease, in particular pain such as inflammatory pain, neuropathic pain or visceral pain.