- DIAZEPINEDIONE DERIVATIVE
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A diazepinedione derivative represented by the formula (I) or a pharmacologically acceptable salt thereof is used as a P2X4 receptor antagonist: wherein R1 represents a hydrogen atom, an alkyl group having' 1 to 8 carbon atoms, or the like, R2 and R3 represent a hydrogen atom, an alkyl group having 1 to 8 carbon atoms, a halogen atom, or the like, R4 and R5 represent a hydrogen atom, an alkyl group having 1 to 8 carbon atoms, or the like, and W represents tetrazole or the like.
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