| abstract |
[PROBLEMS] To provide a therapeutic agent for diseases such as neuropathic pain, nociceptive pain, inflammatory pain, small-diameter neuropathy, erythema limb pain, paroxysmal pain, dysuria, or multiple sclerosis. A benzoxazolone compound represented by formula (1) or a pharmaceutically acceptable salt thereof [R1 and R2 are each independently H or C1-6 alkyl (wherein alkyl is hydroxy, C1-4 alkylsulfonyl, L may be C1-6 alkylene; R3 is C1-6 alkyl, C3-7 cycloalkyl (wherein the cycloalkyl is halogen or hydroxy, etc.). Optionally substituted), C6-10 aryl (wherein the aryl may be substituted by halogen, C1-4 alkyl or C1-4 haloalkyl, etc.); R4 is H, halogen or C1-4 alkyl] Selection diagram] None |