| abstract |
The present invention provides a quinolone compound represented by the general formula (1) or a salt thereof, wherein R4 represents a hydrogen atom, etc.; R2 represents a hydrogen atom, etc.; R3 represents a phenyl group optionally substituted or more substituents, etc.; R4 represents a halogen atom; R5 represents a hydrogen atom or a halogen atom; R6 represents a hydrogen atom and R7 represents a hydroxyl atom, etc. Quinolone compounds have a functional improvement effect; Which suppresses progression of neurological dysfunction by inhibiting the chronic progression of Parkinson's disease or protecting dopamine neurons from the disease aetiology, thus prolonging the period before beginning the first administration. |