| abstract |
The present invention provides a compound of formula (I) or a salt thereof, wherein R 1 , R 2 and R 3 are independently selected from hydrogen atom, fluorine atom, chlorine atom, bromine atom, C 1-6 alkyl, substituted by fluorine atom C 1-6 alkoxy etc.; R 4 and R 5 are independently selected from hydrogen atom, fluorine atom, chlorine atom, C 1-6 alkyl, C 1-6 alkoxy substituted by fluorine atom, etc.; R 6 and R 7 are independently selected from a hydrogen atom, a fluorine atom, methyl, ethyl, hydroxyl, etc.; and R 8 and R 9 are independently selected from a hydrogen atom, C 1-6 alkyl, etc., which can be used as An agent for preventing various types of epilepsy including partial seizures and/or generalized seizures. |