| abstract |
The present invention provides an antiarrhythmic agent having an improved action profile. General formula I [Wherein R 1 , R 2 and R 3 each represent a lower alkyl group, or R 2 and R 3 together form an alkylene chain; R 4 represents a nitro group, a cyano group, Represents an alkoxycarbonyl group or an imidazolyl group; R 5 represents a hydrogen atom or a halogen atom; An antiarrhythmic agent comprising a 3-phenylsulfonyl-3,7-diazabicyclo [3,3,1] nonane compound represented by the formula: [Selection figure] None |