Novel diamine derivatives

摘要

A compound of the following general formula or a salt thereof <IMAGE> (wherein R1 and R2 which may be the same or different are each an alkyl group having 1 to 3 carbon atoms; R3 is a hydrogen atom or an alkyl group having 1 to 3 carbon atoms; R4 and R5 which may be the same or different are each a hydrogen atom or an alkyl group having 1 to 8 carbon atoms; m and n which may be the same or different are ach an integer of 1 to 7; provided that R4 and R5 are not a hydrogen atom at the same time), and a process of preparing the same are disclosed. The compound is sueful in the treatment of arrythmias because it exhibits desirably strong effects for treating arrythmias and minimum undesirable side effects.