Synthesis and Cardiotropic Activity of 1-(Methoxybenzyl)-4-{2-[(Methoxybenzyl)-Amino]Ethyl}Piperazines

A group of new 1-(methoxybenzyl)-4-{2-[(methoxybenzyl)amino]ethyl}piperazines (1) were synthesized. The relationship of the structure of the triazaalkane linker and the cardiotropic activity in a series of these compounds was compared with that of previously studied linear and cyclic methoxyphenyltriazaalkanes. The most active compound in the group was 1e (1-(3,4,5-trimethoxybenzyl)-4-{2-[(3,4,5-trimethoxybenzyl)amino] ethyl}piperazine trihydrochloride) with statistically significant antiarrhythmic activity in aconitine and CaCl2 arrhythmia models.