N-[(alkylamino)alkyl]-3,4(or 4,5)-diaryl-1H-pyrazole-1-(branched)alkanamides and pyrazole-1-alkanamines useful for treating cardiac arrhythmias in mammals, are prepared by reacting a lower-alkyl ester of pyrazole-1-acetic acid with an appropriate diamine followed by reduction or by reacting the anion of a lower-alkyl ester of a pyrazole-1-acetic acid with an alkylating agent followed by displacement of the ester by an appropriate amine.
N-[(烷基
氨基)烷基]-3,4(或4,5)-二芳基-1H-
吡唑-1-(支链)烷酰胺和
吡唑-1-烷基胺可用于治疗哺乳动物的心律失常,其制备方法为:将
吡唑-1-乙酸的较低烷基酯与适当的二胺反应,然后还原,或将较低烷基
吡唑-1-乙酸酯的阴离子与烷基化剂反应,然后通过适当的胺置换酯基。