N-[(alkylkamino)alkyl]-4,5-diaryl-1H-pyrazole-1-acetamides of formula
or acid-addition salt thereof wherein R¹ is hydrogen or lower-alkyl; R² and R³ are independently hydrogen, lower-alkyl, or hydroxy lower-alkyl, or R² and R³ together form a straight or branched alkylene chain of four to six carbons; A is CH₂CH(OH)CH₂ or (CH₂)n wherein n is an integer from two to eight; Ar¹ and Ar² are independently pyridinyl, phenyl, or phenyl substituted with methoxy, hydroxy or halogen; and at least one of Ar¹ and Ar² is pyridinyl, useful for treating cardiac arrhythmias in mammals, are prepared by reacting a lower-alkyl ester of pyrazole-1-acetic acid with an appropriate diamine.
式中的 N-[(烷基
氨基)烷基]-4,5-二基-1H-
吡唑-1-乙酰胺或其酸加盐
或其酸加成盐 其中 R¹ 是氢或低级烷基;R² 和 R³ 独立地是氢、低级烷基或羟基低级烷基,或 R² 和 R³ 共同形成四至六个碳原子的直链或支链亚烷基链;A 是 CH₂CH(OH)CH₂ 或 (CH₂)n,其中 n 是二至八的整数;Ar¹ 和 Ar² 独立地为
吡啶基、苯基或被甲氧基、羟基或卤素取代的苯基;且 Ar¹ 和 Ar² 中至少有一个为
吡啶基,用于治疗哺乳动物的心律失常。