申请人:STERLING DRUG INC.
公开号:EP0388659A1
公开(公告)日:1990-09-26
N-[(disubstituted amino)alkyl]-3,4 or 5-aryl-1H-pyrazole-1-acetamides of formula
or acid-addition salt thereof wherein R¹ is hydrogen or lower-alkyl; R² is hydrogen, hydroxy, lower-alkyl, lower-alkoxy, lower-alkylamino, lower-alkylamido, lower-alkylsufonamido, nitro, amino, cyano, or halo; R³ and R⁴ are independently hydrogen, lower-alkyl or hydroxy lower-alkyl, or R³ and R⁴ together form a straight or branched alkylene chain of four to six carbons; and n is an integer from two to eight, 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-[(二取代氨基)烷基]-3、4 或 5-芳基-1H-吡唑-1-乙酰胺或其酸加成盐 其中 R¹ 是氢或低级烷基;R² 是氢、羟基、低级烷基、低级烷氧基、低级烷基氨基、低级烷氨基、低级烷磺酰氨基、硝基、氨基、氰基或卤素;R³ 和 R⁴ 独立地为氢、低级烷基或羟基低级烷基,或 R³ 和 R⁴ 共同形成四至六个碳原子的直链或支链亚烷基链;且 n 为二至八的整数。