This invention provides a group of antiarrhythmic agents of the formula: ##STR1## in which R.sub.1 is --CO.sub.2 H, --CO.sub.2 (CH.sub.2).sub.n --NR.sub.4 R.sub.5, --CONR.sub.6 R.sub.7, --NHCO.sub.2 R.sub.8 or --NHCO.sub.2 (CH.sub.2).sub.o --NR.sub.9 R.sub.10 where R.sub.4 and R.sub.5 are H or alkyl of 1 to 6 carbon atoms and n is 1 to 6; R.sub.6 and R.sub.7 are H or alkyl of 1 to 6 carbon atoms; R.sub.8 is alkyl of 1 to 6 carbon atoms; and R.sub.9 and R.sub.10 are alkyl of 2 to 6 carbon atoms and o is 1 to 6; R.sub.2 and R.sub.3 are, independently, hydrogen or alkyl of 1 to 6 carbon atoms; and m is one of the integers 1, 2, 3 or 4; or a pharmaceutically acceptable salt thereof, and a method for their use.
这项发明提供了一组
抗心律失常药物,其
化学式为:##STR1##其中R.sub.1为--CO.sub.2 H,--CO.sub.2 (CH.sub.2).sub.n --NR.sub.4 R.sub.5,--CONR.sub.6 R.sub.7,--NHCO.sub.2 R.sub.8或--NHCO.sub.2 (CH.sub.2).sub.o --NR.sub.9 R.sub.10,其中R.sub.4和R.sub.5为H或含有1至6个碳原子的烷基,n为1至6;R.sub.6和R.sub.7为H或含有1至6个碳原子的烷基;R.sub.8为含有1至6个碳原子的烷基;R.sub.9和R.sub.10为含有2至6个碳原子的烷基,o为1至6;R.sub.2和R.sub.3分别为氢或含有1至6个碳原子的烷基;m为1、2、3或4中的一个整数;或其药用盐,以及其使用方法。