| abstract |
Pharmaceutical compositions which comprise a compound of the formula (I): ##STR1## or a salt thereof wherein NR 2 represents a piperidyl, pyrrolidyl, morpholino or N-methyl-piperazyl group any of which may substituted by one or two methyl groups; R 1 represents fluorine, chlorine, bromine, iodine, lower alkoxyl, hydroxyl, acetoxyl, nitro, cyano, amino, dimethylamino, lower alkyl, trifluoromethyl, methylthio, ethylthio, methoxycarbonyl, ethoxycarbonyl, acetamido or carboxamido; R 2 represents hydrogen, flurorine, chlorine, bromine, iodine, lower alkoxyl, hydroxyl, lower alkyl; R 3 represents hydrogen, chlorine or lower alkyl; or R 1 and R 2 when on adjacent carbon atoms may together represent a polymethylene group containing from 3 to 5 carbon atoms; and n is 2, 3 or 4; and a pharmaceutically acceptable carrier, compounds of formula (I) except those wherein R 1 is a 2-methoxyl group, and 2,4-dimethyl-1-[2-(4-bromophenylsulphonamido)ethyl]pyrrolidine and 2,4-dimethyl-1-[2-(4-bromophenylsulphonamido)ethyl]pyrrolidine, a process for the preparation of compounds of the formula (I) and 2,4-dimethyl-1-[2-(4-bromophenylsulphonamido)ethyl]pyrrolidine and 2,4-dimethyl-1-[2-(4-iodophenylsulphonamido) ethyl]pyrrolidine as anti-arrhythymic agents. |