.alpha.-(1-R-3-Azetidinyl)-.alpha.-phenyl-.alpha.-substituted-acetamides and -acetonitriles represented by the following formula: ##STR1## wherein R represents hydrogen, lower alkyl, lower cycloalkyl or phenyllower alkyl, R.sup.1 represents phenyl or 2-pyridyl, and Y is carbamoyl or cyano having antiarrhythmic activity are disclosed. Pharmaceutically acceptable acid addition salts of the free bases and quaternary salts are included as part of the invention.
以下
化学式代表的.alpha.-(1-R-3-
吡嗪基)-.alpha.-苯基-.alpha.-取代醯胺和-
乙腈,其中R代表氢、低烷基、低环烷基或苯基低烷基,R.sup.1代表苯基或2-
吡啶基,Y为具有抗心律失常活性的羰胺基或
氰基。该发明还包括所述自由碱的药用可接受的酸盐和季
铵盐。