Derivatives of .gamma.-butyrolactone with an anti-arrythmic activity and compositions

Abstract

The present invention relates to the products of general formula: ##STR1## in which: R represents a straight or branched alkyl group having from 2 to 5 atoms of carbon, or the group ##STR2## represents a morpholino or piperidino group possibly substituted by 1 or 2 methyl groups; n=2 or 3; R.sub.1 and R.sub.2 considered independently each represent hydrogen or a lower alkyl group (1 to 4 carbon atoms) or R.sub.1 and R.sub.2 taken together represent a (CH.sub.2).sub.m group where m=4 or 5, R.sub.3 being equal to H or R.sub.1 is H and R.sub.2 and R.sub.3 considered together represent (CH.sub.2).sub.p where p is 3 or 4 the butyrolactone cycle substitutes the pyridyl group in 2', 3' or 4' position, the salts, isomers and mixtures of isomers of said products; and to a process for preparing said products and to the myocardium-protecting drugs containing same.

Dependencies are inferred from the claim text.