Substituted heterocycles, their use as medicament, and pharmaceutical preparations comprising them

摘要

The invention relates to compounds of formula I in which A, R1, R2, R3, R4, R5, R6, R7 and n have the meanings stated in the claims. The compounds are particularly suitable as antiarrhythmic active ingredients, in particular for the treatment and prophylaxis of atrial arrhythmias, for example atrial fibrillation (AF) or atrial flutter.