abstract |
FIELD: organic chemistry, cardiology, pharmacy. n SUBSTANCE: invention describes compounds of the formula (I) n wherein R 1 , R 2 , R 3 and R a -R h have values given in the description. Proposed compounds are useful in prophylaxis and treatment of arrhythmia, in particular, atrial and ventricular arrhythmia, Also, the invention relates to methods for preparing compounds of the formula (I) and intermediate compounds. n EFFECT: valuable medicinal properties of compounds. n 41 cl, 1 tbl, 8 ex |