Compounds, which are potent inhibitors of Na⁺ /Ca²⁺ exchange mechanism and are useful in the treatment of arrhythmias

摘要

Therapeutically active compounds of formula (I):; wherein the variables shown in formula (I) are defined in the disclosure; and pharmaceutically acceptable salts and esters thereof. The compounds are potent inhibitors of the Na⁺/Ca²⁺ exchange mechanism.