The invention relates to compounds according to Formula I:
or a pharmaceutically acceptable salt thereof, wherein m, n, R
1
, R
2
, R
3
, R
4
, R
5
, x and y are as defined herein. Compounds according to Formula I are pharmacologically effective as potassium channel inhibitors, in particular inhibitors of the acetylcholine operated inward rectifying potassium channel current (i.e. IKACh blockers), and are believed to be useful in the treatment of cardiac arrhythmias, in particular supraventricular tacharrhythmias, such as atrial fibrillation and atrial flutter.
本发明涉及以下式I的化合物或其药学上可接受的盐,其中m、n、R1、R2、R3、R4、R5、x和y的定义如本文所述。式I的化合物作为
钾通道
抑制剂具有药理学作用,特别是
乙酰胆碱操作的内向整流
钾通道电流(即IKACh阻滞剂),并被认为在治疗心律失常方面有用,特别是上室性心动过速,如心房颤动和心房扑动。