The present invention provides a novel benzodiazepine compound that blocks the I
Kur
current or the Kv1.5 channel potently and more selectively than other K
+
channels. The benzodiazepine compound of the invention is represented by General Formula (1)
wherein R
1
, R
2
, R
3
, and R
4
are each independently hydrogen or lower alkyl; R
2
and R
3
may be linked to form lower alkylene;
A
1
is lower alkylene optionally substituted with one or more hydroxy; and
R
5
is group represented by
wherein R
6
and R
7
are each independently hydrogen or organic group;
X
A
and X
B
are each independently bond, lower alkylene, etc.
本发明提供了一种新型
苯二
氮平化合物,能够有效地阻断IKur电流或Kv1.5通道,比其他K+通道更具选择性。本发明的
苯二
氮平化合物由通式(1)表示,其中R1、R2、R3和R4各自独立地为
氢或低
碳基;R2和R3可以连接形成低
碳链;A1为低
碳链,可选地取代一个或多个羟基;R5为由下式表示的基团:其中R6和R7各自独立地为
氢或有机基团;XA和XB各自独立地为键,低
碳链等。