A novel nitrogenous fused bicyclic compound represented by the following general formula [1] or a pharmacologically acceptable salt of the compound. They have excellent SK channel blocking activity and are useful as a medicine. [I] (In the formula, R
0
represents hydrogen, halogeno, etc.; R
1
represents a group represented by the formula (a) or (b); A represents a group represented by the formula (X) or (Y); D
1
, D
2
and D
3
each represents N or CH; R
2
represents halogeno or optionally halogenated lower alkyl, etc.; R
3
represents hydrogen or lower alkyl; and Q represents lower alkylene.)
下面是一种新型的含氮融合
双环化合物,其通式如下[1],或其药理学上可接受的盐。它们具有出色的SK通道阻滞活性,是一种有用的药物。[I](在公式中,R0代表氢,卤素等; R1代表由公式(a)或(b)表示的基团; A代表由公式(X)或(Y)表示的基团; D1,D2和D3分别表示N或CH; R2代表卤素或可选卤代的低碳基等; R3代表氢或低碳基; Q代表低碳链基)。