An aromatic nitrogen-containing 6-membered cyclic compound of the formula (I):
1
wherein Ring A is a substituted or unsubstituted nitrogen-containing heterocyclic group; R
1
is a substituted or unsubstituted lower alkyl group, —NH—Q—R
3
(R
3
is a substituted or unsubstituted nitrogen containing heterocyclic group, and Q is a lower alkylene group or a single bond), or —NH—R
4
(R
4
is a substituted or unsubstituted cycloalkyl group); R
2
is a substituted or unsubstituted aryl group; one of Y and Z is ═CH—, and the other is ═N—, or a pharmaceutically acceptable salt thereof, these compounds exhibiting excellent selective PDE V inhibitory activities, and hence, being useful in the prophylaxis or treatment of penile erectile dysfunction, etc.
一种芳香性氮含量的6元环化合物,
化学式为(I):其中环A是取代或未取代的含氮杂环基团;R1是取代或未取代的较低烷基基团,-NH-Q-R3(R3是取代或未取代的含氮杂环基团,Q是较低烷基烃基团或单键),或-NH-R4(R4是取代或未取代的环烷基基团);R2是取代或未取代的芳基团;Y和Z中的一个是═CH—,另一个是═N—,或其药学上可接受的盐,这些化合物表现出优异的选择性PDE V抑制活性,因此在预防或治疗阴茎勃起功能障碍等方面具有用处。