The purpose is to provide selective PDE IV inhibitors which have a potent anti-asthmatic profile with excellent safety. A compound of the formula (1):
wherein A is methylene, lower alkylmethylene, carbonyl, etc., Y is a 5- or 6-membered heteroaryl group containing one or two heteroatoms selected from nitrogen, sulfur and oxygen, Z is i) a fused ring in which any of 5- or 6-membered heteroaryl groups is fused to a benzene ring, or ii) a phenyl group which may be unsubstituted or optionally substituted with one or more members selected from the group consisting of nitro, amino, an amino nitrogen-containing group, etc., provided that when A is methylene, Y is a 5- or 6-membered heteroaryl group selected from the group consisting of pyrrolyl, pyridyl, etc., and Z is a phenyl group which may be unsubstituted or substituted, the substituent on said phenyl group is amino, or an amino nitrogen-containing group; or a pharmaceutically acceptable salt thereof, possesses excellent PDE IV inhibition and is useful as a pharmaceutical drug, preferably an anti-asthmatic, etc.
本发明旨在提供具有强效抗哮喘特性和优良安全性的选择性PDE IV
抑制剂。化合物的结构式(1):其中A为亚甲基,低碳基亚甲基,羰基等,Y为含有一或两个从氮,
硫和氧中选择的杂原子的5或6元杂芳基基团,Z为i)融合环,其中任何5或6元杂芳基团融合到苯环上,或ii)苯基,可以是未取代的或可选地取代一个或多个来自硝基,
氨基,含
氨基氮的基团等的成员所选择的,但当A为亚甲基,Y为从
吡咯基,
吡啶基等所选择的5或6元杂芳基团,Z为未取代或取代的苯基时,所述苯基上的取代基为
氨基或含
氨基氮的基团; 或其药学上可接受的盐,具有出色的PDE IV抑制作用,并且作为药物,特别是抗哮喘药物等非常有用。