2,3-Disubstituted pyridine derivative, process for the preparation thereof, pharmaceutical composition containing the same, and intermediate therefor
申请人:——
公开号:US20030199554A1
公开(公告)日:2003-10-23
A compound of the formula (I)
1
wherein A is O, S, CHR
1
or NR
2
, R
1
and R
2
are H, lower alkyl, X
1
and X
2
are H, halogen, nitro, cyano, etc., Y
1
is H, lower alkyl, Z
1
and Z
2
are H, halogen, cyano, hydroxy, lower alkyl, etc., and n is an integer of 2 to 4, a pharmaceutically acceptable salt thereof, a process for preparing the same, a pharmaceutical composition containing the same as an active ingredient, and an intermediate therefor. The compounds (I) of the present invention show a potent PDE IV inhibitory activity as well as an excellent bronchodilating activity, and hence, they are widely useful as a PDE IV inhibitor in the treatment or prophylaxis of allergic inflammatory diseases or organ inflammatory diseases, especially in the treatment or prophylaxis of pulmonary diseases accompanied by airway obstruction such as asthma.
化合物的公式(I)其中A为O、S、CHR1或NR2,R1和R2为H、低碳基,X1和X2为H、卤素、硝基、
氰基等,Y1为H、低碳基,Z1和Z2为H、卤素、
氰基、羟基、低碳基等,n为2到4的整数,其药学上可接受的盐,制备该化合物的方法,含有该化合物作为活性成分的制药组合物,以及其中间体。本发明的化合物(I)具有强大的PDE IV抑制活性以及优异的支气管扩张活性,因此,它们广泛用于作为PDE IV
抑制剂治疗或预防过敏性炎症性疾病或器官炎症性疾病,特别是治疗或预防伴有气道阻塞的肺部疾病,如哮喘。