The present invention provides a novel a condensed polycyclic compound useful as a phosphodiesterase 4 inhibitor, which is shown by the formula [I]:
1
or a pharmaceutically acceptable salt thereof and a pharmaceutical composition containing the same.
本发明提供了一种新型的紧凑
多环化合物,用作
磷酸二酯酶4
抑制剂,其由式(I)所示:其中R1,R2,R3,R4,R5和R6如上所述,或其药学上可接受的盐,并且还提供了含有该化合物的制药组合物。