Compounds of formula I
in free or salt form, wherein R
1
, R
2
and R
3
have the meanings as indicated in the specification, are useful for treating conditions mediated by of phosphodiesterase type 4 or the down-regulation or inhibition of TNF-α release, particularly obstructive or inflammatory airways diseases. Pharmaceutical compositions that contain the compounds and processes for preparing the compounds are also described.
公式I中自由或盐形式的化合物,其中R1,R2和R3具有规范中所示的含义,可用于治疗由
磷酸二酯酶4型介导的疾病或TNF-α释放的下调或抑制,特别是阻塞性或炎症性空气道疾病。还描述了包含该化合物的制药组合物和制备该化合物的过程。