| 摘要 |
<p>Compounds of formula (I):or stereoisomers or pharmaceutically acceptable salts thereof, wherein W, R1,R 2 and R3 have the meanings as indicated in the specification, are useful for treating conditions mediated by activation of the adenosine A<sub>2A</sub> receptor, especially inflammatory or obstructive airways diseases. Pharmaceutical compositions that contain the compounds and a process for preparing the compounds are also described.</p> |
