The Parkinson Pipeline Project has been tracking a number of adenosine receptor antagonists in the pipeline. BIIB014 is the furthest along ,except for KW6002 (no longer available for trials in the U.S.), but o think they are talking about registering a Phase III trial. You can find out about this one and the others in the PPP database. Registration is no longer required.
Go to pdpipeline.org
Click on Database Access
On the Scorecard click on the Treatment Class heading. Scroll down. All of the adenisone receptor antagonists will be listed together.
Click on the treatment name for the database record.