Antagonists of the human adenosine A2A receptor.: Part 3:: Design and synthesis of pyrazolo[3,4-d]pyrimidines, pyrrolo[2,3-d] pyrimidines and 6-arylpurines
A series of pyrazolo[3,4-d]pyrimidine, pyrrolo[2,3-d]pyrimidine and 6-arylpurine adenosine A(2A) antagonists is described. Many examples were highly selective against the human A(1) receptor sub-type and were active in an in vivo model of Parkinson's disease. (C) 2008 Elsevier Ltd. All rights reserved.