1048955-49-2Relevant articles and documents
Synthesis of 8-substituted xanthines via 5,6-diaminouracils: an efficient route to A2A adenosine receptor antagonists
Dong, Ma,Sitkovsky, Mikhail,Kallmerten, Amy E.,Jones, Graham B.
, p. 4633 - 4635 (2008)
A one-pot route to 8-substituted xanthines has been developed from 5,6-diaminouracils and carboxaldehydes. The process, promoted by (bromodimethyl)sulfonium bromide, is mild and efficient and eliminates the need for external oxidants. Yields are good and the process is applicable to a range of substrates including a family of A2A adenosine receptor antagonists. Preparation of a new analog of the antagonist KW-6002 is presented, and in situ bromination of aryl substituted products demonstrated.