Synthesis of 8-substituted xanthines via 5,6-diaminouracils: an efficient route to A2A adenosine receptor antagonists
作者:Ma Dong、Mikhail Sitkovsky、Amy E. Kallmerten、Graham B. Jones
DOI:10.1016/j.tetlet.2008.05.071
日期:2008.7
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
An efficient route to xanthine based A2A adenosine receptor antagonists and functional derivatives
作者:Paul LaBeaume、Ma Dong、Michail Sitkovsky、Elizabeth V. Jones、Rhiannon Thomas、Sara Sadler、Amy E. Kallmerten、Graham B. Jones
DOI:10.1039/c003382k
日期:——
A one-pot route to 8-substituted xanthines has been developed from 5,6-diaminouracils and carboxaldehydes. Yields are good and the process applicable to a range of substrates including a family of A2A adenosine receptor antagonists. A new route to the KW-6002 family of antagonists is presented including a pro-drug variant, and application to related image contrast agents developed.