Antagonists of the human adenosine A2A receptor. Part 1: Discovery and synthesis of thieno[3,2-d]pyrimidine-4-methanone derivatives.
Gillespie RJ., Adams DR., Bebbington D., Benwell K., Cliffe IA., Dawson CE., Dourish CT., Fletcher A., Gaur S., Giles PR., Jordan AM., Knight AR., Knutsen LJS., Lawrence A., Lerpiniere J., Misra A., Porter RHP., Pratt RM., Shepherd R., Upton R., Ward SE., Weiss SM., Williamson DS.
The (-)-(11R,2'S)-enantiomer of the antimalarial drug mefloquine has been found to be a reasonably potent and moderately selective adenosine A(2A) receptor antagonist. Further investigation of this compound has led to the discovery of a series of keto-aryl thieno[3,2-d]pyrimidine derivatives, which are potent and selective antagonists of the adenosine A(2A) receptor. These derivatives show selectivity against the A(1) receptor. Furthermore, some of these compounds have been shown to have in vivo activity in a commonly used model, suggesting the potential for the treatment of Parkinson's disease.