Synthesis of imidazo[1,2-c]pyrazolo[4,3-e]pyrimidines, pyrazolo[4,3-e]1,2,4-triazolo[1,5-c]pyrimidines and 1,2,4-triazolo[5,1-i]purines: New potent adenosine A2 receptor antagonists

Article abstract of DOI:10.1016/0223-5234(93)90087-U

A number of 2- or 4-fluorobenzylderivatives of imidazo[1,2-c]pyrazolo[4,3-e]pyrimidine, pyrazolo[4,3-e]1,2,4-triazolo[1,5-c]pyrimidine and 1,2,4-triazolo[5,1-i] purine have been synthesized. The interaction with the adenosine A₂ and A₁