New strategies for the synthesis of A3 adenosine receptor antagonists
作者:P Baraldi
DOI:10.1016/s0968-0896(03)00484-x
日期:2003.9.15
perform a rapid and a convenient divergent synthesis. A further improvement allowed the regioselective preparation of the N(8)-substituted compound 7. This method could be used as an helpful general procedure for the design of novel A(3) adenosine receptor antagonists without the difficulty of separating the N(8)-substituted pyrazolo[4,3-e]1,2,4-triazolo[1,5-c]pyrimidines from the corresponding N(7)-isomers