Pyrazolo Derivatives as Potent Adenosine Receptor Antagonists: An Overview on the Structure-Activity Relationships

Figure 3

Structures of (a) N⁶-(substituted arylcarbamoyl) adenosine-5′-uronamide as A₃ AR agonist; (b) pyrazolo-triazolo-pyrimidines as A₃ AR antagonists.