Adenosine A2A Receptor as a Drug Discovery Target

Design, synthesis and evaluation of N6-substituted 2-aminoadenosine-5′-N-methylcarboxamides as A3 adenosine receptor agonists

A series of N⁶-substituted 2-aminoadenosine-5′-N-methylcarboxamides were synthesized from the versatile intermediate, O⁶-(benzotriazol-1-yl)-2-amino-2′,3′-O-isopropylideneinosine-5′-N-methylcarboxamide (1) and evaluated as A₃ adenosine receptor agonists.

Crystal structures of the A2A adenosine receptor and their use in medicinal chemistry

New insights into drug design are derived from the X-ray crystallographic structures of G protein-coupled receptors (GPCRs), and the adenosine receptors (ARs) are at the forefront of this effort. The 3D knowledge of receptor binding and activation promises to enable drug discovery for GPCRs in general, and specifically for the ARs. The predictability of modeling based on the X-ray structures of the A_2AAR has been well demonstrated in the identification, design and modification of both known and novel AR agonists and antagonists. It is expected that structure-based design of drugs acting through ARs will provide new avenues to clinically useful agents.