Design, synthesis and binding affinity of 3′-fluoro analogues of Cl-IB-MECA as adenosine A3 receptor ligands
摘要:
Several 3'-fluoro analogues, la, 1b, and le of selective and potent adenosine A(3) receptor agonist, Cl-IB-MECA were synthesized from D-xylose via highly regioselective opening of lyxo-epoxides, 8a and 811 with fluoride anion. Compared to the high binding affinity of Cl-IB-MECA to the A(3) adenosine receptor, the corresponding 3-fluoro derivative showed remarkably decreased binding affinity, indicating that 3'-hydroxyl group acts as hydrogen bonding acceptor, not hydrogen bonding donor like fluorine atom in binding to the A(3) adenosine receptor. (C) 2003 Elsevier Science Ltd. All rights reserved.
Design and Synthesis of A3Adenosine Receptor Ligands, 3′-Fluoro Analogues of Cl-IB-MECA
摘要:
Synthesis of 3'-deoxy-3'-fluoro-N-6-substituted adenosines as bioisosteres of Cl-IB-MECA and their binding affinities to A(3) adenosine receptor are described.