Structure–activity relationships of thiazole and thiadiazole derivatives as potent and selective human adenosine A3 receptor antagonists
作者:Kwan-Young Jung、Soo-Kyung Kim、Zhan-Guo Gao、Ariel S Gross、Neli Melman、Kenneth A Jacobson、Yong-Chul Kim
DOI:10.1016/j.bmc.2003.10.041
日期:2004.2
adenosine A3 receptors. Molecular modeling study of conformation search and receptor docking experiments to investigate the dramatic differences of binding affinities between two regioisomers of thiadiazole analogues, (39) and (42), suggested possible binding mechanisms in the binding pockets of adenosine receptors.
4-(4-甲氧基苯基)-2-氨基噻唑和3-(4-甲氧基苯基)-5-氨基噻二唑衍生物已被合成并评估为人类腺苷A3受体的选择性拮抗剂。苯环 4 位的甲氧基和氨基噻唑和氨基噻二唑模板的 N-乙酰基或丙酰基取代显示出对人腺苷 A3 受体的结合亲和力和选择性的极大增加。本系列中最有效的 A3 拮抗剂,N-[3-(4-甲氧基-苯基)-[1,2,4] 噻二唑-5-基]-乙酰胺 (39),对人体的 Ki 值为 0.79 nM腺苷 A3 受体在参与腺苷 A3 受体信号转导途径之一的 cAMP 生物合成的功能测定中显示出拮抗特性。