<i>N</i><sup>6</sup>-Cycloalkyl- and <i>N</i><sup>6</sup>-Bicycloalkyl-<i>C</i>5′(<i>C</i>2′)-modified Adenosine Derivatives as High-Affinity and Selective Agonists at the Human A<sub>1</sub> Adenosine Receptor with Antinociceptive Effects in Mice
作者:Palmarisa Franchetti、Loredana Cappellacci、Patrizia Vita、Riccardo Petrelli、Antonio Lavecchia、Sonja Kachler、Karl-Norbert Klotz、Ida Marabese、Livio Luongo、Sabatino Maione、Mario Grifantini
DOI:10.1021/jm801456g
日期:2009.4.23
N6-(endo-norborn-2-yl)adenosine derivatives, 5′-chloro-5′-deoxy-CPA (1) and 5′-chloro-5′-deoxy-(±)-ENBA (3) displayed the highest affinity in the subnanomolar range and relevant selectivity for hA1 vs the other human receptor subtypes. The higher affinity and selectivity of 5′-chloro-5′-deoxyribonucleoside derivatives 1 and 3 for hA1 AR vs hA3 AR compared to that of the parent 5′-hydroxy compounds CPA and (±)-ENBA
为了进一步研究新型有效和选择性的人A 1腺苷受体激动剂,我们合成了一系列5'-氯-5'-脱氧-和5'-(2-氟苯硫基)-5'-脱氧-N 6-环烷基(双环烷基)-取代的腺苷和2'- C-甲基腺苷衍生物。评价这些化合物对人A 1,A 2A,A 2B和A 3腺苷受体的亲和力和功效。在一系列N 6-环戊基和N 6-(内降冰片-2-基)腺苷衍生物中,5'-chloro-5'-deoxy-CPA(1)和5'-chloro-5'- deoxy-CPA(1) (±)-ENBA(3)显示出在亚纳摩尔范围内的最高亲和力和对hA 1的选择性相对于其他人类受体亚型。5'-chloro-5'-脱氧核糖核苷衍生物1和3对hA 1 AR与hA 3 AR的亲和力和选择性与母体5'-羟基化合物CPA和(±)-ENBA的亲和力和选择性通过分子合理化建模分析。5'-Chloro-5'-deoxy-(±)-ENBA在福尔马林试验