Halogenated 4-(Phenoxymethyl)piperidines as Potential Radiolabeled Probes for σ-1 Receptors: <i>In </i><i>Vivo</i> Evaluation of [<sup>123</sup>I]-1-(Iodopropen-2-yl)-4-[(4-cyanophenoxy)methyl]piperidine
作者:Rikki N. Waterhouse、Karine Mardon、Katrina M. Giles、T. Lee Collier、Joanne C. O'Brien
DOI:10.1021/jm960720+
日期:1997.5.1
receptor binding assays, and their log P values were estimated using HPLC analysis. The effect of various N-substituents on the sigma-1 and sigma-2 dissociation constants was examined. These substituents included fluoroalkyl, hydroxyalkyl, iodopropenyl, and selected ortho-, meta-, and para-substituted benzyl groups. Also determined were the effects of various moieties on the phenoxy ring; specifically
几种卤化的4-(4-苯氧基甲基)哌啶被合成为潜在的σ受体配体。这些化合物的亲和力和选择性使用体外受体结合测定法确定,其log P值通过HPLC分析估算。检查了各种N取代基对sigma-1和sigma-2解离常数的影响。这些取代基包括氟代烷基,羟烷基,碘丙烯基和选定的邻,间和对位取代的苄基。还确定了不同部分对苯氧基环的影响;特别是检查了4-碘,4-溴,4-硝基,4-氰基,3-溴和五氟取代基。这些化合物对sigma-1和sigma-2受体的解离常数范围分别为0.38-24.3和3.9-361 nM。Ki(sigma-2 / sigma-1)的比例在1.19到121之间。最有希望的碘化配体之一是1-(反式碘丙烯-2-基)-4-[(4-氰基苯氧基)甲基哌啶二烯(4)用123I标记,并在成年雄性大鼠体内进行了研究。在大脑和许多其他已知具有sigma受体的器官中观察到高吸收和放射性的良好保留。阻断研究显示[123I]