Synthesis and evaluation of a 18F-labeled spirocyclic piperidine derivative as promising σ1 receptor imaging agent
作者:Yuan-Yuan Chen、Xia Wang、Jin-Ming Zhang、Winnie Deuther-Conrad、Xiao-Jun Zhang、Yiyun Huang、Yan Li、Jia-Jun Ye、Meng-Chao Cui、Jörg Steinbach、Peter Brust、Bo-Li Liu、Hong-Mei Jia
DOI:10.1016/j.bmc.2014.08.003
日期:2014.10
Several spirocyclic piperidine derivatives were designed and synthesized as σ1 receptor ligands. In vitro competition binding assays showed that the fluoroalkoxy analogues with small substituents possessed high affinity towards σ1 receptors and subtype selectivity. Particularly for ligand 1′-((6-(2-fluoroethoxy)pyridin-3-yl)methyl)-3H-spiro[2-benzofuran-1,4′-piperidine] (2), high σ1 receptor affinity
几个螺哌啶衍生物,设计并为σ合成1受体配体。体外竞争结合测定显示,与小取代基氟代类似物具有朝向σ高亲和力1受体和亚型选择性。特别是用于配体1' - ((6-(2-氟乙氧基)吡啶-3-基)甲基)-3- ħ -螺[2-苯并呋喃-1,4'-哌啶](2),高σ 1个受体亲和力(ķ我 = 2.30 1nM)和高σ 1 /σ 2亚型选择性(以及高σ142倍)1 /倍234观察中VAChT选择性()。[ 18楼] 2是在自制的自动合成模块中使用高效的一锅两步反应方法合成的,总的分离放射化学产率为8-10%,放射化学纯度高于99%,比活度为56- 78 GBq /μmol。[ 18 F] 2在ICR小鼠中的生物分布研究表明,高的初始大脑摄取和相对较快的冲刷。氟哌啶醇,化合物的给药1和[注射之前(微摩尔/ kg的3,5,或10)5分钟,以不同浓度的SA4503的18 F] 2显著降低在已知含有σ器官的放射性