An improved, regioselective synthesis of the radiolabelling precursor for the translocator protein targeting positron emission tomography imaging radiotracer [18F]GE-180
作者:Véronique Morisson-Iveson、Harry Wadsworth、Joanna Passmore、Amanda Ewan、Sondre Nilsen、Mikkel Thaning、William Trigg
DOI:10.1016/j.tetlet.2014.07.090
日期:2014.9
[18F]GE-180 has been demonstrated to be a promising new positron emission tomography radiotracer for targeting translocator protein. PET imaging of TSPO will enable measurement of neuroinflammation and microglia activity in vivo. The synthetic route used in the initial discovery of GE-180, whilst enabling the rapid evaluation of the structure–activity relationships (SAR) in this molecular class, was
[ 18 F] GE-180已被证明是有针对性的新型正电子发射断层扫描放射示踪剂,可靶向易位蛋白。TSPO的PET成像将能够测量体内的神经炎症和小胶质细胞活性。GE-180的最初发现中使用的合成途径,尽管能够快速评估该分子类别中的结构-活性关系(SAR),但收率不高,也不适合大规模生产。在这里,我们提出了一条通向GE-180和[ 18 F] GE-180的放射性标记前体的优化路线,其得益于提高合成关键吲哚形成步骤的区域选择性的策略,从而显着提高了收率。