Glycogen Synthase Kinase-3 Maleimide Inhibitors As Potential PET-Tracers for Imaging Alzheimer’s Disease: <sup>11</sup>C-Synthesis and <i>In Vivo</i> Proof of Concept
作者:Javier Giglio、Soledad Fernandez、Ana Martinez、Maia Zeni、Laura Reyes、Ana Rey、Hugo Cerecetto
DOI:10.1021/acs.jmedchem.1c00769
日期:2022.1.27
evaluation of 11C-labeled-maleimides as radiotracers for positron emission tomography imaging of GSK-3 associated with Alzheimer′s disease (AD). 3-Acetyl-4-(1-[11C]-methyl-1H-indol-3-yl)[1H]pyrrole-2,5-dione ([11C]-2) was obtained by direct methylation using [11C]-CH3I and Cs2CO3 in DMF with a 31 ± 4% radiochemical yield and a radiochemical purity of 97.7 ± 0.8%. [11C]-2 was stable both in its final formulation
在此,我们介绍了11 C 标记的马来酰亚胺作为放射性示踪剂用于与阿尔茨海默病 (AD) 相关的 GSK-3 的正电子发射断层扫描成像的评估。3-Acetyl-4-(1-[ 11 C]-methyl-1 H -indol-3-yl)[1 H ]pyrrole-2,5-dione ([ 11 C]- 2 ) 通过使用直接甲基化获得[ 11 C]-CH 3 I 和 Cs 2 CO 3在 DMF 中的放射化学产率为 31 ± 4%,放射化学纯度为 97.7 ± 0.8%。[ 11 C]- 2在其最终制剂和人血浆中均稳定 120 分钟,并具有 70 ± 1% 的血浆蛋白结合和 LogD7.4值为 1.84 ± 0.04。[ 11 C]- 2在健康动物体内的体外生物分布表现出显着的脑摄取和保留,显示出其穿透完整血脑屏障的能力。AD 小鼠的体内PET 成像显示,与正常动物相比,下丘脑、纹状体和杏仁核的摄