Synthesis and evaluation of 2-(2′-((dimethylamino)methyl)-4′-(2-fluoroethoxy-substituted)phenylthio)benzenamine derivatives as potential positron emission tomography imaging agents for serotonin transporters
作者:Ya-Yao Huang、Li-Te Chang、Hsin-Yi Shen、Ying-Heng Chen、Kai-Yuan Tzen、Chyng-Yann Shiue、Ling-Wei Hsin
DOI:10.1016/j.bioorg.2020.103654
日期:2020.4
derivatives with various substitutions at the 4-position on phenyl ring A and different lengths of the 2-fluoroethoxy-substituted side-chain at the 4'-position on ring B were synthesized and evaluated as potential positron emission tomography (PET) imaging agents for serotonin transporters (SERT). These ligands exhibited high SERT binding affinities (Ki = 0.11-1.3 nM) and the 4-methyl-substituted (4-Me) compounds
合成了一系列在苯环A的4位具有各种取代基和在B环的4′位具有不同长度的2-氟乙氧基取代的侧链长度的一系列二苯硫醚衍生物,并将其评估为潜在的正电子发射断层扫描(PET) )血清素转运蛋白(SERT)的显像剂。这些配体表现出高的SERT结合亲和力(Ki = 0.11-1.3 nM),并且4-甲基取代的(4-Me)化合物7a和8a对去甲肾上腺素转运蛋白(NET)的SERT选择性极佳(392和700倍,分别)。在平行人工膜通透性试验(PAMPA)中,这些配体表现出中等至高的脑渗透性,并且4-Me类似物的BBB通透性高于相应的4-F类似物。与4-F-ADAM相比,2-氟乙氧基取代的配体显示出更高的代谢稳定性和更低的亲脂性。[18F] 7a-c易于使用自动合成器制备,并在大鼠脑中表现出显着的摄取和缓慢的洗脱。静脉注射后120分钟,[18F] 7a在中脑中摄取最高,而[18F] 7b在下丘脑和中脑中摄取