disorders. 2-(2-(3-(4-([18F]Fluoroethoxy)phenyl)-4-oxo-3,4-dihydroquinazolin-2-yl)ethyl)-4-isopropoxyisoindoline-1,3-dione ([18F]MNI-659, [18F]5) is a useful positron-emission-tomography (PET) ligand for imaging of PDE10A in the human brain. However, the radiolabeled metabolite of [18F]5 can accumulate in the brain. In this study, using [18F]5 as a lead compound, we designed four new 18F-labeled ligands
磷酸二酯酶10A(PDE10A)是新近确定的中枢神经系统疾病的治疗靶标。2-(2-(3-(4-([ 18 F]
氟乙氧基)苯基)-4-氧代-3,4-二氢
喹唑啉-2-基)乙基)-4-异丙氧基
异吲哚啉-1,3-二酮([ 18 F] MNI-659,[ 18 F] 5)是用于在人脑中对PDE10A成像的有用的正电子发射断层扫描(PET)
配体。但是,[ 18 F] 5的放射性标记代谢物会在大脑中积聚。在这项研究中,我们以[ 18 F] 5为先导化合物,设计了四个新的18 F标记的
配体([ 18 F] 6 – 9)找到比[ 18 F] 5更合适的一种。其中,2-(2-(3-(4-([[ 18 F]
氟甲氧基-d 2)苯基)-4-氧代-3,4-二氢
喹唑啉-2-基)乙基)-4-异丙氧基
异吲哚啉-1, 3-二酮([ 18 F] 9)对PDE10A表现出高的体外结合亲和力(K i = 2.9 nM)和合适的亲脂性(log