Aiming at the development of positron-emitting ligands with specific and high affinity toward dopamine D2 receptors in the central nervous system, we synthesized a new fluorinated eticlopride derivative. A fluorine atom was introduced at the C-4 position of the pyrrolidine ring of eticlopride, a dopamine D2 antagonist of the benzamide series. The in vitro binding affinity of this ligand toward the D2 receptor was found to be as potent as eticlopride, suggesting that the corresponding 18F-labelled compound may be useful as an in vivo radioligand for postron emission tomography.
为了开发对中枢神经系统
多巴胺 D2 受体具有特异性和高亲和力的正电子发射
配体,我们合成了一种新的
氟化依替
氯必利衍
生物。依替
氯必利是一种苯甲酰胺系列的
多巴胺 D2 拮抗剂,我们在其
吡咯烷环的 C-4 位置引入了一个
氟原子。研究发现,这种
配体与 D2 受体的体外结合亲和力与依替
氯必利一样强,这表明相应的 18F 标记化合物可用作体内放射性
配体,用于体外发射断层扫描。