The present invention discloses a radioisotope
18
F substituted thiamine, synthesis method, and use thereof in small animal PET/CT imaging. The radioisotope
18
F substituted thiamine has a structure of
The synthesis method comprises radiochemical synthesis by using existing precursors. In the present invention, the hydroxyl in the hydroxyethyl on the thiazole cycle of thiamine is replaced by radioisotope
18
F, to prepare a PET tracer. The radioisotope
18
F substituted thiamine of the present invention successfully enters the brains of various strains of mice, and the uptake in the brains of thiamine-deficient mice is obviously greater than that in normal control. The present invention is useful in the preparation of a brain imaging tracer for clinical trials of Alzheimer's disease and tumors.
本发明公开了一种放射性同位素18F替代
硫胺素、合成方法及其在小动物PET/CT成像中的应用。放射性同位素18F替代
硫胺素的结构如下:合成方法通过使用现有的前体进行放射
化学合成。本发明中,
硫胺素噻唑环上羟乙基中的羟基被放射性同位素18F替代,以制备PET示踪剂。本发明的放射性同位素18F替代
硫胺素成功进入各种小鼠的大脑,
硫胺素缺乏小鼠大脑中的摄取量明显高于正常对照组。本发明在制备用于阿尔茨海默病和肿瘤临床试验的脑成像示踪剂方面具有实用价值。