Novel efficient, time-saving and reliable radiofluorination procedures for the production of 18F-labelled active esters via nucleophilic substitution of the corresponding onium precursors with 18F− are described. The active ester including [18F]F-Py-TFP and [18F]TFB produced by one of these methods was used to prepare PSMA-specific PET tracers such as [18F]DCFPyL. The key advantages of these inventive methods are efficiency, short time of preparation and excellent amenability to automation. A pharmaceutical composition containing at least one PSMA-specific PET tracers prepared by the inventive method is useful for positron emission tomography (PET) imaging, especially imaging prostate tumor.
本文介绍了通过 18F- 亲核取代相应的鎓前体生产 18F 标记活性酯的高效、省时和可靠的新型放射性
氟化程序。其中一种方法生产的活性酯包括[18F]F-Py-
TFP 和 [18F]TFB,用于制备 PSMA 特异性 PET 示踪剂,如[18F]DCFPyL。这些发明方法的主要优点是效率高、制备时间短且非常适合自动化。用本发明方法制备的含有至少一种 PSMA 特异性 PET 示踪剂的药物组合物可用于正电子发射断层扫描(PET)成像,特别是前列腺肿瘤成像。