Nucleophilic 18F-fluorination of phosphorofluoridates and phosphonofluoridic acids via imidazole-activated precursors
作者:Zhaobiao Mou、Xueyuan Chen、Chao Wang、Tao Wang、Hongzhang Yang、Zijing Li
DOI:10.1016/j.tetlet.2021.152917
日期:2021.3
methodology has been developed to prepare 18F-labeled phosphorofluoridates and phosphonofluoridic acids via the [18F]F− nucleophilic substitution of imidazole-activated precursors. The efficient one-step 18F-fluorination affords stable products in the presence of Zn(Ⅱ) with high radiochemical yields and high molar activities. This 18F-fluorination method could be used to prepare various phosphorofluoridate
18 F-标记的有机氟磷酸盐是重要的放射性合成子,以前只能通过 18/19 F-同位素交换以有限的摩尔活性进行操作。在此,一种新型的18 F-氟化方法已被开发,以制备18 F-标记phosphorofluoridates和phosphonofluoridic酸经由所述[ 18 F]˚F -咪唑活化前体的亲核取代。在Zn(Ⅱ)存在下,高效的一步法18 F氟化反应可得到稳定的产物,具有较高的放射化学收率和较高的摩尔活度。这个18F-氟化方法可用于制备各种氟代磷酸酯和膦酰氟酸类似物,以用作18 F-放射性合成子和潜在的正电子发射断层扫描示踪剂。