Radiosynthesis of a 18F-labeled 2,3-diarylsubstituted indole via McMurry coupling for functional characterization of cyclooxygenase-2 (COX-2) in vitro and in vivo
作者:Torsten Kniess、Markus Laube、Ralf Bergmann、Fabian Sehn、Franziska Graf、Joerg Steinbach、Frank Wuest、Jens Pietzsch
DOI:10.1016/j.bmc.2012.04.022
日期:2012.6
The radiosynthesis of 3-(4-[18F]fluorophenyl)-2-(4-methylsulfonylphenyl)-1H-indole [18F]-3 as potential PET radiotracer for functional characterization of cyclooxygenase-2 (COX-2) in vitro and in vivo is described. [18F]-3 was prepared by McMurry cyclization of a 18F-labeled intermediate with low valent titanium and zinc via a two-step procedure in a remote controlled synthesizer unit including HPLC
放射性合成3-(4- [ 18 F]氟苯基)-2-(4-甲基磺酰基苯基)-1 H-吲哚[ 18 F] -3作为潜在的PET示踪剂,用于表征环氧合酶2(COX-2)的功能。描述了体外和体内。[ 18 F] -3是通过McMurry将18 F标记的含低价钛和锌的中间体通过两步操作在包括HPLC纯化和固相萃取的远程控制合成器单元中环化制备的。以这种方式[ 18 F] - 3在80分钟合成时间合成在10%的总衰变校正收率从[ 18F]氟化物的放射化学纯度> 98%,比活度为74-91 GBq /μmol(EOS)。[ 18 F] -3在体外使用促炎刺激的THP-1和COX-2表达肿瘤细胞系(FaDu,A2058,HT-29)进行了评估,其中放射性示踪剂的摄取与上调的COX- 2表达。[ 18 F] -3的稳定性是通过在大鼠全血和血浆中进行体外孵育以及体内动脉血样品的代谢物分析确定的,显示60分钟后