Synthesis of18F-labeled cyclooxygenase-2 (COX-2) inhibitor as a potential PET imaging agent
作者:Haibin Tian、Zhenghong Lee
DOI:10.1002/jlcr.1074
日期:2006.6
A new PET tracer for COX-2 imaging, the 6-ethoxy-3-(4-methanesulfonylphenyl)-4-(4-[18F]fluorophenyl)pyran-2-one ([18F]EFMP), was synthesized. For F-18 radiolabeling, a trimethylammonium precursor and a brominated precursor were synthesized from 1,1,2,3-tetrachlorocycloprop-2-ene in 6 steps. The radiolabeling was achieved through nucleophilic substitution using no-carrier-added (n.c.a.) fluorine-18
合成了一种用于 COX-2 成像的新 PET 示踪剂,即 6-ethoxy-3-(4-methanesulfonylphenyl)-4-(4-[18F]fluorophenyl)pyran-2-one ([18F]EFMP)。对于 F-18 放射性标记,三甲基铵前体和溴化前体由 1,1,2,3-四氯环丙-2-烯分 6 个步骤合成。放射性标记是通过使用无载体添加 (nca) 氟 18 的亲核取代实现的。固相萃取和半制备型 HPLC 纯化以 14.6±3.3% (n = 4) 衰减校正的放射化学产量产生 [18F] EFMP,比活度为 487±85.1 (n = 4) Ci/mmol 且大于 98 % 放射化学纯度。版权所有 © 2006 John Wiley & Sons, Ltd.