Rhodium-mediated [<sup>11</sup>C]carbonylation: a library of<i>N</i>-phenyl-<i>N</i>′-{4-(4-quinolyloxy)-phenyl}-[<sup>11</sup>C]-urea derivatives as potential PET angiogenic probes
作者:Ohad Ilovich、Ola Åberg、Bengt Långström、Eyal Mishani
DOI:10.1002/jlcr.1582
日期:2009.5.15
As part of our ongoing investigation into the imaging of angiogenic processes, a small library of eight vascular endothelial growth factor receptor-2 (VEGFR-2)/platelet-derived growth factor receptor β dual inhibitors based on the N-phenyl-N′-4-(4-quinolyloxy)-phenyl-urea was labelled with 11C (β+, t1/2=20.4 min) in the urea carbonyl position via rhodium-mediated carbonylative cross-coupling of an aryl azide and different anilines. The decay-corrected radiochemical yields of the isolated products were in the range of 38–81% calculated from [11C]carbon monoxide. Starting with 10.7±0.5 GBq of [11C]carbon monoxide, 1-[4-(6,7-dimethoxy-quinolin-4-yloxy)-3-fluoro-phenyl]-3-(4-fluoro-phenyl)-[11C]-urea (2.1 GBq) was isolated after total reaction time of 45 min with a specific activity of 92±4 GBq µmol−1. Copyright © 2009 John Wiley & Sons, Ltd.
作为我们正在进行的血管生成过程成像研究的一部分,一个由八种血管内皮生长因子受体 2 (VEGFR-2)/血小板衍生生长因子受体 β 双抑制剂组成的小型库基于 N-苯基-N'-通过芳基叠氮化物和不同苯胺的铑介导的羰基化交叉偶联,在脲羰基位置用 11C(β+,t1/2=20.4 分钟)标记 4-(4-喹啉氧基)-苯基-脲。根据[11C]一氧化碳计算,分离产物的衰变校正放射化学产率在 38-81% 范围内。以 10.7±0.5 GBq 的[11C]一氧化碳开始,1-[4-(6,7-二甲氧基-喹啉-4-基氧基)-3-氟-苯基]-3-(4-氟-苯基)-[总反应时间为 45 分钟后,分离出 11C]-尿素 (2.1 GBq),比活性为 92±4 GBq μmol−1。版权所有 © 2009 约翰·威利父子有限公司