Several [18F]-labeled α-trifluoromethyl ketones have been synthesized. Reactions of 2,2-difluoro-1-aryl-1-trimethylsiloxyethenes (1a–d) with [18F]-F2 at low temperature produced [18F]-labeled α-trifluoromethyl ketones (2a–d). Radio-labeled products were isolated by purification with column chromatography in 22–28% yields, decay corrected (d.c.) in three runs per compound. Radiochemical purity was >99% with specific activities 15–20 GBq/mmol at the end of synthesis (EOS). The synthesis time was 35–40 min from the end of bombardment (EOB). This one-step simple method is highly useful for the radiochemical synthesis of potential biologically active [18F]-labeled α-trifluoromethyl ketones for PET imaging. Copyright © 2003 John Wiley & Sons, Ltd.
我们合成了几种[18F]标记的α-三
氟甲基酮。在低温下,2,2-二
氟-1-芳基-1-三甲基
硅氧
乙烯(1a-d)与[18F]-F2 反应,生成了[18F]标记的α-三
氟甲基酮(2a-d)。放射性标记的产品通过柱层析纯化分离出来,收率为 22-28%,每个化合物经过三次衰减校正(d.c.)。放射性纯度大于 99%,合成结束(EOS)时的比活度为 15-20 GBq/mmol。从轰击结束(
EOB)算起,合成时间为 35-40 分钟。这种一步到位的简单方法非常适用于放射
化学合成具有潜在
生物活性的[18F]标记α-三
氟甲基酮用于 PET 成像。Copyright © 2003 John Wiley & Sons, Ltd. All Rights Reserved.