作者:E. W. van Tilburg、E. J. F. Franssen、J. J. M. van der Hoeven、M. van der Meij、D. Elshove、A. A. Lammertsma、A. D. Windhorst
DOI:10.1002/jlcr.861
日期:2004.10.15
Docetaxel (Taxotere®) is an accepted chemotherapeutic agent for the treatment of breast cancer and non-small cell lung cancers. A potential means of predicting response is measuring tumor uptake of [11C]docetaxel using Positron Emission Tomography (PET). The synthetic approach to introduce the 11C isotope in the 2-benzoyl moiety of docetaxel unfortunately was unsuccessful. The radiosynthesis of [11C]docetaxel (6b, Scheme 1), with the 11C isotope in the BOC moiety, was however, successful using a second synthetic approach. It started with the reaction of [11C]tert-butanol with 1,2,2,2-tetrachloroethyl chloroformate to give [11C]tert-butyl-l,2,2,2-tetrachloroethyl carbonate in a good overall yield (62±9%). In the final step, the [11C]tert-butoxycarbonylation of the free amine of docetaxel gave [11C]docetaxel 6b in a satisfactory decay corrected yield of 10±1% (from [11C]CO2). Copyright © 2004 John Wiley & Sons, Ltd.
多西他赛(泰索帝®)是一种公认的用于治疗乳腺癌和非小细胞肺癌的化疗药物。一种潜在的预测反应的方法是利用正电子发射断层扫描(PET)测量肿瘤对[11C]多西他赛的摄取。遗憾的是,将11C同位素引入多西他赛的2-苯甲酰基部分的合成方法未能成功。然而,通过第二种合成方法,将11C同位素引入BOC部分,成功实现了[11C]多西他赛(6b,方案1)的放射合成。该方法始于[11C]叔丁醇与1,2,2,2-四氯乙基氯甲酸酯反应,生成[11C]叔丁基-1,2,2,2-四氯乙基碳酸酯,总体产率良好(62±9%)。在最后一步中,多西他赛的游离胺的[11C]叔丁氧羰酰化反应得到了[11C]多西他赛6b,经衰减校正的产率为令人满意的10±1%(来自[11C]CO2)。版权所有 © 2004 John Wiley & Sons, Ltd.