作者:Wenping Li、Wayne Thompson、Thorsten Fisher、John S. Wai、Daria Hazuda、H. Donald Burns、Terence G. Hamill
DOI:10.1002/jlcr.1778
日期:——
The human immunodeficiency virus integrase inhibitor, [18F]MK-0518, was prepared via a three-step, one-pot radiosynthesis. [18F]4-Fluorobenzylamine was produced from the fluorination of 4-cyano-N,N,N-trimethylammonium triflate with [18F]fluoride and reduction with borane methylsulfide complex in 50–68% radiochemical yield. The final step, the coupling of [18F]4-fluorobenzylamine with an ester coupling partner, achieved an overall uncorrected radiochemical yield after HPLC purification of ∼2%, based on the starting [18F]fluoride. In a typical run, the total synthesis time was about 90 min and gave 0.37–1.74 GBq (10–47 mCi) of [18F]MK-0518. The radiochemical purity of [18F]MK-0518 was>98% and the specific activity was 243–1275 Ci/mmol (EOS, n=4). A convenient three-step, one-pot radiosynthesis of [18F]MK-0518 via [18F]4-fluorobenzylamine has been developed, giving sufficient quantities of [18F]MK-0518 for animal positron emission tomography studies. Copyright © 2010 John Wiley & Sons, Ltd.
人类免疫缺陷病毒整合酶抑制剂[18F]MK-0518是通过三步一步放射合成法制备的。用[18F]氟化物对 4-氰基-N,N,N-三甲基三酸铵进行氟化,然后用甲基硫化硼络合物还原,制备出[18F]4-氟苄胺,放射化学收率为 50-68%。最后一步是将[18F]4-氟苄胺与酯类偶联剂偶联,根据起始的[18F]氟化物,经 HPLC 纯化后,未校正的总放射化学收率为 2%。在一次典型的运行中,总合成时间约为 90 分钟,得到 0.37-1.74 GBq (10-47 mCi) 的[18F]MK-0518。[18F]MK-0518的放射化学纯度>98%,比活度为243-1275 Ci/mmol(EOS,n=4)。通过[18F]4-氟苄胺,我们开发出了一种方便的三步一步放射性合成[18F]MK-0518的方法,为动物正电子发射断层扫描研究提供了足够数量的[18F]MK-0518。Copyright © 2010 John Wiley & Sons, Ltd. All Rights Reserved.