Fully automated radiosynthesis of [1-(2-[<sup>18</sup>F]fluoroethyl),1<i>H</i>[1,2,3]triazole 4-ethylene] triphenylphosphonium bromide as a potential positron emission tomography tracer for imaging apoptosis
作者:Anna Haslop、Antony Gee、Christophe Plisson、Nicholas Long
DOI:10.1002/jlcr.3024
日期:2013.5.30
A novel phosphonium salt bearing a fluorine-18 labelled triazole has been designed as a potential imaging agent for apoptosis. The radiosynthesis of [1-(2-[18F]fluoroethyl),1H[1,2,3]triazole 4-ethylene] triphenylphosphonium bromide ([18F]MitoPhos_01) has been carried out on a fully automated system in a two-step reaction. Radiolabelling an ethyl azide and then carrying out a copper-mediated 1,3-cycloaddition reaction has allowed for total synthesis time to be slightly more than 1 h from aqueous [18F]fluoride. After purification by HPLC, the average radiochemical yield was determined to be 9% (not decay corrected); the specific activity was on average 70 GBq/µmol at the end of synthesis, and the radiochemical purity was >99%.
一种带有氟 18 标记三唑的新型鏻盐已被设计为潜在的细胞凋亡显像剂。 [1-(2-[18F]氟乙基),1H[1,2,3]三唑4-乙烯]三苯基溴化鏻([18F]MitoPhos_01)的放射合成已在全自动系统上分两步进行反应。放射性标记叠氮乙酯,然后进行铜介导的1,3-环加成反应,使得从[ 18 F]氟化物水溶液的总合成时间略长于1小时。经HPLC纯化后,平均放射化学收率为9%(未衰减校正);合成结束时比活平均为70 GBq/μmol,放射化学纯度>99%。