An automated radiosynthesis of carbon-11 positron emission tomography radiotracer [11C]UCB-J for imaging the synaptic density biomarker synaptic vesicle glycoprotein SV2A was established using Synthra RNPlus synthesizer. Commercially available trifluoroborate UCB-J analogue was used as a radiolabelling precursor, and the desired radiolabelled product was isolated in 11 ± 2% (n = 7) nondecay corrected radiochemical yield and formulated as a 10% EtOH solution in saline with molar activities of 20 to 100 GBq/μmol. The method was based upon the palladium(0)-mediated Suzuki cross-coupling reaction and [11C]CH3I as a radiolabelling synthon. The isolated product was cGMP compliant as demonstrated by the results of quality control analysis.
利用 Synthra RNPlus 合成器建立了用于突触密度
生物标志物突触小泡糖蛋白 SV2A 成像的碳-11 正电子发射断层成像放射性示踪剂 [11C]UCB-J 的自动放射合成方法。使用市售的三
氟硼酸盐 UCB-J 类似物作为放射性标记前体,以 11 ± 2% (n = 7) 的非衰变校正放射
化学收率分离出所需的放射性标记产物,并配制成 10% EtOH 的生理盐
水溶液,摩尔活度为 20 至 100 GBq/μmol。该方法以
钯(0)介导的铃木交叉偶联反应为基础,以[11C]CH3I 作为放射性标记同系物。质量控制分析结果表明,分离出的产品符合 cGMP 标准。