Synthesis and11C-radiolabelling of a tropane derivative lacking the 2β ester group: a potential PET-tracer for the dopamine transporter
作者:Roland Schönbächler、Simon M. Ametamey、Pius A. Schubiger
DOI:10.1002/(sici)1099-1344(199905)42:5<447::aid-jlcr204>3.0.co;2-9
日期:1999.5
C]-methane with iodine in 60 ± 10 % radiochemical yield (decay corrected from [ 11 C]-methyl iodide). The overall synthesis time was on average 60 minutes at EOB (end of bombardment). The final product had a specific activity of 2000 - 2700 Ci/mmol (74 - 100 TBq/mmol) at EOS (end of synthesis) and the radiochemical purity was greater than 99%. [ 11 C]-β-CPPIT showed a logP value of 2.1 indicating that
新托烷类似物的合成和 11 C-放射性标记。3β-(4'-chlorophenyl)-2β-(3'-phenylisoxazol-5'-yl)tropane (β-CPPIT) 是多巴胺转运蛋白的抑制剂。脱甲基化合物 3β-(4'-氯苯基)-2β-(3'-苯基异恶唑-5'-基) 去甲托烷 (5) 是通过六步反应序列从可卡因开始制备的。[ 11 C]-β-CPPIT 使用 [ 11 C]-甲基碘通过 N-甲基化进行标记,该碘从 [ 11 C]-甲烷与碘的气相反应中获得,放射化学产率为 60 ± 10 %(衰减从 [ 11 C]-甲基碘)。在EOB(轰击结束)时,总合成时间平均为60分钟。最终产物在 EOS(合成结束)时的比活为 2000 - 2700 Ci/mmol (74 - 100 TBq/mmol),放射化学纯度大于 99%。