(+)-N-[11C]-Benzyl-N-normetazocine (1S,5S,9S-(+)-cis-2-[11C]-benzyl-2′-hydroxy-5,9-dimethyl-6,7-benzomorphan), a potent and selective ligand for the σ receptor, was prepared by N-benzylation of (+)-cis-N-normetazocine with [α-11C]-benzyl iodide in ethanol using sodium hydrogen carbonate as the proton acceptor. The radiotracer was purified by semi-preparative reverse-phase HPLC. The average specific activity was 746 mCi/μmol calculated at end-of-synthesis (EOS). The average time of synthesis including formulation was 35 minutes.
(+)-N-[11C]-苄基-N-诺
美他佐辛(1S,5S,9S-(+)-顺-2-[11C]-苄基-2′-羟基-5,9-二甲基-6,7-苯并
吗喃)是一种强效且具有选择性的σ受体
配体,通过在
乙醇中使用
碳酸氢钠作为质子接受体,将(+)-顺-N-诺
美他佐辛与[α-11C]-
苄基碘进行N-苄基化反应制备得到。该放射性示踪剂通过半制备性反相高效
液相色谱法进行纯化。计算得到的平均比活度在合成结束时(EOS)为746 mCi/μmol。合成及配制的平均时间为35分钟。