Synthesis of N1′-([18F]fluoroethyl)naltrindole ([18F]FEtNTI): a radioligand for positron emission tomographic studies of delta opioid receptors
作者:William B. Mathews、Chris M. Kinter、James Palma、Robert V. Daniels、Hayden T. Ravert、Robert F. Dannals、John R. Lever
DOI:10.1002/(sici)1099-1344(199901)42:1<43::aid-jlcr165>3.0.co;2-2
日期:1999.1
hydrochloride with an overall yield of 47%. Nucleophilic displacement of a tosylate leaving group by [ 18 F]fluoride, followed by hydrogenolysis (H 2 , 10% Pd/C) of a benzyl protecting group on the phenolic moiety, gave [ 18 F]FEtNTI. The average (n = 5) time for radiosynthesis, HPLC purification, and formulation was 77 min from end of bombardment. [ 18 F]FEtNTI of high radiochemical purity was obtained with
N1'-([ 18 F] 氟乙基) naltrindole ([ 18 F] FEtNTI) 是δ 阿片受体拮抗剂naltrindole (NTI) 的一种新型类似物,已准备好作为放射性配体用于正电子发射断层扫描。用于放射性标记的前体由盐酸纳曲酮分四步获得,总产率为 47%。甲苯磺酸盐离去基团被[ 18 F]氟化物亲核置换,然后氢解(H 2 ,10% Pd/C)酚部分上的苄基保护基团,得到[ 18 F]FEtNTI。放射合成、HPLC 纯化和制剂的平均 (n = 5) 时间是从轰击结束后 77 分钟。获得了高放射化学纯度的[ 18 F]FEtNTI,合成结束时的平均比活为846 mCi/μmol,平均放射化学产率为10%(未校正衰减)。