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多巴胺转运蛋白显像剂^18F—FP—β—CIT的制备
引用本文:方平,陈正平,林岩松,周翔,杜宜奎,王世真.多巴胺转运蛋白显像剂^18F—FP—β—CIT的制备[J].同位素,2001,14(1):6-10.
作者姓名:方平  陈正平  林岩松  周翔  杜宜奎  王世真
作者单位:1. 江苏省原子医学研究所,
2. 北京协和医院PET中心,
基金项目:国家自然科学基金资助项目(39770230),江苏省自然科学基金资助项目(BK99163)和江苏省卫生厅重点科研基金资助项目(H200006)
摘    要:可卡因经水解、脱水、甲酯化、苯基溴镁格氏反应、脱N-甲基、碘化、N烷基化、甲磺酰化等反应制备氟标记前体,用K222催化进行氟标记,得到^18F-FP-β-CITN-(3-氟丙基)-2β-甲酯基-3β-(4‘-碘苯)去甲基托烷],标记率25%-30%,放射化学产率10%-12%,合成及纯化时间100-110min,纯化后放化纯度<95%,稳定性较好。

关 键 词:多巴胺转运蛋白显像剂  FP-β-CIT  制备  氟18标记物  帕金森病  诊断
文章编号:1000-7512(2001)01-0006-05

Preparation of 18F-FP-
FANG Ping.Preparation of 18F-FP-[J].Isotopes,2001,14(1):6-10.
Authors:FANG Ping
Abstract:The ligand ofN-(3-fluoropropyl)-2β-carbomethoxy-3β-(4'-iodophenyl)nortropane (FP-β-CIT) and mesylate precursor are synthesized by hydrolysis of cocaine, followed by dehydration, esterification, Grignard reaction, N-demethylation,iodination,N-alkylation with 3-bromopropanol and methylsulfonylation. Finally, 18F-FP-β-CIT is prepared by nucleophilic fluorination of the mesylate with K18F/K222(Kryptofix). The labeling yield is 25%~30%, and the total radiochemical yield is 10%~12%. After purifying the radiochemical purity of 18F-FP-β-CIT is greater than 95%, and stable for more than 4 hours at room temperature. The whole process (including synthesis and analysis) takes only 100~110 minutes.
Keywords:
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