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    • 3. 发明申请
    • GASEOUS F-18 TECHNOLOGIES
    • GASEOUS F-18技术
    • WO2015143019A2
    • 2015-09-24
    • PCT/US2015/021215
    • 2015-03-18
    • MAYO FOUNDATION FOR MEDICAL EDUCATION AND RESEARCH
    • DEGRADO, Timothy, R.JIANG, Huailei
    • A61K51/04C07C51/60
    • C07C51/60A61K51/02A61K51/0402A61K51/0491C07B59/001C07C53/40C07C53/42
    • Methods, compositions, and systems related to preparing gaseous 18 F- compounds for use in radiolabeling positron emission tomography (PET) tracer precursor compounds are disclosed. [ 18 F]fluoride ions produced by conventional methods are converted by reaction with an acid anhydride having the formula: to a gaseous 18 F-compound having the formula: wherein each R is independently a substituted or unsubstituted, straight chain or branched CrC4 alkyl group. The resulting gaseous 18 F-compounds can be produced and stored in close proximity to the production location of the [ 18 F]fluoride ions (such as within a cyclotron vault), or easily and efficiently transported long distances with minimal loss of-radioactivity. The gaseous 18 F- compounds, which also can be readily trapped on solid-phase extraction media or in organic solvents such as acetonitrile, provide an alternative source of [ 18 F]fluoride for use in the nucleophilic substitution reactions that are used to synthesize a large number of 18 F-labeled PET imaging tracers, including 2- [ 18 F]fluoro-2-deoxyglucose (FDG).
    • 公开了与制备用于放射性标记正电子发射断层扫描术(PET)示踪剂前体化合物的气态18 F化合物有关的方法,组合物和系统。 通过常规方法产生的[18 F]氟化物离子通过与具有下式的酸酐反应转化成具有下式的气态18 F-化合物:其中每个R 独立地为取代或未取代的直链或支链C 1 -C 4烷基。 生成的气态18 F化合物可以在[18 F]氟化物离子的生成位置附近(例如在回旋加速器内)生产和储存, 或者轻松高效地运输长距离且放射性损失最小。 气态18 F-化合物也可容易地捕获在固相萃取介质上或有机溶剂如乙腈中,提供了一种替代性的[18 F] 氟化物用于亲核取代反应中,用于合成大量18 F-标记的PET成像示踪剂,包括2- [18 F]氟-2- 脱氧葡萄糖(FDG)。