SYNTHESIZING PET TRACERS USING [F-18]SULFONYL FLUORIDE AS A SOURCE OF [F-18]FLUORIDE
申请人:Zhou Dong
公开号:US20170197912A1
公开(公告)日:2017-07-13
The present disclosure relates to the methods for the preparation of reactive [F-18]fluoride in a form of [F-18]sulfonyl fluoride suitable for efficient radiolabeling without an azeotropic evaporation step by the use of anion exchange resin and sulfonyl chloride, and its applications in the manufacturing of PET radiopharmaceuticals.
[EN] METAL OXIDE CATALYZED RADIOFLUORINATION<br/>[FR] RADIOFLUORATION CATALYSÉE PAR OXYDE MÉTALLIQUE
申请人:UNIV CALIFORNIA
公开号:WO2016004377A1
公开(公告)日:2016-01-07
Inter alia, the first titania-catalyzed [18F]-radiofluorination in highly aqueous medium is provided. In embodiments, the method utilizes titanium dioxide, 1 : 1 acetonitrile- thexyl alcohol solvent mixture and tetrabutylammonium bicarbonate as a base. Radiolabeling may be directly performed with aqueous [18F]fluoride without the need for drying/azeotroping step, which reduces radiosynthesis time while keeping high fluoride conversion. The general applicability of the synthetic strategy to the synthesis of the wide range of PET probes from tosylated precursors is demonstrated.
Fast Production of Highly Reactive No-Carrier-Added [<sup>18</sup>F]Fluoride for the Labeling of Radiopharmaceuticals
作者:Christian F. Lemaire、Joël J. Aerts、Samuel Voccia、Lionel C. Libert、Frédéric Mercier、David Goblet、Alain R. Plenevaux、André J. Luxen
DOI:10.1002/anie.200906341
日期:2010.4.19
Doing without water: The 18F labeling of radiopharmaceuticals requires nearly anhydrous solutions of [18F]fluoride. Aqueous K2CO3 is generally used to elute [18F]fluoridefrom an anion‐exchange resin. Replacing aqueous K2CO3 with strong organic bases, such as the phosphazene base P2Et (conjugate acid shown), enabled the recovery of highly reactive [18F]fluoride and avoided the azeotropic evaporation
不用水:放射性药物的18 F标记需要[ 18 F]氟化物的几乎无水的溶液。K 2 CO 3水溶液通常用于从阴离子交换树脂中洗脱[ 18 F]氟化物。用强有机碱(例如磷腈碱P 2 Et(显示共轭酸))代替K 2 CO 3水溶液,可以回收高反应性的[ 18 F]氟化物,并避免了水的共沸蒸发,这在水处理中非常困难。芯片设备。
An Efficient Method for Enhancing the Reactivity and Flexibility of [<sup>18</sup>F]Fluoride Towards Nucleophilic Substitution Using Tetraethylammonium Bicarbonate
作者:Laurent Brichard、Franklin I. Aigbirhio
DOI:10.1002/ejoc.201402587
日期:2014.10
standard method used to generate reactive [18F]fluoride for [18F]radiolabelling is to trap it on an anion-exchange cartridge then elute it with a basic aqueous solution, which is then subjected to azeotropic evaporation to remove water. We have now developed a method through the use of tetraethylammonium hydrogen carbonate in which we can obtain efficient recovery of [18F]fluoride (up to 99 %), remove
Azeotropic drying-free aliphatic radiofluorination to produce PET radiotracers in a mixed organic solvent system
作者:Young-Do Kwon、Jeongmin Son、Mijin Yun、Joong-Hyun Chun
DOI:10.1016/j.tetlet.2018.06.033
日期:2018.7
in various organic solvents for subsequent radiofluorination. Herein, we report the azeotropic drying-free radiofluorination of aliphatic substrates and demonstrate the viability of hydrated [18F]fluoride ions in a mixed organic solventsystem for obtaining useful radiochemical yields (RCYs). This practical and simple method has demonstrated general applicability to the production of established PET