Synthesis of 1,1′ [11C]-methylene-di-(2-naphthol) ([11C]ST1859) for PET studies in humans
作者:Oliver Langer、Andreas Krcal、Alexander Schmid、Aiman Abrahim、Patrizia Minetti、Diana Celona、Dirk Roeda、Frédéric Dollé、Kurt Kletter、Markus Müller
DOI:10.1002/jlcr.951
日期:2005.7
1,1′-Methylene-di-(2-naphthol) (ST1859), a candidate drug for the treatment of Alzheimer's disease, was radiolabelled with carbon-11 with the aim to perform PET microdosing studies in humans. The radiosynthesis was automated in a commercial synthesis module (Nuclear Interface PET tracer synthesizer) and proceeded via reaction of [11C]formaldehyde with 2-naphthol. [11C]formaldehyde was prepared by catalytic dehydrogenation of [11C]methanol (conversion yield: 48±11% (n = 19)) employing a recently developed silver-containing ceramic catalyst. Starting from 69±3 GBq of [11C]carbon dioxide (n = 19), 4±1 GBq of [11C]ST1859 (decay-corrected to the end of bombardment), readily formulated for intravenous administration, could be obtained in an average synthesis time of 38 min. The specific radioactivity of [11C]ST1859 at the end of synthesis exceeded 32 GBq/µmol. Copyright © 2005 John Wiley & Sons, Ltd.
1,1′-亚甲基双(2-萘酚)(ST1859),一种用于治疗阿尔茨海默病的候选药物,被碳-11放射性标记,旨在进行人体PET微量给药研究。放射合成在商用合成模块(Nuclear Interface PET示踪剂合成器)中自动化进行,并通过[11C]甲醛与2-萘酚的反应进行。[11C]甲醛是通过最近开发的含有银的陶瓷催化剂催化[11C]甲醇脱氢(转化产率:48±11%(n=19))制备的。从69±3 GBq的[11C]二氧化碳(n=19)开始,可以在平均合成时间38分钟内获得4±1 GBq的[11C]ST1859(衰减校正到轰击结束),易于配制成静脉注射剂。合成结束时[11C]ST1859的比活度超过32 GBq/µmol。版权所有 © 2005 John Wiley & Sons, Ltd.