Synthesis of [11C]FEDAA1106 as a new PET imaging probe of peripheral benzodiazepine receptor expression
作者:Min Wang、Mingzhang Gao、Gary D. Hutchins、Qi-Huang Zheng
DOI:10.1016/j.ejmech.2008.08.001
日期:2009.6
promising radioligands for positron emission tomography (PET) imaging of PBR. This study was designed to develop a new radiolabeled analog of [11C]DAA1106 and [18F]FEDAA1106, [11C]FEDAA1106, for PET imaging of PBR expression in brain and cancer. Precursor N-(5-fluoro-2-phenoxyphenyl)-N-(2-(2-fluoroethoxy)-5-hydroxybenzyl)acetamide (9) was synthesized in multiple steps with moderate to high chemical
周围的苯并二氮杂receptor受体(PBR)与神经炎症和肿瘤进展有关。[ 11 C] DAA1106和[ 18 F] FEDAA1106是用于PBR的正电子发射断层扫描(PET)成像的两种有前途的放射性配体。这项研究旨在开发一种新的放射性标记的[ 11 C] DAA1106和[ 18 F] FEDAA1106,[ 11 C] FEDAA1106的类似物,用于在脑和癌症中对PBR表达进行PET成像。前驱体N-(5-氟-2-苯氧基苯基)-N-(2-(2-氟乙氧基)-5-羟基苄基)乙酰胺(9)分多个步骤合成,化学产率中等至较高。前体9用[ 11 C] CH标记3 OTf,并通过高压液相色谱(HPLC)纯化,以提供目标放射性配体N-(5-氟-2-苯氧基苯基)-N-(2-(2-氟乙氧基)-5- [ 11 C]甲氧基苄基)乙酰胺( [ 11 C] FEDAA1106,[ 11 C] 10)以60–70%的放射化学收率,基于[