General Method for the<sup>11</sup>C-Labeling of 2-Arylpropionic Acids and Their Esters: Construction of a PET Tracer Library for a Study of Biological Events Involved in COXs Expression
作者:Misato Takashima-Hirano、Miho Shukuri、Tadayuki Takashima、Miki Goto、Yasuhiro Wada、Yasuyoshi Watanabe、Hirotaka Onoe、Hisashi Doi、Masaaki Suzuki
DOI:10.1002/chem.200903044
日期:2010.4.12
corresponding esters under basic conditions. One‐pot hydrolysis of the above [11C]methylation products also allows the synthesis of desired 11C‐incorporated acids. We demonstrated the utility of this method in the syntheses of six PET tracers, [11C]Ibuprofen, [11C]Naproxen, [11C]Flurbiprofen, [11C]Fenoprofen, [11C]Ketoprofen, and [11C]Loxoprofen. Notably, we found that their methyl esters were particularly
环氧合酶(COX)是前列腺素生物合成中的关键酶,可调节多种生物学功能,例如疼痛,发烧等。为了通过正电子发射断层扫描(PET)进行体内COX成像,我们开发了一种将11 C放射性核素掺入各种具有共同甲基化结构的2-芳基丙酸中的方法,尤其是在非甾体类抗炎药(NSAIDs)中。因此,我们在碱性条件下通过[ 11 C] CH 3 I与相应酯生成的烯醇酸酯中间体反应,基于快速C- [ 11 C]甲基化,开发了一种新颖的11 C-放射性标记方法。一锅以上水解[ 11C]甲基化产物还可以合成所需的11 C-结合酸。我们证明了该方法在合成6种PET示踪剂,[ 11 C]布洛芬,[ 11 C]萘普生,[ 11 C]氟比洛芬,[ 11 C]芬诺洛芬,[ 11 C]酮洛芬和[ 11 C]时的效用。洛索洛芬。值得注意的是,我们发现它们的甲酯特别适合用作研究神经炎症的放射菌。对患有脂多糖(LPS)引起的脑部炎症的大鼠