18938-60-8Relevant articles and documents
Synthesis and preliminary biological evaluation of O-2((2-[ 18F]fluoroethyl)methylamino)ethyltyrosine ([18F]FEMAET) as a potential cationic amino acid PET tracer for tumor imaging
Chiotellis, Aristeidis,Mueller, Adrienne,Weyermann, Karin,Leutwiler, Dominique S.,Schibli, Roger,Ametamey, Simon M.,Kraemer, Stefanie D.,Mu, Linjing
, p. 1947 - 1959 (2014)
Amino acid transport is an attractive target for oncologic imaging. Despite a high demand of cancer cells for cationic amino acids, their potential as PET probes remains unexplored. Arginine, in particular, is involved in a number of biosynthetic pathways
Development of a Photoactivatable Protein Phosphatase-1-Disrupting Peptide
Henschke, Lars,K?hn, Maja,Makotta, Leslie,Trebacz, Malgorzata,Wang, Yansong
, (2020/02/04)
We describe here the development of a photoreleasable version of a protein phosphatase-1 (PP1)-disrupting peptide (PDP-Nal) that triggers protein phosphatase-1 activity. PDP-Nal is a 23 mer that binds to PP1 through several interactions. It was photocaged
Base/Cryptand/Metal-Free Automated Nucleophilic Radiofluorination of [18F]FDOPA from Iodonium Salts: Importance of Hydrogen Carbonate Counterion
Maisonial-Besset, Aurélie,Serre, Audrey,Ouadi, Ali,Schmitt, Sébastien,Canitrot, Damien,Léal, Fernand,Miot-Noirault, Elisabeth,Brasse, David,Marchand, Patrice,Chezal, Jean-Michel
, p. 7058 - 7065 (2019/01/04)
As evidenced by the number of publications and patents published in the last years, the radiosynthesis of 6-[18F]fluoro-3,4-dihydroxy-L-phenylalanine ([18F]FDOPA) using the nucleophilic [18F]F- process remains currently a challenge for the radiochemists scientific community even if promising methods for the radiofluorination of electron-rich aromatic structures were recently developed from arylboronate, arylstannane or iodonium salt precursors. In such context, based on the use of an iodonium triflate salt precursor, we optimized a fast and efficient radiofluorination route fully automated and free from any base, cryptand or metal catalyst for the radiosynthesis of [18F]FDOPA. Using this method, this clinically relevant radiotracer was produced in 64 min, 27–38 % RCY d.c. (n = 5), >99 % RCP, >99 % ee., and high Am 170–230 GBq/μmol. In addition, this optimization study clearly highlighted the important role of a triflate-hydrogen carbonate counterion exchange during the radiolabeling process to achieve high fluorine-18 incorporation yields.