Late‐Stage Isotopic Carbon Labeling of Pharmaceutically Relevant Cyclic Ureas Directly from CO2. (3rd July 2018)

• Record Type: Journal Article
• Authors: Del Vecchio, Antonio; Caillé, Fabien; Chevalier, Arnaud; Loreau, Olivier; Horkka, Kaisa; Halldin, Christer; Schou, Magnus; Camus, Nathalie; Kessler, Pascal; Kuhnast, Bertrand; Taran, Frédéric; Audisio, Davide
• Is Part Of: Angewandte Chemie. Volume 130:Number 31(2018)
• Page Start: 9892
• Page End: 9896
• Publication Date: 2018-07-03
• Subjects: Heterocyclen -- Isotopenmarkierung -- Kohlendioxid -- Kohlenstoff-11 -- Kohlenstoff-14; Chemistry -- Periodicals; 540
• DOI: 10.1002/ange.201804838
• Languages: English
• ISSNs: 0044-8249

Abstract

Abstract: A robust, click‐chemistry‐inspired procedure for radiolabeling of cyclic ureas was developed. This protocol, suitable for all carbon isotopes ( 11 C, 13 C, 14 C), is based on the direct functionalization of carbon dioxide: the universal building block for carbon radiolabeling. The strategy is operationally simple and reproducible in different radiochemistry centers, exhibits remarkably wide substrate scope with short reaction times, and demonstrates superior reactivity as compared to previously reported systems. With this procedure, a variety of pharmaceuticals and an unprotected peptide were labeled with high radiochemical efficiency.