Automated synthesis of 4-[(18)F]fluoroanisole, [(18)F]DAA1106 and 4-[(18)F]FPhe using Cu-mediated radiofluorination under "minimalist" conditions

Johannes Zischler; Philipp Krapf; Raphael Richarz; Boris D Zlatopolskiy; Bernd Neumaier

doi:10.1016/j.apradiso.2016.04.030

Automated synthesis of 4-[(18)F]fluoroanisole, [(18)F]DAA1106 and 4-[(18)F]FPhe using Cu-mediated radiofluorination under "minimalist" conditions

Appl Radiat Isot. 2016 Sep:115:133-137. doi: 10.1016/j.apradiso.2016.04.030. Epub 2016 May 27.

Authors

Johannes Zischler¹, Philipp Krapf¹, Raphael Richarz¹, Boris D Zlatopolskiy², Bernd Neumaier³

Affiliations

¹ Institute of Radiochemistry and Experimental Molecular Imaging, University Clinic Cologne, Kerpener Str. 62, 50937 Cologne, Germany; Institute of Neuroscience and Medicine, INM-5: Nuclear Chemistry, Forschungszentrum Jülich GmbH, 52425 Jülich, Germany; Max Planck Institute for Metabolism Research, Gleueler Str. 50, 50931 Cologne, Germany.
² Institute of Radiochemistry and Experimental Molecular Imaging, University Clinic Cologne, Kerpener Str. 62, 50937 Cologne, Germany; Max Planck Institute for Metabolism Research, Gleueler Str. 50, 50931 Cologne, Germany.
³ Institute of Radiochemistry and Experimental Molecular Imaging, University Clinic Cologne, Kerpener Str. 62, 50937 Cologne, Germany; Institute of Neuroscience and Medicine, INM-5: Nuclear Chemistry, Forschungszentrum Jülich GmbH, 52425 Jülich, Germany; Max Planck Institute for Metabolism Research, Gleueler Str. 50, 50931 Cologne, Germany. Electronic address: bernd.neumaier@uk-koeln.de.

PMID: 27372807
DOI: 10.1016/j.apradiso.2016.04.030

Abstract

The application of the "minimalist" approach to Cu-mediated radiofluorination allows the efficient preparation of (18)F-labeled arenes regardless of their electronic properties. The implementation of this methodology on a commercially available synthesis module (hotbox(three), Scintomics, Germany) enabled the automated production of 4-[(18)F]fluoroanisole as well as the clinically relevant PET-tracers, 4-[(18)F]FPhe and [(18)F]DAA1106, in radiochemical yields of 41-61% and radiochemical purities of >95% within 30-60min. These results demonstrated the high efficacy and versatility of the developed method that will open up opportunities for a broad application of Cu-mediated radiofluorination in PET-chemistry.

Keywords: Automated radiosynthesis; Cu-mediated radiolabeling; Minimalist approach; PET-tracers; [(18)F]Fluoride.