|
1
|
Wu X, Chen W, Deng H, Wang L, Nicewicz DA, Li Z, Wu Z. Manufacturing 6-[ 18F]Fluoro- L-DOPA via Flow Chemistry-Enhanced Photoredox Radiofluorination. Org Lett 2024; 26:4308-4313. [PMID: 38728659 DOI: 10.1021/acs.orglett.4c01114] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/12/2024]
Abstract
In this study, we introduce a practical methodology for the synthesis of PET probes by seamlessly combining flow chemistry with photoredox radiofluorination. The clinical PET tracer 6-[18F]FDOPA was smoothly prepared in a 24.3% non-decay-corrected yield with over 99.0% radiochemical purity (RCP) and enantiomeric excess (ee), notably by a simple cartridge-based purification. The flow chemistry-enhanced photolabeling method supplies an efficient and versatile solution for the synthesis of 6-[18F]FDOPA and for more PET tracer development.
Collapse
Affiliation(s)
- Xuedan Wu
- Biomedical Research Imaging Center, Department of Radiology, and UNC Lineberger Comprehensive Cancer Center, University of North Carolina-Chapel Hill, 125 Mason Farm Road, Marsico Hall, Chapel Hill, North Carolina 27599, United States
- LED Radiofluidics Corp., 250 Bell Tower Drive, Genome Science Building, Chapel Hill, North Carolina 27599, United States
| | - Wei Chen
- Biomedical Research Imaging Center, Department of Radiology, and UNC Lineberger Comprehensive Cancer Center, University of North Carolina-Chapel Hill, 125 Mason Farm Road, Marsico Hall, Chapel Hill, North Carolina 27599, United States
| | - Huaifu Deng
- Biomedical Research Imaging Center, Department of Radiology, and UNC Lineberger Comprehensive Cancer Center, University of North Carolina-Chapel Hill, 125 Mason Farm Road, Marsico Hall, Chapel Hill, North Carolina 27599, United States
| | - Li Wang
- Biomedical Research Imaging Center, Department of Radiology, and UNC Lineberger Comprehensive Cancer Center, University of North Carolina-Chapel Hill, 125 Mason Farm Road, Marsico Hall, Chapel Hill, North Carolina 27599, United States
| | - David A Nicewicz
- Department of Chemistry, University of North Carolina-Chapel Hill, 125 South Road, Chapel Hill, North Carolina 27514, United States
| | - Zibo Li
- Biomedical Research Imaging Center, Department of Radiology, and UNC Lineberger Comprehensive Cancer Center, University of North Carolina-Chapel Hill, 125 Mason Farm Road, Marsico Hall, Chapel Hill, North Carolina 27599, United States
| | - Zhanhong Wu
- Biomedical Research Imaging Center, Department of Radiology, and UNC Lineberger Comprehensive Cancer Center, University of North Carolina-Chapel Hill, 125 Mason Farm Road, Marsico Hall, Chapel Hill, North Carolina 27599, United States
| |
Collapse
|
|
2
|
Abstract
ABSTRACT A 39-year-old woman with no significant medical history underwent a brain MRI because of headaches and dysarthria having lasted 3 weeks. A tumor lesion was suspected. PET imaging was decided. She underwent FDG and FDOPA PET, leading to the diagnosis of low-grade glioma. Three months later, a new imaging assessment was organized. It showed a decrease in the hypermetabolism of the lesion and the appearance of a second lesion questioning the diagnosis. Further assessment led to the conclusion of a multiple sclerosis. This case illustrates that FDOPA PET uptake should be interpreted with caution in patients with suspected primary brain tumors.
Collapse
|