Abstract
[18F] SR144385 and [18F] SR147963 were synthesized in a multistep reaction in which fluorine-18 was introduced by nucleophilic halogen displacement on a bromo precursor. The fluorine-18-labeled intermediate was deprotected and coupled with the appropriate alkyl amine to give the final products. Both radioligands had appropriate regional brain distribution for cannabinoid receptors with a target to nontarget ratio of 1.7 for [18F] SR147963 and 2.5 for [18F] SR144385 at 60 and 90 min postinjection, respectively. The uptake of both tracers was blocked with a 1 mg/kg dose of SR141716A.
Original language | English (US) |
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Pages (from-to) | 757-762 |
Number of pages | 6 |
Journal | Nuclear Medicine and Biology |
Volume | 27 |
Issue number | 8 |
DOIs | |
State | Published - 2000 |
Keywords
- Cannabinoid antagonist
- Fluorine-18
- Mice
- PET
ASJC Scopus subject areas
- Molecular Medicine
- Radiology Nuclear Medicine and imaging
- Cancer Research