Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1877273 | Applied Radiation and Isotopes | 2007 | 12 Pages |
Abstract
Previous reports have designated the labeled derivatives of [4-(phenylamino)-quinazoline-6-yl]-amide group as the most promising EGFR-PET imaging agent candidates. To further improve tracer qualifications and increase stability and solubility, additional derivatives of this group substituted at the 7-position with various lengths of fluoro-polyethyleneglycol (F-PEG) chains were synthesized. These novel derivatives inhibited EGFR autophosphorylation with IC50IC50 values of 5–40 nM. The compounds were successfully labeled with fluorine-18 at the PEG chain via a three-step radiosynthesis route. The labeled final products were obtained with a 13–32% decay corrected radiochemical yield, 99% radiochemical purity, and high specific activity.
Keywords
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Physical Sciences and Engineering
Physics and Astronomy
Radiation
Authors
Samar Dissoki, Yoel Aviv, Desideriu Laky, Galith Abourbeh, Alexander Levitzki, Eyal Mishani,