Add time:09/09/2019 Source:sciencedirect.com
IntroductionRadiolabeled 2-nitroimidazoles (azomycins) are a prominent class of biomarkers for PET imaging of hypoxia. [18F]Fluoro-azomycin-α-arabinoside ([18F]FAZA) – already in clinical use – may be seen as α-configuration nucleoside, but enters cells only via diffusion and is not transported by cellular nucleoside transporters. To enhance image contrast in comparison to [18F]FAZA our objective was to 18F-radiolabel an azomycin-2´-deoxyriboside with β-configuration ([18F]FAZDR, [18F]-β-8) to mimic nucleosides more closely and comparatively evaluate it versus [18F]FAZA.
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