ArticleBioorganic & medicinal chemistry letters2015
(18)F-Fluorodeoxyglucamines: Reductive amination of hydrophilic (18)F-fluoro-2-deoxyglucose with lipophilic amines for the development of potential PET imaging agents.
Article in Bioorganic & medicinal chemistry letters, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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2 authors at 1 institution in 1 country.
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Abstract
Maillard reaction of (18)F-FDG with biological amines results in the formation of (18)F-fluorodeoxyglycosylamines ((18)F-FDGly) as pseudo-Amadori products. To increase in vivo stability, we report the reductive amination of FDGly to provide reduced fluorodeoxyglucamines (FDGlu). (18)F-Fluorodeoxyglucamines ((18)F-FDGlu), resulting from linking (18)F-FDG (hydrophilic) to lipophilic molecules containing amine group may be useful as positron emission tomography (PET) imaging agents. Two amine derivatives, 7-chloro-8-hydroxy-3-methyl-l-(3'-aminophenyl)-2,3,4,5-tetrahydro-lH-3-benzazepine (SCH 38548 for dopamine D1 receptors) and BTA-0 (for Aβ amyloid) were reacted with FDG under reductive amination conditions to yield stable products, FDGluSCH and FDGluBTA. FDGluSCH had high binding affinity to rat brain dopamine D1 receptors with a Ki of 19.5 nM while FDGluBTA had micromolar affinity for human frontal cortex Aβ plaques. (18)F-FDGluSCH was prepared in low to modest radiochemical yields and preliminary results showed binding to the rat striatum in brain slices. In vivo stability of(18)F-FDGluSCH needs to be determined. Our results suggest that (18)F-FDG is a useful 'radioactive synthon' for PET radiotracer development. Its usefulness will have to be determined on the basis of the structure-activity relationship of the target molecule.
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