Post-radiolabeling thioether oxidation to enhance the bioorthogonal reactivity of 18F-tetrazines
作者:Martin Wilkovitsch、Dennis Svatunek、Hannes Mikula、Christoph Denk
DOI:10.1007/s00706-023-03140-w
日期:2023.12
Radiolabeled 1,2,4,5-tetrazines are powerful heterocyclic agents for bioorthogonal PET imaging due to their fast cycloaddition with trans-cyclooctenes. However, fluorine-18 radiolabeling of highly reactive tetrazines is often not feasible due to limited compound stability. We demonstrate that post-radiolabeling oxidation of thioether functionalities is a viable and transferable strategy to avoid these
放射性标记的 1,2,4,5-四嗪是用于生物正交 PET 成像的强大杂环试剂,因为它们能够与反式环辛烯快速环加成。然而,由于化合物稳定性有限,高活性四嗪的氟 18 放射性标记通常不可行。我们证明硫醚官能团的放射性标记后氧化是避免这些限制的可行且可转移的策略,从而能够合成高反应性的18 F-四嗪。 图形概要