We report the discovery of a new bioorthogonalclick‐and‐release reaction involving iminosydnones and strained alkynes. This transformation leads to two products resulting from the ligation and fragmentation of iminosydnones under physiological conditions. Optimized iminosydnones were successfully used to design innovative cleavable linkers for protein modification, thus opening up new areas in the
Straightforward Access to the Nitric Oxide Donor Azasydnone Scaffold by Cascade Reactions of Amines
作者:Egor S. Zhilin、Dmitry M. Bystrov、Ivan V. Ananyev、Leonid L. Fershtat、Nina N. Makhova
DOI:10.1002/chem.201903526
日期:2019.11.13
construction strategy involves a diazotization/azo coupling/elimination/double rearrangement cascade sequence of readily available amines. The current protocol enables the generation of a diverse array of azasydnones, including previously hardly accessible heteroaryl substituted azasydnones (25 examples, 70-97 % yield) with a good functional group tolerance under very mild conditions. Preliminary NO-releasing