Chemoselective Staudinger‐Phosphite Reaction of Azides for the Phosphorylation of Proteins

Abstract

Extending the toolbox: The title reaction was identified as a chemoselective means to modify azides in peptides and proteins in high yields at room temperature in various solvents including aqueous buffers at physiological pH. In combination with nonnatural protein translation the Staudinger-phosphite reaction allows the site-specific incorporation of phosphorylated Tyr analogues in proteins.