Abstract
Phosphodiester-type adenylylated (AMPylated) Ser, Thr, and Tyr derivatives were developed for Fmoc solid phase peptide synthesis of AMPylated peptides. One-pot/sequential reaction consisting of condensation of an N-nonprotected adenosine derivative and Fmoc-Ser/Thr/Tyr-OAllyl using allyl-N,N-diisopropylchlorophosphoramidite and subsequent oxidation with m-chloroperbenzoic acid gave phosphotriester-type AMPylated Ser/Thr/Tyr derivatives. After Pd(0)-mediated deprotection of allyl groups, the resulting phosphodiester-type AMPylated Ser/Thr/Tyr derivatives were successfully incorporated into peptides by standard Fmoc solid phase peptide synthesis without significant side reactions including dehydroalanine formation.
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