Fmoc-based solid-phase synthesis of adenylylated peptides using diester-type adenylylated amino acid derivatives
作者:Keiji Ogura、Akira Shigenaga、Koji Ebisuno、Hiroko Hirakawa、Akira Otaka
DOI:10.1016/j.tetlet.2012.04.063
日期:2012.7
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. (C) 2012 Elsevier Ltd. All rights reserved.