Solid-Phase Synthesis of Phosphonylated Peptides

Abstract

We report the solid-phase syntheses of two series of phosphonylated peptides using Fmoc-protected amino acids. The peptides corresponded to regions containing phosphonylated Ser195 in the active site of butyrylcholinesterase and Tyr411 of ­human serum albumin. The phosphonylated Fmoc-protected amino acids were used in solid-phase peptide synthesis to prepare the peptides. Fmoc-serine and Fmoc-tyrosine with benzyl ester protection were treated with alkyl methylphosphonic monochloridates to phosphonylate the side-chain hydroxy groups. The phosphonylated peptides were designed to mimic the protein region after exposure of the proteins to organophosphorus agents.

Key words

organophosphonates - nerve agent - phosphonylated peptides - peptide synthesis - solid phase

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