Year: 2024
Type: article
Abstract: In this Letter, we report a direct and robust desulfurization method employing water-soluble phosphine, specifically tris(2-carboxyethyl)phosphine hydrochloride (TCEP), and tetrahydroxydiboron (B 2 (OH) 4 ), which serves as a radical initiator. This innovative reaction exhibits compatibility with a diverse array of substrates, including cysteine residues in chemically synthesized oligopeptides and cyclic peptides, alkyl thiols in bioactive molecules, disulfides in commercial proteins, and selenocysteine. We optimized the reaction conditions to minimize the formation of undesired oxidized and borylated byproducts. Furthermore, the refined desulfurization process is executed after native chemical ligation (NCL) in a single pot, streamlining the existing synthetic approaches. This demonstrates its potential applications in the synthesis of complex peptides and proteins, showcasing a significant advancement in the field.
Source: Organic Letters
Authors: Ruiheng Jing, Maciej A. Walczak
Institution: University of Colorado Boulder
Language: English
Subfield: Molecular Biology
Domain: Life Sciences
Open Access status: green
Awards: G5293140768, G9000277214
OpenAlex ID: W4393097175