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- W4308393600 abstract "Chemical synthesis of proteins bearing base-labile post-translational modifications (PTMs) is a challenging task. For instance, O-acetylation and S-palmitoylation PTMs cannot survive Fmoc removal conditions during Fmoc-solid phase peptide synthesis (SPPS). In this work, we developed a new Boc-SPPS-based strategy for the synthesis of peptide C-terminal salicylaldehyde (SAL) esters, which are the key reaction partner in Ser/Thr ligation and Cys/Pen ligation. The strategy utilized the semicarbazone-modified aminomethyl (AM) resin, which could support the Boc-SPPS and release the peptide SAL ester upon treatment with TFA/H2 O and pyruvic acid. The non-oxidative aldehyde regeneration was fully compatible with all the canonical amino acids. Armed with this strategy, we finished the syntheses of the O-acetylated protein histone H3(S10ac, T22ac) and the hydrophobic S-palmitoylated peptide derived from caveolin-1." @default.
- W4308393600 created "2022-11-11" @default.
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- W4308393600 date "2022-11-29" @default.
- W4308393600 modified "2023-10-15" @default.
- W4308393600 title "Chemical Synthesis of Proteins with Base‐Labile Posttranslational Modifications Enabled by a Boc‐SPPS Based General Strategy Towards Peptide C‐Terminal Salicylaldehyde Esters" @default.
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- W4308393600 doi "https://doi.org/10.1002/anie.202214053" @default.
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