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Exploiting protected maleimides to modify oligonucleotides, peptides and peptide nucleic acids
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This manuscript reviews the possibilities offered by 2,5-dimethylfuran-protected maleimides. Suitably derivatized building blocks incorporating the exo Diels-Alder cycloadduct can be introduced at any position of oligonucleotides, peptide nucleic acids, peptides and peptoids, making use of standard solid-phase procedures. Maleimide deprotection takes place upon heating, which can be followed by either Michael-type or Diels-Alder click conjugation reactions. However, the one-pot procedure in which maleimide deprotection and conjugation are simultaneously carried out provides the target conjugate more quickly and, more importantly, in better yield. This procedure is compatible with conjugates involving oligonucleotides, peptides and peptide nucleic acids. A variety of cyclic peptides and oligonucleotides can be obtained from peptide and oligonucleotide precursors incorporating protected maleimides and thiols.
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PARIS, Clément, et al. Exploiting protected maleimides to modify oligonucleotides, peptides and peptide nucleic acids. Molecules. 2015. Vol. 20, num. 6389-6408. ISSN 1420-3049. [consulted: 8 of August of 2026]. Available at: https://hdl.handle.net/2445/67190