Abstract
Peptide nucleic acids have become, arguably, one of the most interesting of DNA mimics. Herein the efficient solution phase synthesis of four novel 1-(4,4-dimethyl-2,6-dioxacyclohexylidene)ethyl/4-methoxytrityl (Dde/Mmt) protected PNA monomers is reported which were then used to synthesise PNA–peptide conjugates through a mild Dde deprotection strategy, which was fully orthogonal to Fmoc chemistry, allowing at will Fmoc peptide and Dde–PNA synthesis.
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