Summary.
N-Glycosides of Asn and homologues have been synthesized starting from hexafluoroacetone-protected ω-activated Asp, Glu, and Aad derivatives and glycosylamines. The synthetic value of the new building blocks was demonstrated by the concise incorporation of N-glycosylated Asn, Gln, and Aad ω-amides into glycopeptides.
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Böttcher, C., Spengler, J., Essawy, S. et al. Hexafluoroacetone as Protecting and Activating Reagent. A New Approach to N-Glycosides. Monatshefte für Chemie 135, 853–863 (2004). https://doi.org/10.1007/s00706-003-0145-7
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DOI: https://doi.org/10.1007/s00706-003-0145-7