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Synthèse et étude de C-glycosyl-b-amino acides et de leurs assemblages

Abstract : The objective of this work was the design and synthesis of short glycopeptides that can fold into well defined and typical secondary structures. b-Peptides frameworks are capable of forming structurally well-defined and predictable structures on short sequences and were therefore chosen for our purpose. In addition, b-peptide backbones are resistant to peptidases and proteases. We were interested in preparing such artificial oligomers modified, like a vaste majority of proteins, by linkage to carbohydrates. The study of carbohydrate-functionalized b-peptides is expected to bring important information concerning the structural stability of such glycoconjugates. In this context, we have presented the homo-oligomerisation of the unnatural glyco-amino acid into a new class of carbopeptoïds. The conformational preference of this first class of oligomers has been assessed by spectroscopic techniques (NMR, IR, CD) and calculations. Another part of this work concerned the synthesis of C-glycosyl-b3-amino acids and O-glycosyl-b3-amino acids as building blocks in the construction of glyco-b-peptides. Finally, we were interested in the synthesis of a new class of glyco-b-amino acids analogues, which are called Na-(C-glycosyl)-hydrazino acids.
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Submitted on : Thursday, March 29, 2018 - 11:38:00 AM
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Manuel Andreini. Synthèse et étude de C-glycosyl-b-amino acides et de leurs assemblages. Autre. Université Henri Poincaré - Nancy 1, 2008. Français. ⟨NNT : 2008NAN10023⟩. ⟨tel-01748550⟩



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