N‐Alkylated C‐Glycosyl Amino Acid Derivatives: Synthesis by a One‐Pot Four‐Component Ugi Reaction

Crosbi ID278176
Bib IRB ID1060295
Year2020
StatusObjavljeno
Typeprilog u časopisu
Subtypeizvorni znanstveni rad
AuthorsVlahoviček-Kahlina, Kristina ; Štefanić, Zoran ; Vazdar, Katarina ; Jerić, Ivanka
JournalChemPlusChem
Volume85
Issue5
Pagesstr. 838-844
DOI10.1002/cplu.202000177
EISSN2192-6506
Titles

en original N‐Alkylated C‐Glycosyl Amino Acid Derivatives: Synthesis by a One‐Pot Four‐Component Ugi Reaction

Abstracts
en original

C-glycosides represent an important group of naturally occurring glycosylation derivatives but also efficient mimetics of native O- glycosides. We describe here a one-pot four- component methodology toward a library of N- alkylated C-glycosyl amino acid derivatives comprising seven different isopropylidene- protected carbohydrate units. The applied methodology tolerates different amines and isocyanides and provides access to Ugi products in yields up to 85 %. X-ray analysis of selected products bearing three different carbohydrate motifs and comparison of their crystal structures with similar ones deposited in Cambridge Crystallographic Database revealed that four structures adopt different conformations, mostly not typical for peptide structures. This property opens the possibility to exploit here described N-alkylated C- glycosyl amino acid derivatives as templates for accessing different biotic and abiotic secondary structures.

Keywords

en original amino acids ; carbohydrates ; C-glycosides ; peptidomimetics ; Ugi reaction

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Citations
Vlahoviček-Kahlina, Kristina ; Štefanić, Zoran ; Vazdar, Katarina ; Jerić, Ivanka
N‐Alkylated C‐Glycosyl Amino Acid Derivatives: Synthesis by a One‐Pot Four‐Component Ugi Reaction // ChemPlusChem, 85 (2020), 5; 838-844. doi: 10.1002/cplu.202000177
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