Orthogonal dual thiol-chloroacetyl and thiol-ene couplings for the sequential one-pot assembly of heteroglycoclusters.
Beilstein J Org Chem
; 10: 1557-63, 2014.
Article
em En
| MEDLINE
| ID: mdl-25161711
ABSTRACT
We describe the first one-pot orthogonal strategy to prepare well-defined cyclopeptide-based heteroglycoclusters (hGCs) from glycosyl thiols. Both thiol-chloroactetyl coupling (TCC) and thiol-ene coupling (TEC) have been used to decorate cyclopeptides regioselectively with diverse combination of sugars. We demonstrate that the reaction sequence starting with TCC can be performed one-pot whereas the reverse sequence requires a purification step after the TEC reaction. The versatility of this orthogonal strategy has been demonstrated through the synthesis of diverse hGCs displaying alternating binary combinations of α-D-Man or ß-D-GlcNAc, thus providing rapid access to attractive heteroglycosylated platforms for diverse biological applications.
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MEDLINE
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En
Ano de publicação:
2014
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Article