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Synthesis of glycosyl esters from phosphoroates derivatives of 2‐bromosugars

Synthesis of glycosyl esters from phosphoroates derivatives of 2‐bromosugars This work presents the synthesis of glycosyl esters of 2‐bromo‐2‐deoxy‐D‐hexopyranose, having the α‐D‐manno (10a–cα), β‐D‐gluco (11a–dβ) and α‐D‐gluco (11a,bα) configuration, by a stereoselective reaction between phosphoroates 3–8 and carboxylic acids 9a–d. Derivatives of 10a–c and 11a–d are formed in an overall quantitative yield, in an aprotic solvent in the presence of silver salts as a leaving group activator. The phosphoroselenoate of 3 was obtained by the condensation reaction of the triethylammonium salt of phosphoroseleno acid 2 with α‐1,2‐D‐manno‐pyranosyl dibromide 1 with high stereoselectivity. The structures of the compounds 3,10a–c and 11a–d were established by 1H and 13C NMR spectra and by elemental analyses. © 2000 John Wiley & Sons, Inc. Heteroatom Chem 11:292–298, 2000 http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Heteroatom Chemistry Wiley

Synthesis of glycosyl esters from phosphoroates derivatives of 2‐bromosugars

Heteroatom Chemistry , Volume 11 (4) – Jan 1, 2000

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References (19)

Publisher
Wiley
Copyright
Copyright © 2000 John Wiley & Sons, Inc.
ISSN
1042-7163
eISSN
1098-1071
DOI
10.1002/1098-1071(2000)11:4<292::AID-HC9>3.0.CO;2-A
Publisher site
See Article on Publisher Site

Abstract

This work presents the synthesis of glycosyl esters of 2‐bromo‐2‐deoxy‐D‐hexopyranose, having the α‐D‐manno (10a–cα), β‐D‐gluco (11a–dβ) and α‐D‐gluco (11a,bα) configuration, by a stereoselective reaction between phosphoroates 3–8 and carboxylic acids 9a–d. Derivatives of 10a–c and 11a–d are formed in an overall quantitative yield, in an aprotic solvent in the presence of silver salts as a leaving group activator. The phosphoroselenoate of 3 was obtained by the condensation reaction of the triethylammonium salt of phosphoroseleno acid 2 with α‐1,2‐D‐manno‐pyranosyl dibromide 1 with high stereoselectivity. The structures of the compounds 3,10a–c and 11a–d were established by 1H and 13C NMR spectra and by elemental analyses. © 2000 John Wiley & Sons, Inc. Heteroatom Chem 11:292–298, 2000

Journal

Heteroatom ChemistryWiley

Published: Jan 1, 2000

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