Synthesis of a Mycobacterium tuberculosis tetra-acylated sulfolipid analogue and characterization of the chiral acyl chains using anisotropic NAD 2D-NMR spectroscopy. - Archive ouverte HAL
Article Dans Une Revue Journal of Organic Chemistry Année : 2013

Synthesis of a Mycobacterium tuberculosis tetra-acylated sulfolipid analogue and characterization of the chiral acyl chains using anisotropic NAD 2D-NMR spectroscopy.

Aurélie Lemétais
  • Fonction : Auteur
Yann Bourdreux
Philippe Lesot
Jonathan Farjon

Résumé

Tetra-O-acylated sulfolipids are metabolites found in the cell wall of Mycobacterium tuberculosis, the causative agent of tuberculosis. Their role in pathogenesis remains, however, undefined. Here we describe a novel access to model tetra-O-acylated trehalose sulfate derivatives having simple acyl chains. The trehalose core was regioselectively protected using a tandem procedure with catalytic iron(III) chloride hexahydrate and further desymmetrized. Model chiral fatty acids, prepared by a zinc-mediated cross-coupling, were incorporated into the trehalose core. The enantiomeric excess of the chiral fatty acids has been measured by natural abundance deuterium (NAD) 2D-NMR spectroscopy in a polypeptide based chiral liquid crystal. The synthetic approach established for the model compounds can easily be developed for the preparation of other analogues and natural sulfolipids.

Domaines

Chimie organique
Fichier non déposé

Dates et versions

hal-00910978 , version 1 (28-11-2013)

Identifiants

Citer

Aurélie Lemétais, Yann Bourdreux, Philippe Lesot, Jonathan Farjon, Jean-Marie Beau. Synthesis of a Mycobacterium tuberculosis tetra-acylated sulfolipid analogue and characterization of the chiral acyl chains using anisotropic NAD 2D-NMR spectroscopy.. Journal of Organic Chemistry, 2013, 78 (15), pp.7648-57. ⟨10.1021/jo4012255⟩. ⟨hal-00910978⟩
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