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Synthesis of mono- and dideoxygenated alpha,alpha-trehalose analogs.


ABSTRACT: In this work, we describe the synthesis and NMR characterization of four mono- and four dideoxygenated analogs of alpha,alpha-D-trehalose. The symmetrical (2,2'-, 3,3'-, 4,4'- and 6,6'-) dideoxy analogs were obtained via selective protection and subsequent radical deoxygenation of the desired hydroxyl group set. The unsymmetrical (2'-, 3'-, 4'- and 6'-) monodeoxy analogs were synthesized by desymmetrization of alpha,alpha-trehalose and subsequent deoxygenation under radical conditions. Complete assignment of all (1)H and (13)C resonances in the spectra of these deoxytrehaloses was achieved through the extensive use of 2D [(1)H,(1)H] and [(1)H,(13)C] correlation NMR experiments. The synthesis of these trehalose analogs sets the stage for future biochemical and NMR-based studies to probe the substrate interactions of trehalose with the recently identified mycobacterial sulfotransferase Stf0.

SUBMITTER: Lin FL 

PROVIDER: S-EPMC2072868 | biostudies-literature | 2007 Oct

REPOSITORIES: biostudies-literature

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Synthesis of mono- and dideoxygenated alpha,alpha-trehalose analogs.

Lin Fiona L FL   van Halbeek Herman H   Bertozzi Carolyn R CR  

Carbohydrate research 20070518 14


In this work, we describe the synthesis and NMR characterization of four mono- and four dideoxygenated analogs of alpha,alpha-D-trehalose. The symmetrical (2,2'-, 3,3'-, 4,4'- and 6,6'-) dideoxy analogs were obtained via selective protection and subsequent radical deoxygenation of the desired hydroxyl group set. The unsymmetrical (2'-, 3'-, 4'- and 6'-) monodeoxy analogs were synthesized by desymmetrization of alpha,alpha-trehalose and subsequent deoxygenation under radical conditions. Complete  ...[more]

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