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        Synthesis  2004(18): 2991-2994  
DOI: 10.1055/s-2004-834889
   DOI: 10.1055/s-2004-834889
PAPER
© Georg Thieme Verlag Stuttgart · New YorkSynthesis of l-Pyranosides from 5-Enopyranosides by Diastereoselective Hydroboration/Oxidation
Weitere Informationen
            
               
                  
                        
                              Received
                              2 August 2004 
                      
Publikationsdatum:
22. Oktober 2004 (online)
            
         
      
   Publikationsverlauf
Publikationsdatum:
22. Oktober 2004 (online)
Abstract
Improved synthesis of l-pyranosides utilizing diastereoselective hydroboration/oxidation of 5-enopyranosides was investigated. A unique phenomenon in the diastereoselectivity of the hydroboration was incidentally found. The method was successfully applied to the synthesis of l-iduronic acid.
Key words
carbohydrates - diastereoselectivity - glycosides - hydroboration - synthesis
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References
Other reaction conditions (e.g., temperature, time, and solvent) were not changed.
16Compound 2a was easily separated from 3a using chromatography on silica gel.