Back to results
US 2011/0213141 A1Published application
Method for preparing 1,6:2,3-dianhydro-beta-d-mannopyranose
AssigneeSanofi-Aventis
InventorsPierre Jean Grossi, Christian Hoff, Jean-Claude Rovera, Raphael Sole
Life of this patent
Estimating the term…
Abstract
The invention relates to a method for preparing 1,6:2,3-dianhydro-â-D-mannopyranose and is characterized in that it includes a step of cyclizing the compound C, where R is an alykyl group and R′ is an activating agent, in an alcohol/alcoholate mixture under anhydrous conditions.
Claims12
Process for the preparation of compound (I):
- characterized in that it comprises a stage of cyclisation of compound C:
- in which R represents an alkyl group comprising from 1 to 4 carbon atoms and R′ represents an activating agent, in an alcohol/alkoxide mixture under anhydrous conditions.
Dependencies are inferred from the claim text.