C - Chemistry – Metallurgy – 07 – D
Patent
C - Chemistry, Metallurgy
07
D
C07D 493/18 (2006.01) C07H 19/01 (2006.01)
Patent
CA 2735781
The invention relates to a method for preparing 1,6:2,3-dianhydro-ß-D-mannopyranose and is characterized in that it includes a step of cyclizing the compound B, where R is an activating agent, in the presence of a base selected from among ammonium hydroxides and mineral bases.
Procédé de préparation du 1,6:2,3-dianhydro-.beta.-D-mannopyranose, caractérisé en ce qu'il comprend une étape de cyclisation du composé B dans lequel R représente un agent activant, en présence d'une base choisie parmi les hydroxydes d'ammonium et les bases minérale.
Bouvenot Laurent
Cruciani Paul
Largeau Denis
Rovera Jean-Claude
Robic
Sanofi-Aventis
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