Novel method for making palatinitol

C - Chemistry – Metallurgy – 07 – H

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C07H 15/04 (2006.01)

Patent

CA 2209269

A novel method for making palatinitol, comprising a first step of epimerising isomaltose under conditions enabling a mixture of alpha -D-glucopyranosyl-(1}6)-D-mannose and isomaltose to be achieved, a second step of depleting the isomaltose in the epimerised mixture to give a roughly equimolecular proportion of alpha -D-glucopyranosyl-(1}6)-D-mannose and isomaltose, and a third step of catalytically hydrogenating the roughly equimolecular mixture.

L'invention a pour objet un nouveau procédé de fabrication du palatinitol, dans lequel on procède: dans une première étape, à l'épimérisation de l'isomaltose dans des conditions permettant d'obtenir un mélange de .alpha.-D-glucopyranosyl-(1.fwdarw.6)-D-mannose et d'isomaltose; dans une deuxième étape, à l'appauvrissement en isomaltose de ce mélange épimérisé de manière à obtenir un nouveau mélange contenant une proportion grossièrement équimoléculaire de .alpha.-D- glucopyranosyl-(1.fwdarw.6)-D-mannose et d'isomaltose; et dans une troisième étape, à l'hydrogénation catalytique de ce mélange grossièrement équimoléculaire.

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