Patent ID: 8158181
Filing Date: 2012-04-17
Classification: A23L,C07C,C07H,Y10S

Abstract:
1. A method for preparing a compound of formula II: wherein R 1 is 1-β-D-glucopyranosyl, or 2-(1-β-D-glucopyranosyl)-1-β-D-glucopyranosyl, and R 2 is hydrogen, 1-β-D-glucopyranosyl, 2-(1-β-D-glucopyranosyl)-1-β-D-glucopyranosyl, 2,3-bis(1-β-D-glucopyranosyl)-1-β-D-glucopyranosyl, 2-(1-α-L-rhamnopyranosyl)-1-β-D-glucopyranosyl, 2-(1-α-L-rhamnopyranosyl)-3-(1-β-D-glucopyranosyl)-1-β-D-glucopyranosyl, or 2-(1-β-D-xylopyranosyl)-3-(1-β-D-glucopyranosyl)-1-β-D-glucopyranosyl, comprising the steps of: providing an acidic aqueous solution comprising a compound of formula I: wherein R heating the solution to a temperature within the range of 30° C. to 90° C. for a period of time greater than two days.