Patent ID: 7622563
Filing Date: 2009-11-24
Classification: A61K,A61P,A61Q,C07H

Abstract:
1. A method for preparing a glycoside represented by formula (3): wherein: R1 represents a C any one of R2, R3 and R4 represents a hydroxyl; each of the remaining two of R2, R3, and R4 represent a residue formed by reacting glucose pentaacetate with a hydroxyl group of an alkyl gallate; and the method comprises the step of: reacting an alkyl gallate having a C wherein a distillate comprising said acetic acid and organic solvent both removed from the reaction system is distilled off at a rate of 20 to 500 g/hr relative to one mol of the alkyl gallate having C wherein an amount of the substrate concentration is 5 percent to 50 percent by weight.