A process for preparing 1-deoxy-1-methylamino-D-glucitol 2-(3,5-dichlorophenyl)-6-benzoxazolecarboxylate of formula I, comprising the steps of: a) converting a compound of formula II wherein R is C 1 - C 4 alkyl, into to 6-carboxy-2-(3,5-dichlorophenyl)-6-benzoxazole of formula III, wherein step a) comprises the substeps of: a1) treating the compound of formula II, at a temperature of from 50°C to 60°C, with a first inorganic base selected from the group consisting of sodium hydroxide and potassium hydroxide, in the presence of a first solvent or a first mixture of solvents to provide a compound of formula IIIa wherein M is a cation selected from the group consisting of sodium and potassium; and wherein first mixture of solvents is a mixture of tetrahydrofuran and water, a2) treating the compound of formula IIIa obtained in substep a1), preferably at a temperature of from 35°C to 70°C, more preferably of from 40°C to 60°C, more preferably of from 45°C to 55°C, with an acid, preferably a hydracid such as hydrochloric acid, hydrobromic acid or hydroiodic acid, more preferably hydrochloric acid, to provide 6-carboxy-2-(3,5-dichlorophenyl)-6-benzoxazole of formula III b) converting 6-carboxy-2-(3,5-dichlorophenyl)-6-benzoxazole of formula III into 1-deoxy-1-methylamino-D-glucitol 2-(3,5-dichlorophenyl)-6-benzoxazolecarboxylate of formula I. a) converting a compound of formula II wherein R is C 1 - C 4 alkyl, into to 6-carboxy-2-(3,5-dichlorophenyl)-6-benzoxazole of formula III, wherein step a) comprises the substeps of: a1) treating the compound of formula II, at a temperature of from 50°C to 60°C, with a first inorganic base selected from the group consisting of sodium hydroxide and potassium hydroxide, in the presence of a first solvent or a first mixture of solvents to provide a compound of formula IIIa wherein M is a cation selected from the group consisting of sodium and potassium; and wherein first mixture of solvents is a mixture of tetrahydrofuran and water, a2) treating the compound of formula IIIa obtained in substep a1), preferably at a temperature of from 35°C to 70°C, more preferably of from 40°C to 60°C, more preferably of from 45°C to 55°C, with an acid, preferably a hydracid such as hydrochloric acid, hydrobromic acid or hydroiodic acid, more preferably hydrochloric acid, to provide 6-carboxy-2-(3,5-dichlorophenyl)-6-benzoxazole of formula III wherein R is C 1 - C 4 alkyl, into to 6-carboxy-2-(3,5-dichlorophenyl)-6-benzoxazole of formula III, wherein step a) comprises the substeps of: a1) treating the compound of formula II, at a temperature of from 50°C to 60°C, with a first inorganic base selected from the group consisting of sodium hydroxide and potassium hydroxide, in the presence of a first solvent or a first mixture of solvents to provide a compound of formula IIIa wherein M is a cation selected from the group consisting of sodium and potassium; and wherein first mixture of solvents is a mixture of tetrahydrofuran and water, a2) treating the compound of formula IIIa obtained in substep a1), preferably at a temperature of from 35°C to 70°C, more preferably of from 40°C to 60°C, more preferably of from 45°C to 55°C, with an acid, preferably a hydracid such as hydrochloric acid, hydrobromic acid or hydroiodic acid, more preferably hydrochloric acid, to provide 6-carboxy-2-(3,5-dichlorophenyl)-6-benzoxazole of formula III a1) treating the compound of formula II, at a temperature of from 50°C to 60°C, with a first inorganic base selected from the group consisting of sodium hydroxide and potassium hydroxide, in the presence of a first solvent or a first mixture of solvents to provide a compound of formula IIIa wherein M is a cation selected from the group consisting of sodium and potassium; and wherein first mixture of solvents is a mixture of tetrahydrofuran and water, a2) treating the compound of formula IIIa obtained in substep a1), preferably at a temperature of from 35°C to 70°C, more preferably of from 40°C to 60°C, more preferably of from 45°C to 55°C, with an acid, preferably a hydracid such as hydrochloric acid, hydrobromic acid or hydroiodic acid, more preferably hydrochloric acid, to provide 6-carboxy-2-(3,5-dichlorophenyl)-6-benzoxazole of formula III b) converting 6-carboxy-2-(3,5-dichlorophenyl)-6-benzoxazole of formula III into 1-deoxy-1-methylamino-D-glucitol 2-(3,5-dichlorophenyl)-6-benzoxazolecarboxylate of formula I.