| 摘要 |
The present invention relates to a method for preparing the glucopyranosyloxypyrazole derivatives which are useful as agents for the prevention or treatment of a disease associated with hyperglycemia such as diabetes, diabetic complications, obesity or the like. A glucopyranosyloxypyrazole derivative can be easily and efficiently prepared by allowing a benzylpyrazole derivative represented by the general formula: wherein R1, R2, R3, R4 and R5 may be the same or different, for example each of them is a hydrogen atom, a halogen atom or an alkyl, alkoxy, arylmethyloxy group or the like, R6 is an alkyl group, for example R7 is a hydrogen atom or an alkyl, alkoxy, arylmethyloxy group or the like, to react with a compound represented by the general formula: wherein as an example, PG1 is a pivaloyl group or the like, as an example, X1 is a bromine atom or the like, therefore the present invention is extremely useful as a method for preparing pharmaceutical compounds.
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