NOVEL GLUCITOL DERIVATIVE, PRODRUG THEREOF AND SALT THEREOF, AND THERAPEUTIC AGENT CONTAINING THE SAME FOR DIABETES.

摘要

A glucitol derivative having the function of reducing a blood sugar level and having preferable properties required of medicines, such as long-lasting drug activity; and a medicinal composition for use in the prevention or treatment of diseases attributable to hyperglycemia, such as diabetes, complications of diabetes, and obesity. The derivative is a compound represented by the formula (I): (wherein m is an integer selected among 1-3; R1 to R4 each independently is optionally substituted alkyl, etc.; Ar1 is optionally substituted naphthyl; and A is optionally substituted heteroaryl), a prodrug of the compound,or a pharmaceutically acceptable salt of either. Also provided are a medicine, a medicinal composition, and the like each containing the compound.