Propiophenone derivative and a process for preparing the same.

摘要

A propiophenone derivative of the formula [I]: wherein X is O, S or methylene, OY is a protected or unprotected OH, Z is beta -D-glucopyranosyl or 4-O-( alpha -D-glucopyranosyl)- beta -D-glucopyranosyl or wherein one or more hydroxy groups of these groups may optionally be acylated, and the dotted line means the presence or absence of a double bond, or a pharmaceutically acceptable salt thereof. Said compounds have excellent hypoglycemic activity so that they are useful in the prophylaxis or treatment of diabetes.