Propiophenone derivative and a process for preparing the same
申请人:Tanabe Seiyaku Co., Ltd.
公开号:US05830873A1
公开(公告)日:1998-11-03
A propiophenone derivative of the formula \x9bI!: ##STR1## 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.
A novel series of 4'-dehydroxyphlorizin derivatives was synthesized and the effects of these compounds on urinary glucose excretion were evaluated in rats. There was a strict structural requirement for activity. Introduction of a small substituent or a flat ring at the 3- and/or the 4-position on the A ring was permissible, but any change at the bridge part between the A and B rings or in the sugar moiety resulted in complete loss of activity. The 6'-OH group on the B ring was also necessary, and even small structural modifications of the 6'-OH group reduced the activity considerably. Among the compounds synthesizez, the 5-benzofuryl derivative 25 was the most potent and was selected as a new lead for further structure-activity relationship investigations.