CHROMONE DERIVATIVE AND ALDOSE REDUCTASE INHIBITOR CONTAINING THE SAME AS ACTIVE INGREDIENT
申请人:TSUMURA & CO.
公开号:EP0516860A1
公开(公告)日:1992-12-09
A chromone derivative represented by general formula (I) and an aldose reductase inhibitor containing the same as the active ingredient wherein R₁ and R₂ represent each lower alkyl, etc.; R₃ represents oxygen, sulfur, etc.; R₇ represents (un)substituted phenyl, etc.; and R₄ represents hydrogen or lower alkoxy. This compound is excellent in the inhibition of aldose reductase and is useful for treating various complications accompanying diabetes.