A chromone derivative represented by general formula (1), an intermediate for the synthesis thereof, and an aldose reductase inhibitor containing the same as the active ingredient, wherein R₁ and R₂ may be the same or different from each other and each represents hydrogen or lower alkyl. The derivative is readily capable of total synthesis and has such an excellent aldose reductase inhibitory effect that it is useful as an aldose reductase inhibitor.
一种由通式(1)代表的
铬酮衍
生物、一种用于合成该衍
生物的中间体,以及一种以其为有效成分的醛糖还原酶
抑制剂,其中 R₁ 和 R₂ 可以相同或不同,各自代表氢或低级烷基。该衍
生物易于全合成,具有极佳的醛糖还原酶抑制效果,因此可用作醛糖还原酶
抑制剂。