A novel thiazolidine-2,4-dione derivative with hypoglycemic and aldose reductase inhibitory activities, represented by the general formula (1) or (2), a salt thereof, a process for producing the same, and a medicine containing the same, wherein R1 and R2 may be the same or different from each other and each represents hydrogen or lower alkyl; R3 represents phenyl naphthyl, benzoyl, 5- or 6- membered heterocycle or a benzene- containing condensed ring thereof, all of which may have at least one substituent; A represents carbonyl, sulfonyl or a free bond; and B represents lower alkylene, lower alkenylene or a free bond, in formula (2) R4 represents hydrogen or lower alkyl, and R1 and R3 are as defined above.
一种具有降血糖和醛糖还原酶抑制活性的新型
噻唑烷-2,4-二酮衍
生物,由通式(1)或(2)表示,其盐,生产该衍
生物的工艺,以及含有该衍
生物的药物,其中R1和R2可以相同或互不相同,各自代表氢或低级烷基;R3 代表苯基
萘基、苯甲酰基、5-或 6-成员杂环或其含苯缩合环,所有这些杂环可具有至少一个取代基;A 代表羰基、磺酰基或自由键;B 代表低级亚烷基、低级亚烯基或自由键,在式(2)中,R4 代表氢或低级烷基,R1 和 R3 如上定义。