申请人:Takeda Chemical Industries, Ltd.
公开号:US04771050A1
公开(公告)日:1988-09-13
Compounds of the general formula: ##STR1## wherein, R.sup.1 and R.sup.2 are, the same or different, hydrogen, a halogen, a lower alkyl, a cycloalkyl, a lower alkoxy, trifluoromethyl or a phenylalkyloxy whose phenyl ring may be substituted by one to three substituents selected from the group consisting of a halogen, a lower alkyl, a lower alkoxy, methylenedioxy and trifluoromethyl; R.sup.3 is hydrogen or methyl; R.sup.4 is carboxyl or an esterified carboxyl; and X is oxygen or sulfur, or a salt thereof. These compounds possess aldose reductase inhibitory and platelet aggregation inhibitory activities, and are of use as drugs for prevention and treatment of diabetic complications such as diabetic cataract, retinophathy, nephropathy, and neuropathy.
通式化合物:##
STR1## 其中,R1和R2相同或不同,为
氢、卤素、低级烷基、
环烷基、低级烷
氧基、三
氟甲基或
苯基烷
氧基,其
苯环可被一至三个选自卤素、低级烷基、低级烷
氧基、亚甲二
氧基和三
氟甲基的取代基所取代;R3为
氢或
甲基;R4为羧基或
酯化的羧基;X为
氧或
硫,或其盐。这些化合物具有醛糖还原酶抑制和血小板聚集抑制活性,可作为药物用于预防和治疗糖尿病并发症,如糖尿病性白内障、视网膜病变、肾病变和神经病变。