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。