The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 13, 1988
Filed:
Apr. 13, 1987
Takeda Chemical Industries, Ltd., Osaka, JP;
Senju Pharmaceutical Co., Ltd., Osaka, JP;
Abstract
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.