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:
Apr. 03, 1979
Filed:
Aug. 11, 1978
Applicant:
Inventors:
Paul R Kelbaugh, Niantic, CT (US);
Reinhard Sarges, Mystic, CT (US);
Assignee:
Pfizer Inc., New York, NY (US);
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
A61K / ; C07D / ;
U.S. Cl.
CPC ...
4242 / ; 548309 ;
Abstract
Novel spiro-furanohydantoin derivatives useful as aldose reductase inhibitors and as therapeutic agents for the treatment of chronic diabetic complications are disclosed. The compounds include 2-methyl-spiro-[cyclohexa(b)furan-4,4'-imidazolidine]-2',5'-dione, 2-fluoro-spiro-[cyclohexa(b)furan-4,4'-imidazolidine]-2',5'-dione, 2-chloro-spiro-[cyclohexa(b)furan-4,4'-imidazolidine]-2',5'-dione, 2-bromo-spiro-[cyclohexa(b)furan-4,4'-imidazolidine]-2',5'-dione and spiro-[cyclohexa(b)furan-4,4'-imidazolidine]-2',5'-dione.