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. 10, 1984
Filed:
Jan. 17, 1983
John L Belletire, Madison, WI (US);
Reinhard Sarges, Mystic, CT (US);
Pfizer Inc., New York, NY (US);
Abstract
A series of spiro-imide compounds and their base salts with pharmacologically acceptable cations are disclosed. These particular compounds are useful in therapy as agents for the control of certain chronic diabetic complications. Preferred member compounds include 2,3-dihydro-spiro-[1H-indene-1,3'-pyrrolidone]-2',5'-dione, 2,3-dihydro-spiro-[1H-indene-2,3'-pyrrolidine]-2',5'-dione, 3,4-dihydro-spiro-[2H-naphthalene-1,3'-pyrrolidine]-2',5'-dione, 3,4-dihydro-spiro-[2H-naphthalene-1,3'-piperidine]-2',6'-dione, 6-chloro-2,3-dihydro-spiro-[4H-1-benzopyran-4,3'-pyrrolidine]-2',5'-dione and 6,7-dihydro-spiro-[5H-benzo(b)thiophene-4,3'-pyrrolidine]-2',5'-dione. Methods for preparing these compounds from known starting materials are provided.