Back to results
US 4,226,875 AGranted
Novel spiro-oxazolidinediones
AssigneePfizer Inc.
InventorRodney C. Schnur
Life of this patent
Estimating the term…
Abstract
Novel spiro-oxazolidinediones useful as aldose reductase inhibitors and as therapeutic agents for the treatment of chronic diabetic complications are disclosed. Pharmaceutical compositions containing the novel compounds and a method of treating chronic diabetic complications are also disclosed.
Claims9
A compound of the formula ##STR8## and the pharmaceutically acceptable salts thereof, wherein n is zero or one;
- R and R.sub.2 are each hydrogen;
- and R.sub.1 and R.sub.3 are each selected from the group consisting of hydrogen, chloro, bromo, fluoro and alkyl of 1 to 3 carbon atoms.
Dependencies are inferred from the claim text.