4-Alkylsubstituted-3-hydroxy-2-pyrroline-2,5-dione compounds for use in the prevention and treatment of kidney and bladder stones, process for preparing them and pharmaceutical composition containing them

摘要

Novel 4-alkylsubstituted-3-hydroxy-3-pyrroline-2,5-diones are disclosed which inhibit glycolic acid oxidase and thus are useful in the treatment and prevention of calcium oxalate kidney stone formation. A novel process for their preparation is also disclosed.