Novel 4-(substituted thiazolyl)-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 renal lithiasis.
4-(Substituted thiazolyl)-3-hydroxy-3-pyrroline-2,5-dione compounds, processes for preparing and a pharmaceutical composition comprising the same
申请人:Merck & Co., Inc.
公开号:EP0025232A1
公开(公告)日:1981-03-18
Novel 4-(substituted thiazolyl) -3-hydroxy-3-pyrroline -2,5-diones and processes for preparing them are disclosed. The novel compounds have the structure
wherein
n is 0 to 2;
m is 0 to 3;
R1, R2 and R3 are independently hydrogen, halogen, loweralkyl having 1 to 6 carbons, trifluoromethyl, and loweralkoxy having 1 to 6 carbons or pharmaceutically acceptable salts thereof, with the proviso that the substituents on the thiazolyl ring are not adjacent. They inhibit glycolic acid oxidase and thus are useful in the treatment and prevention of calcium oxalate renal lithiasis.