A compound according to formula 1 ##STR1## wherein R.sub.1 and R.sub.2 independently represent hydrogen, carbamoyl which is substituted by an alkyl of 1 to 4 carbon atoms, alkylcarbonyl of 2 to 5 carbon atoms or phenyl carbonyl, X represents halogen nitro or cyano and R.sub.3 represents ##STR2## wherein R.sub.4 represents cyano or alkylcarbonyl of 2 to 5 carbon atoms and R.sub.5 represents carbamoyl which is unsubstituted or substituted with alkyl of 1 to 8 carbon atoms or which is substituted with hydroxyalkyl of 1 to 8 carbon atoms or pharmaceutically acceptable esters and salts thereof, and a pharmaceutically acceptable carrier therefor, as well as pharmaceutical compositions containing said compounds as COMT inhibitors.
Method of treating Parkinson's Disease using pentanedione derivatives
申请人:Orion-yhtyma Oy
公开号:US05112861A1
公开(公告)日:1992-05-12
The invention concerns a method for the treatment of Parkinson's Disease. The method comprises administering a catechol-O-methyl-transferase inhibiting amount of a compound having the formula I ##STR1## wherein R.sub.1 and R.sub.2 independently represent hydrogen, alkylcarbamoyl of 2 to 5 carbon atoms or alkylcarbonyl of 2 to 5 carbon atoms, X represents nitro or cyano and R.sub.3 represents ##STR2## wherein R.sub.4 represents cyano or alkylcarbonyl of 2 to 5 carbon atoms and R.sub.5 represents cyano; alkylcarbonyl of 2 to 5 carbon atoms; or carbamoyl which is unsubstituted or substituted with alkyl of 1 to 8 carbon atoms, or hydroxyalkyl of 1 to 8 carbon atoms or pharmaceutically acceptable salts or esters thereof; and a sufficient amount of levodopa to treat Parkinson's Disease. A peripheral decarboxylase inhibitor such as carbidopa or benzerazide is also preferably administered.
Catechol derivatives, their physiologically acceptable salts, esters and their use in the treatment of tissue damage induced by lipid peroxidation
申请人:ORION-YHTYMÄ OY
公开号:EP0444899A2
公开(公告)日:1991-09-04
Known and new catechol derivatives may be used as medicinal antioxidants in the prevention or treatment of tissue damage induced by lipid peroxidation. The conditions and diseases which may be treated are for example heart diseases, rheumatoid arthritis, cancer, inflammatory diseases, a rejection reaction in organ transplants, ischemia, cancer and aging.