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.
New use of catechol-o-methyl transferase (comt) inhibitors and their physiologically acceptable salts and esters
申请人:ORION-YHTYMÄ OY
公开号:EP0323162A2
公开(公告)日:1989-07-05
Catechol derivatives which have been previously suggested for the treatment of Parkinsonism are useful in the treatment and prophylaxis of ulcers and lesions.in the gastrointestinal tract.
以前曾建议用于治疗帕金森氏症的儿茶酚衍生物可用于治疗和预防胃肠道溃疡和病变。
Kehrmann; Prunier, Helvetica Chimica Acta, 1924, vol. 7, p. 987