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.
根据公式1,化合物的结构为:##
STR1## 其中,R.sub.1和R.sub.2独立地表示
氢、被1到4个
碳原子的烷基取代的
氨基甲酰基、2到5个
碳原子的烷基羰基或
苯基羰基,X表示卤素、硝基或
氰基,而R.sub.3表示##
STR2## 其中,R.sub.4表示
氰基或2到5个
碳原子的烷基羰基,R.sub.5表示未取代或被1到8个
碳原子的烷基取代的
氨基甲酰基,或被1到8个
碳原子的羟基烷基取代的
氨基甲酰基,或药学上可接受的
酯和盐,以及其药学上可接受的载体。此外,还包括将该化合物作为CO
MT抑制剂的药物组合物。