申请人:Schering Aktiengesellschaft
公开号:US04012495A1
公开(公告)日:1977-03-15
4-(Polyalkoxyphenyl)-2-pyrrolidones of the formula ##STR1## wherein R.sub.1 and R.sub.2 each are hydrocarbon of up to 18 carbon atoms or alkyl of 1-5 carbon atoms substituted by halogen, OH, COOH, alkoxy, alkoxycarbonyl, carboxamido or amino or collectively are alkylene of 1-3 carbon atoms, R.sub.3 is H or OCH.sub.3, R.sub.4 is H, alkyl, aryl or acyl and X is O or S possess neuropsychotropic activity. The compounds wherein X is O are produced by saponifying and decarboxylating a corresponding 2-pyrrolidone-3-carboxylic acid alkyl ester or cyclizing a corresponding 3-phenyl-4-aminobutyric acid or alkyl ester thereof. The pyrrolidones are converted to corresponding thiopyrrolidones in a conventional manner, e.g., by reaction with phosphorous pentasulfide in the presence of base.
该文献描述了公式为##STR1##的4-(聚烷氧基苯基)-2-吡咯烷酮,其中R.sub.1和R.sub.2分别是碳原子数高达18个的碳氢化合物或被卤素、羟基、羧基、烷氧基、烷氧羰基、羧酰胺基或氨基取代的1-5个碳原子的烷基,或者是1-3个碳原子的亚烷基,R.sub.3为H或OCH.sub.3,R.sub.4为H、烷基、芳基或酰基,X为O或S,具有神经精神活性。其中X为O的化合物是通过皂化和脱羧化相应的2-吡咯烷酮-3-羧酸烷基酯或者环化相应的3-苯基-4-氨基丁酸或烷基酯制备的。可以采用常规方法将吡咯烷酮转化为相应的硫代吡咯烷酮,例如,在碱的存在下与五硫化二磷反应。