申请人:A. H. Robins Company, Inc.
公开号:US04242261A1
公开(公告)日:1980-12-30
This invention provides an improved process for producing methylene-cycloamines as exemplified by 1-isopropyl-3-diphenylmethyleneacetidine: ##STR1## In accordance with the invention process, the above illustrated methyleneazetidine compound is synthesized by (1) reacting .alpha.,.alpha.-diphenyl-.alpha.-(1-isopropyl-3-azetidinyl) acetamide with bromine and alkali metal alkoxide under modified Hofmann Rearrangement conditions to form a carbamate intermediate, and (2) heating the carbamate intermediate in an acidic medium to yield the 1-isopropyl-3-diphenylmethyleneazetidine product. This illustrated 3-methyleneazetidine compound is characterized by a combination of pharmacological properties which are indicative of utility as a mood elevating therapeutic agent for relieving the symptoms of depression in humans.
本发明提供了一种改进的方法来生产亚甲基环氨基化合物,例如1-异丙基-3-二苯基亚甲基乙炔:##STR1## 根据本发明的方法,上述示例的亚甲基氮杂环化合物通过以下步骤合成:(1)将.alpha.,.alpha.-二苯基-.alpha.-(1-异丙基-3-氮杂环基)乙酰胺与溴和碱金属醇盐在改良的霍夫曼重排反应条件下反应,形成一种氨基甲酸酯中间体,(2)在酸性介质中加热氨基甲酸酯中间体,得到1-异丙基-3-二苯基亚甲基氮杂环产物。这种3-亚甲基氮杂环化合物具有一系列药理特性,表明它作为一种情绪提升的治疗剂对于缓解人类的抑郁症状具有实用性。