An optically active carboxamide derivative represented by general formula (I) or a pharmacologically acceptable salt thereof, wherein R¹ represents hydrogen or halogen; R² represents halogen; R³ represents pyrrolidino or piperidino; Y represents methylene or carbonyl; and n represents 1 or 2. The compound has an excellent analgesic effect, thus being useful as an analgesic.
一种由通式(I)代表的光学活性羧酰胺衍
生物或其药理上可接受的盐,其中 R¹ 代表氢或卤素;R² 代表卤素;R³ 代表
吡咯烷或
哌啶;Y 代表亚甲基或羰基;n 代表 1 或 2。该化合物具有极佳的镇痛效果,因此可用作镇痛剂。