申请人:Eisai R&D Management Co., Ltd.
公开号:US08268848B2
公开(公告)日:2012-09-18
A cyclopropane compound represented by the following formula (A) or a pharmaceutically acceptable salt thereof has orexin receptor antagonism, and therefore has a potencial of usefulness for the treatment of sleep disorder for which orexin receptor antagonism is effective, for example, insomnia:
wherein Q represents —CH— or a nitrogen atom, R1a and R1b each independently represent a C1-6 alkyl group and the like, R1c represents a hydrogen atom and the like, R2a, R2b, R2c and R2d each independently represent a hydrogen atom, a halogen atom, a C1-6 alkyl group and the like, R3a, R3b and R3c each independently represent a hydrogen atom, a halogen atom and the like, and R3d represents a hydrogen atom and the like.
下列化学式(A)所代表的环丙烷化合物或其药学上可接受的盐具有促进睡眠受体拮抗作用,因此在治疗对促进睡眠受体拮抗有效的睡眠障碍,例如失眠方面具有潜在的用处:其中Q代表—CH—或氮原子,R1a和R1b各自独立代表C1-6烷基等,R1c代表氢原子等,R2a,R2b,R2c和R2d各自独立代表氢原子、卤素原子、C1-6烷基等,R3a,R3b和R3c各自独立代表氢原子、卤素原子等,R3d代表氢原子等。