| abstract |
The present invention is a piperazine derivative of formula (I)n n n Formula In n n n n n n n (Wherein,n n n R 1 , m, k and R 2 have the same meaning as in claim 1). The piperazine derivative is a potent 5-HT lA agonist, has 5-HT-reuptake inhibitory effect, prevents memory loss due to anxiety, depression, schizophrenia, OCD, delayed dyskinesia, learning disability and old age It is also suitable for treatment, effective for compulsive behavior, and also for prevention or treatment of cerebral infarction, such as stroke and cerebral ischemia. |