Compounds of the formula (I), the use thereof for the preparation of a medicament for the treatment of diseases associated with the serotonin receptor and/or serotonin reuptake, in particular for the preparation of a medicament as anxiolytic, antidepressant, neuroleptic and/or antihypertonic and/or for positively influencing obsessive-compulsive disorder (OCD), sleeping disorders, tardive dyskinesia, learning disorders, age-dependent memory disorders, eating disorders, such as bulimia, and/or sexual dysfunctions. The compounds bind to the 5-HT1A receptor.