The present invention provides compounds of formula I, having affinity and selectivity for the dopamine D3 receptors, their manufacture, pharmaceutical compositions containing them and their use for the therapeutic and/or prophylactic treatment of cognitive disorders.
                            本发明提供了公式I的化合物,具有亲和力和选择性作用于
多巴胺D3受体,它们的制造方法,含有它们的药物组合物以及它们用于治疗和/或预防认知障碍的用途。