This invention relates to compounds of formula (I), a process for their preparation, pharmaceutical compositions containing them and their use in the treatment of conditions having an association with the orexin sub-type 1 receptor. Ar, R1, R2, R3, R4, R5 have meanings given in the description.
                            本发明涉及式(I)化合物、其制备方法、含有它们的药物组合物及其在治疗与
奥曲肽亚型 1 受体有关的疾病中的用途。Ar、R1、R2、R3、R4、R5 具有描述中给出的含义。