The present invention relates to compounds of formula
wherein R
1
, R
2
, R
3
, and R
4
are as defined herein and
hetaryl is a one or two ring-membered heteroaromatic ring system, connected to the carbon atoms of the piperidine group selected from the group consisting of
or to pharmaceutically suitable acid addition salts, optically pure enantiomers, racemates or diastereomeric mixtures thereof. These compounds are orexin receptor antagonists and may be useful in the treatment of disorders in which orexin pathways are involved, like sleep disorders.
本发明涉及以下式中的化合物,其中R1、R2、R3和R4如本文所定义,而hetaryl是一个或两个环成员的杂芳环系统,连接到从以下群中选择的
哌啶基的碳原子,或者是药用适宜的酸盐、光学纯对映体、拉克酸盐或二对映异构体混合物。这些化合物是促进睡眠受体拮抗剂,可能在涉及促进睡眠途径的疾病治疗中有用,如睡眠障碍。