| abstract |
The present invention relates to thiazolidin-4-one and [1,3]-thiazidin-4-one compound of formula (I), wherein X, Y, R3 and R4 are as described in the description, or a pharmaceutically acceptable salt thereof , which is used for the prevention or treatment of diseases related to the orexin system. The present invention also relates to novel thiazolidin-4-one compounds of formula (II) and their use as medicaments, pharmaceutical compositions comprising one or more compounds of formula (II), in particular as orexin receptor antagonists use of the agent. |