The present invention provides a heterocyclic compound having an orexin type 2 receptor agonist activity. A compound represented by the formula (I) : wherein each symbol is as described in the specification, or a salt thereof, is useful as an agent for the prophylaxis treatment of narcolepsy.
本发明提供了一种具有促进睡觉素2型受体激动剂活性的
杂环化合物。公式(I)所代表的化合物:其中每个符号如规范中所述,或其盐,可用作预防治疗嗜睡症的药剂。