The present invention provides a medicament for treating or preventing a disease related with FAAH, specifically depression, anxiety, pain or the like, comprising a compound of the following formula (1) wherein W is hydrogen atom, halogen atom, or the like, A is alkyl group optionally substituted with aryl, etc. and aryl group, one of X and Y is di-substituted alkylaminocarbonyl group, etc. and the other is hydrogen atom, alkyl, etc.本發明提供含有下述式(1)表示之化合物或其藥學上容許之鹽(式中,W為氫原子、鹵原子等,A為可經芳基等取代之烷基、芳基等,X及Y之任一方為二取代之烷基胺基羰基等,另一方為氫原子、烷基等),對於FAAH參予之疾病,具體而言為憂鬱病、焦慮症或疼痛等疾病之治療藥或預防藥。
