A compound represented by the formula (I) is contained as an active ingredient:
wherein R
1
and R
2
independently represent a hydrogen atom, a lower alkyl group or the like, or R
1
together with a nitrogen atom to which L, Z
2
and R
1
are attached may form an aliphatic nitrogenated heterocyclic group and R
1
and R
2
together with a nitrogen atom to which they are attached may form an aliphatic nitrogenated heterocyclic group; X represents a methine group or a nitrogen atom; Y represents —CH
2
—O—, —CH═CH— or the like; Z
1
represents a single bond, a C
1-4
alkylene group or the like; Z
2
represents a single bond or a C
1-4
alkylene group; L represents a methylene group, a C
3-8
cycloalkylene group or the like; and Ar represents an aromatic carbocyclic group or the like. The compound is useful as a pharmaceutical for a central nerves system disease, a cardiovascular disease or a metabolic disease.