1-PHENYLPYRIDONE DERIVATIVE

摘要

Disclosed is a compound represented by the formula (I) which can be used as an active ingredient: (I) wherein Az represents an azetidinyl group which may have a substituent; L represents a single bond or a C1-C2 alkylene group which may optionally have a substituent; and Ar represents a phenyl group which may optionally have a substituent or a pyridyl group which may optionally have a substituent. The compound is useful as an antagonist for a melanin-concentrating hormone receptor and is therefore useful as a pharmaceutical agent for a central nervous system disease, a cardiovascular disease or a metabolic disease.