An amide derivative represented by the following formula (I) ** Formula ** where A is a 6-membered phenylene or heteroarylene represented by the following formula ** Formula ** where Z4, Z5, Z6 and Z7 each is a carbon atom or a nitrogen atom, these phenylene and heteroarylene are optionally substituted with one or the same or different 2 or 3 substituents selected from a halogen atom； a hydroxyl group； nitro； cyano； mercapto； C1-C6 alkyl optionally substituted with amino optionally mono- or di-substituted with C1-C6 alkyl, a halogen atom, a hydroxyl group or C1-C6 alkoxy； C2-C6 alkenyl； C2-C6 alkynyl； C3-C6 cycloalkyl optionally substituted with a halogen atom, a hydroxyl or amino group； C6-C10 aryl optionally substituted with substituent B shown below； heteroaryl containing 1-6 atoms selected from a nitrogen atom, an oxygen atom and a sulfur atom and having 5-10 atoms that constitute the ring, which is optionally substituted with a substituent B shown below； C1-C6 alkoxy optionally substituted with amino optionally mono- or di-substituted with C1-C6 alkyl, a halogen atom, a hydroxyl group or C1-C6 alkoxy； C2-C7 acyloxy； C1-C6 alkylthio wherein the alkyl moiety is optionally substituted by a halogen atom or a hydroxyl group； C1-C6 alkylsulfinyl wherein the alkyl moiety is optionally substituted by a halogen atom or a hydroxyl group； C3-C6 cycloalkylthio； C3-C6 cycloalkylsulfinyl； C3-C6 cycloalkylsulfonyl； amino optionally mono- or di-substituted with C1-C6 alkyl or C3-C6 cycloalkyl； C2-C7 acylamino wherein the amino moiety is optionally substituted by C1-C6 alkyl； aminocarbonyl wherein the amino moiety is optionally mono- or di-substituted with C1-C6 alkyl or C3-C6 cycloalkyl； C1-C6 alkylsulfonylamino wherein the amino moiety is optionally substituted by C1-C6 alkyl； C3-C6 cycloalkylsulfonylamino wherein the amino moiety is optionally substituted by C1-C6 alkyl； a non-aromatic heterocyclic group containing 1-4 atoms selected from a nitrogen atom, an oxygen atom and
