Patent ID: 7772285

Claim:
A benzophenone derivative represented by the following general formula: wherein R 1 represents a substituted or unsubstituted heterocyclic group, a substituted phenyl group, or a substituted or unsubstituted alkyl group; Z represents a substituted or unsubstituted alkylene group; R 2 represents a substituted or unsubstituted heterocyclic group, a substituted or unsubstituted heterocyclic carbonyl group or a protected or unprotected carboxyl group; R 3 represents a hydrogen atom, a halogen atom, a cyano group, a nitro group, a protected or unprotected carboxyl group, a protected or unprotected hydroxyl group, a protected or unprotected amino group, a mercapto group, a carbamoyl group or a substituted or unsubstituted alkyl, alkenyl, cycloalkyl, aryl, aralkyl, alkoxy, aryloxy, acyl, alkoxycarbonyl, aryloxycarbonyl, alkylthio, alkylsulfinyl, alkylsulfonyl, alkylamino, acylamino, alkylsulfonylamino, arylsulfonylamino or heterocyclic group; R 4 represents a substituted or unsubstituted alkoxy, cycloalkyloxy, cycloalkenyloxy, alkyl, cycloalkyl, heterocyclic-oxy or heterocyclic group; R 5 represents a hydrogen atom, a halogen atom or a hydroxyl group, provided that, when R 1 represents a substituted or unsubstituted alkyl group, R 4 represents a substituted or unsubstituted cycloalkyloxy group, an alkoxy group substituted with a substituted or unsubstituted phenyl or heterocyclic group or a substituted or unsubstituted heterocyclic-oxy group, or a salt thereof.