| abstract |
A compound of formula (I) wherein X 1 represents a hydrogen atom, or a CH 2 OH group X 2 represents a hydrogen atom, a fluorine atom, an OCH 3 group or a CH 2 OH group, and at least one of X 1 and X 2 is hydrogen Y represents a carbon atom and Z represents a nitrogen atom or Y represents a nitrogen atom and Z represents a carbon atom; R 1 represents a halogen atom, a C 1-4 alkyl group, a trifluoromethyl group or a trifluoromethoxy group, and R 2 are R 3 each independently selected from a hydrogen atom, a halogen atom, a C 1-4 alkyl group, a trifluoromethyl group or a trifluoromethoxy group; or a pharmaceutically acceptable salt or solvate thereof. |