Patent ID: 7115609

Claim:
A compound of formula (I) in which X 1 represents N; n is 1 or 2; R 1 represents trifluoromethyl, COOH, CONH 2 , SO 2 NH 2 , phenyl, pyridyl, C-linked imidazolyl (which may bear an N-(1–4C)alkyl substituent) or a (3–6C)cycloalkyl, oxa (4–6C)cycloalkyl, thia(4–6C)cycloalkyl or C-linked aza (4–6C)cycloalkyl group, which C-linked aza(4–6C)cycloalkyl group may bear an N-(1–4C)alkyl substituent; and R 2 is selected from in which X 2 represents a hydrogen atom, a halogen atom or an amino group; X 3 represents a hydrogen atom, a methyl group, a fluorine atom, a chlorine atom or a bromine atom; X 4 represents a hydrogen atom, a methyl, group or a halogen atom; X 5 represents a chlorine atom, a methoxy group or a methyl group; and X 6 represents a hydrogen atom, a halogen atom or a methyl group; or a pharmaceutically acceptable metabolically labile ester thereof, or a pharmaceutically acceptable salt thereof.