Patent ID: 8093281

Claim:
A compound of formula (I): wherein A 1 represents 5-fluoro-2-methoxy-phenyl or 5-fluoro-2-hydroxy-phenyl; X represents —C(R 3 )—; when X represents —C(R 3 )—, R 2 represents hydrogen and R 1 represents fluorine, R 3 represents hydrogen or fluorine, when X represents —C(R 3 )— and R 2 and R 1 each represent hydrogen, R 3 represents hydrogen, hydroxy, methoxy or fluorine, when X represents —C(R 3 )— and R 2 represents hydroxy, methoxy, —CO 2 CH 3 or —CO 2 CH 2 CH 3 , R 1 and R 3 each represent hydrogen; and Y represents H or methyl; or salts thereof.