Patent ID: 8809536

Claim:
A compound of formula I, wherein X is C(R 5 )(R 6 ) or C(R 7 )(R 8 ); z is —[C(R 4 ) 2 ] n ; R 1 is a halogen; R 2 is H; R 3 is H; R 4 is H; R 5 is H; R 6 is phenyl substituted with 1 substituent R 9 ; R 7 is (C 1 -C 6 )alkyl; R 8 is hydroxy(C 1 -C 6 )alkyl, hydroxy(C 1 -C 6 )alkoxy or (C 1 -C 6 )alkoxy-(C 1 -C 6 )alkoxy; R 9 is, independently at each occurrence, hydroxy, (C 1 -C 6 )alkoxy, halogen, hydroxy(C 1 -C 6 )alkyl, or hydroxy(C 1 -C 6 )alkoxy; m is 0 or 1; and n is 1; or a pharmaceutically acceptable salt thereof.