Patent ID: 8067614

Claim:
A compound of formula I wherein, R1 and R4 are independently H, F, Cl, Br, C 1 -C 4 -alkyl or C 1 -C 4 -alkoxy, wherein the C 1 -C 4 -alkyl and C 1 -C 4 -alkoxy are independently optionally substituted by 1, 2, 3, 4, 5, 6, 7, 8 or 9 fluorine atoms; R2 and R3 are independently H, F, OH, C 1 -C 3 -alkyl or C 1 -C 3 -alkoxy, wherein the C 1 -C 3 -alkyl and C 1 -C 3 -alkoxy are independently optionally substituted by 1, 2, 3, 4, 5, 6 or 7 fluorine atoms; R5 is C 2 -C 4 -alkenyl or C 3 -C 5 -cycloalkyl, wherein the C 2 -C 4 -alkenyl and C 3 -C 5 -cycloalkyl are independently optionally substituted by 1, 2, 3, 4, 5, 6, 7, 8 or 9 fluorine atoms; and R6 and R7 are independently F, Cl, Br, C 1 -C 4 -alkyl or C 1 -C 3 -alkoxy, wherein the C 1 -C 4 -alkyl and C 1 -C 3 -alkoxy are independently optionally substituted by 1, 2, 3, 4, 5, 6, 7, 8 or 9 fluorine atoms, or a pharmaceutically acceptable salt or trifluoroacetic acid salt thereof.