Patent ID: 7504428

Claim:
A method of treating anxiety in an individual and furthermore, which comprises administering to said individual a therapeutically effective amount of a compound of formula I: wherein R 1 is H, hydroxy, C 1-6 -alkoxy or NR a R b , wherein R a and R b are each independently H or C 1-6 -alkyl; R 2 is H, hydroxy or F; or R 1 and R 2 are together —O— or —NH— thereby forming a 5-membered heterocyclic ring with the carbon atoms to which they are attached; R 3 is t-butyl, 1,1-dimethylpropyl or aryl; R 4 is H; R 5 is C 1-6 -alkyl or C 1-6 -haloalkyl; and R 6 is H, hydroxy or C 1-6 -alkyl; or an optical isomer or pharmaceutically acceptable salt thereof, with the exception of (RS)-5,7-Di-tert-butyl-3-hydroxy-3-trifluoromethyl-3H-benzofuran-2-one.