Patent ID: 7229994

Claim:
A method for the treatment of anxiety, comprising administering to a subject suffering from anxiety an effective amount of a compound of the formula I wherein R 1 is selected from any one of wherein each R 1 phenyl and R 1 heteroaromatic ring may optionally and independently be further substituted by 1, 2 or 3 substituents selected from CF 3 , methyl, iodo, bromo, fluoro and chloro; R 2 is independently selected from ethyl and isopropyl; R 3 is independently selected from hydrogen and fluoro; R 4 is independently selected from —NH 2 and —NHSO 2 R 5 ; and R 5 is independently selected from hydrogen, —CF 3 and C 1 –C 6 alkyl, or salts thereof or separate enantiomers and salts thereof.