Patent ID: 7638553

Claim:
The compounds of formula I: wherein: (a) R 1 is alkyl, which is optionally substituted one or more times by halogen; and (b) R 2 is selected from the group consisting of: (1) —SF 5 ; (2) —O-alkyl; wherein the alkyl group is optionally substituted one or more times by halogen; (3) —S(O) 2 —CF 3 ; (4) —S(O)-alkyl; (5) —S-alkyl; wherein the alkyl group is substituted one or more times by halogen; (6) —S(O) 2 -aryl; (7) —S(O)-aryl; (8) —S-aryl; (9) —S(O) 2 -benzyl; (10) —S(O)-benzyl; and (11) —S-benzyl; and the pharmaceutically acceptable salts and the (R)- and (S)-enantiomers thereof.