Patent ID: 8691993

Claim:
A compound of formula (I): wherein: X is —SO 2 — or —C(O)—; R 1 is halogen; R 2 is phenyl, unsubstituted or mono- or bi-substituted independently with lower alkyl, halogen, alkoxy, —SO 2 -lower alkyl or haloalkyl, unsubstituted heteroaryl, lower alkyl, unsubstituted or substituted with unsubstituted phenyl or phenyl substituted with halogen, NO 2 or NH 2 , unsubstituted cycloalkyl, unsubstituted heterocycloalkyl, or NH-phenyl, said phenyl being unsubstituted or substituted with halogen, lower alkyl, haloalkyl, —SO 2 -lower alkyl or alkoxy; and R 3 is lower alkyl or hydrogen, or a pharmaceutically acceptable salt thereof.