Patent ID: 8080552

Claim:
A compound according to formula I, wherein R 1 is selected from the group consisting of: hydrogen, halogen, —CF 3 , —OCF 3 , alkyl, alkoxy, —Si(CH 3 ) 3 , —C 1 -C 4 -alkylene-CN, —CN, and —OCHF 2 ; R 2 is selected from the group consisting of: hydrogen, halogen, —CF 3 , —OCF 3 , alkyl, alkoxy, and —CN; or alternatively R 1 and R 2 are adjacent and together with the carbon atom to which they are attached form a 5- or 6-membered heterocyclic ring, which is unsubstituted or substituted one to three times with halogen or alkyl; X is selected from the group consisting of: hydrogen, fluorine, and chlorine; A is C 1 -C 6 -alkylene, which is unsubstituted or substituted once or twice by hydroxy; or a pharmaceutically acceptable salt thereof.