Patent ID: 6916833

Claim:
A compound represented by formula (I): wherein n is an integer independently selected from 1 or 2; X is halogen; R 1 is selected from the group consisting of hydrogen, carbonyl, sulfonyl, lower alkyl, and lower alkyl substituted by carbonyl, sulfonyl, or hydroxy; R 2 -R 6 are independently selected from the group consisting of hydrogen, halogen, lower alkyl, —C(CH 3 ) 3 , CF 3 , —OCH 3 , —NO 2 , and —CN; and R 7 -R 11 are independently selected from the group consisting of hydrogen, halogen, —CN, —NO 2 , CF 3 , —OCH 3 , —COOCH 3 , and —C 6 H 5 ; or a pharmaceutically acceptable salt thereof.