Patent ID: 8486982

Claim:
A compound of the formula: or a pharmaceutically acceptable salt thereof wherein: Z is substituted aryl, substituted or unsubstituted cycloalkyl, substituted or unsubstituted alkenyl, or substituted or unsubstituted arylalkyl; R 1 is hydrogen, substituted or unsubstituted alkyl, substituted or unsubstituted cycloalkyl, or substituted or unsubstituted aryl; R 2 , R 3 , R 4 , R 5 and R 6 are independently hydrogen, substituted or unsubstituted alkyl, substituted or unsubstituted alkenyl, substituted or unsubstituted alkynyl; substituted or unsubstituted cycloalkyl, substituted or unsubstituted aryl, alkoxy, aryloxy, halogen, CF 3 , OCF 3 , OCHF 2 , CN, COOH, COOR 7 , SO 2 R 7 , NO 2 , NH 2 , or N(R 7 ) 2 ; each occurrence of R 7 is independently hydrogen, substituted or unsubstituted alkyl, substituted or unsubstituted alkenyl, substituted or unsubstituted alkynyl; substituted or unsubstituted cycloalkyl, substituted or unsubstituted aryl, alkoxy, aryloxy, halogen, or CF 3 ; n is an integer from 1 to 7.