Patent ID: 8138218

Claim:
A compound of the formula (I) wherein X is Y is H or NR 12 R 13 ; Z is —C(O)— or —SO 2 —; n is, independently for each occurrence. 1, 2, 3, 4, 5, 6, 7, or 8; R 1 and R 3 each is, independently, H or (C 1 -C 4 )alkyl; R 2 and R 4 each is, independently, R 5 is H, (C 1 -C 6 )alkyl, (C 2 -C 6 )alkenyl, (C 2 -C 6 )alkynyl, substituted (C 1 -C 6 )alkyl, substituted (C 2 -C 6 )alkenyl, substituted (C 2 -C 6 )alkynyl, aryl, alkylaryl, alkylarylalkyl or arylalkylaryl; R 8 and R 9 each is, independently, (C 1 -C 6 )alkyl or substituted (C 1 -C 6 )alkyl; R 6 , R 7 , R 10 , R 11 , R 12 and R 13 each is, independently, H, (C 1 -C 6 )alkyl or substituted (C 1 -C 6 )alkyl; and Q is H or (C 1 -C 4 )alkyl; provided that: at least one of R 2 and R 4 is in said compound; or a pharmaceutically acceptable salt thereof.