Patent ID: 7645779

Claim:
A compound having the formula (Ia): R 1 O 2 C—CR a R b —Y—Ar 1 —X—Ar 2 -Z 1 -Z 2 -Ar 3 Ia or a pharmaceutically acceptable salt or prodrug thereof, wherein X is selected from the group consisting of O, S(O) m , CR′R″ and SO 2 NR″; Y is O or CR′R″; Z 1 is O or CR′R″; Z 2 is CR′R″C(O)NR′″; Ar 1 and Ar 2 are independently phenyl; Ar 3 is aryl; R 1 is selected from the group consisting of hydrogen, (C 1 -C 8 )alkyl and aryl(C 1 -C 4 )alkyl; R a and R b are independently selected from the group consisting of hydrogen, (C 1 -C 4 )alkyl, aryl and aryl(C 1 -C 4 )alkyl; each R′, R″ and R′″ is independently selected from the group consisting of hydrogen, (C 1 -C 4 )alkyl, aryl and aryl(C 1 -C 4 )alkyl; and the subscript m is an integer from 0 to 2.