Patent ID: 8486370

Claim:
A compound having a formula selected from: wherein the subscripts n, m and q are each independently selected integers of from 0 to 2; R 1 is selected from the group consisting of hydrogen, halogen, C 1 -C 4 alkyl, C 1 -C 4 alkoxy, and C 1 -C 4 haloalkyl; R 2 is selected from the group consisting of hydrogen, halogen, C 1 -C 4 alkyl and C 1 -C 4 alkoxy; R 3 is selected from the group consisting of hydrogen, C 1 -C 4 alkyl and C 3 -C 8 cycloalkyl; R 4 is H or CH 3 ; X is S, O or NH; Y is a peptide having r independently selected amino acids, wherein at least one amino acid is selected from the group consisting of an unnatural amino acid and a D-amino acid; and r is an integer of from 3 to 20.