Patent ID: 8802892

Claim:
A compound of formula (I) or a pharmaceutically acceptable salt thereof: Ar—[O—(X) p —R′] q (I) wherein: Ar is the remainder of a phenolic residue and is selected from: resorcinol, catechol, dihydroxy-naphthyl, tri-hydroxy-naphthyl, tetra-hydroxy-naphthyl, unsubstituted hydroquinone, tri-hydroxy-phenyl, di-hydroxy-benzoic acids, and isoflavones; X is independently at each occurrence selected from: —CH 2 COO—; —CH(CH 3 )COO—; —CH 2 CH 2 OCH 2 COO—; —CH 2 CH 2 CH 2 CH 2 CH 2 COO—; —(CH 2 ) y COO—; and, —(CH 2 CH 2 O) z CH 2 COO—; y is independently selected from 2, 3, 4 and 6-24; z is independently selected from 2-24; R′ is selected from H, benzyl, and C 1-6 alkyl; p is independently selected from 2, 3, and 4; and, q is selected from 2, 3, 4, 5, 6, 7, 8, 9, and 10.