Patent ID: 8389559

Claim:
A compound having the formula: wherein R 1 is a member selected from H, C 1 -C 3 substituted or unsubstituted alkyl and C 1 -C 3 substituted or unsubstituted heteroalkyl; R 2 and R 2a are independently members selected from H, C 1 -C 3 substituted or unsubstituted alkyl, C 1 -C 3 substituted or unsubstituted heteroalkyl, and OR 3 wherein R 3 is a member selected from H, C 1 -C 3 substituted or unsubstituted alkyl and C 1 -C 3 substituted or unsubstituted heteroalkyl; Ar a member selected from substituted or unsubstituted naphthyl and substituted or unsubstituted phenyl; and X is a member selected from: —CH 2 —; —CH 2 CH 2 —; and —CH 2 ZCH 2 — wherein Z is a member selected from: and O wherein R 4 and R 5 are members independently selected from H, C 1 -C 3 substituted or unsubstituted alkyl, C 1 -C 3 substituted or unsubstituted heteroalkyl, and OR 6 wherein R 6 is a member selected from H, C 1 -C 3 substituted or unsubstituted alkyl and C 1 -C 3 substituted or unsubstituted heteroalkyl.