Patent ID: 7396840

Claim:
A compound of the formula and the pharmaceutically acceptable salts thereof wherein: each n is independently 0-2; each R is independently H or alkyl (1-6C); Ar is phenylene; each Y is independently optionally substituted pyrimidyl, imidazole, pyridyl, benzimidazole, or benzooxazole; and L 2 is a covalent bond or a C1-6 alkylene, wherein said optional substituents are independently halogen, nitro, cyano, carboxylic acid, alkyl, alkenyl, cycloalkyl, hydroxyl, thiol, or amino, acyl; wherein the hydroxyl and thiol groups may be substituted by C 1-10 alkyl or by C 2-4 alkanoyl; and wherein an amino group may also be substituted once or twice with C 1-10 alkyl, alkenyl or C 2-4 alkanoyl.