Patent ID: 8664255

Claim:
A substituted diketo acid compound with the chemical structure: wherein R 1 is phenyl substituted with one or more of R 3 at C2, R 4 at C3, R 5 at C4, R 6 at C5, or R 7 at C6, wherein R 3 , R 4 , R 5 , R 6 , and R 7 independently are H, Br, F, Cl, I, O(C 1-6 alkyl), (C 1-6 alkyl), dioxopyrrolyl, Ph(CH 2 ) 2 , CF 3 , imidazolyl, or methylsulfonyl, wherein two or more of R 3 , R 4 , R 5 , R 6 or R 7 are independently OCH 3 , Br, F, Cl, I, or CH 3 , or wherein R 1 is a 1- or 2-naphthyl substituted with one or more of R 3 at C3, R 4 at C4, R 5 at C5, wherein R 3 and R 4 are H, and R 5 is OC 1-6 alkoxy; and R 2 is OH or OC 1-6 alkyl; or a pharmacologically acceptable salt thereof.