Patent ID: 8367710

Claim:
A compound of formula (I), tautomers, and pharmaceutically acceptable salts thereof: wherein: A is carbon; R is selected from hydrogen and alkyl; R 1 , R 2 , R 3 , and R 4 are each independently selected from the group consisting of: hydrogen, alkyl, alkoxy, halogen, aryl, and heteroaryl, wherein the aryl or heteroaryl is each independently either unsubstituted or substituted with one or more groups independently selected from the group consisting of: alkyl, halogen, hydroxyl, tetrazolyl, imidazolyl, dihydroimidazolyl, carboxylic acid, and carboxylic ester; R 5 , R 6 , and R 7 are each independently selected from the group consisting of: hydrogen, alkyl, alkoxy, halogen, hydroxyl, amino, nitro, cyano, carboxylic acid, and carboxylic ester; R 8 , R 9 , R 10 , and R 11 are each independently selected from the group consisting of: hydrogen and alkyl, wherein R 8 , R 9 , R 10 , and R 11 can substitute any open valence of the ring to which they attach; and n is 0, 1, or 2.