Patent ID: 8791104

Claim:
A compound represented by the following formula: including both R and S enantiomeric forms, racemic mixtures, and pharmaceutically acceptable salts thereof; wherein: R 1 is one of the following: each of which is substituted or unsubstituted; R 2 is selected from the group consisting of H and alkyl; R 3 is selected from the group consisting of H, alkyl, and substituted alkyl; R 4 is selected from the group consisting of halogen, —SO 2 R 4 ″, —SO 2 N(R 4 ′) 2 , —OR 4 ″, —N(R 4 ″) 2 , —CON(R 4 ″) 2 , —NHCOR 4 ″, —NHSO 2 R 4 ″, alkyl, mono-substituted alkyl, di-substituted alkyl, and tri-substituted alkyl; wherein R 4 ′ is independently selected from the group consisting of halogen, alkyl, mono-substituted alkyl, di-substituted alkyl, and tri-substituted alkyl; and R 4 ″ is independently selected from the group consisting of halogen, hydrogen, alkyl, mono-substituted alkyl, di-substituted alkyl, tri-substituted alkyl, aryl, mono-substituted aryl, di-substituted aryl, tri-substituted aryl, cycloaliphatic, mono-substituted cycloaliphatic, di-substituted cycloaliphatic, and tri-substituted cycloaliphatic; and R 5 is selected from the group consisting of H and alkyl.