Patent ID: 7994338

Claim:
A compound of Formula Ia or Ib: wherein: R 1 and R 2 independently are selected from the group consisting of hydrogen, substituted alkyl, alkoxy, substituted alkoxy, alkenyl, substituted alkenyl, alkynyl, substituted alkynyl, amino, substituted amino, aminosulfonyl, aminosulfonyloxy, aminosulfonylamino, amidino, carboxyl, carboxyl ester, cyano, halo, hydroxyl, acyl, nitro, mercapto, alkylthio, substituted alkylthio, substituted sulfonyl, substituted sulfonyloxy, substituted sulfinyl, and aminocarbonyl, wherein at least one of R 1 and R 2 is selected from the group consisting of nitro, trifluoromethyl, halo, and cyano; R 3 is substituted alky; R 4 and R 5 independently are selected from the group consisting of hydrogen, alkyl, substituted alkyl, alkoxy, substituted alkoxy, alkenyl, substituted alkenyl, alkynyl, substituted alkynyl, amino, substituted amino, aminosulfonyl, aminosulfonyloxy, aminosulfonylamino, amidino, carboxyl, carboxyl ester, cyano, halo, hydroxyl, acyl, nitro, mercapto, alkylthio, substituted alkylthio, substituted sulfonyl, substituted sulfonyloxy, substituted sulfinyl, and aminocarbonyl, wherein at least one of R 4 and R 5 is alkoxy; and R 6 is selected from the group consisting of hydrogen, alkyl, and substituted alkyl; or a tautomer and/or a pharmaceutically acceptable salt thereof.