Patent ID: 7250440

Claim:
A compound of the formula: wherein: R 1 is hydrogen, lower alkyl, halogen, CN, or lower alkoxy; R 2 is hydrogen, lower alkyl, or phenyl; or R 1 and R 2 together may form a 5-7 membered ring; and R 3 , and R 4 are each, independently, H, OH, halogen, CN, phenyl, substituted phenyl, lower alkyl or lower alkoxy; where said substituted phenyl is substituted with one or more of nitro, cyano, —N(R 11 )(R 12 ), halo, hydroxy, carboxy, alkyl, alkenyl, alkynyl, cycloalkyl, aryl, heteroaryl, alkoxy, aryloxy, heteroaryloxy, alkylalkoxy, alkoxycarbonyl, alkoxyalkoxy, perfluoroalkyl, perfluoroalkoxy, arylalkyl, alkylaryl, hydroxyalkyl, alkoxyalkyl, alkylthio, —S(O) 2 —N(R 11 )(R 12 ), —C(═O)—N(R 11 )(R 12 ), (R 11 )(R 12 )N-alkyl, (R 11 )(R 12 )N-alkoxyalky, (R 11 )(R 12 )N-alkylaryloxyalkyl, —S(O) s -aryl, or —S(O) s —heteroaryl, where R, 11 and R 12 are each independently hydrogen or alkyl, and s is 0, 1, or 2; or a pharmaceutically acceptable salt thereof; provided that R 1 is lower alkyl or R 2 is H or lower alkyl, or R 1 and R 2 together form a 6-membered ring.