Patent ID: 7449466

Claim:
A compound of the formula: wherein R 1 and R 2 stand for, independently from each other, hydrogen or lower alkyl, R 3 and R 4 stand for, independently from each other, hydrogen, halogen, cyano or lower alkyl, A stands for nitrogen or CH, B stands for CH 2, SO 2, CO, CH═CH or phenylene (which may be further substituted with 1-3 substituents selected from the group consisting of halogen, lower alkyl, hydroxy, lower alkoxy, amino, cyano, nitro, halogeno-lower alkyl, cyano-lower alkyl, lower alkylamino, di(lower alkyl)amino, lower alkylcarbonyl, lower alkylcarbonylamino, sulfamoylamino, and amino lower alkylcarbonyl), and R 5 stands for hydrogen, straight chain or branched chain C 1 -C 10 alkyl, phenyl-lower alkyl (in which the phenyl moiety may be further substituted with 1-3 substituents selected from the group consisting of halogen, lower alkyl, hydroxy, lower alkoxy, amino, cyano, nitro, halogeno-lower alkyl, cyano-lower alkyl, lower alkylamino, di(lower alkyl)amino, lower alkylcarbonyl, lower alkylcarbonylamino, sulfamoylamino, and amino lower alkylcarbonyl), benzoyl-lower alkyl (in which the phenyl moiety in the benzoyl may be further substituted with 1-3 substituents selected from the group consisting of halogen, lower alkyl, hydroxy, lower alkoxy, amino, cyano, nitro, halogeno-lower alkyl, cyano-lower alkyl, lower alkylamino, di(lower alkyl)amino, lower alkylcarbonyl, lower alkylcarbonylamino, sulfamoylamino, and amino lower alkylcarbonyl), cycloalkyl-lower alkyl, piperidinyl-lower alkyl, phenyl (which may be further substituted with 1-3 substituents selected from the group consisting of halogen, lower alkyl, hydroxy, lower alkoxy, amino, cyano, nitro, halogeno-lower alkyl, cyano-lower alkyl, lower alkylamino, di(lower alkyl)amino, lower alkylcarbonyl, lower alkylcarbonylamino, sulfamoylamino, and amino lower alkylcarbonyl), benzoyl (in which the phenyl moiety in the benzoyl may be further substituted with 1-3 substituents selected from the group consisting of halogen, lower alkyl, hydroxy, lower alkoxy, amino, cyano, nitro, halogeno-lower alkyl, cyano-lower alkyl, lower alkylamino, di(lower alkyl)amino, lower alkylcarbonyl, lower alkylcarbonylamino, sulfamoylamino, and amino lower alkylcarbonyl) or amino (in which the amino may be further substituted with lower alkyl or may form cyclic amino group) where all occurrences of “lower” above signify 1-6 carbon atoms, or a pharmaceutically acceptable salt thereof.