Patent ID: 6451821
Filing Date: 2002-09-17
Classification: A61K,C07D

Abstract:
A compound of the formula (I): wherein R1 is hydrogen or C1-6alkyl; and R2 is -alk-NH2, â€”CH2â€”R3, â€”CH2â€”Sâ€”R4 or phenyl substituted with nitro or â€”NHâ€”C(&boxH;NH)CH3; and wherein R3 is C3-6 cycloalkyl, pyridyl, pyrazinyl, or phenyl or phenyl substituted with nitro, hydroxy or carboxyl; R4 is pyridyl; alk is C1-6alkylene; and or a racemic mixture, an enantiomer, a diastereoisomer or a mixture thereof, or a tautomer thereof, or a pharmaceutically acceptable salt thereof.