Patent ID: 7049331

Claim:
A compound of the formula (II) wherein R 1 is substituted aryt; wherein the substituted aryl is substituted with one or more substituents independently selected from halogen, hydroxy, alkyl, alkoxy; halogenated alkyl, halogenated alkoxy, amino, alkylamino or di(alkyl)amino; R 2 is substituted aryl; wherein the substituted aryl is substituted with one or more substituents independently selected from halogen, hydroxy, alkyl, alkoxy, trihalomethyl, trihalomethoxy, amino, alkylamino or di(alkyl)amino; R 4 is aryl; wherein the aryl is optionally substituted with one or more substituents independently selected from halogen, hydroxy, alkyl, alkoxy; halogenated alkyl, halogenated alkoxy, amino, alkylamino or di(alkyl)amino; and pharmaceutically acceptable salts thereof.