Patent ID: 7517897

Claim:
A compound of the following formula (I): wherein: R 1 is: OH; R 2 is: (A) aryl selected from the group consisting of pyridyl and pyrimidyl, wherein one or more hydrogen atoms of said aryl group are independently substituted with moieties selected from the group consisting of: (i) cyano, (ii) halogen and (iii) groups of the formula —NR 13 R 14 , wherein R 13 and R 14 are each, independently, hydrogen or straight or branched alkyl of 1 to 3 carbon atoms; (B) trifluoromethoxy or, (C) cyano; R 3 is straight or branched alkyl of 1 to 3 carbon atoms; R 4a is halogen or alkyl of 1 to 2 carbon atoms substituted by one or more halogen atoms; R 4b is halogen or alkyl of 1 to 2 carbon atoms substituted by one or more halogen atoms; X is —CH═ or —N═; and Y is an oxygen or sulfur atom; or a pharmaceutically acceptable salt thereof.