Patent ID: 7468462

Claim:
Compounds having the structural formula C 1 : wherein: R 1 is selected from a group consisting of the structural formulae B 1 , B 2 , and B 3 , R 3 is selected from a group consisting of hydrogen, alkyl, adamantyl, alkyloxy, alkylthio, halogen, aryl, aryloxy, arylthio, and heteroaryl; R 4 is selected from a group consisting of hydrogen, hydroxy, alkyl, alkyloxy, alkylthio, aryl, aryloxy, arylthio and heteroaryl; at least one of R 3 and R 4 is not hydrogen or halogen; R 5 is —OH; R 6 and R 7 are independently selected from the group consisting of alkyl, alkyloxy, —NH 2 , and alkylamino; R 8 and R 9 are independently selected from a group consisting of hydrogen and alkyl; Y is selected from a group consisting of C 2-8 alkyl, and C 2-8 substituted alkyl; where ** represents the point of attachment of R 1 to R 2 and pharmaceutically acceptable salts thereof.