Patent ID: 6908916

Claim:
A compound of formula I its enantiomers, diastereomers, or pharmaceutically acceptable salts, or solvates thereof, wherein R is selected from the group consisting of SR 2 , SOR 2 , SO 2 R 2 , OR 2 , and NR 3 R 4 ; R 1 is selected from the group consisting of aryl, substituted aryl, heterocyclo, and substituted heterocyclo; R 2 is selected from the group consisting of hydrogen, alkyl, substituted alkyl, aryl, substituted aryl, aralkyl, heterocyclo, and substituted heterocyclo; R 3 and R 4 are independently selected from the group consisting of hydrogen, alkyl, substituted alkyl, aryl, substituted aryl, heterocyclo, and substituted heterocyclo; or R 3 and R 4 may together form an optionally substituted monocyclic 4-8 membered saturated or unsaturated carbocyclic or heterocyclic ring, or an optionally substituted bicyclic 7 to 12 membered saturated or unsaturated carbocyclic or heterocyclic ring.