Patent ID: 8609881

Claim:
A compound selected from the group of compounds represented by structural Formula (I): wherein in Formula I: R 1 is selected from the group consisting of aryl and heteroaryl; X is selected from the group consisting of —O—, —S—, —NH—, cycloalkylene, heterocyclylene, arylene, alkarylene, and heteroarylene; Y is a substituted alkylene group comprising an alkylene backbone having at least two contiguous carbon atoms and which optionally can be interrupted by one or more —O—, —S—, or —NH— moieties, provided that each —O—, —S—, or —NH— moiety of Y, if present, is not adjacent to an —O—, —S—, or —NH— of X, wherein the alkylene group of Y has substituents which are independently selected from the group consisting of —OH, —NH 2 , —SH, cycloalkyl, heterocyclyl, aryl, and heteroaryl, or two hydrogen atoms on the same carbon atom of Y are replaced by carbonyl, and wherein at least two substituents of Y are each independently selected from the group consisting of —OH, —NH 2 , and —SH, and provided that each of the —OH, —NH 2 , or —SH groups is not attached to the same carbon atom of Y or an —O—, —S—, or —NH— backbone moiety of Y, and provided that Y has less than three —OH substituents.