Patent ID: 7582785

Claim:
A compound having the formula 23, wherein: R a , R b and R c , are independently selected from the group consisting of hydrogen, alkyl, aryl, heteroaryl, acyl, silyl, alkoxyacyl and aminoacyl; R 1 , R 2 and R 3 are independently selected from the group consisting of hydrogen, alkyl, perfluoroalkyl, aryl and heteroaryl; Q is selected from the group consisting of: —C(O)-A, —SO 2 -A, —PO(OR)-A, where A is hydroxyl, alkoxy, aryloxy, amino, alkylamino, dialkylamino, or —OM, where M is a cation selected from the group consisting of ammonium, tetra-alkyl ammonium, Na, K, Mg, and Zn, and R is hydroxyl or alkoxy; Y, Z and W are linkers independently selected from the group consisting of a ring containing up to 20 atoms and a chain of up to 20 atoms, provided that Y, Z and W can independently include one or more nitrogen, oxygen, sulfur or phosphorous atoms, and further provided that Y, Z and W can independently include one or more substituents selected from the group consisting of hydrogen, alkyl, alkenyl, alkynyl, aryl, heteroaryl, chloro, iodo, bromo, fluoro, hydroxyl, alkoxy, aryloxy, carboxy, amino, alkylamino, dialkylamino, acylamino, carboxamido, cyano, oxo, thio, alkylthio, arylthio, acylthio, alkylsulfonate, arylsulfonate, phosphoryl, and sulfonyl, and further provided that Y, Z and W can also contain one or more fused carbocyclic, heterocyclic, aryl or heteroaryl rings, and provided that all linkers Y are connected to the adjacent C(R)OR group via a carbon atom; and G is selected from the group consisting of hydrogen, alkyl, perfluoroalkyl, alkenyl, alkynyl, aryl, heteroaryl, chloro, iodo, bromo, fluoro, hydroxyl, alkoxy, aryloxy, carboxy, amino, alkylamino, dialkylamino, acylamino, and carboxamido.