Patent ID: 6858600

Claim:
A compound or its pharmaceutically acceptable salt of the formula: W—B—X—B—Y Where X is selected from the group consisting of: W and Y are each independently selected from the group consisting of: Where R 1 , R 2 , R 3 , and R 4 are each independently selected from the group consisting of hydrogen, unsubstituted or substituted hydrocarbon groups, unsubstituted or substituted aryl, unsubstituted or substituted alkylene aryl, unsubstituted or substituted alkylaryl, alkoxy, ester, alkanol, alkanoic acid, thioether, thioester, amine, alkylamine, dialkylamine, unsubstituted or substituted amide or alkyleneamide, unsubstituted or substituted alkyleneamine, unsubstituted and substituted alkyleneguanidine; R b is selected from the group consisting of hydrogen, hydroxyl, amine, nitro, methoxy, carboxylic acid, ester, amide, hydrocarbon, olefin, alkylcarboxylate and its salts, alkyl linked ester, alkyl cyano, alkyl linked amine and its salts, alkoxycarboxylate and its salts, alkoxy ester, alkoxy cyano, alkoxy amine and its salts and alkoxy aryl; R n is a C 1 -C 10 alkyl, alkanol, aryl or a group, where T is H or a C 1 -C 12 saturated or unsaturated hydrocarbon, amine, alkylamine, dialkylamine, unsubstituted or substituted alkyleneamine or unsubstituted or substituted alkyleneamide; Z is O or S; and B is a single bond between carbon atoms of W—X or X—Y groups or an ester or amide group linking W—X or X—Y groups.