| abstract |
The present invention relates to a novel class of compounds comprising formula I, wherein n is 0 or 1. A is NR 1 , O, or S, wherein R 1 is H, hydroxyl, C 1 -C 10 alkyl, C 1 -C 10 alkoxy, alkenyl, aryl, alkylaryl or arylalkyl. X is a carboxylate, a phosphonate, or a phosphate residue, or a C 1 -C 10 alkyl residue optionally substituted with a carboxylate, phosphonate or phosphate residue. Y is a C 1 -C 20 alkyl, alkenyl, halide, hydroxyl, C 1 -C 20 alkoxy, aryl, alkylaryl, arylalkyl, cycloalkyl, cycloalkenyl, or a heterocyclic ring and is optionally substituted with one or more halides. Z is a H, a hydroxyl group, a halide, an aryl group, an alkylaryl group, an arylalkyl group, a cycloalkyl group, a cycloalkenyl group or a heterocyclic ring and is optionally substituted with one or more C 1 -C 10 alkyl groups, C 1 -C 10 alkoxy groups, hydroxyl groups, cyano groups, carboxylate groups, halides, aryl groups, alkylaryl groups, arylalkyl groups, cycloalkyl groups, cycloalkenyl groups or heterocyclic rings. |