abstract |
A compound of formula (VI): ** (See formula) ** wherein each of R1 and R2 is independently selected from a methoxy group, a hydroxyl group, and an alkylsulfonyl group; L is a carbonyl, alkylene or alkenylene, or alkynyl when Z is not present; Z is -H, -OH, a substituted styrenyl, an aromatic ring, a cycloalkyl, -COR3, -CONR3R4 or -CX3, where R3 and R4 are each -H, -CH3, -CnH2n + 1, in the that n = 2-4, a heterocyclic, a heteroaryl or a cycloalkyl, or R3 and R4 together form a heterocyclic; or Z is COOR where R is -H, -CH3, - CnH2n + 1, where n = 2-4, or a cycloalkyl, when Y is not H; and X is -F, -Cl, or -Br; Y is a short C1-3 alkyl; wherein each R1 or R2-substituted phenyl of the compound is mono- or disubstituted with R1 or R2. |