ther aspect of the invention, the alkylating agent is represented by formula (V) as follows: wherein m is an integer of 1 to 4; b is 0 or 1; and R1 is as defined in formula (IV) above. [0038] Representative epoxylated alkylation agents set forth under formula (V) include but are not limited to 1 ,2-epoxyethylbenzene, l,2-epoxy-2-phenylpropane, 2- (1,1 dimethylethyl)-2-(phenylmethyl)-oxirane, 2-[2-