Synthesis of novel dendrimers incorporating a dye into the core

Dendrimers 1a and 1b, with six and nine terminal tert-butyloxycarbonyl (t-Boc) protected amine groups, respectively, have been prepared by an efficient divergent synthetic approach. These novel dendrimers contain a dye Red-1 incorporated into the core, which adds to them, in addition to their physicochemical properties proper to dendrimers, an additional one that is the visibility perceptible to human eyes. This new property was particularly interesting in relation to our research of new carriers for active entities and/or antibodies.