A rapid synthetic method for the preparation of polyamide dendrimer without protection and deprotection steps has been developed. A symmetrically branched third-generation polyamide dendrimer was prepared by a convergent method involving activation of focal point with a condensing agent, diphenyl (2, 3-dihydro-2-thioxo-3-benzoxazolyl) phosphonate (DBOP), followed by condensation of the active amide with the ...