Coupling of N-Boc-benzoylphenylalanine (I) with threoninamide (II) using 1-(dimethylaminopropyl)-3-ethylcarbodiimide-HCl (EDC) and 1-hydroxybenzotriazole (HOBt) in the presence of N-methylmorpholine (NMM) afforded the N-Boc-dipeptide (III), which was deprotected with trifluoroacetic acid in CH2Cl2 to give (IV). Further coupling of (IV) with N-Boc-asparagine (V) using EDC and HOBt, followed by Boc deprotection with trifluoroacetic acid, provided tripeptide (VII). Finally, acylation of (VII) with benzoic anhydride in the presence of triethylamine furnished the target benzamide.