General route for the synthesis of peptoids 1–4.a
a Reagents and conditions: HNR2 = piperidine or dimethylamine hydrochloride, TEA = triethylamine, CH2Cl2 = dichloromethane, H2NR′ = O-benzyl hydroxylamine hydrochloride or aniline, DIPEA = diisopropylethylamine, DMF = N,N-dimethylformamide, rt = room temperature, AcCl = acetyl chloride.