solid-phase syntheses of artificial β-sheets 1−4, which mimic the structure and hydrogen-bonding patterns of protein β-sheets. In these compounds, molecular templates induce β-sheet structures in attached peptide strands. The templates consist of di- and triurea derivatives, which hold peptide and peptidomimetic strands in proximity, and β-strandmimics, which hydrogen bond to the peptide strands. The syntheses