Abstract Herein, we report an efficient route for the asymmetric synthesis of β 2-aminoxy acids as well as experimental and theoretical studies of conformations of peptides composed of β 2-aminoxy acids. The nine-membered-ring intramolecular hydrogen bonds, namely, β N [BOND] O turns, are generated between adjacent residues in those peptides, in accordance with our computational results. The presence of two consecutive homochiral β ...