Z-D-Asp-OH

Z-D-Phe-OH

Z-Phg-OH

Z-Dap-OH

Z-D-Val-OH

(s)-Benzyl 2-carbamoylpyrrolidine-1-carboxylate

Z-Glu-OBzl

N-Benzyloxycarbonyl-beta-alanine

Z-D-Glu-OH

Z-Asp(OtBu)-OH

Z-D-Glu-OBzl

Z-L-Isoleucine