N-methyl-L-phenylalanine allyl ester hydrochloride 、 N,O-dimethyl-L-tyrosine allyl ester hydrochloride 、 Fmoc-D-Tyr-OAll 、
3-(3-(1-E-n-pentenyl)phenyl)-E-acrylic acid 以12 mg的产率得到(S)-2-{[(S)-2-[((R)-3-(4-Hydroxy-phenyl)-2-{(E)-3-[((E)-3-pent-1-enyl)-phenyl]-acryloylamino}-propionyl)-methyl-amino]-3-(4-methoxy-phenyl)-propionyl]-methyl-amino}-3-phenyl-propionic acid