Acetyl-4-bromo-DL-phenylalanine

Boc-Freidinger's lactam

H-Leucinol-2-chlorotrityl resin

Fmoc-2-aminobutyric acid 4-alkoxybenzyl alcohol resin

Na,d-Bis-Boc-D-ornithine

Benzoyl-L-aspartic acid a- methyl ester

Fmoc-DL-norleucine

N-芴甲氧羰基-DL-正亮氨酸

L-Aspartic acid b-tert-butyl ester a-allyl ester hydrochloride

D-Glutamic acid a-amide hydrochloride

Gly-Met-OH

Ile-Ile-OH