Benzoyl-DL-phenylalanine b-naphthylamide

S-Trityl-D-penicillamine

Leu-Val-OH

L-Proline 4-methoxy-b-naphthylamide hydrochloride

L-Threonine b-naphthylamide

Na-Ac-Ng-Boc-L-2,4-diaminobutyric acid

Z-Ala-Phe-OH

Z-D-serine benzyl ester

Z-Val-Phe-OH

Na-Z-Ne-trifluoroacetyl-L-lysine

S-4-Methoxybenzyl-L-penicillamine