(2S,5S,6S)-3-aza-3-(benzyloxycarbonyl)-6-[(tert-butyloxycarbonyl)amino]-2-isobutyl-5-hydroxy-7-phenylheptanoyl amide

(2R,3R,4R)-N-benzyloxycarbonyl-2-(((S)-leucineamidyl)methyl)-3,4-dihydroxypyrrolidine

[des-tyr1]-leucine enkephalinamide

N-(1-oxyl-4'-demethyl-4-deoxypodophyllic)-L-leucine amide

Z(OMe)-Met(O)-Ala-Lys(Z)-Lys(Z)-Leu-Leu-NH2