(S)-2-amino-3-phenylpropanoic anhydride

N-t-butoxycarbonyl-L-phenylalanine anhydride

DELTORPHIN I

(2S,3R)-2-acetamido-N-[(2R)-2-amino-3-(1-formylindol-3-yl)propanoyl]-N-[(2S)-2-[benzyl(methyl)amino]-3-phenylpropanoyl]-3-hydroxybutanamide

benzyl N-[(2S)-1-[[(2S,3R)-4-[(3S,4aS,8aS)-3-(tert-butylcarbamoyl)-3,4,4a,5,6,7,8,8a-octahydro-1H-isoquinolin-2-yl]-3-hydroxy-1-phenylbutan-2-yl]amino]-4-amino-1,4-dioxobutan-2-yl]carbamate