4(S)-Benzyl-3-(tert-butoxycarbonyl)-2,2-dimethyl-5(R)-oxazolidineacetic acid chloride

N-Boc-β-keto-γ-phenylalanine

tert-butyl N-[(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]carbamate

(3S,4aS,8aS)-2-[(3S)-3-amino-2-hydroxy-4-phenylbutyl]-N-tert-butyl-3,4,4a,5,6,7,8,8a-octahydro-1H-isoquinoline-3-carboxamide

Saquinavir

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