for the following products
tert-Butyl n-[(2S,3R)-3-hydroxy-4-[N-(2-methylpropyl)(4-nitrobenzene)sulfonamido]-1-phenylbutan-2-yl]carbamate | [(1S,2R)-1-Benzyl-2-hydroxy-3-[isobutyl[(4-nitro-phenyl)sulfonyl)]amino]propyl]-carbamic acid tert-Butyl ester and tert-Butyl (1S,2R)-1-benzyl-2-hydroxy-3-[isobutyl[(4-nitrophenyl)sulfonyl]amino]propyl]carbamate
