4-(4-(4-aminophenyl)buta-1,3-diynyl)-N-((2S,3S)-3-hydroxy-1-(hydroxyamino)-3-(4-(hydroxymethyl)phenyl)-1-oxobutan-2-yI)benzamide

3-hydroxy-2-(hydroxymethyl)-2-methylpropyl (2S,3S)-2-amino-3-hydroxy-3-(4-(hydroxymethyl)phenyl)butanoate

3-hydroxy-2-(hydroxymethyl)-2-methylpropyl (2S,3S)-2-(4-((4-aminophenyl)buta-1,3-diyn-1-yl)benzamido)-3-hydroxy-3-(4-(hydroxymethyl)phenyl)butanoate

benzyl (S)-(1-(4-methyl-2,6,7-trioxabicyclo[2.2.2]octan-1-yl)-2-oxo-2-(4-(((triisopropylsilyl)oxy)methyl)phenyl)ethyl)carbamate

benzyl ((1S,2S)-2-hydroxy-1-(4-methyl-2,6,7-trioxabicyclo[2.2.2]octan-1-yl)-2-(4-(((triisopropylsilyl)oxy)methyl)phenyl)propyl)carbamate