(R)-2-((S)-2-((tert-butoxycarbonyl)amino)-N-methyl propanamido)-3-(1H-indol-3-yl)propanoic acid

(2S,3S)-methyl 3-amino-3-(4-(2-(tert-butyldimethylsilyloxy)ethyl)phenyl)-2-methoxypropanoate

(E)-methyl 3-(4-(2-(tert-butyldimethylsilyloxy)ethyl)phenyl)acrylate

(2S,3R)-methyl 3-(4-(2-(tert-butyldimethylsilyloxy)ethyl)phenyl)-2,3-dihydroxypropanoate

(2S,3S)-methyl 3-azido-3-(4-(2-(tert-butyldimethylsilyloxy)ethyl)phenyl)-2-hydroxypropanoate