(2S,3R)-2-hydroxy-4-phenyl-3-(tosylamino)butanoic acid

(S)-benzyl 2-((2S,3S)-2,3-dihydroxy-4-phenylbutanamido)-4-methylpentanoate

tert-butyl ((2R)-3,4-dihydroxy-1-phenylbutan-2-yl)carbamate

Fmoc-L-亮氨酸