di(tert-butyl) (2R,4S)-5-hydroxy-4-methyl-1-phenylpentan-2-yliminodicarbonate

allyl (2S,4R)-4-(bis(tert-butoxycarbonyl)amino)-2-methyl-5-phenylpentanoate

tert-butyl (R)-(1-hydroxy-4-methylpentan-3-yl)(methyl)carbamate

(9H-Fluoren-9-yl)methyl ((2S,3S)-1-fluoro-3-methyl-1-oxopentan-2-yl)carbamate