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

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

[(1R,3S)-1-Benzyl-4-(tert-butyl-diphenyl-silanyloxy)-3-methyl-butyl]-carbamic acid tert-butyl ester