(2S,4R)-allyl 4-(2-((1R,3R)-1-acetoxy-3-((2S,3S)-2-amino-N,3-dimethylpentanamido)-4-methylpentyl)thiazole-4-carboxamido)-2-methyl-5-phenylpentanoate

benzyl (R)-(1-((tert-butyldimethylsilyl)oxy)-4-methylpentan-3-yl)(methyl)carbamate

benzyl (R)-1-(tert-butyldimethylsilyloxy)-4-methylpentan-3-ylcarbamate

(1R,3R)-3-((tert-butoxycarbonyl)methylamino)-1-(4-formylthiazol-2-yl)-4-methylpentyl acetate

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

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

allyl (2S,4R)-4-(2-((5S,8R,10R)-5-sec-butyl-1-(9H-fluoren-9-yl)-8-isopropyl-7-methyl-3,6,12-trioxo-2,11-dioxa-4,7-diazatridecan-10-yl)thiazole-4-carboxamido)-2-methyl-5-phenylpentanoate

(1R,3R)-3-(tert-butoxycarbonyl(methyl)amino)-1-(4-(hydroxymethyl)thiazol- 2-yl)-4-methylpentyl acetate

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

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

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

tert-butyl (1R,3R)-1-(4-((tert-butyldimethylsilyloxy)methyl)thiazol-2-yl)-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

2-((1R,3R)-1-acetoxy-3-((tert-butoxycarbonyl)(methyl)amino)-4-methylpentyl)thiazole-4-carboxylic acid

(R)-3-((tert-butoxycarbonyl)methyl)amino-4-methylpentanal

[(R)-1-(2-Hydroxy-ethyl)-2-methyl-propyl]-carbamic acid benzyl ester