(1R,3R,1''R,3''S)-acetic acid 1-[4'-(1''-benzyl-4''-hydroxy-3''-methylbutylcarbamoyl)thiazol-2'-yl]-3-benzyloxycarbonylamino-4-methylpentyl ester

2-((1R,3R)-1-Acetoxy-3-benzyloxycarbonylamino-4-methyl-pentyl)-thiazole-4-carboxylic acid

(1R,3S)-(1-benzyl-4-hydroxy-3-methylbutyl)carbamic acid tert-butyl ester

(1R,2'R,1'''R,3'''S)-[1-(2'-{4''-[1'''-benzyl-4'''-(tert-butyldiphenylsilanyloxy)-3'''-methylbutylcarbamoyl]thiazol-2''-yl}-2'-hydroxyethyl)-2-methylpropyl]carbamic acid benzyl ester

(1R,3R)-acetic acid 3-benzyloxycarbonylamino-1-carbamoyl-4-methylpentyl ester

(2R,4R)-4-benzyloxycarbonylamino-2-hydroxy-5-methylhexanoic acid methyl ester

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

[L-(trans)]-4-[(t-butoxycarbonyl)amino]-2-methyl-5-phenyl-2-pentenoic acid

(4S)-4-benzyloxycarbonylamino-5-methylhex-2-enoic acid methyl ester

(1'R,2'R)-[1-(2-carbamoyl-2-hydroxyethyl)-2-methylpropyl]carbamic acid benzyl ester

(4S)-4-N-tert-butoxycarbonylamino-5-phenyl-2-methyl-2-trans-pentenoic acid, ethyl ester

(4R)-4-benzyloxycarbonylamino-5-methylhexanoic acid methyl ester

(1R,3R)-acetic acid 3-benzyloxycarbonylamino-4-methyl-1-thiocarbamoylpentyl ester