(4S,1'R,3'R)-2-[3'-benzyloxycarbonylamino-1'-(tert-butyldiphenylsilanyloxy)-4'-methylpentyl]-4,5-dihydrooxazole-4-carboxylic acid methyl ester

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

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

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

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