2-[(1R,3R)-3-Benzyloxycarbonylamino-1-(tert-butyl-diphenyl-silanyloxy)-4-methyl-pentyl]-thiazole-4-carboxylic acid

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

(2S,2'R,4'R)-2-[4'-benzyloxycarbonylamino-2'-(tert-butyldiphenylsilanyloxy)-5'-methylhexanethioylamino]-3-hydroxypropionic acid methyl ester