(R)-2-(tert-Butoxycarbonyl-methyl-amino)-3-[4-(tert-butyl-dimethyl-silanyloxy)-3-iodo-phenyl]-propionic acid 8-(tert-butoxycarbonylmethyl-carbamoyl)-octyl ester
(R)-3-[4-(tert-Butyl-dimethyl-silanyloxy)-3-iodo-benzyl]-4-methyl-1-oxa-4,7-diaza-cyclohexadecane-2,5,8-trione
9-t-butyldimethylsilyloxy-1-t-butyldiphenylsilyloxynonane