for the following products
Nalpha-(2,4,6-Triisopropylbenzenesulfonyl)-O-(tert-butyldiphenylsilyl)-pros-methyl-L-histidinol and N-[(1S)-2-[[(1,1-Dimethylethyl)diphenylsilyl]oxy]-1-[(1-methyl-1H-imidazol-5-yl)methyl]ethyl]-2,4,6-tris(1-methylethyl)benzenesulfonamide