Benzoic acid (2R,3S)-2-tert-butoxycarbonylamino-5-(tert-butyl-diphenyl-silanyloxy)-3-methyl-pentyl ester

4-[(S)-3-(tert-Butyl-diphenyl-silanyloxy)-1-methyl-propyl]-2''-methoxymethoxymethyl-[2,4';2',4'']teroxazole

(E)-(3S,9S)-3-(tert-Butyl-diphenyl-silanyloxy)-9-(2''-methoxymethoxymethyl-[2,4';2',4'']teroxazol-4-yl)-7-oxo-dec-5-enoic acid tert-butyl ester