(6S,7R)-7-Benzyloxymethyl-6-(tert-butyl-diphenyl-silanyloxy)-1,4-dimethyl-[1,4]diazepan-2-one

(2S,3R)-1,3-Diazido-4-benzyloxy-butan-2-ol

((((2R,3S)-2,4-diazidobutane-1,3-diyl)bis(oxy))bis(methylene))dibenzene

(4R,5S)-4-Benzyloxymethyl-2-ethylsulfanyl-1,4,5,6-tetrahydro-pyrimidin-5-ol

Toluene-4-sulfonic acid (2R,3R)-4-benzyloxy-3-(2-benzyloxycarbonylamino-acetylamino)-2-(tert-butyl-dimethyl-silanyloxy)-butyl ester