Allyl-{(R)-1-[2-(tert-butyl-diphenyl-silanyloxy)-ethyl]-decyl}-carbamic acid tert-butyl ester

Toluene-4-sulfonic acid (S)-2-tert-butoxycarbonylamino-4-(tert-butyl-diphenyl-silanyloxy)-butyl ester

(2R,3S)-tert-butyl 2-benzyl-3-hydroxy-5-oxopyrrolidine-1-carboxylate

(2S,3R,4S)-2-Benzyl-3,4-dihydroxy-5-oxo-pyrrolidine-1-carboxylic acid tert-butyl ester

(3S,4S)-5-[(tert-butoxycarbonyl)amino]-3-hydroxy-5-phenyl-1-pentene