4-(N-tert-butoxycarbonyl)amino-4-deoxy-1,2,3-tri-O-tert-butyldimethylsilyl-D-ribitol

(S)-2-((2S,3R,4S)-5-Azido-2-tert-butoxycarbonylamino-3,4-dihydroxy-pentanoylamino)-3-(3,5-dibromo-4-hydroxy-phenyl)-propionic acid methyl ester

4-(N-tert-butoxycarbonyl)amino-4-deoxy-1,2,3-tri-O-tert-butyldimethylsilyl-5-O-pivaloyl-D-ribitol

methyl (5S,8S,11S)-8-((1R,2S)-3-(2,3-bis(tert-butoxycarbonyl)guanidino)-1,2-dihydroxypropyl)-11-((tert-butoxycarbonyl)amino)-16-hydroxy-7,10-dioxo-2-oxa-6,9-diaza-1(1,3),3(1,4)-dibenzenacyclododecaphane-5-carboxylate

12-[3-amino-1,2-bis-(tert-butyl-dimethyl-silanyloxy)-propyl]-19,20-dibromo-9-tert-butoxycarbonylamino-4-hydroxy-5-iodo-10,13-dioxo-2-oxa-11,14-diaza-tricyclo[15.2.2.13,7]docosa-1(20),3,5,7(22),17(21),18-hexaene-15-carboxylic acid methyl ester