methyl (4S,5S)-5-((R)-(1,3-dioxolan-2-yl)(hydroxy)methyl)-1,3-dibenzyl-2-oxoimidazolidine-4-carboxylate

2-(2-Azido-1,1-difluoro-ethyl)-5-chloro-pyridine

(4S,5S)-1,3-Dibenzyl-5-((R)-benzyloxy-[1,3]dioxolan-2-yl-methyl)-2-oxo-imidazolidine-4-carboxylic acid methyl ester

(3aS,5R,6R,6aR)-1,3-dibenzyl-6-(benzyloxy)-5-((R)-1,2-dihydroxyethyl)hexahydro-2H-furo[2,3-d]imidazol-2-one

(4S,5S)-1,3-Dibenzyl-5-((R)-1-benzyloxy-2,3-dihydroxy-propyl)-2-oxo-imidazolidine-4-carboxylic acid methyl ester