(2R,3S)-2-[(1S,3S)-1,3-Dihydroxy-4-(2,4,6-trimethyl-benzenesulfonyloxy)-butyl]-3-hydroxy-pyrrolidine-1-carboxylic acid benzyl ester

2,2,2-Trichloro-1-{(2R,3S)-2-[(R)-2-((S)-2,2-dimethyl-[1,3]dioxolan-4-yl)-1-iodo-ethyl]-3-hydroxy-pyrrolidin-1-yl}-ethanone

2,2,2-Trichloro-acetimidic acid (Z)-(S)-4-((S)-2,2-dimethyl-[1,3]dioxolan-4-yl)-1-[2-(2,2,2-trichloro-acetimidoyloxy)-ethyl]-but-2-enyl ester