(3R,4S)-4-Dibenzylamino-1-((S)-2,2-dimethyl-[1,3]dioxolan-4-yl)-pent-1-yn-3-ol

[(1S,2S)-4-((S)-2,2-Dimethyl-[1,3]dioxolan-4-yl)-2-hydroxy-1-methyl-butyl]-carbamic acid tert-butyl ester

(2R,5S,1'S)-5-{1'-[(tert-butoxycarbonyl)amino]ethyl}tetrahydrofuran-2-carboxylic acid

(2R,5R)-5-((S)-1-tert-Butoxycarbonylamino-ethyl)-tetrahydro-furan-2-carboxylic acid

(2S,5R,1'S)-2-{1'-[(tert-butoxycarbonyl)amino]ethyl}-5-(hydroxymethyl)tetrahydrofuran

[(S)-1-((2R,5R)-5-Hydroxymethyl-tetrahydro-furan-2-yl)-ethyl]-carbamic acid tert-butyl ester

2,4,6-Triisopropyl-benzenesulfonic acid (2S,5R,6S)-6-tert-butoxycarbonylamino-2,5-dihydroxy-heptyl ester

((1S,2S,5S)-2,5,6-Trihydroxy-1-methyl-hexyl)-carbamic acid tert-butyl ester

[(1S,2R)-4-((S)-2,2-Dimethyl-[1,3]dioxolan-4-yl)-2-hydroxy-1-methyl-butyl]-carbamic acid tert-butyl ester

(3S,4S)-4-Dibenzylamino-1-((S)-2,2-dimethyl-[1,3]dioxolan-4-yl)-pent-1-yn-3-ol

((1S,2R,5S)-2,5,6-Trihydroxy-1-methyl-hexyl)-carbamic acid tert-butyl ester