(2R,3R,4R)-4-(tert-Butyl-diphenyl-silanyloxymethyl)-3-(4-methoxy-benzylsulfanyl)-oxetane-2-carbaldehyde

[(2R,3S,4R)-4-Azidomethyl-3-(4-methoxy-benzylsulfanyl)-oxetan-2-ylmethoxy]-tert-butyl-diphenyl-silane

[(2R,3S,4R)-4-(tert-Butyl-diphenyl-silanyloxymethyl)-3-(4-methoxy-benzylsulfanyl)-oxetan-2-ylmethyl]-carbamic acid 4-nitro-benzyl ester