(5R,6S)-6-benzyloxycarbonylamino-2,2-dimethyl-5-hydroxy-1,3-dioxepane

benzyl ((2R,3R)-3,4-dihydroxy-1-(phenylthio)butan-2-yl)carbamate

(S)-2-(benzyloxycarbonylamino)-2-((R)-2,2-dimethyl-1,3-dioxolan-4-yl)ethyl methanesulfonate

(1R)-1-benzyloxycarbonylamino-1-[(4R)-2,2-dimethyl-1,3-dioxolane-4-yl]-2-phenylthioethane

(2R,3R)-3-(((benzyloxy)carbonyl)amino)-2-hydroxy-4-(phenylthio)butyl 4-nitrobenzoate