3-((3aS,4S,6R,7R,7aS)-7-azido-4-(benzyloxy)-tetrahydro-2,2-dimethyl-3aH-[1,3]dioxolo[4,5-c]pyran-6-yl)propan-1-ol

甲烷磺酰氯

(2R)-6-hydroxy-2-(3-tert-butyldimethylsilyloxypropyl)-2H-pyran-3(6H)-one

tert-butyl (6R)-5,6-dihydro-6-(3-tert-butyldimethylsilyloxypropyl)-5-oxo-2H-pyran-2-yl carbonate

(2R,6S)-6-(benzyloxy)-2-(3-tert-butyldimethylsilyloxypropyl)-2H-pyran-3(6H)-one