2,2-Dimethyl-propionic acid (2R,3R,3aR,6R,7R,7aR)-7-amino-2-(2,4-dioxo-3,4-dihydro-2H-pyrimidin-1-yl)-6-methoxy-hexahydro-furo[3,2-b]pyran-3-yl ester

(2R,3R,3aR,6R,7R,7aR)-7-azido-2-(2',4'-dioxo-3',4'-dihydro-2H-pyrimidin-1'-yl)-6-methoxy-3-pivaloyloxy-hexahydrofuro[3,2-b]pyran

(2R,3R,3aR,6R,7R,7aR)-7-azido-6-methoxy-2-phenylsulfanyl-hexahydrofuro[3,2-b]pyran-3-ol

(2R,3R,4S,5R)-4-Azido-2-((R)-1-hydroxy-2,2-bis-phenylsulfanyl-ethyl)-5-methoxy-tetrahydro-pyran-3-ol