(3aR,3bR,7S,7aR,8aR)-7-Azido-2,2-dimethyl-tetrahydro-[1,3]dioxolo[4,5]furo[3,2-b]pyran-6-one

(3aR,3bR,6S,7S,7aR,8aR)-7-azido-6-methoxy-2,2,6-trimethyl-hexahydro-1,3,4,8-tetraoxa-cyclopenta[a]indene

(3aR,3bR,6S,7S,7aR,8aR)-7-Azido-2,2,6-trimethyl-hexahydro-[1,3]dioxolo[4,5]furo[3,2-b]pyran-6-ol

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

(3aR,3bR,7aR,8aR)-2,2-dimethyl-3a,5,7a,8a-tetrahydro-3bH-1,3,4,8-tetraoxa-cyclopenta[a]indene