benzyl (2S,3S,4S,5S)-3,4-bis(benzyloxy)-2-((benzyloxy)methyl)-5-((R)-1,2-dihydroxyethyl)pyrrolidine-1-carboxylate

benzyl (2S,3S,4S,5S)-3,4-bis(benzyloxy)-2-((benzyloxy)methyl)-5-((S)-1,2-dihydroxyethyl)pyrrolidine-1-carboxylate

1,4-bis[(3aS,4R,6S,6aS)-tetrahydro-6-methoxy-2,2-dimethylfuro[3,4-d][1,3]dioxol-4-yl]buta-1,3-diyne

(2S,3S,4S)-3,4-bis(benzyloxy)-2-(benzyloxymethyl)-6-[(3aS,4S,6R,6aS)-tetrahydro-4-methoxy-2,2-dimethylfuro[3,4-d][1,3]dioxol-6-yl]-1-azabicyclo[3.2.0]heptan-7-one

(2S,3S,4S)-3,4-bis(benzyloxy)-2-(benzyloxymethyl)-6-[(3aR,5R,5aS,8aS,8bR)-tetrahydro-2,2,7,7-tetramethyl-3aH-bis[1,3]dioxolo-[4,5-b:4',5'-d]pyran-5-yl]-1-azabicyclo[3.2.0]heptan-7-one