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(-)-(1S,2R,3R,4R,5R,6R)-3-exo-{(S)-[(tert-butyl)dimethylsilyloxy][(3aS,4aS,7aS,7bR)-3a,4a,7a,7b-tetrahydro-6,6-dimethyl[1,3]dioxolo[4,5]furo[2,3-d]isoxazol-3-yl]methyl}-6-endo-chloro-2-endo-(methoxymethoxy)-5-exo-(phenylseleno)-7-oxabicyclo[2.2.1]hep...
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(-)-(1R,2R,4S,5R,6R)-6-exo-{(S)-[(tert-butyl)dimethylsilyloxy][(3aS,4aS,7aS,7bR)-3a,4a,7a,7b-tetrahydro-6,6-dimethyl[1,3]dioxolo[4,5]furo[2,3-d]isoxazol-3-yl]methyl}-5-endo-(methoxymethoxy)-3-oxo-7-oxabicyclo[2.2.1]hept-2-exo-yl 4-bromobenzenesulfonate
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(-)-(1S,2R,3S,4R)-3-exo-{(S)-[(tert-butyl)dimethylsilyloxy][(3aS,4aS,7aR,7bR)-3a,4a,7a,7b-tetrahydro-6,6-dimethyl[1,3]dioxolo[4,5]furo[2,3-d]isoxazol-3-yl]methyl}-6-chloro-2-endo-(methoxymethoxy)-7-oxabicyclo[2.2.1]hept-5-ene