Methyl 5,6-O-cyclohexylidene-2,3-dideoxy-2-C-methoxycarbonylmethylidene-β-D-erythro-hexofuranoside

methyl 5,6-O-cyclohexylidene-3-O-mesyl-β-D-allo-furanoside

1(R)-2-Oxo-3(R)-methoxy-4(R)-5(R)-methoxycarbonylbicyclo<2,2,1>-heptane