Methyl 2,3-dideoxy-2-C-methoxycarbonylmethyl-β-D-threo-pentofuranoside

Methyl 2,3-dideoxy-2-C-methoxycarbonylmethyl-β-D-arabino-hexofuranoside

1(R)-Methoxycarbonyl-2(R)-formyl-4(S)-acetoxycyclopentane

1(R)-Methoxycarbonyl-2(R)-formyl-4(S)-hydroxycyclopentane

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