Acta Cryst. (2004). E60, o1942-o1944  [ doi:10.1107/S1600536804024419 ]

4,8-Anhydro-1,2,3,5-tetradeoxy-D-allo-non-1-enitol

J. S. Rhoad, T. L. Lowary and M. J. Ferguson

Abstract: The crystal structure of 4,8-anhydro-1,2,3,5-tetradeoxy-D-allo-non-1-enitol, C₉H₁₆O₄, is reported. The pyran ring adopts the ⁴C₇ chair conformation, in which the hydroxymethyl group is oriented axially. This chair conformer can be viewed as inverted relative to those observed in the crystal structures of the majority of other C-glycosides reported to date, in which the hydroxymethyl group is generally equatorial. The conformation about the hydroxymethyl group bond is gauche-trans and the internal alkene C atom is oriented gauche to the ring O atom.

Online 9 October 2004

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