title: 2-Azido-2-de-oxy-3,4-O-isopropyl-idene-2-C-methyl-d-talono-1,5-lactone.
abstract: The relative stereochemistry of the title compound, C(10)H(15)N(3)O(5), was confirmed by the crystal structure determin-ation. The absolute configuration was determined from the use of d-lyxonolactone as the starting material. The six-membered ring adopts a boat conformation with the larger azide group, rather than the methyl group, in the bowsprit position. In the crystal structure, a bifurcated inter-molecular O-H⋯O/O-H⋯N hydrogen bond links mol-ecules into chains running parallel to the b axis.
authors.forename: Sarah F
authors.initials: SF
authors.lastname: Jenkinson
authors.forename: Ni
authors.initials: N
authors.lastname: Dai
authors.forename: George W J
authors.initials: GW
authors.lastname: Fleet
authors.forename: David J
authors.initials: DJ
authors.lastname: Watkin