Acta Cryst. (2006). E62, o473-o475  [ doi:10.1107/S1600536805043205 ]

Pentafluorophenyl (3R,4R,5R)-5-{[(3R,4R,5R)-5-azidomethyl-3,4-dimethoxy-2,3,4,5-tetrahydrofuran-3-carbonylamino]methyl}-3,4-dimethoxy-2,3,4,5-tetrahydrofuran-3-carboxylate

F. Punzo, A. R. Cowley, D. J. Watkin, M. Iezzi Simone, A. A. Edwards, G. E. Tranter and G. W. J. Fleet

Abstract: The crystal structure of the title compound, C₂₂H₂₅F₅N₄O₉, an important intermediate in the synthesis of novel biopolymers containing branched carbon chains, establishes the relative stereochemistry at all six chiral centres of the dipeptide. The structure may indicate a predisposition to the organization of secondary structure by novel dipeptide isosteres. An intermolecular hydrogen bond between the NH group and one of the N atoms of the azide group contributes to the stabilization of the packing.

Online 7 January 2006

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