Acta Cryst. (2009). E65, o679  [ doi:10.1107/S1600536809007260 ]

1-[4-(2,3,4,6-Tetra-O-acetyl--D-allopyranosyloxy)benzylidene]thiosemicarbazide

L. Fu, X. Yin, L. Zheng, Y. Li and S. Yin

Abstract: The title compound, C₂₂H₂₇N₃O₁₀S, was synthesized by reaction of an ethanol solution of helicid (systematic name: 4-formylphenl--D-allopyranoside), thiosemicarbazide and acetic acid. The molecule exhibits a trans conformation with respect to the C=N double bond. The pyran ring adopts a chair conformation. In the crystal structure, the molecules are linked into chains parallel to the b axis by intermolecular N-HO hydrogen bonds.

Online 6 March 2009

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