Acta Cryst. (2009). E65, o1227  [ doi:10.1107/S1600536809015694 ]

4,5,6-Tri-O-acetyl-2,3-di-S-ethyl-2,3-dithio-D-allose diethyl dithioacetal

X.-D. Xi, D.-X. Shi, H. Li, Y.-Z. Li and Q.-P. Wu

Abstract: The title compound, C₂₀H₃₆O₆S₄, was obtained by ethanethiolysis of 3,5,6-tri-O-acetyl-1,2-O-isopropylidene--D-glucofuranose. One of the ethyl groups is disordered over two sites with refined occupancies of 0.869 (6) and 0.131 (6). Compared with the precursor, the absolute configuration of the stereocenters at positions C-3 and C-2 are inverted and maintained, respectively.

Online 7 May 2009

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