Wei, Hui-qin, Zeng
2006
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Journal
Chinese Journal of Structural Chemistry
Abstract
The title compound, acetic acid-3,5-diacetoxy-2-acetoxymethyl-6-(4-quinoxalin- 2-yl-phenoxy)-tetrahydro-pyran-4-yl-ester 8 (C28H28N2O10, Mr = 552.54), has been synthesized and its crystal structure was determined by X-ray diffraction analysis. It crystallizes in monoclinic, space group P21, a = 10.060(8), b = 5.648(4), c = 24.11(2) ?, β = 91.078(10)o, Z = 2, V = 1369.9(19) ?3, Dc = 1.339 g/cm3, μ(MoKα) = 1.03 cm-1, F(000) = 580.00, T = 1?93.1 K, ?θmax = 25.03, (?/σ)max = 0.0000, Flack = –0.0(24), the final R = 0.0680 and wR = 0.140 (w = 1/[0.0016Fo2 + 1.0000σ(Fo2)]/(4Fo2)) for 3126 observed reflections (I 2σ(I)). The pyranoid ring adopts chair conformation in the sugar moiety, and all of the acetyl groups are in the e bond of the pyranoid ring, so the sugar moiety is very stable.