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. 2010 Nov 30;66(Pt 12):o3362-3.
doi: 10.1107/S1600536810049123.

1,3,6-Trihy-droxy-7-meth-oxy-2,8-bis-(3-methyl-but-2-en-yl)-9H-xanthen-9-one

Gwendoline Cheng Lian Ee  1 , Wei Chung Sim, Huey Chong Kwong, Mohamed Ibrahim Mohamed Tahir, Sidik Silong
Affiliations

1,3,6-Trihy-droxy-7-meth-oxy-2,8-bis-(3-methyl-but-2-en-yl)-9H-xanthen-9-one

Gwendoline Cheng Lian Ee et al. Acta Crystallogr Sect E Struct Rep Online. .

Abstract

The title compound (trivial name α-mangostin), C(24)H(26)O(6), isolated from Cratoxylum glaucum, is characterized by a xanthone skeleton of three fused six-membered rings and two 3-methyl-but-2-enyl side chains. The three rings in the structure are nearly coplanar, with an r.m.s. deviation for the tricyclic ring system of 0.0014 Å. The two 3-methyl-but-2-enyl side chains are in (+)-synclinal and (-)-anti-clinal conformations. Intra-molecular O-H⋯O and C-H⋯O inter-actions occur. The crystal structure is stabilized by inter-molecular O-H⋯O, C-H⋯O and C-H⋯π inter-actions.

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Figures

Fig. 1.
Fig. 1.
Molecular structure of I with atom numbering and displacement ellipsoids at 50% probablity level.
Fig. 2.
Fig. 2.
View of the chain of hydrogen bonding along a axis. Symmetry codes used (-x + 3/2, y - 1/2, z).
Fig. 3.
Fig. 3.
View of the chain of hydrogen bonding along b axis. Symmetry codes used (x + 1/2, y + 1/2, -z + 1/2).
See this image and copyright information in PMC

References

    1. Allen, F. H., Kennard, O., Watson, D. G., Brammer, L., Prpen, A. G. & Taylor, R. (1987). J. Chem. Soc. Perkin Trans. 2, pp. S1–19.
    1. Altomare, A., Cascarano, G., Giacovazzo, C., Guagliardi, A., Burla, M. C., Polidori, G. & Camalli, M. (1994). J. Appl. Cryst.27, 435.
    1. Bennett, G. J., Harrison, L. J., Sia, G. L. & Sim, K. Y. (1993). Phytochemistry, 32, 1245–1251.
    1. Betteridge, P. W., Carruthers, J. R., Cooper, R. I., Prout, K. & Watkin, D. J. (2003). J. Appl. Cryst.36, 1487.
    1. Boonnak, N., Fun, H.-K., Chantrapromma, S. & Karalai, C. (2007). Acta Cryst. E63, o3958–o3959.