Volume 68 Received 1 December 2011 | ||||||||||
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aTianjin Key Laboratory on Technologies Enabling Development of Clinical, Therapeutics and Diagnostics (Theranostics), School of Pharmacy, Tianjin Medical University, Tianjin 300070, People's Republic of China
Correspondence e-mail: wangrunling@tijmu.edu.cn
In title compound, C10H12O4, all of the non-H atoms lie approximately in a plane with the largest deviation being 0.061 (2) Å. An intramolecular O-H
O hydrogen bond generates an S(6) ring motif. No classical intermolecular hydrogen bonding occurs, with only van der Waals forces stabilizing the crystal structure.
For the biological activity of isoflavones, see: Wang & Murphy (1994
); Yoshio et al. (1989
). For bond-length data, see: Allen et al. (1987
). For hydrogen-bond motifs, see: Bernstein et al. (1995
). For the preparation, see: Aalten et al. (1989
).
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Data collection: CrystalClear-SM Expert (Rigaku/MSC, 2009
); cell refinement: CrystalClear-SM Expert; data reduction: CrystalClear-SM Expert; program(s) used to solve structure: SHELXS97 (Sheldrick, 2008
); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008
); molecular graphics: SHELXTL (Sheldrick, 2008
); software used to prepare material for publication: SHELXTL.
Supplementary data and figures for this paper are available from the IUCr electronic archives (Reference: HG5147 ).
This study was supported by the National Natural Science Foundation of China (grant No. 20972112), the Research Fund for the Doctoral Program of Higher Education of China (grant No. 20091202110010), the Key Program of Tianjin Municipal Natural Science Foundation (grant No. 09JCZDJC21600), as well by Beijing Honghui Meditech Co. Ltd.
Aalten, H. L., Van Koten, G., Grove, D. M., Kuilman, T., Piekstra, O. G., Hulshof, L. A. & Sheldon, R. A. (1989). Tetrahedron, 45, 5565-5578.
![[ISI]](../../../../../../logos/isiborder.gif)
Allen, F. H., Kennard, O., Watson, D. G., Brammer, L., Orpen, A. G. & Taylor, R. (1987). J. Chem. Soc. Perkin Trans. 2, pp. S1-19.
Bernstein, J., Davis, R. E., Shimoni, L. & Chang, N.-L. (1995). Angew. Chem. Int. Ed. Engl. 34, 1555-1573.
![[ISI]](../../../../../../logos/isiborder.gif)
Rigaku/MSC (2009). CrystalClear-SM Expert and CrystalClear. Rigaku/MSC, The Woodlands, Texas, USA
Sheldrick, G. M. (2008). Acta Cryst. A64, 112-122.
![[details]](../../../../../../a/graphics/details.gif)
Wang, H. & Murphy, P. A. (1994). J. Agric. Food Chem. 42, 1666-1673.
![[ISI]](../../../../../../logos/isiborder.gif)
Yoshio, I., Kenji, Y., Yukinori, T. & Shoshiro, N. (1989). J. Antibiot. 42, 1523-1525. ![[PubMed]](../../../../../../logos/pubmedborder.gif)