Acta Cryst. (2002). E58, o609-o611  [ doi:10.1107/S1600536802007584 ]

Bergenin monohydrate, a constituent of Hurmiria balsamifera, at 120 K

C. S. Caldas, C. A. De Simone, M. A. Pereira, V. R. S. Malta, R. L. P. Carvalho, T. B. C. Da Silva, A. E. G. Sant'ana and L. M. Conserva

Abstract: The title compound, 3,4,4a,10b-tetrahydro-3,4,8,10-tetrahydroxy-2-(hydroxymethyl)-9-methoxypyrano[3,2-c][2]benzopyran-6(2H)-one monohydrate, C₁₄H₁₆O₉·H₂O, crystallized in space group P2₁2₁2₁ from methanol. The data collection was made at low temperature and the results obtained agree with those reported in another publication for the same compound determined at room temperature [Shang-Zhen, Hua, Xu-Wei, Zhong-Yuan & Guo-Zhi (1989). J. Struct. Chem. 8, 305-310]. However, there are small differences in the cell constants and some geometrical parameters.

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