Acta Cryst. (2008). E64, o2056  [ doi:10.1107/S1600536808030833 ]

Tectorigenin monohydrate: an isoflavone from Belamcanda chinensis

B. Liu, Y. Ma, H. Gao and Q. Wu

Abstract: The title compound [systematic name: 5,7-dihydroxy-3-(4-hydroxyphenyl)-6-methoxy-4H-chromen-4-one monohydrate], C₁₆H₁₂O₆·H₂O, is isolated from Belamcanda chinensis and is said to have antimicrobiotic and anti-inflammatory effects. The chromen-4-one system and the benzene ring are inclined at a dihedral angle of 36.79 (6)°. Molecules are linked by inter- and intramolecular O-HO hydrogen bonds.

Online 4 October 2008

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