Acta Cryst. (2006). E62, o1254-o1256  [ doi:10.1107/S1600536806007124 ]

2,3-Dihydro-7,8-dihydroxy-3-[(4-methoxyphenyl)methylene]-4H-1-benzopyran-4-one

S. Chantrapromma, S. Boonsri, H.-K. Fun, S. Anjum and A. Kanjana-opas

Abstract: The title compound, also known as intricatinol, C₁₇H₁₄O₅, is a homoisoflavanoid that was isolated for the first time from the twigs and stems of Caesalpinia digyna Rottler. The pyran ring is in an envelope form. O-HO intramolecular hydrogen bonds are observed. Symmetry-related molecules are linked via O-HO intermolecular interactions to form infinite one-dimensional chains. These chains are interconnected to form a three-dimensional molecular network.

Online 8 March 2006

Copyright © International Union of Crystallography
IUCr Webmaster