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5,6-Dihy-droxy-7,8-di-meth-oxy-flavone.

ABSTRACT:

The title compound (systematic name

5,6-dihy-droxy-7,8-dimeth-oxy-2-phenyl-chromen-4-one), C17H14O6, is a flavone that was isolated from the petroleum ether-soluble fraction of the rare traditional Chinese medicinal herb Saussurea involucrata. The flavone mol-ecule is almost planar, with a dihedral angle between the planes of the benzo-pyran-4-one group and the attached phenyl group of 1.89?(6)°. The 5-hy-droxy group forms a strong intra-molecular hydrogen bond with the carbonyl group, resulting in a six-membered hydrogen-bonded ring. The 6-hy-droxy group also forms an intra-molecular O-H?O contact. In the crystal, the molecules are linked by O-H?O and C-H?O hydrogen bonds and ?-? inter-actions [3.37?(2)-3.39?(2)?Å], which build up a three-dimensional network.

SUBMITTER: Jing LL

PROVIDER: S-EPMC3770373 | biostudies-literature | 2013

REPOSITORIES: biostudies-literature

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5,6-Dihy-droxy-7,8-di-meth-oxy-flavone.

Jing Lin-Lin LL Fan Xiao-Fei XF Fan Peng-Cheng PC He Lei L Jia Zheng-Ping ZP

Acta crystallographica. Section E, Structure reports online 20130615 Pt 7

<h4>The title compound (systematic name</h4>5,6-dihy-droxy-7,8-dimeth-oxy-2-phenyl-chromen-4-one), C17H14O6, is a flavone that was isolated from the petroleum ether-soluble fraction of the rare traditional Chinese medicinal herb Saussurea involucrata. The flavone mol-ecule is almost planar, with a dihedral angle between the planes of the benzo-pyran-4-one group and the attached phenyl group of 1.89 (6)°. The 5-hy-droxy group forms a strong intra-molecular hydrogen bond with the carbonyl group, r ...[more]

PMID: 24046658

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