7-Hydroxy-6-methoxy-3-[(2-oxo-2H-1-benzopyran-7-yl)oxy]-2H-1-benzopyran-2-one

被引：1

作者：

Zhang, TZ

Wei, CY ^{[1
]}

Xu, GH

Park, SW

机构：

[1] NE Normal Univ, Inst Grassland Sci, Changchun 130024, Peoples R China

[2] Minist Educ, Key Lab Vegetat Ecol, Changchun 130024, Peoples R China

[3] NE Normal Univ, Dept Chem, Changchun 130024, Peoples R China

[4] Konkuk Univ, Coll Life & Environm Sci, Seoul 143701, South Korea

来源：

ACTA CRYSTALLOGRAPHICA SECTION C-STRUCTURAL CHEMISTRY | 2006年 / 62卷

关键词：

D O I：

10.1107/S0108270106000874

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The title compound, daphnoretin, C19H12O7, was isolated from the leaves of Stellera chamaejasme L. Two independent molecules are present in the asymmetric unit, with similar conformations. Each of the independent molecules is composed of two chromene systems connected by an ether bridge. The dihedral angles between the mean planes of the two chromene systems are 86.9( 2) and 81.9 ( 3) degrees. Molecules form chains via hydrogen bonds and adjacent chains are parallel to each other.

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页码：O86 / O88

页数：3

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