Abstract
The title compound (systematic name: 5,7-dihydroxy-3,6,8-trimethoxy-4H-chromen-4-one), C18H16O7, is a flavone that was isolated from Ainsliaea henryi. There are two molecules in the asymmetric unit, one of which has a disordered methoxy group [occupancy ratio 0.681 (9):0.319 (9)]. Both molecules have an intramolecular O—H⋯O hydrogen bond. In the crystal, molecules are linked into O—H⋯O hydrogen-bonded chains parallel to [110].
Highlights
The title compound, C18H16O7, is a flavone that was isolated from Ainsliaea henryi
Molecules are linked into O—HÁ Á ÁO hydrogenbonded chains parallel to [110]
R-factors based on F2 are statistically about twice as large as those based on F, and R- factors based on ALL data will be even larger
Summary
The title compound (systematic name: 5,7-dihydroxy-3,6,8trimethoxy-4H-chromen-4-one), C18H16O7, is a flavone that was isolated from Ainsliaea henryi. There are two molecules in the asymmetric unit, one of which has a disordered methoxy group [occupancy ratio 0.681 (9):0.319 (9)]. Both molecules have an intramolecular O—HÁ Á ÁO hydrogen bond. Molecules are linked into O—HÁ Á ÁO hydrogenbonded chains parallel to [110]. For the antifungal activity of the title compound, see: Tomas-Lorente et al (1989).
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