title: Pomiferin.
abstract: The crystal structure of pomiferin, 3-(3,4-dihydroxyphenyl)-5-hydroxy-8,8-dimethyl-6-(3-methylbut-2-enyl)-4H,8H-pyrano[2,3-h]chromen-4-one, C(25)H(24)O(6), has been determined. The benzopyranone ring system is nearly planar and the dihedral angle between the phenyl ring and the benzopyranone moiety is 40.85 (4) degrees. The crystal structure is stabilized by a one-dimensional chain of inter- and intramolecular O-H...O hydrogen bonds, with O...O distances in the range 2.5546 (15)-2.7999 (16) A.
authors.affiliation: Laboratory of Functional Genomics and Proteomics, Faculty of Science, Masaryk University, Kotlárská 2, CZ-611 37 Brno, Czech Republic. marek@chemi.muni.cz
authors.forename: Jaromír
authors.initials: J
authors.lastname: Marek
authors.forename: Dagmar
authors.initials: D
authors.lastname: Veselá
authors.forename: Margita
authors.initials: M
authors.lastname: Lisková
authors.forename: Milan
authors.initials: M
authors.lastname: Zemlicka
mesh_terms: D000890:Anti-Infective Agents / Q000737:chemistry*; D001578:Benzopyrans / Q000737:chemistry*; D018360:Crystallography, X-Ray; D005638:Fruit / Q000737:chemistry*; D006860:Hydrogen Bonding; D007529:Isoflavones; D031624:Maclura / Q000737:chemistry*; D008958:Models, Molecular; D008968:Molecular Conformation
chemical_list: D000890:Anti-Infective Agents; D001578:Benzopyrans; D007529:Isoflavones; C474837:pomiferin