title: 6-Deoxyjacareubin.
abstract: The natural compound 5,10-dihydroxy-2,2-dimethylpyrano[3,2-b]xanthen-6(2H)-one (6-deoxyjacareubin), C(18)H(14)O(5), was isolated from leaves of Vismia latifolia (Guttiferae family). The compound has four six-membered rings. The molecule has two planar benzenoid and one planar pyranoid ring, plus a pyranoid ring in a distorted chair conformation. The crystal is stabilized by one intra- and one intermolecular hydrogen bond.
authors.affiliation: Instituto de Física de São Carlos, Universidade de São Paulo, Caixa Postal 369 - CEP 13560-970, São Carlos, SP, Brazil. dorigue@if.sc.usp.br
authors.forename: A C
authors.initials: AC
authors.lastname: Doriguetto
authors.forename: M H
authors.initials: MH
authors.lastname: Santos
authors.forename: J A
authors.initials: JA
authors.lastname: Ellena
authors.forename: T J
authors.initials: TJ
authors.lastname: Nagem
mesh_terms: D018360:Crystallography, X-Ray; D020448:Ericales / Q000737:chemistry; D006860:Hydrogen Bonding; D015394:Molecular Structure; D018515:Plant Leaves / Q000737:chemistry; D011714:Pyrans / Q000737:chemistry*; D014966:Xanthenes / Q000737:chemistry*; D044004:Xanthones
chemical_list: C438127:5,10-dihydroxy-2,2-dimethylpyrano(3,2-b)xanthen-6(2H)-one; D011714:Pyrans; D014966:Xanthenes; D044004:Xanthones; C009689:xanthone