title: Anthrone and oxanthrone C,O-diglycosides from Picramnia teapensis.
abstract: Two C,O-diglycosylated compounds, the anthrone picramnioside F, and the oxanthrone mayoside C, were isolated from the stem bark of Picramnia teapensis, along with the previously reported anthraquinones, 1-O-beta-D- and 8-O-beta-D-glucopyranosyl emodin. The compounds were separated by recycling-HPLC, and their structures were determined on the basis of spectroscopic analysis. CD measurements were used to establish the absolute configuration of the anthrone and oxanthrone. The antifungal activity of 1-O-beta-D- and 8-O-beta-D-glucopyranosyl emodin against Leucoagaricus gongilophorus was shown to be similar to that of the lignan sesamin.
authors.affiliation: Departamento de Química, Universidade Federal de São Carlos, SP, Brazil.
authors.forename: T
authors.initials: T
authors.lastname: Rodríguez-Gamboa
authors.forename: S R
authors.initials: SR
authors.lastname: Victor
authors.forename: J B
authors.initials: JB
authors.lastname: Fernandes
authors.forename: E R
authors.initials: ER
authors.lastname: Fo
authors.forename: M F
authors.initials: MF
authors.lastname: da Silva
authors.forename: P C
authors.initials: PC
authors.lastname: Vieira
authors.forename: F C
authors.initials: FC
authors.lastname: Pagnocca
authors.forename: O C
authors.initials: OC
authors.lastname: Bueno
authors.forename: M J
authors.initials: MJ
authors.lastname: Hebling
authors.forename: O
authors.initials: O
authors.lastname: Castro
mesh_terms: D002851:Chromatography, High Pressure Liquid; D006027:Glycosides / Q000737:chemistry / Q000302:isolation & purification*; D015394:Molecular Structure; D019685:Rosales / Q000737:chemistry*; D013057:Spectrum Analysis
chemical_list: D006027:Glycosides