title: Phenolic constituents from the rhizomes of Dryopteris crassirhizoma.
abstract: A new phenolic glycoside, dryopteroside (1), was isolated from the rhizomes of Dryopteris crassirhizoma (Dryopteridaceae), together with five known compounds, 4beta-carboxymethyl-(-)-epicatechin (2), isobiflorin (3), biflorin (4), 1-beta-D-glucopyranosyloxy-3-methoxy-5-hydroxybenzene (5) and (+)-catechin-6-C-beta-D-glucopyranoside (6). The new compound was elucidated to be 1-butanoyl-3-C-beta-D-glucopyranosyl-5-methyl-phloroglucinyl-6-O-beta-D-glucopyranoside (1) by chemical and various spectroscopic analyses. The known compounds 2-6 were first reported from the genus Dryopteris.
authors.affiliation: Faculty of Pharmaceutical Sciences, Toho University, Miyama 2-2-1, Funabashi, Chiba 274-8510, Japan.
authors.forename: Xiaolong
authors.initials: X
authors.lastname: Chang
authors.forename: Wei
authors.initials: W
authors.lastname: Li
authors.forename: Kazuo
authors.initials: K
authors.lastname: Koike
authors.forename: Lijun
authors.initials: L
authors.lastname: Wu
authors.forename: Tamotsu
authors.initials: T
authors.lastname: Nikaido
mesh_terms: D002240:Carbohydrate Sequence; D002681:China; D002851:Chromatography, High Pressure Liquid; D032492:Dryopteris / Q000737:chemistry*; D006027:Glycosides / Q000737:chemistry*; D006868:Hydrolysis; D008968:Molecular Conformation; D008969:Molecular Sequence Data; D010636:Phenols / Q000737:chemistry* / Q000302:isolation & purification; D010936:Plant Extracts / Q000737:chemistry; D018517:Plant Roots / Q000737:chemistry; D016339:Spectrometry, Mass, Fast Atom Bombardment; D013055:Spectrophotometry, Infrared; D013056:Spectrophotometry, Ultraviolet
chemical_list: D006027:Glycosides; D010636:Phenols; D010936:Plant Extracts; C511427:dryopteroside