title: Four new glycosides from the fruit of Xanthium sibiricum Patr.
abstract: Four new glycosides, namely 3β-norpinan-2-one 3-O-β-d-apiofuranosyl-(1→6)-β-d-glucopyranoside (1), (6Z)-3-hydroxymethyl-7-methylocta-1,6-dien-3-ol 8-O-β-d-glucopyranoside (2), (6E)-3-hydroxymethyl-7-methylocta-1,6-dien-3-ol 8-O-β-d-gluco-pyranoside (3), and 7-[(β-d-apiofuranosyl-(1→6)-β-d-glucopyranosyl)oxymethy]-8,8-dimethyl-4,8-dihydrobenzo[1,4]thiazine-3,5-dione (4), were isolated from the fruits of Xanthium sibiricum Patr together with three known compounds, xanthiside (5), adenosine (6), and 2,3-dihydroxy-1-(4-hydroxy-3-methoxyphenyl)-propan-1-one (7). The structures of the new compounds were determined on the basis of detailed spectroscopic analyses.
authors.affiliation: Key Laboratory of Chinese Materia Medica, Ministry of Education, Heilongjiang University of Chinese Medicine, Harbin 150040, China. hxkuang56@163.com.
authors.forename: Hai
authors.initials: H
authors.lastname: Jiang
authors.forename: Liu
authors.initials: L
authors.lastname: Yang
authors.forename: Chang
authors.initials: C
authors.lastname: Liu
authors.forename: Hui
authors.initials: H
authors.lastname: Hou
authors.forename: Qiuhong
authors.initials: Q
authors.lastname: Wang
authors.forename: Zhibin
authors.initials: Z
authors.lastname: Wang
authors.forename: Bingyou
authors.initials: B
authors.lastname: Yang
authors.forename: Haixue
authors.initials: H
authors.lastname: Kuang
mesh_terms: D002236:Carbohydrate Conformation; D005638:Fruit / Q000737:chemistry*; D006027:Glycosides / Q000737:chemistry* / Q000302:isolation & purification; D009682:Magnetic Resonance Spectroscopy; D008958:Models, Molecular; D010936:Plant Extracts / Q000737:chemistry* / Q000302:isolation & purification; D031210:Xanthium / Q000737:chemistry*
chemical_list: D006027:Glycosides; D010936:Plant Extracts