title: Anthraquinones from the polar fractions of Galium sinaicum.
abstract: The new anthraquinones, 6,7-dimethoxy xanthopurpurin, 6-hydroxy-7-methoxy rubiadin, 5-hydroxy-6-hydroxymethyl anthragallol 1, 3-dimethyl ether, 7-carboxy anthragallol 1,3-dimethyl ether, anthragallol 1-methyl ether 3-O-beta-D-glucopyranoside, anthragallol 1-methyl ether 3-O-rutinoside, anthragallol 3-O-rutinoside and alizarin 1-methyl ether 2-O-primeveroside were isolated from the CH2Cl2 and n-BuOH extracts of Galium sinaicum roots and their structures were established by various spectroscopic techniques. In addition, two known anthraquinones were also isolated and fully characterized.
authors.affiliation: Tokyo University of Pharmacy and Life Science, Japan.
authors.forename: A A
authors.initials: AA
authors.lastname: el-Gamal
authors.forename: K
authors.initials: K
authors.lastname: Takeya
authors.forename: H
authors.initials: H
authors.lastname: Itokawa
authors.forename: A F
authors.initials: AF
authors.lastname: Halim
authors.forename: M M
authors.initials: MM
authors.lastname: Amer
authors.forename: H E
authors.initials: HE
authors.lastname: Saad
authors.forename: S A
authors.initials: SA
authors.lastname: Awad
mesh_terms: D000880:Anthraquinones / Q000737:chemistry* / Q000302:isolation & purification; D002236:Carbohydrate Conformation; D002240:Carbohydrate Sequence; D006027:Glycosides / Q000737:chemistry / Q000302:isolation & purification; D009682:Magnetic Resonance Spectroscopy; D008969:Molecular Sequence Data; D015394:Molecular Structure; D010936:Plant Extracts; D018517:Plant Roots; D010947:Plants, Toxic
chemical_list: D000880:Anthraquinones; D006027:Glycosides; D010936:Plant Extracts