title: Hydroquinone diglycoside acyl esters from the stems of Glycosmis pentaphylla.
abstract: Four hydroquinone diglycoside acyl esters, glypentosides A-C (1-3) and seguinoside F (4), were isolated from the stems of Glycosmis pentaphylla. Glypentosides A-B (1-2) were identified as compounds and designated as methoxyquinol 4-O-[(5-O-trans-p-coumaroyl)-beta-d-apiofuranosyl-(1-->2)-beta-d-glucopyranoside] (1) and 4-demethylantiarol 4-O-[(3-methoxy-4-hydroxy-benzoyl)-beta-d-apiofuranosyl-(1-->2)-beta-d-glucopyranoside] (2). Glypentoside C (3) is a hydroquinone diglycoside acyl ester with a neolignan moiety in the acyl unit. Their structures were elucidated by the combination of one- and two-dimensional NMR analysis, mass spectrometry and chemical evidences.
authors.affiliation: State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Heilong tan, Kunming 650204, PR China.
authors.forename: Junsong
authors.initials: J
authors.lastname: Wang
authors.forename: Yingtong
authors.initials: Y
authors.lastname: Di
authors.forename: Xianwen
authors.initials: X
authors.lastname: Yang
authors.forename: Shunlin
authors.initials: S
authors.lastname: Li
authors.forename: Yuehu
authors.initials: Y
authors.lastname: Wang
authors.forename: Xiaojiang
authors.initials: X
authors.lastname: Hao
mesh_terms: D004952:Esters / Q000737:chemistry* / Q000302:isolation & purification; D006027:Glycosides / Q000737:chemistry* / Q000302:isolation & purification; D006873:Hydroquinones / Q000737:chemistry* / Q000302:isolation & purification; D009682:Magnetic Resonance Spectroscopy; D013058:Mass Spectrometry; D015394:Molecular Structure; D018547:Plant Stems / Q000737:chemistry*; D027821:Rutaceae / Q000737:chemistry*
chemical_list: D004952:Esters; D006027:Glycosides; D006873:Hydroquinones