title: New phenolic glycosides from the seeds of Cucurbita moschata.
abstract: Five new phenolic glycosides, cucurbitosides A-E (1-5), were isolated from the seeds of Cucurbita moschata. Their structures were elucidated as 2-(4-hydroxy)phenylethanol 4-O-(5-O-benzoyl)-beta-D-apiofuranosyl(1-->2)-beta-D-glucopyranoside (1), 2-(4-hydroxyphenyl)ethanol 4-O-[5-O-(4-hydroxy)benzoyl]-beta-D-apiofuranosyl(1-->2)-beta-D-glucopyranoside (2), 4-hydroxybenzyl alcohol 4-O-(5-O-benzoyl)-beta-D-apiofuranosyl(1-->2)-beta-D-glucopyranoside (3), 4-hydroxybenzyl alcohol 4-O-[5-O-(4-hydroxy)benzoyl]-beta-D-apiofuranosyl(1-->2)-beta-D-glucopyranoside (4) and 4-hydroxyphenyl 5-O-benzoyl-beta-D-apiofuranosyl(1-->2)-beta-D-glucopyranoside (5) on the basis of spectroscopic analysis and chemical evidence.
authors.affiliation: Faculty of Pharmaceutical Science, Toho University, Chiba, Japan.
authors.forename: Kazuo
authors.initials: K
authors.lastname: Koike
authors.forename: Wei
authors.initials: W
authors.lastname: Li
authors.forename: Lijuan
authors.initials: L
authors.lastname: Liu
authors.forename: Emiko
authors.initials: E
authors.lastname: Hata
authors.forename: Tamotsu
authors.initials: T
authors.lastname: Nikaido
mesh_terms: D002240:Carbohydrate Sequence; D028464:Cucurbita / Q000737:chemistry*; D006027:Glycosides / Q000737:chemistry*; D006868:Hydrolysis; D009682:Magnetic Resonance Spectroscopy; D008968:Molecular Conformation; D008969:Molecular Sequence Data; D010636:Phenols / Q000737:chemistry*; D012639:Seeds / Q000737:chemistry*; D016339:Spectrometry, Mass, Fast Atom Bombardment; D013055:Spectrophotometry, Infrared; D013056:Spectrophotometry, Ultraviolet
chemical_list: D006027:Glycosides; D010636:Phenols