title: A phenylethanoid glycoside from Plantago asiatica.
abstract: A new phenylethanoid glycoside, plantasioside, was isolated from the aerial parts of Plantago asiatica. The structure of plantasioside was deduced from chemical and spectral evidence to be 1',2'-[beta(3,4-dihydroxyphenyl)-alpha,beta-dioxoethanol]-6'-O- caffeoyl- O-beta-D-glucopyranoside. In addition, the structure of orobanchoside from P. depressa and P. camtschatica was revised to be 1',2'-[beta(3,4-dihydroxyphenyl)- alpha,beta-dioxoethanol]-4'-O-caffeoyl-O-alpha-L-rham- nopyranosyl-(1-->3)-O- beta-D-glucopyranoside from beta-hydroxy-[beta(3,4-dihydroxyphenyl)-ethyl]-4'-O-caffeoyl-O-alp ha-L- rhamnopyranosyl-(1-->2)-O-beta-D-glucopyranoside.
authors.affiliation: Faculty of Pharmaceutical Sciences, Higashi-Nippon-Gakuen-University, Hokkaido, Japan.
authors.forename: S
authors.initials: S
authors.lastname: Nishibe
authors.forename: Y
authors.initials: Y
authors.lastname: Tamayama
authors.forename: M
authors.initials: M
authors.lastname: Sasahara
authors.forename: C
authors.initials: C
authors.lastname: Andary
mesh_terms: D002236:Carbohydrate Conformation; D002240:Carbohydrate Sequence; D005960:Glucosides / Q000737:chemistry* / Q000302:isolation & purification; D006027:Glycosides / Q000737:chemistry* / Q000302:isolation & purification; D009682:Magnetic Resonance Spectroscopy; D008969:Molecular Sequence Data; D015394:Molecular Structure; D009844:Oligosaccharides / Q000737:chemistry / Q000302:isolation & purification; D009904:Optical Rotation; D010943:Plantago / Q000737:chemistry*; D010946:Plants, Medicinal; D016339:Spectrometry, Mass, Fast Atom Bombardment; D013056:Spectrophotometry, Ultraviolet
chemical_list: D005960:Glucosides; D006027:Glycosides; D009844:Oligosaccharides; C093424:plantasioside