title: Iridoid glycosides from Eremostachys glabra.
abstract: Reversed-phase preparative HPLC of a methanol extract of the rhizomes of Eremostachys glabra yielded three new iridoid glycosides, namely, 6,9-epi-8-O-acetylshanziside methyl ester, 5,9-epi-penstemoside, and 5,9-epi-7,8-didehydropenstemoside. Their structures were elucidated on the basis of spectroscopic data interpretation. The free-radical scavenging activity of these compounds was assessed using the DPPH assay.
authors.affiliation: School of Pharmacy, Tabriz University of Medical Sciences, Tabriz, Iran.
authors.forename: Abbas
authors.initials: A
authors.lastname: Delazar
authors.forename: Maureen
authors.initials: M
authors.lastname: Byres
authors.forename: Simon
authors.initials: S
authors.lastname: Gibbons
authors.forename: Yashodharan
authors.initials: Y
authors.lastname: Kumarasamy
authors.forename: Masoud
authors.initials: M
authors.lastname: Modarresi
authors.forename: Lutfun
authors.initials: L
authors.lastname: Nahar
authors.forename: Mohammad
authors.initials: M
authors.lastname: Shoeb
authors.forename: Satyajit D
authors.initials: SD
authors.lastname: Sarker
mesh_terms: D002851:Chromatography, High Pressure Liquid; D016166:Free Radical Scavengers / Q000737:chemistry / Q000302:isolation & purification* / Q000494:pharmacology; D006027:Glycosides / Q000737:chemistry / Q000302:isolation & purification* / Q000494:pharmacology; D007492:Iran; D057889:Iridoid Glycosides; D039823:Iridoids / Q000737:chemistry / Q000302:isolation & purification* / Q000494:pharmacology; D019686:Lamiaceae / Q000737:chemistry*; D015394:Molecular Structure; D019906:Nuclear Magnetic Resonance, Biomolecular; D010946:Plants, Medicinal / Q000737:chemistry*; D027343:Rhizome / Q000737:chemistry
chemical_list: C493128:5,9-epi-7,8-didehydropenstemoside; C493129:5,9-epi-penstemoside; C493126:6,9-epi-8-O-acetylshanziside methyl ester; D016166:Free Radical Scavengers; D006027:Glycosides; D057889:Iridoid Glycosides; D039823:Iridoids