title: A new iridoid diglucoside from Antirrhinum siculum.
abstract: A new iridoid diglucoside has been isolated from an ethanolic extract of Antirrhinum siculum, together with five-known compounds. Its structure has been assigned as 5-O-glucopyranosyl-7α-hydroxyharpagide by spectroscopic means.
authors.affiliation: a Department of Environmental Biology , University "Sapienza" , Roma , Italy.
authors.forename: Lamberto
authors.initials: L
authors.lastname: Tomassini
authors.affiliation: a Department of Environmental Biology , University "Sapienza" , Roma , Italy.
authors.forename: Mauro
authors.initials: M
authors.lastname: Serafini
authors.affiliation: a Department of Environmental Biology , University "Sapienza" , Roma , Italy.
authors.forename: Antonio
authors.initials: A
authors.lastname: Ventrone
authors.affiliation: a Department of Environmental Biology , University "Sapienza" , Roma , Italy.
authors.forename: Marcello
authors.initials: M
authors.lastname: Nicoletti
authors.affiliation: b Department of Therapeutic Research and Medicines Evaluation , Istituto Superiore di Sanità , Rome , Italy.
authors.forename: Maria Francesca
authors.initials: MF
authors.lastname: Cometa
authors.affiliation: c Department of Health Sciences , University Magna Graecia di Catanzaro , Catanzaro , Italy.
authors.forename: Salvatore
authors.initials: S
authors.lastname: Ragusa
mesh_terms: D032161:Antirrhinum / Q000737:chemistry*; D039823:Iridoids / Q000737:chemistry / Q000302:isolation & purification*; D015394:Molecular Structure; D013057:Spectrum Analysis
chemical_list: D039823:Iridoids
keywords: 5-O-glucopyranosyl-7α-hydroxyharpagide; 5-O-glucopyranosyl-antirrhinoside; Antirrhinum siculum; antirrhinoside; arbutin; iridoid glucosides