title: Secoiridoid glucosides and unusual recyclized secoiridoid aglycones from Ligustrum vulgare.
abstract: Phytochemical investigation of the dried leaves and twigs of Ligustrum vulgare has led to the isolation of the secoiridoid glucosides, (2''R)- and (2''S)-10-hydroxy-2''-methoxyoleuropeins (1 and 2), and the secoiridoid aglycones, ligustrohemiacetals A (3) and B (4). Their structures were elucidated by spectroscopic and chemical means. Enzymatic hydrolysis of 10-hydroxyoleuropein to the analog of ligustrohemiacetals A and B led to the structural revision of jasmolactones.
authors.affiliation: Kobe Pharmaceutical University, 4-19-1 Motoyamakita-machi, Higashinada-ku, Kobe 658-8558, Japan. tanahash@kobepharma-u.ac.jp
authors.forename: Takao
authors.initials: T
authors.lastname: Tanahashi
authors.forename: Yukiko
authors.initials: Y
authors.lastname: Takenaka
authors.forename: Naoaki
authors.initials: N
authors.lastname: Okazaki
authors.forename: Megumi
authors.initials: M
authors.lastname: Koge
authors.forename: Naotaka
authors.initials: N
authors.lastname: Nagakura
authors.forename: Toyoyuki
authors.initials: T
authors.lastname: Nishi
mesh_terms: D006868:Hydrolysis; D039823:Iridoids / Q000737:chemistry / Q000302:isolation & purification; D031659:Ligustrum / Q000737:chemistry*; D015394:Molecular Structure; D010936:Plant Extracts / Q000737:chemistry*; D018515:Plant Leaves; D018547:Plant Stems
chemical_list: D039823:Iridoids; D010936:Plant Extracts