title: Elaeocarpionoside, a megastigmane glucoside from the leaves of Elaeocarpus japonicus Sieb. et Zucc.
abstract: From a 1-BuOH-soluble fraction of an extract of the leaves of Elaeocarpus japonicus, six megastigmane glucosides (1-6) were isolated. Five were known compounds (2-6), i.e. amelopsisionoside, citroside A, roseoside, alangionoside A and turpinionoside A, respectively. The structure of the new compound, named elaeocarpionoside, was elucidated to be (3R,4R,5S,6S,7E,9R)-megastigman-7-ene-3,4,9-triol 9-O-beta-D: -glucopyranoside by spectroscopic analyses and the modified Mosher's method.
authors.affiliation: Department of Pharmacognosy, Graduate School of Biomedical Sciences, Hiroshima University, 1-2-3 Kasumi, Minami-ku, Hiroshima, Japan.
authors.forename: Junko
authors.initials: J
authors.lastname: Shitamoto
authors.forename: Katsuyoshi
authors.initials: K
authors.lastname: Matsunami
authors.forename: Hideaki
authors.initials: H
authors.lastname: Otsuka
authors.forename: Takakazu
authors.initials: T
authors.lastname: Shinzato
authors.forename: Yoshio
authors.initials: Y
authors.lastname: Takeda
mesh_terms: D045467:Elaeocarpaceae / Q000737:chemistry*; D005960:Glucosides / Q000737:chemistry* / Q000302:isolation & purification; D045792:Norisoprenoids / Q000737:chemistry* / Q000302:isolation & purification; D018515:Plant Leaves; D013057:Spectrum Analysis / Q000379:methods
chemical_list: D005960:Glucosides; D045792:Norisoprenoids; C548231:elaeocarpionoside