title: Components of ether-insoluble resin glycoside (convolvulin) from seeds of Quamoclit pennata.
abstract: Alkaline hydrolysis of the ether-insoluble resin glycoside (convolvulin) fraction of the seeds of Quamoclit pennata BOJER (Convolvulaceae) provided five new glycosidic acids, quamoclinic acids B, C, D, E, and F, along with six organic acids, isobutyric, 2S-methylbutyric, tiglic, 2R,3R-nilic, 7S-hydroxydecanoic, and 7S-hydroxydodecanoic acids. These new compounds were characterized on the basis of spectroscopic data as well as chemical evidence. Quamoclinic acids E and F are the first examples of heptaglycosides of glycosidic acid.
authors.affiliation: School of Agriculture, Tokai University, 5435 Minamiaso, Aso, Kumamoto 869-1404, Japan. mono@agri.u-tokai.ac.jp
authors.forename: Masateru
authors.initials: M
authors.lastname: Ono
authors.forename: Yoko
authors.initials: Y
authors.lastname: Takagi-Taki
authors.forename: Fumiko
authors.initials: F
authors.lastname: Honda-Yamada
authors.forename: Naoki
authors.initials: N
authors.lastname: Noda
authors.forename: Kazumoto
authors.initials: K
authors.lastname: Miyahara
mesh_terms: D027722:Convolvulaceae / Q000737:chemistry*; D004986:Ether / Q000737:chemistry*; D006027:Glycosides / Q000737:chemistry*; D009682:Magnetic Resonance Spectroscopy; D015394:Molecular Structure; D012116:Resins, Plant / Q000737:chemistry*; D012639:Seeds / Q000737:chemistry*; D012995:Solubility
chemical_list: D006027:Glycosides; D012116:Resins, Plant; D004986:Ether