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Updated: Feb 8, 2026
A Simple Dry Sectioning Method for Obtaining Whole-Seed-Sized Resin Section and Its Applications
Published on: January 23, 2021
Components of ether-insoluble resin glycoside (convolvulin) from seeds of Quamoclit pennata
Masateru Ono1, Yoko Takagi-Taki, Fumiko Honda-Yamada
1School of Agriculture, Tokai University, 5435 Minamiaso, Aso, Kumamoto 869-1404, Japan. mono@agri.u-tokai.ac.jp
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.
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