Chemical constituents of the leaves of Campylospermum elongatum
| Autor: | Anastasie E Tih, Raphael T Ghogomu, Savio S Elo-Manga, Alain Blond, Bernard Bodo |
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| Rok vydání: | 2016 |
| Předmět: |
Spectrophotometry
Infrared Stereochemistry Ochnaceae Amentoflavone 01 natural sciences General Biochemistry Genetics and Molecular Biology chemistry.chemical_compound Spectroscopy Fourier Transform Infrared Nuclear Magnetic Resonance Biomolecular Flavonoids chemistry.chemical_classification Ethanol Molecular Structure biology 010405 organic chemistry Hydrolysis Methanol Glycoside Biflavonoid Flavones biology.organism_classification 0104 chemical sciences Plant Leaves 010404 medicinal & biomolecular chemistry Spectrometry Fluorescence chemistry Chemotaxonomy Chemical constituents Campylospermum Solvents Two-dimensional nuclear magnetic resonance spectroscopy |
| Zdroj: | Zeitschrift für Naturforschung C. 72:71-75 |
| ISSN: | 1865-7125 0939-5075 |
| DOI: | 10.1515/znc-2015-0260 |
| Popis: | The leaves of Campylospermum elongatum have furnished the cyano-glycoside (lithospermoside), nine isomeric biflavonoid derivatives among which five are I3–II6 linked (robustaflavone; 4′-O-methyl robustaflavone; 4′,4″′-di-O-methyl robustaflavone; 7,4′,4″-tri-O-methyl robustaflavone; 4′,7″-di-O-methyl robustaflavone) and four I3–II8 linked (amentoflavone; 7-O-methyl amentoflavone; 7,7″-di-O-methyl amentoflavone; 7, 4′,7″-tri-O-methyl amentoflavone) and a flavone glycoside, 4″-O-methyl-7-O-β-d-galactosylapigenin. All structures were established from a complete spectroscopic analysis (MS, IR, 1D, and 2D NMR, including HSQC, HMBC, and NOESY) as well as by comparing the obtained spectroscopic data with literature. This is the first report on the characterization of 4′-O-methyl-7-O-β-d-galactosylapigenin from the genus campylospermum and thus has important chemotaxonomic implications. |
| Databáze: | OpenAIRE |
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