Triterpene Saponins from the Aerial Parts of Trifolium medium L. var. sarosiense
| Autor: | Mariusz Kowalczyk, Łukasz Pecio, Wieslaw Oleszek, Anna Stochmal, Milena Masullo, Sylwia Pawelec, Francisco A. Macías, Sonia Piacente, Ana M. Simonet, Dariusz Jedrejek |
|---|---|
| Přispěvatelé: | Química Orgánica |
| Rok vydání: | 2013 |
| Předmět: |
0106 biological sciences
Stereochemistry Saponin Biology Trifolium medium 01 natural sciences chemistry.chemical_compound Triterpene Genus zigzag clover Oleanane triterpene saponis chemistry.chemical_classification Molecular Structure Plant Stems 010405 organic chemistry Plant Extracts Glycoside General Chemistry Saponins biology.organism_classification Triterpenes 0104 chemical sciences Plant Leaves Aglycone chemistry Trifolium trifolium medium var. sarosiense General Agricultural and Biological Sciences Two-dimensional nuclear magnetic resonance spectroscopy 010606 plant biology & botany |
| Zdroj: | J. Agric. Food Chem. 2013, 61, 9789−9796 RODIN. Repositorio de Objetos de Docencia e Investigación de la Universidad de Cádiz instname |
| Popis: | Seven previously unreported triterpene glycosides (1−7) were isolated from methanol extract of the aerial parts of Trifolium medium var. sarosiense (zigzag clover). Their structures were established by the extensive use of 1D and 2D NMR experiments along with ESI-MS and HRMS analyses. Compounds 1−7 are oleanane derivatives characterized by the presence of a keto group at C-22 of an aglycone and a primary alcoholic function at C-24 and differing functions at C-30. Among these, compounds 1−3 and 6 showed a secondary alcoholic function at C-11, which is methoxylated in compounds 4 and 7. Compound 5 was shown to possess a known aglycone, wistariasapogenol A; however, it is described here for the first time as a saponin constituent of the Trifolium genus. Some aspects of taxonomic classification of zigzag clover are also discussed. |
| Databáze: | OpenAIRE |
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