Two minor diterpene glycosides from the leaves of Stevia rebaudiana
| Autor: | Ulla Mocek, Dennis J. Milanowski, Venkata Sai Prakash Chaturvedula, Indra Prakash, Joshua Rhea |
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| Rok vydání: | 2011 |
| Předmět: |
Pharmacology
chemistry.chemical_classification Magnetic Resonance Spectroscopy biology Stereochemistry Glycoside Steviol Plant Science General Medicine Nuclear magnetic resonance spectroscopy Asteraceae biology.organism_classification Plant Leaves chemistry.chemical_compound Stevia rebaudiana Complementary and alternative medicine chemistry Drug Discovery Stevia Stevioside Glycosides Diterpene Diterpenes Two-dimensional nuclear magnetic resonance spectroscopy |
| Zdroj: | Natural product communications. 6(2) |
| ISSN: | 1934-578X |
| Popis: | Two new new diterpene glycosides, 13-[(2-O-(6-O-beta-D-glucopyranosyl)-beta-D-glucopyranosyl-beta-D-glucopyranosyl)oxy] kaur-16-en-18-oic acid beta-D-glucopyranosyl ester (1) and 13-[(2-O-beta-D-glucopyranosyl-3-O-beta-D-fructofuranosyl-beta-D-glucopyranosyl)oxy] kaur-16-en-18-oic acid beta-D-glucopyranosyl ester (2) were isolated from the leaves of Stevia rebaudiana, along with the known steviol glycosides stevioside, rebaudiosides A-F and dulcoside A. The structures of the two new compounds were established on the basis of extensive 2D NMR (COSY, HSQC, and HMBC), MS and chemical studies. |
| Databáze: | OpenAIRE |
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