A unique acyclic sesquiterpene-flavanone adduct and a new cyclic diarylheptanoid from Alpinia katsumadai
| Autor: | Heng-Yuan Li, Hou-Li Jiang, Xiao-Yun Dong, Chang-Shui Yang |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
Circular dichroism
biology 010405 organic chemistry Chemistry Stereochemistry Diarylheptanoid Alpinia Plant Science Sesquiterpene biology.organism_classification 01 natural sciences Biochemistry 0104 chemical sciences Adduct 010404 medicinal & biomolecular chemistry chemistry.chemical_compound Rhodomollein Agronomy and Crop Science Flavanone Two-dimensional nuclear magnetic resonance spectroscopy Biotechnology |
| Zdroj: | Phytochemistry Letters. 30:190-193 |
| ISSN: | 1874-3900 |
| DOI: | 10.1016/j.phytol.2019.02.022 |
| Popis: | Two new compounds, sumadain D (1), and (3S,5S,6R,7S)-5,6-dihydroxy-1,7-diphenyl-methylcentrolobine (2), together with three known compounds, (lR,4S, 6R)1,4-dihydroxy-menthene (3), rhodomollein XI (4) and β-daucosterol (5), were isolated from the seeds of Alpinia katsumadai. The structures of compounds 1 and 2 were elucidated on the basis of spectroscopic techniques (UV, IR, MS, and 1D and 2D NMR), and the absolute configurations were established by comparing experimental and circular dichroism (CD) spectra. Compounds (3–5) were isolated for the first time from this plant. Compound 1 was a unique acyclic sesquiterpene–flavanone adduct, and compound 2 was a new cyclic diarylheptanoid. |
| Databáze: | OpenAIRE |
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