Alkylated benzoquinone derivatives from Maesa lanceolata
| Autor: | Ilias Muhammad, Jaber S. Mossa, Ahmed F. Ramadan, Humayun H. Mirza, Charles D. Hufford, Farouk S. El-Feraly |
|---|---|
| Rok vydání: | 1999 |
| Předmět: |
Maesa lanceolata
ved/biology Stereochemistry ved/biology.organism_classification_rank.species Ether Plant Science General Medicine Horticulture Carbon-13 NMR Alkylation Biochemistry Benzoquinone chemistry.chemical_compound chemistry Molecule Derivatization Molecular Biology Two-dimensional nuclear magnetic resonance spectroscopy |
| Zdroj: | Phytochemistry. 50:1063-1068 |
| ISSN: | 0031-9422 |
| Popis: | Five new alkylated benzoquinones were isolated as methyl ether derivatives from a complex mixture containing alkylated hydroxy benzoquinones, obtained from the fruits of Maesa lanceolata . The structures of the benzoquinones, named, 2-acetoxy-5-methoxy-6-methyl-3-tridecyl-1, 4-benzoquinone, 2-methoxy-5-acetoxy-6-methyl-3-tridecyl-1, 4-benzoquinone, 2-acetoxy-5-methoxy-6-methyl-3- [ ( z )-10′-pentadecenyl]-1,4-benzoquinone, 2-methoxy-5-acetoxy-6-methyl-3- [ ( z )-10′-pentadecenyl-1, 4-benzoquinone and 2,5-di- methoxy-6-methyl-3-tridecyl-1,4-benzoquinone, were based on 1 H and 13 C NMR data, mainly 2D NMR experiments, including 1 H– 13 C HMBC correlations, as well as chemical derivatization. |
| Databáze: | OpenAIRE |
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