Constituents of the seeds of Swietenia mahagoni Jacq. II. Structures of swietemahonin A, B, C, D, E, F, and G and swietemahonolide
| Autor: | Shigetoshi Kadota, Lamek Marpaung, Hisao Ekimoto, Tohru Kikuchi |
|---|---|
| Rok vydání: | 1990 |
| Předmět: |
Meliaceae
biology Stereochemistry Chemistry Chemical structure Analytical chemistry Infrared spectroscopy General Chemistry General Medicine biology.organism_classification Terpenoid Drug Discovery Swietenia Swietenia mahagoni Two-dimensional nuclear magnetic resonance spectroscopy Tetranortriterpenoid |
| Zdroj: | Chemical and Pharmaceutical Bulletin. 38:894-901 |
| ISSN: | 1347-5223 0009-2363 |
| Popis: | Eight new tetranortriterpenoids, swietemahonin A-G and swietemahonolide, were isolated from the cotyledons of seeds of Swietenia mahagoni. The structures 1-8 are proposed for these compounds, respectively, based mainly on detailed analyses of the proton and carbon-13 nuclear magnetic resonance(1H-and 13C-NMR)spectra by the use of two-dimensional NMR techniques(1H-1H chemical shift correlation spectroscopy (COSY), 1H-13C COSY, and 1H-13C long-range COSY. |
| Databáze: | OpenAIRE |
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