Eudesmane-type and agarospirane-type sesquiterpenes from agarwood of Aquilaria agallocha
| Autor: | Li Yang, Yingbo Yang, Siyu Zhang, Chunge Li, Yanqiao Xie, Zhengtao Wang, Leixin Song, Zhu-Zhen Han, Hong Xu |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
Circular dichroism
Stereochemistry Positive control Plant Science Horticulture engineering.material Mass spectrometry Biochemistry Mice Aquilaria Animals Sesquiterpenes Eudesmane No production Molecular Biology Quantum chemical biology Molecular Structure Chemistry General Medicine Agarwood biology.organism_classification RAW 264.7 Cells Thymelaeaceae engineering Sesquiterpenes |
| Zdroj: | Phytochemistry. 192 |
| ISSN: | 1873-3700 |
| Popis: | Eleven previously unreported sesquiterpenes, including nine eudesmane-type (agalleudesmanol A-I) and two agarospirane-type sesquiterpenes (agarospiranic aldehyde A-B), together with eight known sesquiterpenes, were isolated from the agarwood of Aquilaria agallocha Roxb. The structures were established based on extensive spectroscopic analyses, including infrared (IR), high-resolution electrospray ionisation mass spectrometry (HRESIMS), nuclear magnetic resonance (NMR), X-ray diffraction, quantum chemical calculations based on empirical electronic circular dichroism (ECD) data, and DP4+ probability analysis. The bioactivity of these undescribed compounds against lipopolysaccharide (LPS)-induced NO production in RAW 264.7 cells was evaluated. Compounds 1 and 2 exhibited significant anti-inflammatory activities, with IC50 values of 5.46–14.07 μM (aminoguanidine as positive control, IC50 20.33 ± 1.08 μM). |
| Databáze: | OpenAIRE |
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