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Sesquiterpenoids from Inula racemosa
1Key Laboratory of Chemistry of Northwestern Plant Resource and Key Laboratory for Natural Medicines of Gansu Province, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou, China.
Journal of Asian Natural Products Research
|May 31, 2011
Summary
Researchers identified nine sesquiterpenoids from Inula racemosa roots, including a novel nor-eudesmane derivative. Advanced spectroscopic techniques confirmed the structures of these compounds.
Area of Science:
- Phytochemistry
- Natural Product Chemistry
Background:
- Inula racemosa is a plant species known for its medicinal properties.
- Sesquiterpenoids are a diverse class of natural products with various biological activities.
Purpose of the Study:
- To investigate the phytochemical constituents of Inula racemosa roots.
- To isolate and characterize new and known sesquiterpenoids.
Main Methods:
- Extraction and isolation of compounds from Inula racemosa roots.
- Structure elucidation using 1D and 2D Nuclear Magnetic Resonance (NMR) spectroscopy.
- Confirmation of a specific compound's structure via single-crystal X-ray diffraction analysis.
Main Results:
- Nine sesquiterpenoids were isolated from the plant roots.
- A new nor-eudesmane-type sesquiterpenoid, 11,12,13-trinoreudesm-5-en-7β,8α-diol, was identified.
- The structures of all isolated compounds were determined using spectroscopic data.
Conclusions:
- The phytochemical analysis of Inula racemosa roots has led to the discovery of a new sesquiterpenoid.
- The study expands the knowledge of sesquiterpenoids found in this plant species.
