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Updated: Jul 15, 2026
09:50
Biosynthesis of a Flavonol from a Flavanone by Establishing a One-pot Bienzymatic Cascade
Published on: August 14, 2019
Dihydroflavanonols from Cedrus deodara, A (13)C NMR study
P K Agrawal1, S K Agarwal, R P Rastogi
1Central Drug Research Institute, Lucknow, India.
Planta Medica
|September 1, 1981
Summary
High-resolution carbon-13 nuclear magnetic resonance (13C NMR) spectroscopy precisely located methyl groups in the 5,7-dihydroxyflavanonol nucleus of taxifolin and related compounds. This study clarified the molecular structure and substitution patterns.
Area of Science:
- Organic Chemistry
- Natural Products Chemistry
- Spectroscopy
Background:
- Flavonoids, such as taxifolin, cedodarin, and cedrin, are natural products with diverse biological activities.
- Understanding the precise structure of these compounds is crucial for their further investigation and application.
- Methylation patterns significantly influence the properties of natural products.
Purpose of the Study:
- To unambiguously determine the position of methyl groups within the 5,7-dihydroxyflavanonol nucleus of taxifolin, cedodarin, cedrin, and their methyl ethers.
- To gain further insights into the substitution patterns of these flavanonols using advanced NMR techniques.
Main Methods:
- High-resolution carbon-13 nuclear magnetic resonance ((13)C NMR) spectroscopy was employed.
- Analysis of spectral data allowed for detailed structural elucidation.
Main Results:
- The study successfully assigned the location of methyl groups in the 5,7-dihydroxyflavanonol core structure.
- Valuable information regarding the overall substitution patterns of the studied molecules was obtained.
Conclusions:
- High-resolution (13)C NMR is a powerful tool for the precise structural characterization of flavanonols.
- The findings clarify the molecular structures of taxifolin, cedodarin, cedrin, and their derivatives, aiding future research.
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