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Circular dichroism calculation for natural products
Alfarius Eko Nugroho1, Hiroshi Morita
1Faculty of Pharmaceutical Sciences, Hoshi University, Ebara 2-4-41 Shinagawa-ku, Tokyo, 142-8501, Japan.
Determining the absolute configuration of chiral natural products is challenging. Electronic circular dichroism (ECD) calculations using time-dependent density functional theory (TDDFT) offer a powerful method for this structure elucidation.
Area of Science:
- Organic Chemistry
- Computational Chemistry
- Spectroscopy
Background:
- Absolute configuration (AC) determination is crucial for natural product structure elucidation.
- Chiral molecules with suitable chromophores can be analyzed using electronic circular dichroism (ECD).
Purpose of the Study:
- To review recent applications of time-dependent density functional theory (TDDFT) in ECD calculations for AC determination.
- To highlight the utility of TDDFT-ECD spectroscopy in natural product chemistry.
Main Methods:
- Utilizing time-dependent density functional theory (TDDFT) for electronic circular dichroism (ECD) spectral calculations.
- Comparing calculated ECD spectra with experimental data for AC assignment.
Main Results:
- TDDFT-based ECD calculations provide a reliable method for determining the absolute configuration of natural products.
- Several case studies demonstrate the successful application of this computational approach.
Conclusions:
- TDDFT-calculated ECD spectra are a valuable tool for the absolute configuration determination of natural products.
- This computational strategy aids in the complex structure elucidation of novel chiral compounds.
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