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A Customizable Approach for the Enzymatic Production and Purification of Diterpenoid Natural Products
Published on: October 4, 2019
Phyllocladane diterpenes from Anisomeles heyneana
Roshan R Kulkarni1, Ketaki Shurpali, Rupesh L Gawde
1Divison of Organic Chemistry, National Chemical Laboratory, Pune 411008, India.
Journal of Asian Natural Products Research
|November 20, 2012
Summary
A new phyllocladane diterpene was discovered in Anisomeles heyneana, showing potential anti-mycobacterial activity against Mycobacterium tuberculosis. This compound also demonstrated inhibitory effects on Thp-1 cell lines.
Area of Science:
- Phytochemistry
- Natural Products Chemistry
- Medicinal Chemistry
Background:
- Anisomeles heyneana is a plant species with potential medicinal properties.
- Diterpenes are a class of natural compounds with diverse biological activities.
- Exploring plant-derived compounds for therapeutic applications is crucial.
Purpose of the Study:
- To isolate and characterize new compounds from the aerial parts of Anisomeles heyneana.
- To investigate the anti-mycobacterial activity of isolated compounds against Mycobacterium tuberculosis.
- To evaluate the cytotoxic effects of isolated compounds on Thp-1 cell lines.
Main Methods:
- Isolation of compounds using chromatographic techniques.
- Structure elucidation of new compounds employing 1D and 2D NMR (HSQC, HMBC, NOESY) and X-ray crystallography.
- In vitro assays to determine anti-mycobacterial activity (IC50) and Thp-1 cell line inhibition.
Main Results:
- A new phyllocladane diterpene, phyllocladan-16α,17-dihydroxy-19-oic acid (1), was isolated and characterized.
- Ovatodiolide (3) exhibited significant anti-mycobacterial activity with an IC50 of 6.53 μg/ml.
- Compounds 1 and 3 showed notable inhibition of Thp-1 cell lines at 59.02% and 96.4%, respectively.
Conclusions:
- This study reports the first isolation of phyllocladane diterpenes from the genus Anisomeles.
- Compound 3 (ovatodiolide) demonstrates promising anti-mycobacterial properties.
- Isolated compounds possess potential for further development as therapeutic agents.
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