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Updated: Feb 6, 2026
A Customizable Approach for the Enzymatic Production and Purification of Diterpenoid Natural Products
Published on: October 4, 2019
Six new diterpenoids from Croton laevigatus
Mo-Nan Liu1,2, Meng-Meng Zhang1,2, Jing-Ya Li1,2
1a State Key Laboratory of Drug Research , Shanghai Institute of Materia Medica, Chinese Academy of Sciences , Shanghai 201203 , China.
Researchers discovered six new ent-labdane diterpenoids from Croton laevigatus. Two compounds demonstrated inhibitory activity against protein tyrosine phosphatase 1B (PTP1B).
Area of Science:
- Natural Product Chemistry
- Medicinal Chemistry
- Pharmacology
Background:
- Croton laevigatus is a plant species known for its diverse chemical constituents.
- Diterpenoids are a class of natural products with a wide range of biological activities.
- Protein tyrosine phosphatase 1B (PTP1B) is a key target in the development of treatments for diabetes and obesity.
Purpose of the Study:
- To isolate and characterize new ent-labdane-type diterpenoids from Croton laevigatus.
- To evaluate the inhibitory activity of the isolated compounds against PTP1B.
Main Methods:
- Phytochemical investigation of Croton laevigatus twigs and leaves.
- Structure elucidation using extensive spectroscopic methods (e.g., NMR, MS).
- In vitro enzymatic assay to determine PTP1B inhibitory activity.
Main Results:
- Six new ent-labdane-type diterpenoids (compounds 1-6) were identified.
- One known compound was also isolated.
- Compounds 2 and 7 exhibited inhibitory activity against PTP1B with IC50 values of 4.11 μg/ml and 8.33 μg/ml, respectively.
Conclusions:
- The study expands the knowledge of diterpenoids from Croton laevigatus.
- Compounds 2 and 7 show potential as PTP1B inhibitors, warranting further investigation for therapeutic applications.
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