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A Customizable Approach for the Enzymatic Production and Purification of Diterpenoid Natural Products
Published on: October 4, 2019
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Antibacterial Labdane Diterpenoids from Vitex vestita
Nina Corlay1, Marylin Lecsö-Bornet, Erell Leborgne1
1†Centre de Recherche de Gif, LabEx CEBA, Institut de Chimie des Substances Naturelles (ICSN), CNRS UPR 2301, 91198 Gif-sur-Yvette, France.
Journal of Natural Products
|June 3, 2015
Summary
Tropical plants yielded new labdane diterpenoids with significant antibacterial and cytotoxic activities. Vitex vestita compounds showed potent effects against Gram-positive bacteria and cancer cell lines, highlighting a key structural feature for activity.
Area of Science:
- Natural Products Chemistry
- Medicinal Chemistry
- Pharmacognosy
Background:
- In vitro screening of tropical plants identified species with notable antibacterial properties.
- Vitex vestita, a Malaysian plant, was selected for further investigation due to its promising activity.
Purpose of the Study:
- To isolate and characterize new labdane-type diterpenoids from Vitex vestita leaves.
- To evaluate the antibacterial and cytotoxic activities of the isolated compounds.
Main Methods:
- Bioassay-guided purification of plant extracts.
- Structure elucidation using 1D and 2D NMR and HRMS.
- Antibacterial assays against 46 Gram-positive strains.
- Cytotoxicity assays against HCT-116 and MRC5 cell lines.
Main Results:
- Six new labdane diterpenoids (vitexolides B, C, E, vitexolins A, B, and 12-epivitexolide A) and six known compounds were isolated.
- Vitexolide A demonstrated potent antibacterial activity (MIC 6-96 μM).
- Compounds 1-4 and 6-9 exhibited cytotoxic effects against cancer and normal cell lines.
Conclusions:
- The β-hydroxyalkyl-γ-hydroxybutenolide subunit is crucial for antibacterial efficacy.
- Vitex vestita is a valuable source of bioactive labdane diterpenoids with potential therapeutic applications.
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