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A Customizable Approach for the Enzymatic Production and Purification of Diterpenoid Natural Products
Published on: October 4, 2019
Leonurenones A-C: Labdane diterpenes from Leonotis leonurus.
Fang He1, Charlotte Lindqvist, Wayne W Harding
1Department of Chemistry, Hunter College, City University of New York, NY 10065, USA.
Phytochemistry
|August 16, 2012
Summary
Researchers identified novel labdanes, leonurenones A-C, from Leonotis leonurus. These compounds, featuring a unique enone structure, were tested for activity at the GABA A neuroreceptor site.
Area of Science:
- Phytochemistry
- Natural Products Chemistry
- Pharmacology
Background:
- Leonotis leonurus is a plant with a history of traditional use.
- Labdanes are a class of diterpenoids with diverse biological activities.
- The GABA A receptor is a key target for neurological drugs.
Purpose of the Study:
- To isolate and characterize chemical constituents from Leonotis leonurus.
- To investigate the structural features of novel labdanes.
- To evaluate the potential of isolated compounds at the GABA A neuroreceptor.
Main Methods:
- Phytochemical analysis including isolation and structural elucidation.
- Genetic methods for plant material identification.
- Competitive inhibition assay for GABA A receptor binding.
Main Results:
- Three labdanes, leonurenones A-C, were isolated and identified.
- Leonurenones A-C possess an uncommon α,β-unsaturated enone moiety in ring B.
- Leonurenones A and B showed activity in the GABA A neuroreceptor inhibition assay.
Conclusions:
- Leonotis leonurus is a source of structurally unique labdanes.
- The leonurenones represent a novel class of labdane derivatives.
- Further investigation into the pharmacological properties of leonurenones is warranted.
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