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Applications of Liquid-Chromatography Tandem Mass Spectrometry in Natural Products Research: Tropane Alkaloids as a Case Study
Published on: March 8, 2024
Lycopodium alkaloids from Huperzia serrata
Yan-Fang Yang1, Shi-Jin Qu, Kai Xiao
1Department of Natural Medicinal Chemistry, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, China.
Journal of Asian Natural Products Research
|November 10, 2010
Summary
Researchers discovered a new Huperzia serrata alkaloid, 6α-hydroxy-5,15-oxide-lycopodane. Another alkaloid, 12-deoxyhuperzine O, showed N-methyl-d-aspartate receptor antagonist activity.
Area of Science:
- Natural Product Chemistry
- Pharmacology
Background:
- Huperzia serrata is a source of bioactive Lycopodium alkaloids.
- Alkaloids from this plant have shown various pharmacological activities.
Purpose of the Study:
- To isolate and characterize novel alkaloids from Huperzia serrata.
- To investigate the N-methyl-d-aspartate receptor antagonist activity of isolated compounds.
Main Methods:
- Isolation of alkaloids using chromatographic techniques.
- Structure elucidation via spectroscopic methods (NMR, MS).
- In vitro assay for N-methyl-d-aspartate receptor antagonism.
Main Results:
- A new lycopodane-type alkaloid, 6α-hydroxy-5,15-oxide-lycopodane (1), was identified.
- Seven known alkaloids were also isolated.
- 12-Deoxyhuperzine O (2) was reported as a natural product for the first time.
- Compound 2 exhibited N-methyl-d-aspartate receptor antagonist activity with an IC(50) of 0.92 μM.
Conclusions:
- Huperzia serrata yielded a novel lycopodane alkaloid and several known ones.
- 12-Deoxyhuperzine O demonstrates potential as a neuropharmacological agent.
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