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[A new terpenoid from Ganoderma lucidum].

Chao Liu¹, Bao-ming Li¹, Jie Kang¹

¹State Key Laboratory of Bioactive Substance and Function of Natural Medicines, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, China.

Yao Xue Xue Bao = Acta Pharmaceutica Sinica

|December 24, 2013

Summary

A novel terpenoid, lucidone D, was identified from Ganoderma lucidum. Its chemical structure was elucidated using advanced spectroscopic techniques, expanding knowledge of fungal metabolites.

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Area of Science:

Natural Product Chemistry
Phytochemistry
Mycology

Background:

Ganoderma lucidum is a medicinal mushroom known for its diverse bioactive compounds.
Terpenoids are a large class of organic compounds with significant pharmacological potential.
Continued exploration of fungal secondary metabolites is crucial for discovering novel chemical entities.

Purpose of the Study:

To isolate and characterize new chemical constituents from Ganoderma lucidum.
To determine the precise chemical structure of the newly discovered terpenoid.
To contribute to the understanding of the chemical diversity within Ganoderma species.

Main Methods:

Isolation of compounds using chromatographic techniques.
Structure elucidation of the isolated compound (1) employing 1D and 2D-Nuclear Magnetic Resonance (NMR) spectroscopy.
Analysis of spectral data to confirm the proposed chemical structure.

Main Results:

A new terpenoid, designated lucidone D (1), was successfully isolated from the Ganoderma lucidum extract.
The structure of lucidone D was determined to be 7beta, 15alpha-dihydroxy-4, 4, 14alpha-trimethyl-3, 11, 20-trioxo-5alpha-pregn-8-en.
Comprehensive NMR spectral analysis provided unambiguous evidence for the assigned structure.

Conclusions:

Lucidone D represents a novel terpenoid isolated from Ganoderma lucidum.
The detailed structural characterization provides a basis for future studies on its biological activities.
This finding highlights the potential of Ganoderma lucidum as a source of unique natural products.