Lucidone A
[CAS 1446750-73-7]

Identification

• Classification: Organic raw materials >> Ketone compound
• Name: Lucidone A
• Synonyms: (5R,7S,10S,13R,14R,15S,17S)-17-acetyl-7,15-dihydroxy-4,4,10,13,14-pentamethyl-2,5,6,7,12,15,16,17-octahydro-1H-cyclopenta[a]phenanthrene-3,11-dione
• Molecular Formula: C₂₄H₃₄O₅
• Molecular Weight: 402.52
• CAS Registry Number: 1446750-73-7
• SMILES: CC(=O)[C@H]1C[C@@H]([C@@]2([C@@]1(CC(=O)C3=C2[C@H](C[C@@H]4[C@@]3(CCC(=O)C4(C)C)C)O)C)C)O

Properties

• Density: 1.2±0.1 g/cm³ Calc.^*
• Boiling point: 570.8±50.0 °C 760 mmHg (Calc.)^*
• Flash point: 313.1±26.6 °C (Calc.)^*
• Index of refraction: 1.568 (Calc.)^*

^* Calculated using Advanced Chemistry Development (ACD/Labs) Software.

Discovery and Applications

Lucidone A is a naturally occurring terpenoid compound isolated from fungi of the genus Ganoderma, particularly species such as Ganoderma lucidum. It belongs to the broader class of lanostane-type triterpenoids, which are characteristic secondary metabolites of these medicinal fungi. The identification of lucidone A emerged from systematic phytochemical investigations aimed at characterizing the diverse triterpenoid constituents present in Ganoderma fruiting bodies and cultured mycelia.

The discovery of lucidone A is associated with the expansion of natural products research on Ganoderma species, which began to intensify in the latter half of the twentieth century. Researchers used solvent extraction followed by chromatographic separation techniques to isolate individual compounds from complex fungal extracts. Structural elucidation was carried out using spectroscopic methods such as nuclear magnetic resonance spectroscopy and mass spectrometry, which allowed scientists to determine the carbon skeleton and functional group arrangement characteristic of lucidone A.

Lucidone A is structurally related to other lanostane triterpenoids found in Ganoderma species. These compounds are biosynthesized through the mevalonate pathway, a fundamental metabolic route responsible for the production of isoprenoid units. In fungi, this pathway leads to the formation of squalene, which is subsequently cyclized to produce lanosterol. Lanosterol serves as a precursor for a wide range of triterpenoid metabolites, including structurally diverse oxidized derivatives such as lucidone A.

The compound contributes to the chemical diversity of Ganoderma triterpenes, which are known for extensive oxidation patterns and functional group variations on a common tetracyclic skeleton. These structural modifications arise from enzymatic processes such as hydroxylation, oxidation, and rearrangement reactions. Lucidone A represents one of the many oxygenated derivatives identified in this class, highlighting the metabolic complexity of Ganoderma species.

Lucidone A has been primarily studied in the context of natural products chemistry rather than large-scale industrial applications. Its isolation and characterization have contributed to the broader understanding of Ganoderma triterpenoid profiles and have supported chemotaxonomic studies aimed at differentiating species and evaluating chemical variation among fungal samples. The presence or relative abundance of specific triterpenoids, including lucidone A, can provide useful information in the chemical profiling of Ganoderma materials.

In analytical chemistry, compounds such as lucidone A serve as reference points for chromatographic and spectroscopic studies of fungal extracts. High-performance liquid chromatography and related techniques are commonly used to separate and identify individual triterpenoids in complex mixtures. The availability of characterized compounds enables researchers to compare retention times and spectral data, improving the reliability of phytochemical analysis.

Lucidone A has also been included in broader biological investigations of Ganoderma-derived compounds. Although many studies focus on crude extracts or mixtures of triterpenoids, isolated compounds are important for understanding structure–activity relationships within this chemical class. By examining purified constituents such as lucidone A, researchers can better assess how specific structural features of lanostane triterpenoids relate to observed biological effects in experimental systems.

The significance of lucidone A therefore lies primarily in its role as a characterized natural product contributing to the chemical understanding of Ganoderma species. It is part of a large and structurally diverse group of fungal triterpenoids that have been extensively studied in natural products chemistry. Through its identification and characterization, lucidone A has helped expand the knowledge of fungal secondary metabolite diversity and supported analytical and chemotaxonomic research in the field of medicinal mushroom chemistry.