Two new sesquiterpenoids from Dictyophora indusiata

Area of Science:

• Natural Product Chemistry
• Pharmacology
• Mycology

Background:

• Dictyophora indusiata is a fungus known for its bioactive compounds.
• Sesquiterpenoids are a class of natural products with diverse biological activities.
• Inflammation is a complex biological response implicated in various diseases.

Purpose of the Study:

• To isolate and characterize new sesquiterpenoids from Dictyophora indusiata.
• To evaluate the anti-inflammatory potential of the isolated compounds.

Main Methods:

• Isolation of compounds using chromatographic techniques.
• Structure elucidation employing Nuclear Magnetic Resonance (NMR) and Electronic Circular Dichroism (ECD) spectroscopy.
• High-resolution electrospray ionization mass spectrometry (HRESIMS) for accurate mass determination.
• In vitro assays to measure inhibition of tumor necrosis factor-alpha (TNF-α) and nitric oxide (NO) secretion.

Main Results:

• Two new sesquiterpenoids, 9,10-dihydroxy-albaflavenone (1) and 5-hydroxy-albaflavenone (2), were successfully isolated and identified.
• Compounds 1 and 2 demonstrated significant anti-inflammatory activity.
• Both compounds inhibited the secretion of TNF-α and NO to varying extents, indicating their potential as anti-inflammatory agents.

Conclusions:

• Dictyophora indusiata is a source of novel sesquiterpenoids with anti-inflammatory effects.
• 9,10-dihydroxy-albaflavenone and 5-hydroxy-albaflavenone represent promising leads for the development of new anti-inflammatory therapies.
• Further research is warranted to explore the mechanisms of action and therapeutic potential of these compounds.