Representative LC/UV chromatogram under typical analytical conditions (C18 column; mobile phase: 5–100% ACN / H2O (0.05% H3PO4), linear gradient 20 min; flow rate: 0.2 mL/min; detection: 210 nm).
NMR Spectral Data
Representative 1H NMR (500 MHz) spectrum confirming the structure of Chaetoglobosine A. Representative 13C NMR (125 MHz) spectrum supporting structural assignment of Chaetoglobosine A.
Source Organism
Chaetomium sp.
Summary
Chaetoglobosine A is a cytochalasan that disrupts actin dynamics and exhibits antifungal and cytotoxic activity.
Details
Chaetoglobosin A is a cytochalasan-type secondary metabolite produced by Chaetomium globosum via a PKS-NRPS hybrid biosynthetic pathway. Structurally related to cytochalasins, it disrupts actin polymerization and exhibits potent antifungal, antiparasitic, and antitumor activities. Genetic studies have shown that pathway-specific regulators and transporters strongly influence chaetoglobosin A biosynthesis and secretion. It contributes significantly to the biocontrol activity of Chaetomium strains against plant pathogens and has been investigated for agricultural and biomedical applications. Toxicological studies demonstrate cytotoxic effects consistent with actin-disrupting compounds.