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 Globosuxanthone A. Representative 13C NMR (125 MHz) spectrum supporting structural assignment of Globosuxanthone A.
Source Organism
Fungi unknown
Summary
Globosuxanthone A is a fungal xanthone that induces tumor cell apoptosis and exhibits antifungal activity.
Details
Globosuxanthone A is a dihydroxanthenone-type xanthone polyketide originally isolated from Chaetomium globosum and later identified in other fungal sources. It exhibits strong cytotoxicity against multiple human solid tumor cell lines, causing disruption of the cell cycle with accumulation in G2/M or S phase and induction of classical apoptotic morphology. In antifungal assays, it shows inhibitory activity against phytopathogens including Fusarium graminearum, Fusarium solani, and Botrytis cinerea, as well as Candida albicans. Its structure and absolute configuration were confirmed by NMR and X-ray crystallographic analysis. Globosuxanthone A represents a bioactive fungal xanthone scaffold with dual anticancer and antifungal properties.