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 Aranorosin. Representative 13C NMR (125 MHz) spectrum supporting structural assignment of Aranorosin.
Source Organism
Gymnascella sp.
Summary
Aranorosin is a fungal antibiotic that exhibits antifungal activity and modulates Bcl-2–regulated apoptotic signaling.
Details
Aranorosin is a novel antibiotic isolated from the fermentation broth of Pseudoarachniotus roseus. Structurally, it contains a unique 1-oxaspiro[4,5]decane ring system. Initially characterized for its antifungal activity, aranorosin was later identified as an inhibitor of Bcl-2-regulated anti-apoptotic functions. It promotes mitochondrial outer membrane permeabilization, induces loss of mitochondrial membrane potential, activates caspase-9, and enhances apoptosis in Bcl-2-overexpressing cells. These findings position aranorosin as a natural product scaffold of interest for apoptosis-targeted anticancer research.