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 Cyclopenol. Representative 13C NMR (125 MHz) spectrum supporting structural assignment of Cyclopenol.
Source Organism
Penicillium sp.
Summary
Cyclopenol is a benzodiazepine alkaloid that suppresses NF-κB–mediated inflammatory signaling.
Details
Cyclopenol is a benzodiazepine-type alkaloid produced by Penicillium species, including marine and mangrove-derived strains. It has been shown to inhibit LPS-induced nitric oxide production and suppress IL-6 and iNOS expression through inhibition of upstream NF-κB activation. Structural studies reveal a 2,5-dioxopiperazine-related scaffold typical of cyclopenin-cyclopenol metabolites. Cyclopenol is used as a chemical probe to study inflammatory signaling and fungal benzodiazepine biosynthesis.