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 Aspergillin PZ. Representative 13C NMR (125 MHz) spectrum supporting structural assignment of Aspergillin PZ.
Source Organism
Aspergillus sp.
Summary
Aspergillin PZ is an isoindole alkaloid from Aspergillus awamori featuring a distinctive oxabicyclic core.
Details
Aspergillin PZ is a fungal isoindole alkaloid isolated from Aspergillus awamori and characterized by a rare oxabicyclic ring system confirmed by X-ray crystallography. It was found to moderately induce morphological deformation of Pyricularia oryzae conidia. The structural complexity of aspergillin PZ has attracted synthetic interest, and its total synthesis was achieved via a 2-oxonia[3,3]sigmatropic rearrangement/aldol cascade mechanism. Although synthetic material showed limited cytotoxic activity, aspergillin PZ remains a notable example of a structurally remarkable fungal alkaloid.