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Seven novel compounds, namely peniresorcinosides A-E ( 1 - 5 ), penidifarnesylin A ( 6 ), and penipyridinone A ( 7 ), together with the 11 known ones 8 - 17 , were isolated from a culture of the marine-associated fungus Penicillium sp. ZZ1750 in rice medium. The structures of the new compounds were established based on their high-resolution electrospray ionization mass spectroscopy (HRESIMS) data, extensive nuclear magnetic resonance (NMR) spectroscopic analyses, chemical degradation, Mosher's method, 13 C-NMR calculations, electronic circular dichroism (ECD) calculations, and single crystal X-ray diffraction. Peniresorcinosides A ( 1 ) and B ( 2 ) are rare glycosylated alkylresorcinols and exhibited potent antiglioma activity, with IC 50 values of 4.0 and 5.6 µM for U87MG cells and 14.1 and 9.8 µM for U251 cells, respectively.

New Antiproliferative Compounds against Glioma Cells from the Marine-Sourced Fungus Penicillium sp. ZZ1750