Penicisulfuranols A–F, Alkaloids from the Mangrove Endophytic Fungus Penicillium janthinellum HDN13-309

Journal of Natural Products
2017.0

Abstract

Six new epipolythiodioxopiperazine (ETP) alkaloids, penicisulfuranols A-F (1-6), were isolated from the mangrove endophytic fungus Penicillium janthinellum HDN13-309. All structures including absolute configurations were elucidated on the basis of comprehensive spectroscopic data and ECD calculations. They belong to the unusual family of ETPs containing sulfur atoms on both α- and β-positions of amino acid residues and a rare 1,2-oxazadecaline core moiety. In addition, compounds 1-6 also possess a rare spiro-furan ring and 1-3 showed cytotoxicity with IC

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