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International Journal of Medicinal Mushrooms
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ISSN Imprimer: 1521-9437
ISSN En ligne: 1940-4344

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International Journal of Medicinal Mushrooms

DOI: 10.1615/IntJMedMushrooms.2018026007
pages 507-516

Lanostane-Type Triterpenes and Abietane-Type Diterpene from the Sclerotia of Chaga Medicinal Mushroom, Inonotus obliquus (Agaricomycetes), and Their Biological Activities

Kutaiba Ibrahin Alzand
Department of Biology, University of Sulaimani, Sulaimani, Iraq
Sabri Ünal
Department of Forest Engineering, Kastamonu University, Kastamonu, Turkey
Mansor S. Mostafa Boufaris
Department of Forest Engineering, Kastamonu University, Kastamonu, Turkey


Three new lanostane-type triterpenes (compounds 1-3), 1 new abietane-type diterpene (compound 4), and 10 known compounds (5-14) were isolated from sclerotia of Inonotus obliquus. Their structures were elucidated through a combination of spectrometric techniques, including infrared, 1-dimensional, and 2-dimensional nuclear magnetic resonance and high-resolution electrospray mass spectrometry. In in vitro assays, compounds 2 and 4-12 showed hepatoprotective effects against D-galactosamine-induced damage in WB-F344 cells, with inhibitory effects from 35.4% to 83.8%. Compounds 3, 13, and 14 exhibited selective cytotoxicity against Bel-7402, A-549, or KB cell lines. Compounds 13 and 14 showed inhibitory effects against protein tyrosine kinases, with half-maximal inhibitory concentrations of 23.8 and 7.4 μmol/L, respectively.

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