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Asperginols A and B, Diterpene Pyrones, from an Aspergillus sp. and the Structure Revision of Previously Reported Analogues
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    Asperginols A and B, Diterpene Pyrones, from an Aspergillus sp. and the Structure Revision of Previously Reported Analogues
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    • Amjad Ayad Qatran Al-Khdhairawi*
      Amjad Ayad Qatran Al-Khdhairawi
      School of Pharmacy, Faculty of Health & Medical Sciences, Taylor’s University Lakeside Campus, 47500 Subang Jaya, Selangor, Malaysia
      *Email: [email protected], [email protected]
    • Yun-Yee Low
      Yun-Yee Low
      Department of Chemistry, Faculty of Science, University of Malaya, 50603 Kuala Lumpur, Malaysia
      More by Yun-Yee Low
    • Nurhuda Manshoor
      Nurhuda Manshoor
      Atta-ur-Rahman Institute for Natural Product Discovery (AuRIns), Universiti Teknologi MARA (UiTM) Selangor Branch, 42300 Bandar Puncak Alam, Selangor, Malaysia
    • Aditya Arya
      Aditya Arya
      Department of Pharmacology and Therapeutics, Faculty of Medicine, Dentistry and Health Sciences, University of Melbourne, Parkville, VIC 3010, Australia
      Department of Pharmacology and Therapeutics, School of Medicine, Faculty of Health and Medical Sciences, Taylor’s University, 47500 Subang Jaya, Malaysia
      More by Aditya Arya
    • Maciej Jelecki
      Maciej Jelecki
      Faculty of Chemistry, Adam Mickiewicz University, Uniwersytetu Poznańskiego 8, 61-614 Poznań, Poland
    • Mohammed Abdullah Alshawsh
      Mohammed Abdullah Alshawsh
      Department of Pharmacology, Faculty of Medicine, University of Malaya, 50603 Kuala Lumpur, Malaysia
    • Sareh Kamran
      Sareh Kamran
      Department of Pharmacology, Faculty of Medicine, University of Malaya, 50603 Kuala Lumpur, Malaysia
      More by Sareh Kamran
    • Rasha Saad Suliman
      Rasha Saad Suliman
      College of Pharmacy, King Saud bin Abdulaziz University for Health Sciences Ministry of National Guard Health Affairs, 3177 Riyadh, Saudi Arabia
    • Anis Low
      Anis Low
      Atta-ur-Rahman Institute for Natural Product Discovery (AuRIns), Universiti Teknologi MARA (UiTM) Selangor Branch, 42300 Bandar Puncak Alam, Selangor, Malaysia
      More by Anis Low
    • Narendra Babu Shivanagere Nagojappa
      Narendra Babu Shivanagere Nagojappa
      School of Pharmacy, Faculty of Health & Medical Sciences, Taylor’s University Lakeside Campus, 47500 Subang Jaya, Selangor, Malaysia
    • Jean-Frédéric F. Weber
      Jean-Frédéric F. Weber
      Atta-ur-Rahman Institute for Natural Product Discovery (AuRIns), Universiti Teknologi MARA (UiTM) Selangor Branch, 42300 Bandar Puncak Alam, Selangor, Malaysia
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    Journal of Natural Products

    Cite this: J. Nat. Prod. 2020, 83, 12, 3564–3570
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    https://doi.org/10.1021/acs.jnatprod.0c00618
    Published December 11, 2020
    Copyright © 2020 American Chemical Society and American Society of Pharmacognosy

    Abstract

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    Two new diterpene pyrones, asperginols A (1) and B (2), and four known analogues (36) were isolated from the endophytic fungus Aspergillus sp. HAB10R12. The structures and absolute configurations of these compounds were elucidated based on the analysis of their NMR, MS, and X-ray diffraction data. The revision of the absolute configurations at C-10, C-11, and C-14 of the known diterpene pyrones (36) and the determination of the configuration at the polyene side chain for compounds (46) were made using chemical methods and vibrational circular dichroism analysis. This group of diterpene pyrone compounds showed unique structural features including a 7/6/6 tricyclic diterpene moiety with an unusual trans–syn–trans stereochemical arrangement. Compound 6 showed moderate activity against the HT-29 colon cancer cell line.

    Copyright © 2020 American Chemical Society and American Society of Pharmacognosy

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    Supporting Information

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    The Supporting Information is available free of charge at https://pubs.acs.org/doi/10.1021/acs.jnatprod.0c00618.

    • X-ray crystallographic data for compound 1 (CIF)

    • X-ray crystallographic data for compound 2 (CIF)

    • 1H and 13C NMR spectra, X-ray experimental details, HRESIMS, UHPLC-UV chromatograms, IR spectra, and VCD spectra for compounds 16 (PDF)

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    Most electronic Supporting Information files are available without a subscription to ACS Web Editions. Such files may be downloaded by article for research use (if there is a public use license linked to the relevant article, that license may permit other uses). Permission may be obtained from ACS for other uses through requests via the RightsLink permission system: http://pubs.acs.org/page/copyright/permissions.html.

    Cited By

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    This article is cited by 7 publications.

    1. Christian Bailly. Discovery and current developments of isoindolinone-based fungal natural products. European Journal of Medicinal Chemistry Reports 2023, 9 , 100112. https://doi.org/10.1016/j.ejmcr.2023.100112
    2. Mostafa A. Asmaey. Unravelling the Secrets of α ‐Pyrones from Aspergillus Fungi: A Comprehensive Review of Their Natural Sources, Biosynthesis, and Biological Activities. Chemistry & Biodiversity 2023, 20 (11) https://doi.org/10.1002/cbdv.202301185
    3. Amjad Ayad Qatran Al-Khdhairawi, Jason Siau Ee Loo, Nurliana Abd Mutalib, Normala Abd Latip, Nurhuda Manshoor, Hamidah Abu Bakar, Narendra Babu Shivanagere Nagojappa, Jean-Frédéric Weber. Diketopiperazine and isoindolinone alkaloids from the endophytic fungus Aspergillus sp. HAB10R12. Phytochemistry 2023, 211 , 113685. https://doi.org/10.1016/j.phytochem.2023.113685
    4. Ahmed Hagag, Miada F. Abdelwahab, Adel M. Abd El-kader, Mostafa A. Fouad. The endophytic Aspergillus strains: A bountiful source of natural products. Journal of Applied Microbiology 2022, 132 (6) , 4150-4169. https://doi.org/10.1111/jam.15489
    5. Ru-Yi Shang, Jie Cui, Jia-Xin Li, Xian-Xian Miao, Lu Zhang, Dong-Dong Xie, Liang Zhang, Hou-Wen Lin, Wei-Hua Jiao. Nigerin and ochracenes J−L, new sesquiterpenoids from the marine sponge symbiotic fungus Aspergillus niger. Tetrahedron 2022, 104 , 132599. https://doi.org/10.1016/j.tet.2021.132599
    6. Kazunari Sakai, Masato Iwatsuki, Taichi Kaneta, Aoi Kimishima, Yukihiro Asami, Toshiaki Sunazuka, Rokuro Masuma, Kenichi Nonaka. Sesquicillin F, a new insecticidal meroterpenoid produced by Mariannaea macrochlamydospora FKI-4735. The Journal of Antibiotics 2021, 74 (11) , 817-820. https://doi.org/10.1038/s41429-021-00456-9
    7. Matthias Köck, Thomas Lindel, Jochen Junker. Incorporation of 4J-HMBC and NOE Data into Computer-Assisted Structure Elucidation with WebCocon. Molecules 2021, 26 (16) , 4846. https://doi.org/10.3390/molecules26164846

    Journal of Natural Products

    Cite this: J. Nat. Prod. 2020, 83, 12, 3564–3570
    Click to copy citationCitation copied!
    https://doi.org/10.1021/acs.jnatprod.0c00618
    Published December 11, 2020
    Copyright © 2020 American Chemical Society and American Society of Pharmacognosy

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