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Hitora Y, El-Desoky AH, Sadahiro Y, Sejiyama A, Kinoshita A, Ise Y, Angkouw ED, Mangindaan REP, Higaki T, Tsukamoto S. Neopetromin, a Cyclic Tripeptide with a C-N Cross-Link, from the Marine Sponge Neopetrosia sp., That Causes Vacuole Fragmentation in Tobacco BY-2 Cells. JOURNAL OF NATURAL PRODUCTS 2024. [PMID: 38503712 DOI: 10.1021/acs.jnatprod.4c00158] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/21/2024]
Abstract
HPLC-MS analysis revealed the presence of an unreported peptide in the extract of the marine sponge Neopetrosia sp. Its structure was determined as a tripeptide, named neopetromin (1), composed of two tyrosine and one tryptophan residues with a heteroaromatic C-N cross-link between side chains. The absolute configuration of amino acids was determined using Marfey's method after ozonolysis and hydrolysis of 1. Compound 1 promoted vacuole fragmentation in an actin-independent manner in tobacco BY-2 cells.
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Affiliation(s)
- Yuki Hitora
- Department of Natural Medicines, Graduate School of Pharmaceutical Sciences, Kumamoto University, 5-1 Oe-honmachi, Kumamoto 862-0973, Japan
| | - Ahmed H El-Desoky
- Pharmaceutical and Drug Industries Research Institute, Pharmacognosy Department, National Research Centre, 33 El-Bohouth Street, Dokki, Giza 12622, Egypt
| | - Yusaku Sadahiro
- Department of Natural Medicines, Graduate School of Pharmaceutical Sciences, Kumamoto University, 5-1 Oe-honmachi, Kumamoto 862-0973, Japan
| | - Ai Sejiyama
- Department of Natural Medicines, Graduate School of Pharmaceutical Sciences, Kumamoto University, 5-1 Oe-honmachi, Kumamoto 862-0973, Japan
| | - Amiri Kinoshita
- Faculty of Science, Kumamoto University, Kurokami, Chuo-ku, Kumamoto 860-8555 Japan
| | - Yuji Ise
- Kuroshio Biological Research Foundation, 560 Nishidomari, Otsuki, Hata, Kochi 788-0333, Japan
| | - Esther D Angkouw
- Faculty of Fisheries and Marine Science, Sam Ratulangi University, Kampus Bahu, Manado 95115, Indonesia
| | - Remy E P Mangindaan
- Faculty of Fisheries and Marine Science, Sam Ratulangi University, Kampus Bahu, Manado 95115, Indonesia
| | - Takumi Higaki
- Faculty of Science, Kumamoto University, Kurokami, Chuo-ku, Kumamoto 860-8555 Japan
- International Research Organization for Advanced Science and Technology, Kumamoto University, Kurokami, Chuo-ku, Kumamoto 860-8555 Japan
| | - Sachiko Tsukamoto
- Department of Natural Medicines, Graduate School of Pharmaceutical Sciences, Kumamoto University, 5-1 Oe-honmachi, Kumamoto 862-0973, Japan
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2
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Dalling AG, Späth G, Fürstner A. Total Synthesis of the Tetracyclic Pyridinium Alkaloid epi-Tetradehydrohalicyclamine B. Angew Chem Int Ed Engl 2022; 61:e202209651. [PMID: 35971850 PMCID: PMC9826155 DOI: 10.1002/anie.202209651] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2022] [Indexed: 01/11/2023]
Abstract
The first total synthesis of a tetracyclic marine pyridinium alkaloid hinged on recent advances in chemoselectivity management: While many classical methods failed to afford the perceptively simple pyridine-containing core of the target, nickel/iridium photoredox dual catalysis allowed the critical C-C bond to be formed in good yield. Likewise, ring closing alkyne metathesis (RCAM) worked well in the presence of the unhindered pyridine despite the innately Lewis acidic Mo(+6) center of the alkylidyne catalyst. Finally, an iridium catalyzed hydrosilylation was uniquely effective in reducing a tertiary amide without compromising an adjacent pyridine and the lateral double bonds; this transformation is largely without precedent. The second strained macrocycle enveloping the core was closed by intramolecular N-alkylation with formation of the pyridinium unit; the reaction proceeded site- and chemoselectively in the presence of an a priori more basic tertiary amine.
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Affiliation(s)
| | - Georg Späth
- Max-Planck-Institut für Kohlenforschung45470Mülheim/RuhrGermany
| | - Alois Fürstner
- Max-Planck-Institut für Kohlenforschung45470Mülheim/RuhrGermany
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3
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Structural analysis of previously unknown natural products using computational methods. J Nat Med 2022; 76:719-724. [PMID: 35849303 PMCID: PMC9411225 DOI: 10.1007/s11418-022-01637-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2022] [Accepted: 06/22/2022] [Indexed: 10/24/2022]
Abstract
Natural products exhibit structural diversity, and biologically active natural products with unprecedented molecular skeletons can potentially be isolated from natural resources in the future. Although it has often been difficult to determine the structures and configurations of new compounds that do not resemble known compounds, the determination of the chemical structures, including the absolute stereo configuration, is very important in drug discovery research. In our efforts to find new bioactive natural products, we have identified novel compounds such as the ubiquitin-proteasome system inhibitors and osteoclast differentiation inhibitors. Various natural products, mixtures of stereoisomers of natural products, and compounds with novel skeletal structures were studied. In cases where it was difficult to determine the structures by NMR spectroscopy, we could successfully determine the chemical structures by computational chemistry. This review presents the results of structural analysis obtained using computational methods for several natural products that we have recently isolated.
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Dalling AG, Späth G, Fürstner A. Total Synthesis of the Tetracyclic Pyridinium Alkaloid epi‐Tetradehydrohalicyclamine B. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202209651] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Andrew G. Dalling
- Max-Planck-Institut für Kohlenforschung: Max-Planck-Institut fur Kohlenforschung Organometallic Chemistry GERMANY
| | - Georg Späth
- Max-Planck-Institut für Kohlenforschung: Max-Planck-Institut fur Kohlenforschung Organometallic Chemistry GERMANY
| | - Alois Fürstner
- Max-Planck-Institut fur Kohlenforschung Organometallic Chemistry Kaiser-Wilhelm-Platz 1 45470 Mülheim/Ruhr GERMANY
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Nishimura S, Hitora Y, Kawahara T, Tanabe M, Ogata E, Kato H, Srikoon P, Watanabe T, Tsukamoto S. Cell-based screening of extracts of natural sources to search for inhibitors of the ubiquitin–proteasome system and identification of proteasome inhibitors from the fungus Remotididymella sp. Bioorg Med Chem Lett 2022; 59:128566. [DOI: 10.1016/j.bmcl.2022.128566] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2021] [Revised: 01/06/2022] [Accepted: 01/13/2022] [Indexed: 11/02/2022]
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Panggabean JA, Adiguna SP, Murniasih T, Rahmawati SI, Bayu A, Putra MY. Structure–Activity Relationship of Cytotoxic Natural Products from Indonesian Marine Sponges. REVISTA BRASILEIRA DE FARMACOGNOSIA 2022; 32:12-38. [PMID: 35034994 PMCID: PMC8740879 DOI: 10.1007/s43450-021-00195-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/11/2021] [Accepted: 09/15/2021] [Indexed: 11/29/2022]
Abstract
Indonesian marine natural products have been one of the most promising sources in the race to obtain potential drugs for cancer treatment. One of the primary producers of cytotoxic compounds is sponges. However, there are still limited sources of comprehensive reviews related to the relationship between the structure of isolated compounds and their cytotoxic activity. This review remarks the attempt to provide a preliminary guidance from the perspective of structure–activity relationship and its participation on marine natural products research. This guidance is segregated by the compound’s classes and their cytotoxic targets to obtain and organized a reliable summary of inter-study of the isolated compounds and their cytotoxicity. Structure–activity relationship is well-known for its ability to tune the bioactivity of a specific compound, especially on synthetic organic chemistry and in silico study but rarely used on natural product chemistry. The present review is intended to narrow down the endless possibilities of cytotoxicity by giving a predictable structure–activity relationship for active compounds. In addition, bioactive framework leads were selected by uncovering a noticeable structure–activity relationship with the intervention of cytotoxic agents from natural sources, especially Indonesian marine sponge.
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Affiliation(s)
- Jonathan A. Panggabean
- Department of Chemistry, Faculty of Mathematics and Natural Sciences, Universitas Gadjah Mada, Bulaksumur, Yogyakarta, 55281 Indonesia
- Research Center for Biotechnology, Research Organization for Life Science, National Research and Innovation Agency (BRIN), Jalan Raya Jakarta-Bogor KM. 46, Cibinong, Jawa Barat 16911 Bogor, Indonesia
| | - Sya’ban P. Adiguna
- Department of Chemistry, Faculty of Mathematics and Natural Sciences, Universitas Gadjah Mada, Bulaksumur, Yogyakarta, 55281 Indonesia
- Research Center for Biotechnology, Research Organization for Life Science, National Research and Innovation Agency (BRIN), Jalan Raya Jakarta-Bogor KM. 46, Cibinong, Jawa Barat 16911 Bogor, Indonesia
| | - Tutik Murniasih
- Research Center for Biotechnology, Research Organization for Life Science, National Research and Innovation Agency (BRIN), Jalan Raya Jakarta-Bogor KM. 46, Cibinong, Jawa Barat 16911 Bogor, Indonesia
| | - Siti I. Rahmawati
- Research Center for Biotechnology, Research Organization for Life Science, National Research and Innovation Agency (BRIN), Jalan Raya Jakarta-Bogor KM. 46, Cibinong, Jawa Barat 16911 Bogor, Indonesia
| | - Asep Bayu
- Research Center for Biotechnology, Research Organization for Life Science, National Research and Innovation Agency (BRIN), Jalan Raya Jakarta-Bogor KM. 46, Cibinong, Jawa Barat 16911 Bogor, Indonesia
| | - Masteria Y. Putra
- Research Center for Biotechnology, Research Organization for Life Science, National Research and Innovation Agency (BRIN), Jalan Raya Jakarta-Bogor KM. 46, Cibinong, Jawa Barat 16911 Bogor, Indonesia
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Carroll AR, Copp BR, Davis RA, Keyzers RA, Prinsep MR. Marine natural products. Nat Prod Rep 2021; 38:362-413. [PMID: 33570537 DOI: 10.1039/d0np00089b] [Citation(s) in RCA: 198] [Impact Index Per Article: 66.0] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
This review covers the literature published in 2019 for marine natural products (MNPs), with 719 citations (701 for the period January to December 2019) referring to compounds isolated from marine microorganisms and phytoplankton, green, brown and red algae, sponges, cnidarians, bryozoans, molluscs, tunicates, echinoderms, mangroves and other intertidal plants and microorganisms. The emphasis is on new compounds (1490 in 440 papers for 2019), together with the relevant biological activities, source organisms and country of origin. Pertinent reviews, biosynthetic studies, first syntheses, and syntheses that led to the revision of structures or stereochemistries, have been included. Methods used to study marine fungi and their chemical diversity have also been discussed.
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Affiliation(s)
- Anthony R Carroll
- School of Environment and Science, Griffith University, Gold Coast, Australia. and Griffith Institute for Drug Discovery, Griffith University, Brisbane, Australia
| | - Brent R Copp
- School of Chemical Sciences, University of Auckland, Auckland, New Zealand
| | - Rohan A Davis
- Griffith Institute for Drug Discovery, Griffith University, Brisbane, Australia and School of Enivironment and Science, Griffith University, Brisbane, Australia
| | - Robert A Keyzers
- Centre for Biodiscovery, School of Chemical and Physical Sciences, Victoria University of Wellington, Wellington, New Zealand
| | - Michèle R Prinsep
- Chemistry, School of Science, University of Waikato, Hamilton, New Zealand
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8
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Hubbell GE, Tepe JJ. Natural product scaffolds as inspiration for the design and synthesis of 20S human proteasome inhibitors. RSC Chem Biol 2020; 1:305-332. [PMID: 33791679 PMCID: PMC8009326 DOI: 10.1039/d0cb00111b] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2020] [Accepted: 09/01/2020] [Indexed: 12/13/2022] Open
Abstract
The 20S proteasome is a valuable target for the treatment of a number of diseases including cancer, neurodegenerative disease, and parasitic infection. In an effort to discover novel inhibitors of the 20S proteasome, many reseaarchers have looked to natural products as potential leads for drug discovery. The following review discusses the efforts made in the field to isolate and identify natural products as inhibitors of the proteasome. In addition, we describe some of the modifications made to natural products in order to discover more potent and selective inhibitors for potential disease treatment.
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Affiliation(s)
- Grace E. Hubbell
- Department of Chemistry, Michigan State UniversityEast LansingMI 48823USA
| | - Jetze J. Tepe
- Department of Chemistry, Michigan State UniversityEast LansingMI 48823USA
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Althagbi HI, Alarif WM, Al-Footy KO, Abdel-Lateff A. Marine-Derived Macrocyclic Alkaloids (MDMAs): Chemical and Biological Diversity. Mar Drugs 2020; 18:md18070368. [PMID: 32709048 PMCID: PMC7404069 DOI: 10.3390/md18070368] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2020] [Revised: 07/07/2020] [Accepted: 07/15/2020] [Indexed: 12/22/2022] Open
Abstract
The curiosity and attention that researchers have devoted to alkaloids are due to their bioactivities, structural diversity, and intriguing chemistry. Marine-derived macrocyclic alkaloids (MDMAs) are considered to be a potential source of drugs. Trabectedin, a tetrahydroisoquinoline derivative, has been approved for the treatment of metastatic soft tissue sarcoma and ovarian cancers. MDMAs displayed potent activities that enabled them to be used as anticancer, anti-invasion, antimalarial, antiplasmodial, and antimicrobial. This review presents the reported chemical structures, biological activities, and structure-activity relationships of macrocyclic alkaloids from marine organisms that have been published since their discovery until May 2020. This includes 204 compounds that are categorized under eight subclasses: pyrroles, quinolines, bis-quinolizidines, bis-1-oxaquinolizidines, 3-alkylpiperidines, manzamines, 3-alkyl pyridinium salts, and motuporamines.
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Affiliation(s)
- Hanan I. Althagbi
- Department of Chemistry, Faculty of Science, University of Jeddah, P.O. Box 13151, Jeddah 21493, Saudi Arabia;
- Department of Chemistry, Faculty of Science, King Abdulaziz University, P.O. Box 80203, Jeddah 21589, Saudi Arabia;
| | - Walied M. Alarif
- Department of Marine Chemistry, Faculty of Marine Sciences, King Abdulaziz University, P.O. Box 80207, Jeddah 21589, Saudi Arabia
- Correspondence: ; Tel.: +966-5603-520-34
| | - Khalid O. Al-Footy
- Department of Chemistry, Faculty of Science, King Abdulaziz University, P.O. Box 80203, Jeddah 21589, Saudi Arabia;
| | - Ahmed Abdel-Lateff
- Department of Natural Products and Alternative Medicine, Faculty of Pharmacy, King Abdulaziz University, P.O. Box 80260, Jeddah 21589, Saudi Arabia;
- Department of Pharmacognosy, Faculty of Pharmacy, Minia University, Minia 61519, Egypt
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10
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Bioactive Nitrogenous Secondary Metabolites from the Marine Sponge Genus Haliclona. Mar Drugs 2019; 17:md17120682. [PMID: 31816961 PMCID: PMC6949942 DOI: 10.3390/md17120682] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2019] [Revised: 11/26/2019] [Accepted: 12/02/2019] [Indexed: 12/13/2022] Open
Abstract
Marine sponge genus Haliclona, one of the most prolific sources of natural products, contains over 600 species but only a small part of them had been classified and chemically investigated. On the basis of extensive literature search, this review firstly summarizes 112 nitrogenous secondary metabolites from classified and unclassified Haliclona sponges as well as from their symbiotic microorganisms. Most of these substances have only been found in Haliclona sponges, and display diverse bioactive properties with potential applications in new drug discovery.
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11
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A Collection of Bioactive Nitrogen-Containing Molecules from the Marine Sponge Acanthostrongylophora ingens. Mar Drugs 2019; 17:md17080472. [PMID: 31443260 PMCID: PMC6723059 DOI: 10.3390/md17080472] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2019] [Revised: 08/12/2019] [Accepted: 08/13/2019] [Indexed: 02/06/2023] Open
Abstract
Thirteen nitrogen-containing molecules (1a/1b and 2–12) were isolated from the Indonesian sponge Acanthostrongylophora ingens, highlighting the richness of this organism as a source of alkaloids. Their structures were elucidated using one- and two-dimensional NMR spectroscopy and HR-ESI-MS, while the stereochemistry of the diketopiperazines was established using Marfey’s method. All compounds were screened in our standard bioactivity assays, including antibacterial, antikinases, and amyloid β-42 assays. The most interesting bioactivity result was obtained with the known acanthocyclamine A (3), which revealed for the first time a specific Escherichia coli antimicrobial activity and an inhibitory effect on amyloid β-42 production induced by aftin-5 and no cytotoxicity at the dose of 26 µM. These results highlight the potentiality of a bipiperidine scaffold as a promising skeleton for preventing or reducing the production of amyloid β-42, a key player in the initiation of Alzheimer’s disease.
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12
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Kato H, Sebe M, Nagaki M, Eguchi K, Kagiyama I, Hitora Y, Frisvad JC, Williams RM, Tsukamoto S. Taichunins A-D, Norditerpenes from Aspergillus taichungensis (IBT 19404). JOURNAL OF NATURAL PRODUCTS 2019; 82:1377-1381. [PMID: 30995043 DOI: 10.1021/acs.jnatprod.8b01032] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Four new norditerpenes, taichunins A-D (1-4), were isolated from the fungus Aspergillus taichungensis (IBT 19404). Compound 1 has a new carbon framework. The absolute configurations were determined by the calculated ECD spectral method. Compound 1 was cytotoxic against HeLa cells with an IC50 value of 4.5 μM, whereas 2-4 were nontoxic at 50 μM.
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Affiliation(s)
- Hikaru Kato
- Graduate School of Pharmaceutical Sciences , Kumamoto University , 5-1 Oe-honmachi , Kumamoto 862-0973 , Japan
| | - Momona Sebe
- Graduate School of Pharmaceutical Sciences , Kumamoto University , 5-1 Oe-honmachi , Kumamoto 862-0973 , Japan
| | - Mika Nagaki
- Graduate School of Pharmaceutical Sciences , Kumamoto University , 5-1 Oe-honmachi , Kumamoto 862-0973 , Japan
| | - Keisuke Eguchi
- Graduate School of Pharmaceutical Sciences , Kumamoto University , 5-1 Oe-honmachi , Kumamoto 862-0973 , Japan
| | - Ippei Kagiyama
- Graduate School of Pharmaceutical Sciences , Kumamoto University , 5-1 Oe-honmachi , Kumamoto 862-0973 , Japan
| | - Yuki Hitora
- Graduate School of Pharmaceutical Sciences , Kumamoto University , 5-1 Oe-honmachi , Kumamoto 862-0973 , Japan
| | - Jens C Frisvad
- Section for Eukaryotic Biotechnology, Departments of System Biology , Technical University of Denmark , Building 221, 2800 Kongens Lyngby , Denmark
| | - Robert M Williams
- Department of Chemistry , Colorado State University , 301 West Pitkin Street , Fort Collins , Colorado 80523 , United States
- University of Colorado Cancer Center , Aurora , Colorado 80045 , United States
| | - Sachiko Tsukamoto
- Graduate School of Pharmaceutical Sciences , Kumamoto University , 5-1 Oe-honmachi , Kumamoto 862-0973 , Japan
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