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Yamagishi Y, Kamada T, Ishii T, Matsuura H, Kikuchi N, Abe T, Suzuki M. Morphological and Chemical Diversity within Japanese Laurencia Complex (Rhodomelaceae, Ceramiales, Rhodophyta). Chem Biodivers 2024; 21:e202400833. [PMID: 38959122 DOI: 10.1002/cbdv.202400833] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2024] [Revised: 06/26/2024] [Accepted: 06/30/2024] [Indexed: 07/05/2024]
Abstract
Seaweeds of the red algal genus Laurencia are distributed worldwide in tropical, subtropical to temperate zones, growing in Japan from Hokkaido to Okinawa. Laurencia is highly difficult to classify morphologically because of a high degree of morphological variation within individual species. Nevertheless, Laurencia investigation is favored by organic chemists as it produces uniquely structured compounds. Halogenated secondary metabolites are considered to be used as chemical markers for chemical systematics (chemotaxonomy) of this troublesome genus. As a "weedy seaweed", Laurencia is not effectively utilized, yet it produces a variety of metabolites and thus, holds good potential for containing compounds with specific activity, especially in aspects of secondary metabolites. In this review, we reported significant morphological features to distinguish species in this genus, and the morphological features, habitat, distribution, and chemical composition that help discriminate Japanese Laurencia species.
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Affiliation(s)
- Yukimasa Yamagishi
- Department of Marine Bio-Science, Faculty of Life Science and Biotechnology, Fukuyama University, 1 Gakuen-cho, Fukuyama, Hiroshima, 729-0292, Japan
| | - Takashi Kamada
- Department of Materials and Life Science, Faculty of Science and Technology, Shizuoka Institute of Science and Technology, 2200-2 Toyosawa, Fukuroi, Shizuoka, 437-8555, Japan
| | - Takahiro Ishii
- Department of Biosciences and Biotechnology, Faculty of Agriculture, University of the Ryukyus, 1 Senbaru, Nishihara, Okinawa, 903-0213, Japan
| | - Hiroshi Matsuura
- Department of Materials Chemistry, Advanced Course of Applied Chemistry, National Institute of Technology, Asahikawa College, 2-2-1-6 Shunkodai, Asahikawa, Hokkaido, 071-8142, Japan
| | - Norio Kikuchi
- Coastal Branch of Natural History Museum and Institute, Chiba, 123 Yoshio, Katsuura, Chiba, 299-5242, Japan
| | - Tsuyoshi Abe
- The Hokkaido University Museum, Hokkaido University, N10 W8, Kita-ku, Sapporo, Hokkaido, 060-0810, Japan
| | - Minoru Suzuki
- Coastal Branch of Natural History Museum and Institute, Chiba, 123 Yoshio, Katsuura, Chiba, 299-5242, Japan
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2
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Neves AR, Godinho S, Gonçalves C, Gomes AS, Almeida JR, Pinto M, Sousa E, Correia-da-Silva M. A Chemical Toolbox to Unveil Synthetic Nature-Inspired Antifouling (NIAF) Compounds. Mar Drugs 2024; 22:416. [PMID: 39330297 PMCID: PMC11433177 DOI: 10.3390/md22090416] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2024] [Revised: 09/08/2024] [Accepted: 09/09/2024] [Indexed: 09/28/2024] Open
Abstract
The current scenario of antifouling (AF) strategies to prevent the natural process of marine biofouling is based in the use of antifouling paints containing different active ingredients, believed to be harmful to the marine environment. Compounds called booster biocides are being used with copper as an alternative to the traditionally used tributyltin (TBT); however, some of them were recently found to accumulate in coastal waters at levels that are deleterious for marine organisms. More ecological alternatives were pursued, some of them based on the marine organism mechanisms' production of specialized metabolites with AF activity. However, despite the investment in research on AF natural products and their synthetic analogues, many studies showed that natural AF alternatives do not perform as well as the traditional metal-based ones. In the search for AF agents with better performance and to understand which molecular motifs were responsible for the AF activity of natural compounds, synthetic analogues were produced and investigated for structure-AF activity relationship studies. This review is a comprehensive compilation of AF compounds synthesized in the last two decades with highlights on the data concerning their structure-activity relationship, providing a chemical toolbox for researchers to develop efficient nature-inspired AF agents.
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Affiliation(s)
- Ana Rita Neves
- Laboratory of Organic and Pharmaceutical Chemistry, Department of Chemical Sciences, Faculty of Pharmacy, University of Porto, Rua Jorge Viterbo Ferreira, 228, 4050-313 Porto, Portugal
- CIIMAR-Centro Interdisciplinar de Investigação Marinha e Ambiental, Terminal de Cruzeiros do Porto de Leixões, 4450-208 Matosinhos, Portugal
| | - Sara Godinho
- Laboratory of Organic and Pharmaceutical Chemistry, Department of Chemical Sciences, Faculty of Pharmacy, University of Porto, Rua Jorge Viterbo Ferreira, 228, 4050-313 Porto, Portugal
- CIIMAR-Centro Interdisciplinar de Investigação Marinha e Ambiental, Terminal de Cruzeiros do Porto de Leixões, 4450-208 Matosinhos, Portugal
| | - Catarina Gonçalves
- CIIMAR-Centro Interdisciplinar de Investigação Marinha e Ambiental, Terminal de Cruzeiros do Porto de Leixões, 4450-208 Matosinhos, Portugal
| | - Ana Sara Gomes
- CIIMAR-Centro Interdisciplinar de Investigação Marinha e Ambiental, Terminal de Cruzeiros do Porto de Leixões, 4450-208 Matosinhos, Portugal
| | - Joana R Almeida
- CIIMAR-Centro Interdisciplinar de Investigação Marinha e Ambiental, Terminal de Cruzeiros do Porto de Leixões, 4450-208 Matosinhos, Portugal
| | - Madalena Pinto
- Laboratory of Organic and Pharmaceutical Chemistry, Department of Chemical Sciences, Faculty of Pharmacy, University of Porto, Rua Jorge Viterbo Ferreira, 228, 4050-313 Porto, Portugal
- CIIMAR-Centro Interdisciplinar de Investigação Marinha e Ambiental, Terminal de Cruzeiros do Porto de Leixões, 4450-208 Matosinhos, Portugal
| | - Emília Sousa
- Laboratory of Organic and Pharmaceutical Chemistry, Department of Chemical Sciences, Faculty of Pharmacy, University of Porto, Rua Jorge Viterbo Ferreira, 228, 4050-313 Porto, Portugal
- CIIMAR-Centro Interdisciplinar de Investigação Marinha e Ambiental, Terminal de Cruzeiros do Porto de Leixões, 4450-208 Matosinhos, Portugal
| | - Marta Correia-da-Silva
- Laboratory of Organic and Pharmaceutical Chemistry, Department of Chemical Sciences, Faculty of Pharmacy, University of Porto, Rua Jorge Viterbo Ferreira, 228, 4050-313 Porto, Portugal
- CIIMAR-Centro Interdisciplinar de Investigação Marinha e Ambiental, Terminal de Cruzeiros do Porto de Leixões, 4450-208 Matosinhos, Portugal
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3
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Ishigami S, Fukada R, Nagasaka G, Tsuruta T, Nishikawa K, Sasaki Y, Nimura K, Oshima I, Yamagishi Y, Morimoto Y, Kamada T, Ishii T. Halogenated Cyclic Monoterpenoids with Anti-Biofouling Activity from the Okinawan Red Marine Algae Portieria Hornemannii. Chem Biodivers 2024; 21:e202400436. [PMID: 38529722 DOI: 10.1002/cbdv.202400436] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2024] [Revised: 03/25/2024] [Accepted: 03/25/2024] [Indexed: 03/27/2024]
Abstract
The red algal genus Portieria is a prolific producer of halogenated monoterpenoids. In this study, we isolated and characterised monoterpenoids from the Okinawan red algae Portieria hornemannii. A new polyhalogenated cyclic monoterpenoid, 2(R)-chloro-1,6(S)-dibromo-3(8)(Z)-ochtoden-4(R)-ol (1), along with three known monoterpenoids, (2R,3(8)E,4S,6R)-6-bromo-2-chloro-1,4-oxido-3(8)-ochtodene (2), 1-bromo-2-chloroochtoda-3(8),5-dien-4-one (3), and 2-chloro-1-hydroxyochtoda-3(8),5-dien-4-one (4) were isolated from the methanol extract of three populations of P. hornemannii. These compounds were characterised using a combination of spectroscopic methods and chemical synthesis, and the absolute stereochemistry of compounds 1 and 2 was determined. In addition, all isolated compounds were screened for their anti-biofouling activity against the mussel Mytilus galloprovincialis, and 1 exhibited strong activity. Therefore, halogenated monoterpenoids have the potential to be used as natural anti-biofouling drugs.
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Affiliation(s)
- Shinnosuke Ishigami
- The United Graduate School of Agricultural Sciences, Kagoshima University, 1-21-24 Korimoto, Kagoshima, 890-0065, Japan
| | - Ryosuke Fukada
- Faculty of Science and Technology, Shizuoka Institute of Science and Technology, 2200-2 Toyosawa, Fukuroi, Shizuoka, 437-8555, Japan
| | - Genki Nagasaka
- Faculty of Science and Technology, Shizuoka Institute of Science and Technology, 2200-2 Toyosawa, Fukuroi, Shizuoka, 437-8555, Japan
| | - Tomoki Tsuruta
- Department of Chemistry, Graduate School of Science, Osaka Metropolitan University, 3-3-138 Sugimoto, Sumiyoshi-ku, Osaka, 558-8585, Japan
| | - Keisuke Nishikawa
- Department of Chemistry, Graduate School of Science, Osaka Metropolitan University, 3-3-138 Sugimoto, Sumiyoshi-ku, Osaka, 558-8585, Japan
| | - Yu Sasaki
- Department of Biosciences and Biotechnology, Faculty of Agriculture, University of the Ryukyus, 1 Senbaru, Nishihara, Okinawa, 903-0213, Japan
| | - Kazumi Nimura
- Shizuoka Prefectural Research Institute of Fishery and Ocean, 136-24 Iwashigashima, Yaizu, Shizuoka, 425-0032, Japan
| | - Iori Oshima
- Shizuoka Prefectural Research Institute of Fishery and Ocean, 136-24 Iwashigashima, Yaizu, Shizuoka, 425-0032, Japan
| | - Yukimasa Yamagishi
- Faculty of Life Science and Biotechnology, Fukuyama University, 1 Gakuen-cho, Fukuyama, Hiroshima, 729-0292, Japan
| | - Yoshiki Morimoto
- Department of Chemistry, Graduate School of Science, Osaka Metropolitan University, 3-3-138 Sugimoto, Sumiyoshi-ku, Osaka, 558-8585, Japan
| | - Takashi Kamada
- Faculty of Science and Technology, Shizuoka Institute of Science and Technology, 2200-2 Toyosawa, Fukuroi, Shizuoka, 437-8555, Japan
| | - Takahiro Ishii
- The United Graduate School of Agricultural Sciences, Kagoshima University, 1-21-24 Korimoto, Kagoshima, 890-0065, Japan
- Department of Biosciences and Biotechnology, Faculty of Agriculture, University of the Ryukyus, 1 Senbaru, Nishihara, Okinawa, 903-0213, Japan
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4
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Preet G, Astakala RV, Gomez-Banderas J, Rajakulendran JE, Hasan AH, Ebel R, Jaspars M. Virtual Screening of a Library of Naturally Occurring Anthraquinones for Potential Anti-Fouling Agents. Molecules 2023; 28:molecules28030995. [PMID: 36770663 PMCID: PMC9920117 DOI: 10.3390/molecules28030995] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2022] [Revised: 01/09/2023] [Accepted: 01/16/2023] [Indexed: 01/21/2023] Open
Abstract
Marine biofouling is the undesired accumulation of organic molecules, microorganisms, macroalgae, marine invertebrates, and their by-products on submerged surfaces. It is a serious challenge for marine vessels and the oil, gas, and renewable energy industries, as biofouling can cause economic losses for these industries. Natural products have been an abundant source of therapeutics since the start of civilisation. Their use as novel anti-fouling agents is a promising approach for replacing currently used, harmful anti-fouling agents. Anthraquinones (AQs) have been used for centuries in the food, pharmaceutical, cosmetics, and paint industries. Citreorosein and emodin are typical additives used in the anti-fouling paint industry to help improve the global problem of biofouling. This study is based on our previous study, in which we presented the promising activity of structurally related anthraquinone compounds against biofilm-forming marine bacteria. To help uncover the anti-fouling potential of other AQ-related structures, 2194 compounds from the COCONUT natural products database were analysed. Molecular docking analysis was performed to assess the binding strength of these compounds to the LuxP protein in Vibrio carchariae. The LuxP protein is a vital binding protein responsible for the movements of autoinducers within the quorum sensing system; hence, interrupting the process at an early stage could be an effective strategy. Seventy-six AQ structures were found to be highly docked, and eight of these structures were used in structure-based pharmacophore modelling, resulting in six unique pharmacophore features.
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Affiliation(s)
- Gagan Preet
- Marine Biodiscovery Centre, Department of Chemistry, University of Aberdeen, Aberdeen AB24 3UE, UK
| | | | - Jessica Gomez-Banderas
- Marine Biodiscovery Centre, Department of Chemistry, University of Aberdeen, Aberdeen AB24 3UE, UK
- The National Decommissioning Centre, University of Aberdeen, Aberdeen AB41 6AA, UK
| | - Joy Ebenezer Rajakulendran
- Marine Biodiscovery Centre, Department of Chemistry, University of Aberdeen, Aberdeen AB24 3UE, UK
- Department of Chemistry, Eastern University, Chenkaladi 30350, Sri Lanka
| | - Ahlam Haj Hasan
- Marine Biodiscovery Centre, Department of Chemistry, University of Aberdeen, Aberdeen AB24 3UE, UK
- The Medicinal Chemistry and Pharmacognosy Department, College of Pharmacy, Jordan University of Science and Technology, Irbid 22110, Jordan
| | - Rainer Ebel
- Marine Biodiscovery Centre, Department of Chemistry, University of Aberdeen, Aberdeen AB24 3UE, UK
| | - Marcel Jaspars
- Marine Biodiscovery Centre, Department of Chemistry, University of Aberdeen, Aberdeen AB24 3UE, UK
- Correspondence:
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5
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Taniguchi T, Mutmainah, Takimoto S, Suzuki T, Watanabe S, Matsuda F, Umezawa T, Monde K. Scope and limitations of absolute configuration determination of allenic natural products using the CCC stretching VCD signal. Org Biomol Chem 2023; 21:569-574. [PMID: 36541676 DOI: 10.1039/d2ob01520j] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
The allene functional group in natural products isolated so far exists in a non-racemic form, but its axial chirality is difficult to elucidate. Allenes exhibit a characteristic antisymmetric CCC stretching mode at around 1950 cm-1, and their VCD properties have not been studied in detail. This work, for the first time, applied VCD spectroscopy to allenic natural products and allenic molecules with other asymmetric centers focusing on the antisymmetric CCC stretching mode. This vibrational mode yielded a negligibly weak VCD signal for several molecules, but in the presence of electron-withdrawing and/or conjugating substituents, it generated a stronger one. Its sign was found to be influenced by the nature of substituents. These findings should deepen the understanding of the VCD properties of the allene functional group and should be useful for future studies of chiral allenes.
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Affiliation(s)
- Tohru Taniguchi
- Frontier Research Center for Advanced Material and Life Science, Faculty of Advanced Life Science, Hokkaido University, North 21 West 11, Sapporo 001-0021, Japan.
| | - Mutmainah
- Graduate School of Life Science, Hokkaido University, North 21 West 11, Sapporo 001-0021, Japan
| | - Shu Takimoto
- Graduate School of Life Science, Hokkaido University, North 21 West 11, Sapporo 001-0021, Japan
| | - Takahiro Suzuki
- Department of Chemistry, Faculty of Science, Hokkaido University, North 10 West 8, Sapporo 060-0810, Japan
| | - Soichiro Watanabe
- Graduate School of Chemical Sciences and Engineering, Hokkaido University, North 13 West 8, Sapporo 060-8628, Japan
| | - Fuyuhiko Matsuda
- Division of Environmental Materials Science, Graduate School of Environmental Science, Hokkaido University, North 10 West 5, Sapporo 060-0810, Japan
| | - Taiki Umezawa
- Division of Environmental Materials Science, Graduate School of Environmental Science, Hokkaido University, North 10 West 5, Sapporo 060-0810, Japan
| | - Kenji Monde
- Frontier Research Center for Advanced Material and Life Science, Faculty of Advanced Life Science, Hokkaido University, North 21 West 11, Sapporo 001-0021, Japan.
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6
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Gribble GW. Naturally Occurring Organohalogen Compounds-A Comprehensive Review. PROGRESS IN THE CHEMISTRY OF ORGANIC NATURAL PRODUCTS 2023; 121:1-546. [PMID: 37488466 DOI: 10.1007/978-3-031-26629-4_1] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/26/2023]
Abstract
The present volume is the third in a trilogy that documents naturally occurring organohalogen compounds, bringing the total number-from fewer than 25 in 1968-to approximately 8000 compounds to date. Nearly all of these natural products contain chlorine or bromine, with a few containing iodine and, fewer still, fluorine. Produced by ubiquitous marine (algae, sponges, corals, bryozoa, nudibranchs, fungi, bacteria) and terrestrial organisms (plants, fungi, bacteria, insects, higher animals) and universal abiotic processes (volcanos, forest fires, geothermal events), organohalogens pervade the global ecosystem. Newly identified extraterrestrial sources are also documented. In addition to chemical structures, biological activity, biohalogenation, biodegradation, natural function, and future outlook are presented.
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Affiliation(s)
- Gordon W Gribble
- Department of Chemistry, Dartmouth College, Hanover, NH, 03755, USA.
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7
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Harizani M, Diakaki DI, Perdikaris S, Roussis V, Ioannou E. New C15 Acetogenins from Two Species of Laurencia from the Aegean Sea. Molecules 2022; 27:molecules27061866. [PMID: 35335229 PMCID: PMC8953645 DOI: 10.3390/molecules27061866] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2022] [Revised: 03/06/2022] [Accepted: 03/10/2022] [Indexed: 11/17/2022] Open
Abstract
The chemical diversity of the approximately 1,200 natural products isolated from red algae of the genus Laurencia, in combination with the wide range of their biological activities, have placed species of Laurencia in the spotlight of marine chemists’ attention for over 60 years. The chemical investigation of the organic (CH2Cl2/MeOH) extracts of Laurencia microcladia and Laurencia obtusa, both collected off the coasts of Tinos island in the Aegean Sea, resulted in the isolation of 32 secondary metabolites, including 23 C15 acetogenins (1–23), 7 sesquiterpenes (24–30) and 2 diterpenes (31 and 32). Among them, six new C15 acetogenins, namely 10-acetyl-sagonenyne (2), cis-sagonenyne (3), trans-thuwalenyne C (4), tinosallene A (11), tinosallene B (12) and obtusallene XI (17), were identified and their structures were elucidated by extensive analysis of their spectroscopic data. Compounds 1–3, 5–11, 13 and 15–32 were evaluated for their antibacterial activity against Staphylococcus aureus and Escherichia coli.
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Affiliation(s)
- Maria Harizani
- Section of Pharmacognosy and Chemistry of Natural Products, Department of Pharmacy, School of Health Sciences, National and Kapodistrian University of Athens, Panepistimiopolis Zografou, 15771 Athens, Greece
| | - Dafni-Ioanna Diakaki
- Section of Pharmacognosy and Chemistry of Natural Products, Department of Pharmacy, School of Health Sciences, National and Kapodistrian University of Athens, Panepistimiopolis Zografou, 15771 Athens, Greece
| | - Stamatios Perdikaris
- Section of Pharmacognosy and Chemistry of Natural Products, Department of Pharmacy, School of Health Sciences, National and Kapodistrian University of Athens, Panepistimiopolis Zografou, 15771 Athens, Greece
| | - Vassilios Roussis
- Section of Pharmacognosy and Chemistry of Natural Products, Department of Pharmacy, School of Health Sciences, National and Kapodistrian University of Athens, Panepistimiopolis Zografou, 15771 Athens, Greece
| | - Efstathia Ioannou
- Section of Pharmacognosy and Chemistry of Natural Products, Department of Pharmacy, School of Health Sciences, National and Kapodistrian University of Athens, Panepistimiopolis Zografou, 15771 Athens, Greece
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Minamida Y, Matsuura H, Ishii T, Miyagi M, Shinjo Y, Sato K, Kamada T, Mihara Y, Togashi I, Sugimoto K, Abe T, Kikuchi N, Suzuki M. New acetogenin katsuurallene from Laurencia saitoi collected from Katsuura, Japan. NATURAL PRODUCTS AND BIOPROSPECTING 2022; 12:10. [PMID: 35266062 PMCID: PMC8907347 DOI: 10.1007/s13659-022-00328-1] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/16/2021] [Accepted: 11/12/2021] [Indexed: 06/14/2023]
Abstract
We examined the chemical constitution of the red alga Laurencia saitoi Perestenko, collected from Katsuura, Boso Peninsula, Chiba Prefecture, Japan. This specimen produced a new polyhalogenated acetogenin, named katsuurallene (1), which structure was determined by the spectral methods, along with known diterpene, deoxyparguerol (2) and triterpene, thyrsiferol (3). In this paper we describe the structural elucidation of katsuurallene together with some biological activities.
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Affiliation(s)
- Yu Minamida
- Advanced Course of Applied Chemistry, National Institute of Technology, Asahikawa College, Shunkodai 2-2-1-6, Asahikawa, Hokkaido, 071-8142, Japan
- Department of Life Science, Graduate School of Engineering Science, Akita University, 1-1 Tegatagakuen-machi, Akita, 010-8502, Japan
| | - Hiroshi Matsuura
- Department of Materials Chemistry, National Institute of Technology, Asahikawa Collage, Shunkodai 2-2-1-6, Asahikawa, Hokkaido, 071-8142, Japan.
| | - Takahiro Ishii
- Department of Biosciences and Biotechnology, Faculty of Agriculture, University of the Ryukyus, 1 Senbaru, Nishihara, Okinawa, 903-0213, Japan
| | - Miyu Miyagi
- Department of Biosciences and Biotechnology, Faculty of Agriculture, University of the Ryukyus, 1 Senbaru, Nishihara, Okinawa, 903-0213, Japan
| | - Yuto Shinjo
- Department of Biosciences and Biotechnology, Faculty of Agriculture, University of the Ryukyus, 1 Senbaru, Nishihara, Okinawa, 903-0213, Japan
| | - Kosuke Sato
- Department of Materials and Life Science, Faculty of Science and Technology, Shizuoka Institute of Science and Technology, 2200-2 Toyosawa, Fukuroi, Shizuoka, 437-8555, Japan
| | - Takashi Kamada
- Department of Materials and Life Science, Faculty of Science and Technology, Shizuoka Institute of Science and Technology, 2200-2 Toyosawa, Fukuroi, Shizuoka, 437-8555, Japan
| | - Yoshihiro Mihara
- Department of Medicinal Chemistry, Faculty of Pharmaceutical Sciences, Hokkaido University of Science, Maeda 7, 15-4-1, Teine-ku, Sapporo, Hokkaido, 006-8590, Japan
| | - Iwao Togashi
- Department of Materials Chemistry, National Institute of Technology, Asahikawa Collage, Shunkodai 2-2-1-6, Asahikawa, Hokkaido, 071-8142, Japan
| | - Keisuke Sugimoto
- Department of Materials Chemistry, National Institute of Technology, Asahikawa Collage, Shunkodai 2-2-1-6, Asahikawa, Hokkaido, 071-8142, Japan
| | - Tsuyoshi Abe
- The Hokkaido University Museum, Hokkaido University, N10 W8, Kita-ku, Sapporo, Hokkaido, 060-0810, Japan
| | - Norio Kikuchi
- Coastal Branch of Natural History Museum and Institute, Chiba,, 123 Yoshio, Katsuura, Chiba, 299-5242, Japan
| | - Minoru Suzuki
- Coastal Branch of Natural History Museum and Institute, Chiba,, 123 Yoshio, Katsuura, Chiba, 299-5242, Japan
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9
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Modelling Antifouling compounds of Macroalgal Holobionts in Current and Future pH Conditions. J Chem Ecol 2022; 48:455-473. [DOI: 10.1007/s10886-021-01340-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2021] [Revised: 11/29/2021] [Accepted: 12/10/2021] [Indexed: 10/19/2022]
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10
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Effective Synthesis and Antifouling Activity of Dolastatin 16 Derivatives. Mar Drugs 2022; 20:md20020124. [PMID: 35200652 PMCID: PMC8876244 DOI: 10.3390/md20020124] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2021] [Revised: 02/01/2022] [Accepted: 02/01/2022] [Indexed: 11/17/2022] Open
Abstract
Some derivatives of dolastatin 16, a depsipeptide natural product first obtained from the sea hare Dolabella auricularia, were synthesized through second-generation synthesis of two unusual amino acids, dolaphenvaline and dolamethylleuine. The second-generation synthesis enabled derivatizations such as functionalization of the aromatic ring in dolaphenvaline. The derivatives of fragments and whole structures were evaluated for antifouling activity against the cypris larvae of Amphibalanus amphitrite. Small fragments inhibited the settlement of the cypris larvae at potent to moderate concentrations (EC50 = 0.60-4.62 μg/mL), although dolastatin 16 with a substituent on the aromatic ring (24) was much less potent than dolastatin 16.
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11
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Sato K, Kaneko K, Kamekawa T, Taba K, Ishigami S, Wada M, Ishii T, Abe T, Kamada T, Suzuki M. Two New Halogenated Compounds from the Marine Red Alga Laurencia nipponica Yamada from the Kunashiri and Etorofu Islands. Chem Biodivers 2021; 18:e2100397. [PMID: 34302322 DOI: 10.1002/cbdv.202100397] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2021] [Accepted: 07/22/2021] [Indexed: 11/06/2022]
Abstract
The red alga Laurencia nipponica comprises various chemical races distributed relative to the ocean current in Japanese coastal areas. We investigated the chemical compositions and chemical races of L. nipponica distributed from the Kunashiri and Etorofu Islands, the confluence of the Soya warm current and Oya-shio cold current. Two new halogenated secondary metabolites, deacetylneonipponallene (1) and neopacifenol (2), along with four known compounds, deoxyprepacifenol (3), pacifenol (4), halo-chamigrene diether (5), and isolaurallene (6) were isolated from L. nipponica collected at Chikappunai, Kunashiri Island, while Zaimokuiwa (Kunashiri Island) and Sana (Etorofu Island) populations contained 3, 7-hydroxylaurene (7), 2,10-dibromo-3-chloro-9-hydroxy-α-chamigrene (8), and (3Z)-laurefucin (9). The structures of 1 and 2 were established using spectroscopic methods. The chemical races of L. nipponica distributed in this area were divided into 6- and 9-producing races. Interestingly, both races contained 4 as an additional race-index, as well as its derivatives, 2 and 5. To the best of our knowledge, this is the first example of a race comprising a mixture of two race-index compounds, suggesting that the convergence of two currents causes the production of new and diverse chemical races in this species.
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Affiliation(s)
- Kosuke Sato
- Faculty of Science and Technology, Shizuoka Institute of Science and Technology, 2200-2 Toyosawa, Fukuroi, Shizuoka, 437-8555, Japan
| | - Kensuke Kaneko
- Graduate School of Pharmaceutical Sciences, Kyoto University, Kyoto, 606-8501, Japan
| | - Tsuyoshi Kamekawa
- Faculty of Science and Technology, Shizuoka Institute of Science and Technology, 2200-2 Toyosawa, Fukuroi, Shizuoka, 437-8555, Japan
| | - Kanako Taba
- Faculty of Agriculture, University of the Ryukyus, Senbaru 1, Nishihara, Okinawa, 903-0213, Japan
| | - Shinnosuke Ishigami
- Faculty of Agriculture, University of the Ryukyus, Senbaru 1, Nishihara, Okinawa, 903-0213, Japan
| | - Masahiro Wada
- Faculty of Agriculture, University of the Ryukyus, Senbaru 1, Nishihara, Okinawa, 903-0213, Japan
| | - Takahiro Ishii
- Faculty of Agriculture, University of the Ryukyus, Senbaru 1, Nishihara, Okinawa, 903-0213, Japan
| | - Tsuyoshi Abe
- The Hokkaido University Museum, Hokkaido University, Sapporo, 060-0810, Japan
| | - Takashi Kamada
- Faculty of Science and Technology, Shizuoka Institute of Science and Technology, 2200-2 Toyosawa, Fukuroi, Shizuoka, 437-8555, Japan
| | - Minoru Suzuki
- Coastal Branch of Natural History Museum and Institute, Chiba, 123 Yoshio, Katsuura, Chiba, 299-5242, Japan
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12
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Minamida Y, Matsuura H, Ishii T, Sato K, Kamada T, Kato A, Yamagishi Y, Abe T, Kikuchi N, Suzuki M. Chemical composition of Laurencia spp. collected from the Seto Inland Sea of Japan. BIOCHEM SYST ECOL 2021. [DOI: 10.1016/j.bse.2021.104259] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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13
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Umezawa T, Mizutani N, Matsuo K, Tokunaga Y, Matsuda F, Nehira T. Assignment of Absolute Configuration of Bromoallenes by Vacuum-Ultraviolet Circular Dichroism (VUVCD). Molecules 2021; 26:molecules26051296. [PMID: 33673650 PMCID: PMC7957760 DOI: 10.3390/molecules26051296] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2021] [Revised: 02/22/2021] [Accepted: 02/22/2021] [Indexed: 12/03/2022] Open
Abstract
A new application of vacuum-ultraviolet circular dichroism (VUVCD), which enables the measurement of CD spectra in the vacuum-ultraviolet region (140–200 nm), for the assignment of the absolute configurations of bromoallenes is described. Bromoallene moieties are found in natural products obtained from many marine organisms. To date, the absolute configuration of bromoallenes has been assigned almost exclusively with Lowe’s rule, which is based on specific rotation. However, exceptions to Lowe’s rule have been reported arising from the presence of other substituents with large specific rotations. For the unambiguous assignment of the absolute configuration of the bromoallene moiety with its characteristic absorption wavelength at 180–190 nm due to the π–π* transition, VUVCD was applied to four pairs of bromoallene diastereomers prepared by modifying the synthetic scheme of omaezallene. The VUVCD spectra clearly showed positive or negative Cotton effects around 180–190 nm according to the configuration of the bromoallene employed, revealing the potential of VUVCD for determining absolute stereochemistry.
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Affiliation(s)
- Taiki Umezawa
- Division of Environmental Materials Science, Graduate School of Environmental Science, Hokkaido University, N10W5, Kita-ku, Sapporo 060-0810, Japan; (N.M.); (F.M.)
- Correspondence: (T.U.); (T.N.)
| | - Nakaba Mizutani
- Division of Environmental Materials Science, Graduate School of Environmental Science, Hokkaido University, N10W5, Kita-ku, Sapporo 060-0810, Japan; (N.M.); (F.M.)
| | - Koichi Matsuo
- Hiroshima Synchrotron Radiation Center (HiSOR), Hiroshima University, 2-313 Kagamiyama, Higashi-Hiroshima 739-0046, Japan;
| | - Yuugo Tokunaga
- Faculty of Integrated Arts and Sciences, Hiroshima University, 1-7-1 Kagamiyama, Higashi-Hiroshima 739-8521, Japan;
| | - Fuyuhiko Matsuda
- Division of Environmental Materials Science, Graduate School of Environmental Science, Hokkaido University, N10W5, Kita-ku, Sapporo 060-0810, Japan; (N.M.); (F.M.)
| | - Tatsuo Nehira
- Faculty of Integrated Arts and Sciences, Hiroshima University, 1-7-1 Kagamiyama, Higashi-Hiroshima 739-8521, Japan;
- Graduate School of Integrated Sciences for Life, Hiroshima University, 1-7-1 Kagamiyama, Higashi-Hiroshima 739-8521, Japan
- Correspondence: (T.U.); (T.N.)
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14
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Evaluation of Antifouling Potential and Ecotoxicity of Secondary Metabolites Derived from Red Algae of the Genus Laurencia. Mar Drugs 2019; 17:md17110646. [PMID: 31744063 PMCID: PMC6891695 DOI: 10.3390/md17110646] [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: 11/02/2019] [Revised: 11/13/2019] [Accepted: 11/15/2019] [Indexed: 02/07/2023] Open
Abstract
Red algae of the genus Laurencia are known to biosynthesize and secrete an immense variety of secondary metabolites possessing a spectrum of biological activities against bacteria, invertebrates and mammalian cell lines. Following a rigorous cross-species screening process, herein we report the antifouling potential of 25 secondary metabolites derived from species of the genus Laurencia, as well as the thorough evaluation of the ecotoxicity of selected metabolites against non-target marine arthropods and vertebrate cell lines. A number of these secondary metabolites exhibited potent antifouling activity and performed well in all screening tests. Our results show that perforenol (9) possesses similar antifouling activity with that already described for bromosphaerol, which is used herein as a benchmark.
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15
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Umezawa T. Total Synthesis of Omaezallene toward Structure Determination. J SYN ORG CHEM JPN 2018. [DOI: 10.5059/yukigoseikyokaishi.76.426] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Taiki Umezawa
- Faculty of Environmental Earth Science, Hokkaido University
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16
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Casalme LO, Yamauchi A, Sato A, Petitbois JG, Nogata Y, Yoshimura E, Okino T, Umezawa T, Matsuda F. Total synthesis and biological activity of dolastatin 16. Org Biomol Chem 2018; 15:1140-1150. [PMID: 28074955 DOI: 10.1039/c6ob02657e] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The total synthesis of dolastatin 16, a macrocyclic depsipeptide first isolated from the sea hare Dolabella auricularia as a potential antineoplastic metabolite by Pettit et al., was achieved in a convergent manner. Dolastatin 16 was reported by Tan to exhibit strong antifouling activity, and thus shows promise for inhibiting the attachment of marine benthic organisms such as Amphibalanus amphitrite to ships and submerged artificial structures. Therefore, dolastatin 16 is a potential compound for a new, environmentally friendly antifouling material to replace banned tributyltin-based antifouling paints. The synthesis of dolastatin 16 involved the use of prolinol to prevent formation of a diketopiperazine composed of l-proline and N-methyl-d-valine during peptide coupling. This strategy for the elongation of peptide chains allowed the efficient and scalable synthesis of one segment, which was subsequently coupled with a second segment and cyclized to form the macrocyclic framework of dolastatin 16. The synthetic dolastatin 16 exhibited potent antifouling activity similar to that of natural dolastatin 16 toward cypris larvae of Amphibalanus amphitrite.
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Affiliation(s)
- Loida O Casalme
- Graduate School of Environmental Science, Hokkaido University, N10W5 Sapporo 060-0810, Japan.
| | - Arisa Yamauchi
- Graduate School of Environmental Science, Hokkaido University, N10W5 Sapporo 060-0810, Japan.
| | - Akinori Sato
- Graduate School of Environmental Science, Hokkaido University, N10W5 Sapporo 060-0810, Japan.
| | - Julie G Petitbois
- Graduate School of Environmental Science, Hokkaido University, N10W5 Sapporo 060-0810, Japan.
| | - Yasuyuki Nogata
- Environmental Science Research Laboratory, Central Research Institute of Electric Power Industry, 1646 Abiko, Abiko, Chiba 270-1194, Japan
| | | | - Tatsufumi Okino
- Graduate School of Environmental Science, Hokkaido University, N10W5 Sapporo 060-0810, Japan.
| | - Taiki Umezawa
- Graduate School of Environmental Science, Hokkaido University, N10W5 Sapporo 060-0810, Japan.
| | - Fuyuhiko Matsuda
- Graduate School of Environmental Science, Hokkaido University, N10W5 Sapporo 060-0810, Japan.
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17
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Chen R, Li L, Lin N, Zhou R, Hua Y, Deng H, Zhang Y. Asymmetric Total Synthesis of (+)-Majusculoic Acid via a Dimerization-Dedimerization Strategy and Absolute Configuration Assignment. Org Lett 2018; 20:1477-1480. [PMID: 29446640 DOI: 10.1021/acs.orglett.8b00349] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The first total synthesis of (+)-majusculoic acid, the enantiomer of naturally occurring antifungal cyclopropane fatty acid (-)-majusculoic acid, was accomplished in 13 steps, leading to the assignment of the absolute configuration of the natural product. The synthesis featured a ring closing metathesis dimerization, a conformationally controlled cyclopropanation, a dedimerization, and a bromoolefination.
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Affiliation(s)
- Renzhi Chen
- Department of Chemistry and Key Laboratory of Chemical Biology of Fujian Province, iChEM, College of Chemistry and Chemical Engineering, Xiamen University , Xiamen, Fujian 361005, China
| | - Linbin Li
- Department of Chemistry and Key Laboratory of Chemical Biology of Fujian Province, iChEM, College of Chemistry and Chemical Engineering, Xiamen University , Xiamen, Fujian 361005, China
| | - Na Lin
- Department of Chemistry and Key Laboratory of Chemical Biology of Fujian Province, iChEM, College of Chemistry and Chemical Engineering, Xiamen University , Xiamen, Fujian 361005, China
| | - Rong Zhou
- Department of Chemistry and Key Laboratory of Chemical Biology of Fujian Province, iChEM, College of Chemistry and Chemical Engineering, Xiamen University , Xiamen, Fujian 361005, China
| | - Yuhui Hua
- Department of Chemistry and Key Laboratory of Chemical Biology of Fujian Province, iChEM, College of Chemistry and Chemical Engineering, Xiamen University , Xiamen, Fujian 361005, China
| | - Hejun Deng
- Department of Chemistry and Key Laboratory of Chemical Biology of Fujian Province, iChEM, College of Chemistry and Chemical Engineering, Xiamen University , Xiamen, Fujian 361005, China
| | - Yandong Zhang
- Department of Chemistry and Key Laboratory of Chemical Biology of Fujian Province, iChEM, College of Chemistry and Chemical Engineering, Xiamen University , Xiamen, Fujian 361005, China
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18
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Burns AS, Ross CC, Rychnovsky SD. Heteroatom-Directed Acylation of Secondary Alcohols To Assign Absolute Configuration. J Org Chem 2018; 83:2504-2515. [PMID: 29424546 DOI: 10.1021/acs.joc.7b03156] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Birman's HBTM catalyst is effective for the enantioselective acylation and kinetic resolution of benzylic secondary alcohols. The enantioselective acylation has now been extended to secondary alcohols bearing electron-withdrawing groups such as halides and other heteroatoms. The level of selectivity is modest to good and is sufficient for determining configuration using the competing enantioselective conversion method. A mathematical analysis identifies conditions for achieving maximum differences in conversion and, consequently, assigning configuration with greater confidence. The new method is effective for halohydrins and secondary-tertiary 1,2-diols and was used to confirm the configuration of two inoterpene natural products.
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Affiliation(s)
- Alexander S Burns
- Department of Chemistry, 1102 Natural Sciences II, University of California at Irvine , Irvine, California 92697, United States
| | - Christopher C Ross
- Department of Chemistry, 1102 Natural Sciences II, University of California at Irvine , Irvine, California 92697, United States
| | - Scott D Rychnovsky
- Department of Chemistry, 1102 Natural Sciences II, University of California at Irvine , Irvine, California 92697, United States
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19
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Takamura H, Katsube T, Okamoto K, Kadota I. Total Synthesis of Two Possible Diastereomers of Natural 6-Chlorotetrahydrofuran Acetogenin and Its Stereostructural Elucidation. Chemistry 2017; 23:17191-17194. [DOI: 10.1002/chem.201703234] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2017] [Indexed: 01/20/2023]
Affiliation(s)
- Hiroyoshi Takamura
- Department of Chemistry, Graduate School of Natural Science and Technology; Okayama University; 3-1-1 Tsushimanaka, Kita-ku Okayama 700-8530 Japan
| | - Tomoya Katsube
- Department of Chemistry, Graduate School of Natural Science and Technology; Okayama University; 3-1-1 Tsushimanaka, Kita-ku Okayama 700-8530 Japan
| | - Kazuki Okamoto
- Department of Chemistry, Graduate School of Natural Science and Technology; Okayama University; 3-1-1 Tsushimanaka, Kita-ku Okayama 700-8530 Japan
| | - Isao Kadota
- Department of Chemistry, Graduate School of Natural Science and Technology; Okayama University; 3-1-1 Tsushimanaka, Kita-ku Okayama 700-8530 Japan
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20
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Saha M, Goecke F, Bhadury P. Minireview: algal natural compounds and extracts as antifoulants. JOURNAL OF APPLIED PHYCOLOGY 2017; 30:1859-1874. [PMID: 29899600 PMCID: PMC5982446 DOI: 10.1007/s10811-017-1322-0] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/11/2017] [Revised: 10/17/2017] [Accepted: 10/17/2017] [Indexed: 05/02/2023]
Abstract
Marine biofouling is a paramount phenomenon in the marine environment and causes serious problems to maritime industries worldwide. Marine algae are known to produce a wide variety of chemical compounds with antibacterial, antifungal, antialgal, and anti-macrofouling properties, inhibiting the settlement and growth of other marine fouling organisms. Significant investigations and progress have been made in this field in the last two decades and several antifouling extracts and compounds have been isolated from micro- and macroalgae. In this minireview, we have summarized and evaluated antifouling compounds isolated and identified from macroalgae and microalgae between January 2010 and June 2016. Future directions for their commercialization through metabolic engineering and industrial scale up have been discussed. Upon comparing biogeographical regions, investigations from Southeast Asian waters were found to be rather scarce. Thus, we have also discussed the need to conduct more chemical ecology based research in relatively less explored areas with high algal biodiversity like Southeast Asia.
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Affiliation(s)
- Mahasweta Saha
- Benthic Ecology, Helmholtz Center for Ocean Research, Düsternbrooker weg, 24105 Kiel, Germany
- Present Address: School of Biological Science, University of Essex, Colchester, CO 43 SQ, UK
| | - Franz Goecke
- Department of Plant and Environmental Science (IPV), Norwegian University of Life Sciences (NMBU), Ås, Norway
| | - Punyasloke Bhadury
- Integrative Taxonomy and Microbial Ecology Research Group, Department of Biological Sciences, Indian Institute of Science Education and Research Kolkata, Mohanpur, Nadia, West Bengal 741246 India
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21
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Dahms HU, Dobretsov S. Antifouling Compounds from Marine Macroalgae. Mar Drugs 2017; 15:md15090265. [PMID: 28846625 PMCID: PMC5618404 DOI: 10.3390/md15090265] [Citation(s) in RCA: 58] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2017] [Revised: 06/29/2017] [Accepted: 07/12/2017] [Indexed: 12/14/2022] Open
Abstract
Marine macroalgae produce a wide variety of biologically-active metabolites that have been developed into commercial products, such as antibiotics, immunosuppressive, anti-inflammatory, cytotoxic agents, and cosmetic products. Many marine algae remain clean over longer periods of time, suggesting their strong antifouling potential. Isolation of biogenic compounds and the determination of their structure could provide leads for the development of environmentally-friendly antifouling paints. Isolated substances with potent antifouling activity belong to fatty acids, lipopeptides, amides, alkaloids, lactones, steroids, terpenoids, and pyrroles. It is unclear as yet to what extent symbiotic microorganisms are involved in the synthesis of these compounds. Algal secondary metabolites have the potential to be produced commercially using genetic and metabolic engineering techniques. This review provides an overview of publications from 2010 to February 2017 about antifouling activity of green, brown, and red algae. Some researchers were focusing on antifouling compounds of brown macroalgae, while metabolites of green algae received less attention. Several studies tested antifouling activity against bacteria, microalgae and invertebrates, but in only a few studies was the quorum sensing inhibitory activity of marine macroalgae tested. Rarely, antifouling compounds from macroalgae were isolated and tested in an ecologically-relevant way.
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Affiliation(s)
- Hans Uwe Dahms
- Department of Biomedical Science and Environmental Biology, Kaohsiung Medical University, No. 100, Shin-Chuan 1st Road, Kaohsiung 80708, Taiwan.
- Department of Marine Biotechnology and Resources, National Sun Yat-sen University, No. 70, Lienhai Road, Kaohsiung 80424, Taiwan.
- Research Center for Environmental Medicine, Kaohsiung Medical University, Kaohsiung 80708, Taiwan.
| | - Sergey Dobretsov
- Center of Excellence in Marine Biotechnology, Sultan Qaboos University, Muscat 123, Oman.
- Department of Marine Science and Fisheries, College of Agricultural and Marine Sciences, Sultan Qaboos University, Muscat 123, Oman.
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22
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New Marine Antifouling Compounds from the Red Alga Laurencia sp. Mar Drugs 2017; 15:md15090267. [PMID: 28846653 PMCID: PMC5618406 DOI: 10.3390/md15090267] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2017] [Revised: 08/20/2017] [Accepted: 08/23/2017] [Indexed: 02/06/2023] Open
Abstract
Six new compounds, omaezol, intricatriol, hachijojimallenes A and B, debromoaplysinal, and 11,12-dihydro-3-hydroxyretinol have been isolated from four collections of Laurencia sp. These structures were determined by MS and NMR analyses. Their antifouling activities were evaluated together with eight previously known compounds isolated from the same samples. In particular, omaezol and hachijojimallene A showed potent activities (EC50 = 0.15–0.23 µg/mL) against larvae of the barnacle Amphibalanus amphitrite.
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23
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Design, Synthesis, and Antifouling Activity of Glucosamine-Based Isocyanides. Mar Drugs 2017; 15:md15070203. [PMID: 28661419 PMCID: PMC5532645 DOI: 10.3390/md15070203] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2017] [Revised: 06/12/2017] [Accepted: 06/21/2017] [Indexed: 11/30/2022] Open
Abstract
Biofouling, an undesirable accumulation of organisms on sea-immersed structures such as ship hulls and fishing nets, is a serious economic issue whose effects include oil wastage and clogged nets. Organotin compounds were utilized since the 1960s as an antifouling material; however, the use of such compounds was later banned by the International Maritime Organization (IMO) due to their high toxicity toward marine organisms, resulting in masculinization and imposex. Since the ban, there have been extensive efforts to develop environmentally benign antifoulants. Natural antifouling products obtained from marine creatures have been the subject of considerable attention due to their potent antifouling activity and low toxicity. These antifouling compounds often contain isocyano groups, which are well known to have natural antifouling properties. On the basis of our previous total synthesis of natural isocyanoterpenoids, we envisaged the installation of an isocyano functional group onto glucosamine to produce an environmentally friendly antifouling material. This paper describes an effective synthetic method for various glucosamine-based isocyanides and evaluation of their antifouling activity and toxicity against cypris larvae of the barnacle Amphibalanus amphitrite. Glucosamine isocyanides with an ether functionality at the anomeric position exhibited potent antifouling activity, with EC50 values below 1 μg/mL, without detectable toxicity even at a high concentration of 10 μg/mL. Two isocyanides had EC50 values of 0.23 and 0.25 μg/mL, comparable to that of CuSO4, which is used as a fouling inhibitor (EC50 = 0.27 μg/mL).
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24
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Nitelet A, Jouvin K, Evano G. Development of a general copper-catalyzed vinylic Finkelstein reaction—application to the synthesis of the C1–C9 fragment of laingolide B. Tetrahedron 2016. [DOI: 10.1016/j.tet.2016.07.018] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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25
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Shin I, Lee D, Kim H. Substrate-Controlled Asymmetric Total Synthesis and Structure Revision of (−)-Bisezakyne A. Org Lett 2016; 18:4420-3. [DOI: 10.1021/acs.orglett.6b02239] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Iljin Shin
- College of Pharmacy and Research
Institute of Pharmaceutical Science and Technology (RIPST), Ajou University, Suwon 16499, Republic of Korea
| | - Dongjoo Lee
- College of Pharmacy and Research
Institute of Pharmaceutical Science and Technology (RIPST), Ajou University, Suwon 16499, Republic of Korea
| | - Hyoungsu Kim
- College of Pharmacy and Research
Institute of Pharmaceutical Science and Technology (RIPST), Ajou University, Suwon 16499, Republic of Korea
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26
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de la Torre A, Cuyamendous C, Bultel-Poncé V, Durand T, Galano JM, Oger C. Recent advances in the synthesis of tetrahydrofurans and applications in total synthesis. Tetrahedron 2016. [DOI: 10.1016/j.tet.2016.06.076] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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27
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Jang H, Shin I, Lee D, Kim H, Kim D. Stereoselective Substrate-Controlled Asymmetric Syntheses of both 2,5-cis
- and 2,5-trans
-Tetrahydrofuranoid Oxylipids: Stereodivergent Intramolecular Amide Enolate Alkylation. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201600637] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Hongjun Jang
- College of Pharmacy; Ajou University; Suwon 16499 Korea
| | - Iljin Shin
- College of Pharmacy; Ajou University; Suwon 16499 Korea
| | - Dongjoo Lee
- College of Pharmacy; Ajou University; Suwon 16499 Korea
| | - Hyoungsu Kim
- College of Pharmacy; Ajou University; Suwon 16499 Korea
| | - Deukjoon Kim
- College of Pharmacy; Seoul National University; Seoul 08826 Korea
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28
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Jang H, Shin I, Lee D, Kim H, Kim D. Stereoselective Substrate-Controlled Asymmetric Syntheses of both 2,5-cis
- and 2,5-trans
-Tetrahydrofuranoid Oxylipids: Stereodivergent Intramolecular Amide Enolate Alkylation. Angew Chem Int Ed Engl 2016; 55:6497-501. [DOI: 10.1002/anie.201600637] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2016] [Revised: 03/10/2016] [Indexed: 11/09/2022]
Affiliation(s)
- Hongjun Jang
- College of Pharmacy; Ajou University; Suwon 16499 Korea
| | - Iljin Shin
- College of Pharmacy; Ajou University; Suwon 16499 Korea
| | - Dongjoo Lee
- College of Pharmacy; Ajou University; Suwon 16499 Korea
| | - Hyoungsu Kim
- College of Pharmacy; Ajou University; Suwon 16499 Korea
| | - Deukjoon Kim
- College of Pharmacy; Seoul National University; Seoul 08826 Korea
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29
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Abstract
This review covers the literature published in 2014 for marine natural products (MNPs), with 1116 citations (753 for the period January to December 2014) 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 (1378 in 456 papers for 2014), together with the relevant biological activities, source organisms and country of origin. Reviews, biosynthetic studies, first syntheses, and syntheses that lead to the revision of structures or stereochemistries, have been included.
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Affiliation(s)
- John W Blunt
- Department of Chemistry, University of Canterbury, Christchurch, New Zealand.
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30
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Affiliation(s)
- Taiki Umezawa
- Faculty of Environmental Earth Science, Hokkaido University
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31
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Harizani M, Ioannou E, Roussis V. The Laurencia Paradox: An Endless Source of Chemodiversity. PROGRESS IN THE CHEMISTRY OF ORGANIC NATURAL PRODUCTS 2016; 102:91-252. [PMID: 27380407 DOI: 10.1007/978-3-319-33172-0_2] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Nature, the most prolific source of biological and chemical diversity, has provided mankind with treatments for health problems since ancient times and continues to be the most promising reservoir of bioactive chemicals for the development of modern drugs. In addition to the terrestrial organisms that still remain a promising source of new bioactive metabolites, the marine environment, covering approximately 70% of the Earth's surface and containing a largely unexplored biodiversity, offers an enormous resource for the discovery of novel compounds. According to the MarinLit database, more than 27,000 metabolites from marine macro- and microorganisms have been isolated to date providing material and key structures for the development of new products in the pharmaceutical, food, cosmeceutical, chemical, and agrochemical sectors. Algae, which thrive in the euphotic zone, were among the first marine organisms that were investigated as sources of food, nutritional supplements, soil fertilizers, and bioactive metabolites.Red algae of the genus Laurencia are accepted unanimously as one of the richest sources of new secondary metabolites. Their cosmopolitan distribution, along with the chemical variation influenced to a significant degree by environmental and genetic factors, have resulted in an endless parade of metabolites, often featuring multiple halogenation sites.The present contribution, covering the literature until August 2015, offers a comprehensive view of the chemical wealth and the taxonomic problems currently impeding chemical and biological investigations of the genus Laurencia. Since mollusks feeding on Laurencia are, in many cases, bioaccumulating, and utilize algal metabolites as chemical weaponry against natural enemies, metabolites of postulated dietary origin of sea hares that feed on Laurencia species are also included in the present review. Altogether, 1047 secondary metabolites, often featuring new carbocyclic skeletons, have been included.The chapter addresses: (1) the "Laurencia complex", the botanical description and the growth and population dynamics of the genus, as well as its chemical diversity and ecological relations; (2) the secondary metabolites, which are organized according to their chemical structures and are classified into sesquiterpenes, diterpenes, triterpenes, acetogenins, indoles, aromatic compounds, steroids, and miscellaneous compounds, as well as their sources of isolation which are depicted in tabulated form, and (3) the biological activity organized according to the biological target and the ecological functions of Laurencia metabolites.
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Affiliation(s)
- Maria Harizani
- Department of Pharmacognosy and Chemistry of Natural Products, Faculty of Pharmacy, National and Kapodistrian University of Athens, Panepistimiopolis Zografou, Athens, 15771, Greece
| | - Efstathia Ioannou
- Department of Pharmacognosy and Chemistry of Natural Products, Faculty of Pharmacy, National and Kapodistrian University of Athens, Panepistimiopolis Zografou, Athens, 15771, Greece.
| | - Vassilios Roussis
- Department of Pharmacognosy and Chemistry of Natural Products, Faculty of Pharmacy, National and Kapodistrian University of Athens, Panepistimiopolis Zografou, Athens, 15771, Greece.
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Yamakawa M, Kurachi T, Yoshikawa Y, Arisawa M, Okino Y, Suzuki K, Fujioka H. Stereoselective Construction of 2,7-Disubstituted fused-Bis Tetrahydrofuran Skeletons: Biomimetic-Type Synthesis and Biological Evaluation of (±)- and (−)-Aplysiallene and Their Derivatives. J Org Chem 2015; 80:10261-77. [DOI: 10.1021/acs.joc.5b01882] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Maki Yamakawa
- Graduate
School of Pharmaceutical Sciences, Osaka University, 1-6, Yamada-oka, Suita, Osaka 565-0871, Japan
| | - Takeshi Kurachi
- Graduate
School of Pharmaceutical Sciences, Osaka University, 1-6, Yamada-oka, Suita, Osaka 565-0871, Japan
| | - Yusuke Yoshikawa
- Graduate
School of Pharmaceutical Sciences, Osaka University, 1-6, Yamada-oka, Suita, Osaka 565-0871, Japan
| | - Mitsuhiro Arisawa
- Graduate
School of Pharmaceutical Sciences, Osaka University, 1-6, Yamada-oka, Suita, Osaka 565-0871, Japan
| | - Yuichiro Okino
- Graduate
School of Dental Medicine, Hokkaido University, Kita-13 Nishi-7, Kitaku, Sapporo, Hokkaido 060-8586, Japan
| | - Kuniaki Suzuki
- Graduate
School of Dental Medicine, Hokkaido University, Kita-13 Nishi-7, Kitaku, Sapporo, Hokkaido 060-8586, Japan
| | - Hiromichi Fujioka
- Graduate
School of Pharmaceutical Sciences, Osaka University, 1-6, Yamada-oka, Suita, Osaka 565-0871, Japan
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Gribble GW. Biological Activity of Recently Discovered Halogenated Marine Natural Products. Mar Drugs 2015; 13:4044-136. [PMID: 26133553 PMCID: PMC4515607 DOI: 10.3390/md13074044] [Citation(s) in RCA: 176] [Impact Index Per Article: 19.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2015] [Revised: 06/15/2015] [Accepted: 06/17/2015] [Indexed: 01/08/2023] Open
Abstract
This review presents the biological activity-antibacterial, antifungal, anti-parasitic, antiviral, antitumor, antiinflammatory, antioxidant, and enzymatic activity-of halogenated marine natural products discovered in the past five years. Newly discovered examples that do not report biological activity are not included.
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Affiliation(s)
- Gordon W Gribble
- Department of Chemistry, Dartmouth College, Hanover, NH 03755, USA.
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Umezawa T, Sato A, Ameda Y, Casalme LO, Matsuda F. Synthetic study on dolastatin 16: concise and scalable synthesis of two unusual amino acid units. Tetrahedron Lett 2015. [DOI: 10.1016/j.tetlet.2014.11.054] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
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Qian PY, Li Z, Xu Y, Li Y, Fusetani N. Mini-review: marine natural products and their synthetic analogs as antifouling compounds: 2009-2014. BIOFOULING 2015; 31:101-22. [PMID: 25622074 DOI: 10.1080/08927014.2014.997226] [Citation(s) in RCA: 114] [Impact Index Per Article: 12.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
This review covers 214 marine natural compounds and 23 of their synthetic analogs, which were discovered and/or synthesized from mid-2009 to August 2014. The antifouling (AF) compounds reported have medium to high bioactivity (with a threshold of EC(50) < 15.0 mg ml(-1)). Among these compounds, 82 natural compounds were identified as new structures. All the compounds are marine-derived, demonstrating that marine organisms are prolific and promising sources of natural products that may be developed as environmentally friendly antifoulants. However, this mini-review excludes more than 200 compounds that were also reported as AF compounds but with rather weak bioactivity during the same period. Also excluded are terrestrial-derived AF compounds reported during the last five years. A brief discussion on current challenges in AF compound research is also provided to reflect the authors' own views in terms of future research directions.
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Affiliation(s)
- Pei-Yuan Qian
- a Division of Life Science , Hong Kong University of Science and Technology , HKSAR , PR China
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