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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: 3] [Impact Index Per Article: 3.0] [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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2
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He ZL, Zhang Y, Chen ZC, Du W, Chen YC. Cascade Multicomponent Assemblies Involving 1,3-Enynes via Auto-Tandem Palladium Catalysis. Org Lett 2022; 24:6326-6330. [PMID: 35997593 DOI: 10.1021/acs.orglett.2c02544] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Here we report a three-component auto-tandem reaction of 1,3-enyne-tethered carbonyls, organoboronic reagents, and suitable nucleophiles catalyzed by palladium, proceeding through consecutive intramolecular vinylogous addition, Suzuki coupling, and allylic alkylation. This process exhibited high chemo- and regioselectivity with 1,3,4-trifunctionalization of the 1,3-enyne motif, and a wide range of 2H-chromenes, 1,2-dihydroquinolines, benzo[b]oxepines, 1,7-annulated indoles, and other frameworks were efficiently constructed in fair to good yields and E/Z selectivity.
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Affiliation(s)
- Ze-Liang He
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry and Sichuan Province and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu 610041, China
| | - Yi Zhang
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry and Sichuan Province and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu 610041, China
| | - Zhi-Chao Chen
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry and Sichuan Province and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu 610041, China
| | - Wei Du
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry and Sichuan Province and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu 610041, China
| | - Ying-Chun Chen
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry and Sichuan Province and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu 610041, China.,College of Pharmacy, Third Military Medical University, Shapingba, Chongqing 400038, China
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3
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Ming XX, Wu S, Tian ZY, Song JW, Zhang CP. Pd/Cu-Catalyzed Vinylation of Terminal Alkynes with (2-Bromoethyl)diphenylsulfonium Triflate. Org Lett 2021; 23:6795-6800. [PMID: 34474570 DOI: 10.1021/acs.orglett.1c02379] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The potential of (2-bromoethyl)diphenylsulfonium triflate to be a powerful vinylation reagent was determined by the Sonogashira cross-coupling reactions with terminal alkynes. The vinylation proceeded smoothly at 25 °C under Pd/Cu catalysis to afford a variety of 1- and 2-unsubstituted 1,3-enynes in moderate to excellent yields. This protocol represents the first application of (2-haloethyl)diphenylsulfonium triflate as a CH═CH2 transfer source in organic synthesis.
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Affiliation(s)
- Xiao-Xia Ming
- School of Chemistry, Chemical Engineering and Life Science, Wuhan University of Technology, Wuhan, Hubei 430070, China
| | - Shuai Wu
- School of Chemistry, Chemical Engineering and Life Science, Wuhan University of Technology, Wuhan, Hubei 430070, China
| | - Ze-Yu Tian
- School of Chemistry, Chemical Engineering and Life Science, Wuhan University of Technology, Wuhan, Hubei 430070, China
| | - Jia-Wei Song
- School of Chemistry, Chemical Engineering and Life Science, Wuhan University of Technology, Wuhan, Hubei 430070, China
| | - Cheng-Pan Zhang
- School of Chemistry, Chemical Engineering and Life Science, Wuhan University of Technology, Wuhan, Hubei 430070, China
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4
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Jang H, Kwak SY, Lee D, Alegre-Requena JV, Kim H, Paton RS, Kim D. Asymmetric Total Synthesis and Determination of the Absolute Configuration of (+)-Srilankenyne via Sequence-Sensitive Halogenations Guided by Conformational Analysis. Org Lett 2021; 23:1321-1326. [PMID: 33534589 DOI: 10.1021/acs.orglett.0c04303] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
This first asymmetric total synthesis of (+)-srilankenyne (1), a halogenated C15 tetrahydropyran acetogenin isolated from Aplysia oculifera, features a sequence-sensitive process guided by conformational analysis to solve the challenging problem of introducing halogens. A competing semipinacol rearrangement during the installation of C(12)-bromide was suppressed by our A1,3 strain-controlled bromination protocol with support from X-ray crystallographic and computational studies. The C(10)-chloride was then placed by the Nakata chloromesylate-mediated chlorination.
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Affiliation(s)
- Hongjun Jang
- College of Pharmacy and Research Institute of Pharmaceutical Science and Technology (RIPST), Ajou University, Suwon 16499, Korea
| | - Soo Yeon Kwak
- College of Pharmacy and Research Institute of Pharmaceutical Science and Technology (RIPST), Ajou University, Suwon 16499, Korea
| | - Dongjoo Lee
- College of Pharmacy and Research Institute of Pharmaceutical Science and Technology (RIPST), Ajou University, Suwon 16499, Korea
| | - Juan V Alegre-Requena
- Department of Chemistry, Colorado State University, Fort Collins, Colorado 80523, United States
| | - Hyoungsu Kim
- College of Pharmacy and Research Institute of Pharmaceutical Science and Technology (RIPST), Ajou University, Suwon 16499, Korea
| | - Robert S Paton
- Department of Chemistry, Colorado State University, Fort Collins, Colorado 80523, United States
| | - Deukjoon Kim
- The Research Institute of Pharmaceutical Sciences, College of Pharmacy, Seoul National University, Seoul 08826, Korea
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5
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Chan HSS, Thompson AL, Christensen KE, Burton JW. Forwards and backwards - synthesis of Laurencia natural products using a biomimetic and retrobiomimetic strategy incorporating structural reassignment of laurefurenynes C-F. Chem Sci 2020; 11:11592-11600. [PMID: 34094406 PMCID: PMC8162873 DOI: 10.1039/d0sc04120c] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2020] [Accepted: 09/25/2020] [Indexed: 11/26/2022] Open
Abstract
Laurefurenynes C-F are four natural products isolated from Laurencia species whose structures were originally determined on the basis of extensive nuclear magnetic resonance experiments. On the basis of a proposed biogenesis, involving a tricyclic oxonium ion as a key intermediate, we have reassigned the structures of these four natural products and synthesized the four reassigned structures using a biomimetic approach demonstrating that they are the actual structures of the natural products. In addition, we have developed a synthesis of the enantiomers of the natural products laurencin and deacetyllaurencin from the enantiomer of (E)-laurefucin using an unusual retrobiomimetic strategy. All of these syntheses have been enabled by the use of tricyclic oxonium ions as pivotal synthetic intermediates.
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Affiliation(s)
- Hau Sun Sam Chan
- Department of Chemistry, Chemistry Research Laboratory, University of Oxford Mansfield Road Oxford OX1 3TA UK
| | - Amber L Thompson
- Department of Chemistry, Chemistry Research Laboratory, University of Oxford Mansfield Road Oxford OX1 3TA UK
| | - Kirsten E Christensen
- Department of Chemistry, Chemistry Research Laboratory, University of Oxford Mansfield Road Oxford OX1 3TA UK
| | - Jonathan W Burton
- Department of Chemistry, Chemistry Research Laboratory, University of Oxford Mansfield Road Oxford OX1 3TA UK
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6
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Shepherd ED, Dyson BS, Hak WE, Nguyen QNN, Lee M, Kim MJ, Sohn TI, Kim D, Burton JW, Paton RS. Structure Determination of a Chloroenyne from Laurencia majuscula Using Computational Methods and Total Synthesis. J Org Chem 2019; 84:4971-4991. [PMID: 30977652 PMCID: PMC6503471 DOI: 10.1021/acs.joc.8b02975] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
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Despite numerous
advances in spectroscopic methods through the
latter part of the 20th century, the unequivocal structure determination
of natural products can remain challenging, and inevitably, incorrect
structures appear in the literature. Computational methods that allow
the accurate prediction of NMR chemical shifts have emerged as a powerful
addition to the toolbox of methods available for the structure determination
of small organic molecules. Herein, we report the structure determination
of a small, stereochemically rich natural product from Laurencia majuscula using the powerful combination
of computational methods and total synthesis, along with the structure
confirmation of notoryne, using the same approach. Additionally, we
synthesized three further diastereomers of the L. majuscula enyne and have demonstrated that computations are able to distinguish
each of the four synthetic diastereomers from the 32 possible diastereomers
of the natural product. Key to the success of this work is to analyze
the computational data to provide the greatest distinction between
each diastereomer, by identifying chemical shifts that are most sensitive
to changes in relative stereochemistry. The success of the computational
methods in the structure determination of stereochemically rich, flexible
organic molecules will allow all involved in structure determination
to use these methods with confidence.
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Affiliation(s)
- Erin D Shepherd
- Chemistry Research Laboratory, Department of Chemistry , University of Oxford , Mansfield Road , Oxford OX1 3TA , United Kingdom
| | - Bryony S Dyson
- Chemistry Research Laboratory, Department of Chemistry , University of Oxford , Mansfield Road , Oxford OX1 3TA , United Kingdom
| | - William E Hak
- Chemistry Research Laboratory, Department of Chemistry , University of Oxford , Mansfield Road , Oxford OX1 3TA , United Kingdom
| | - Quynh Nhu N Nguyen
- Chemistry Research Laboratory, Department of Chemistry , University of Oxford , Mansfield Road , Oxford OX1 3TA , United Kingdom
| | - Miseon Lee
- The Research Institute of Pharmaceutical Sciences, College of Pharmacy , Seoul National University , Seoul 151-742 , Korea
| | - Mi Jung Kim
- The Research Institute of Pharmaceutical Sciences, College of Pharmacy , Seoul National University , Seoul 151-742 , Korea
| | - Te-Ik Sohn
- The Research Institute of Pharmaceutical Sciences, College of Pharmacy , Seoul National University , Seoul 151-742 , Korea
| | - Deukjoon Kim
- The Research Institute of Pharmaceutical Sciences, College of Pharmacy , Seoul National University , Seoul 151-742 , Korea
| | - Jonathan W Burton
- Chemistry Research Laboratory, Department of Chemistry , University of Oxford , Mansfield Road , Oxford OX1 3TA , United Kingdom
| | - Robert S Paton
- Chemistry Research Laboratory, Department of Chemistry , University of Oxford , Mansfield Road , Oxford OX1 3TA , United Kingdom.,Department of Chemistry , Colorado State University , Fort Collins , Colorado 80523 , United States
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Affiliation(s)
- Sibadatta Senapati
- Division of Organic Chemistry, CSIR-National Chemical Laboratory, Dr. Homi Bhabha Road, Pune 411 008, India
| | - Shyamsundar Das
- Division of Organic Chemistry, CSIR-National Chemical Laboratory, Dr. Homi Bhabha Road, Pune 411 008, India
| | - Chepuri V. Ramana
- Division of Organic Chemistry, CSIR-National Chemical Laboratory, Dr. Homi Bhabha Road, Pune 411 008, India
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8
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Wang Q, Yu X, Jin J, Wu Y, Liang Y. Difunctionalization of Alkynes: Synthesis of Novel Fluoropolymer Materials. CHINESE J CHEM 2018. [DOI: 10.1002/cjoc.201700630] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Affiliation(s)
- Qiang Wang
- State Key Laboratory of Applied Organic Chemistry; Lanzhou University; Lanzhou Gansu 730000 China
| | - Xiwen Yu
- State Key Laboratory of Applied Organic Chemistry; Lanzhou University; Lanzhou Gansu 730000 China
| | - Jiani Jin
- State Key Laboratory of Applied Organic Chemistry; Lanzhou University; Lanzhou Gansu 730000 China
| | - Yang Wu
- State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics; Chinese Academy of Science; Lanzhou Gansu 730000 China
| | - Yongmin Liang
- State Key Laboratory of Applied Organic Chemistry; Lanzhou University; Lanzhou Gansu 730000 China
- State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics; Chinese Academy of Science; Lanzhou Gansu 730000 China
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Saska J, Lewis W, Paton RS, Denton RM. Synthesis of malhamensilipin A exploiting iterative epoxidation/chlorination: experimental and computational analysis of epoxide-derived chloronium ions. Chem Sci 2016; 7:7040-7049. [PMID: 28337338 PMCID: PMC5282550 DOI: 10.1039/c6sc03012b] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2016] [Accepted: 08/02/2016] [Indexed: 11/21/2022] Open
Abstract
We report a 12-step catalytic enantioselective formal synthesis of malhamensilipin A (3) based upon an iterative epoxidation/chlorination strategy.
We report a 12-step catalytic enantioselective formal synthesis of malhamensilipin A (3) and diastereoisomeric analogues from (E)-2-undecenal. The convergent synthesis relied upon iterative epoxidation and phosphorus(v)-mediated deoxydichlorination reactions as well a titanium-mediated epoxide-opening to construct the C11–C16 stereohexad. The latter transformation occurred with very high levels of stereoretention regardless of the C13 configuration of the parent epoxide, implicating anchimeric assistance of either the γ- or δ-chlorine atoms, and the formation of chloretanium or chlorolanium ions, respectively. A computational analysis of the chloronium ion intermediates provided support for the involvement of chlorolanium ions, whereas the potential chloretanium ions were found to be less likely intermediates on the basis of their greater carbocationic character.
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Affiliation(s)
- J Saska
- School of Chemistry , University Park , Nottingham , NG7 2RD , UK .
| | - W Lewis
- School of Chemistry , University Park , Nottingham , NG7 2RD , UK .
| | - R S Paton
- Chemistry Research Laboratory , 12 Mansfield Road , Oxford OX1 3TA , UK .
| | - R M Denton
- School of Chemistry , University Park , Nottingham , NG7 2RD , UK .
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10
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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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11
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Jiao JY, Zhang XG, Zhang XH. Pd-catalyzed decarboxylative coupling of arylalkynyl carboxylic acids with allyl ethers: regioselective synthesis of branched 1,3-enynes. Tetrahedron 2015. [DOI: 10.1016/j.tet.2015.10.036] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
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12
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Finkbeiner P, Kloeckner U, Nachtsheim BJ. OH-Directed Alkynylation of 2-Vinylphenols with Ethynyl Benziodoxolones: A Fast Access to Terminal 1,3-Enynes. Angew Chem Int Ed Engl 2015; 54:4949-52. [DOI: 10.1002/anie.201412148] [Citation(s) in RCA: 67] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2014] [Revised: 01/14/2014] [Indexed: 01/14/2023]
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13
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Finkbeiner P, Kloeckner U, Nachtsheim BJ. OH-dirigierte Alkinylierung von 2-Vinylphenolen mit Ethinylbenziodoxolonen: ein schneller Zugang zu terminalen 1,3-Eninen. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201412148] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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14
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Ikeda A, Omote M, Kusumoto K, Tarui A, Sato K, Ando A. One-pot synthesis of 1,3-enynes with a CF3 group on the terminal sp2 carbon by an oxidative Sonogashira cross-coupling reaction. Org Biomol Chem 2015. [DOI: 10.1039/c5ob01290b] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
One-pot synthesis of 1,3-enynes with a CF3 group on the terminal sp2 carbon was achieved by an oxidative Sonogashira cross-coupling reaction with (E)-trimethyl(3,3,3-trifluoroprop-1-enyl)silane.
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Affiliation(s)
- Akari Ikeda
- Faculty of Pharmaceutical Sciences
- Setsunan University
- Hirakata
- Japan
| | - Masaaki Omote
- Faculty of Pharmaceutical Sciences
- Setsunan University
- Hirakata
- Japan
| | - Kana Kusumoto
- Faculty of Pharmaceutical Sciences
- Setsunan University
- Hirakata
- Japan
| | - Atsushi Tarui
- Faculty of Pharmaceutical Sciences
- Setsunan University
- Hirakata
- Japan
| | - Kazuyuki Sato
- Faculty of Pharmaceutical Sciences
- Setsunan University
- Hirakata
- Japan
| | - Akira Ando
- Faculty of Pharmaceutical Sciences
- Setsunan University
- Hirakata
- Japan
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Abstract
The first total synthesis of pandamarilactone-1, an alkaloid of Pandanus amaryllifolius, is reported. The nine-step synthesis features furan oxidation with singlet oxygen and then spiro-N,O-acetalization and elimination to generate the natural product and further Pandanus alkaloids, pandamarilactonines A-D.
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Affiliation(s)
- Kang Yee Seah
- Department of Chemistry, Chemistry Research Laboratory, University of Oxford , Mansfield Road, Oxford OX1 3TA, U.K
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Khodabakhshi S, Jafari F, Marahel F, Baghernejad M. One-pot, three-component synthesis of pyranocoumarins containing an aroyl group. HETEROCYCL COMMUN 2014. [DOI: 10.1515/hc-2014-0099] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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Shepherd DJ, Broadwith PA, Dyson BS, Paton RS, Burton JW. Structure reassignment of laurefurenynes A and B by computation and total synthesis. Chemistry 2013; 19:12644-8. [PMID: 23963665 PMCID: PMC4280896 DOI: 10.1002/chem.201302349] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2013] [Indexed: 12/02/2022]
Abstract
The originally assigned stereostructures of laurefurenynes A and B have been reassigned on the basis of DFT calculations of NMR chemical shifts, synthesis of model compounds and total synthesis of laurefurenyne B, demonstrating the power of this combined approach for stereostructure elucidation/confirmation.
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Affiliation(s)
- David J Shepherd
- Department of Chemistry, University of Oxford, Chemistry Research Laboratory, Mansfield RoadOxford, OX1 3TA (UK)
| | - Phillip A Broadwith
- Department of Chemistry, University of Oxford, Chemistry Research Laboratory, Mansfield RoadOxford, OX1 3TA (UK)
| | - Bryony S Dyson
- Department of Chemistry, University of Oxford, Chemistry Research Laboratory, Mansfield RoadOxford, OX1 3TA (UK)
| | - Robert S Paton
- Department of Chemistry, University of Oxford, Chemistry Research Laboratory, Mansfield RoadOxford, OX1 3TA (UK)
| | - Jonathan W Burton
- Department of Chemistry, University of Oxford, Chemistry Research Laboratory, Mansfield RoadOxford, OX1 3TA (UK)
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Tantillo DJ. Walking in the woods with quantum chemistry--applications of quantum chemical calculations in natural products research. Nat Prod Rep 2013; 30:1079-86. [PMID: 23793561 DOI: 10.1039/c3np70028c] [Citation(s) in RCA: 102] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
This Highlight describes applications of quantum chemical calculations to problems in natural products chemistry, including the elucidation of natural product structures (distinguishing between constitutional isomers, distinguishing between diastereomers, and assigning absolute configuration) and determination of reasonable mechanisms for their formation.
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Affiliation(s)
- Dean J Tantillo
- Department of Chemistry, University of California-Davis, 1 Shields Avenue, Davis, CA, USA.
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20
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Brkljača R, Urban S. Relative Configuration of the Marine Natural Product Elatenyne using NMR Spectroscopic and Chemical Derivatization Methodologies. Nat Prod Commun 2013. [DOI: 10.1177/1934578x1300800612] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
NMR spectroscopic methodologies used to characterize and elucidate the structure of the marine natural product elatenyne were also applied to the characterization of a new triazole structural derivative of elatenyne, obtained by “Click” chemistry. The two most probable relative configurations assigned to naturally occurring elatenyne were concluded on the basis of key single irradiation nOe NMR enhancements, in combination with the use of a variant of the HSQC NMR experiment that permitted NMR coupling constants to be measured for the overlapped ring junction protons. This study represents the first application of “Click” chemistry to chemically derivatize an unmodified natural product.
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Affiliation(s)
- Robert Brkljača
- School of Applied Sciences, Health Innovations Research Institute (HIRi) RMIT University, GPO Box 2476V Melbourne, Victoria 3001, Australia
| | - Sylvia Urban
- School of Applied Sciences, Health Innovations Research Institute (HIRi) RMIT University, GPO Box 2476V Melbourne, Victoria 3001, Australia
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Chen T, Guo C, Goto M, Han LB. A Brønsted acid-catalyzed generation of palladium complexes: efficient head-to-tail dimerization of alkynes. Chem Commun (Camb) 2013; 49:7498-500. [DOI: 10.1039/c3cc43131b] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Shao YL, Zhang XH, Han JS, Zhong P. Pd(II)-Catalyzed Dehydrogenative Olefination of Terminal Arylalkynes with Allylic Ethers: General and Selective Access to Linear (Z)-1,3-Enynes. Org Lett 2012; 14:5242-5. [DOI: 10.1021/ol302400p] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Affiliation(s)
- Yin-Lin Shao
- College of Chemistry and Materials Engineering and Oujiang College, Wenzhou University, Wenzhou 325035, China
| | - Xiao-Hong Zhang
- College of Chemistry and Materials Engineering and Oujiang College, Wenzhou University, Wenzhou 325035, China
| | - Jiang-Sheng Han
- College of Chemistry and Materials Engineering and Oujiang College, Wenzhou University, Wenzhou 325035, China
| | - Ping Zhong
- College of Chemistry and Materials Engineering and Oujiang College, Wenzhou University, Wenzhou 325035, China
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Dyson BS, Burton JW, Sohn TI, Kim B, Bae H, Kim D. Total Synthesis and Structure Confirmation of Elatenyne: Success of Computational Methods for NMR Prediction with Highly Flexible Diastereomers. J Am Chem Soc 2012; 134:11781-90. [DOI: 10.1021/ja304554e] [Citation(s) in RCA: 78] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Affiliation(s)
- Bryony S. Dyson
- Chemistry Research Laboratory,
Department of Chemistry, University of Oxford, Mansfield Road, Oxford OX1 3TA, U.K
| | - Jonathan W. Burton
- Chemistry Research Laboratory,
Department of Chemistry, University of Oxford, Mansfield Road, Oxford OX1 3TA, U.K
| | - Te-ik Sohn
- The Research Institute of Pharmaceutical
Sciences, College of Pharmacy, Seoul National University, Seoul 151-742, Korea
| | - Byungsook Kim
- The Research Institute of Pharmaceutical
Sciences, College of Pharmacy, Seoul National University, Seoul 151-742, Korea
| | - Hoon Bae
- The Research Institute of Pharmaceutical
Sciences, College of Pharmacy, Seoul National University, Seoul 151-742, Korea
| | - Deukjoon Kim
- The Research Institute of Pharmaceutical
Sciences, College of Pharmacy, Seoul National University, Seoul 151-742, Korea
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24
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Dias DA, Urban S. Phytochemical studies of the southern Australian marine alga, Laurencia elata. PHYTOCHEMISTRY 2011; 72:2081-2089. [PMID: 21802699 DOI: 10.1016/j.phytochem.2011.06.012] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/03/2011] [Revised: 06/24/2011] [Accepted: 06/28/2011] [Indexed: 05/31/2023]
Abstract
Chemical profiling of the southern Australian marine alga Laurencia elata (Rhodomelaceae) employing on-flow and stop-flow HPLC-NMR methodology followed by off-line chemical investigations resulted in the isolation of two C16 chamigrenes, cycloelatanene A and B together with three previously reported sesquiterpenes, (3Z)-chlorofucin, pacifenol and elatenyne. The chemical structures were elucidated via detailed spectroscopic analyses.
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Affiliation(s)
- Daniel Anthony Dias
- School of Applied Sciences, Health Innovations Research Institute (HIRi) RMIT University, G.P.O. Box 2476V, Melbourne, Victoria 3001, Australia
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Daniels DSB, Thompson AL, Anderson EA. Palladium-katalysierte asymmetrische Synthese von 2-Alkinyl-substituierten Sauerstoffheterocyclen. Angew Chem Int Ed Engl 2011. [DOI: 10.1002/ange.201105720] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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Daniels DSB, Thompson AL, Anderson EA. Palladium-Catalyzed Asymmetric Synthesis of 2-Alkynyl Oxacycles. Angew Chem Int Ed Engl 2011; 50:11506-10. [DOI: 10.1002/anie.201105720] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2011] [Indexed: 12/24/2022]
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Lin DW, Masuda T, Biskup MB, Nelson JD, Baran PS. Synthesis-guided structure revision of the sarcodonin, sarcoviolin, and hydnellin natural product family. J Org Chem 2011; 76:1013-30. [PMID: 21250718 PMCID: PMC3089814 DOI: 10.1021/jo102228j] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A sweeping structural revision of the sarcodonin natural product family (published structures 1a-13a) is proposed after extensive studies aimed at their chemical synthesis. Key features of revised structure 1b include replacement of the N,N-dioxide moiety with an oxime, ring-opening of the central diketopiperazine, and transposition of the terphenyl wing from the 1β-2β position of 1a to the 2β-3β position of 1b. This structure revision arose from the serendipitous synthesis of a benzodioxane aminal (44) whose structure was unambiguously determined by X-ray crystallography and whose spectral properties bore considerable resemblance to the published data for the sarcodonins. A versatile new method for O-arylation of hydroxamic acids is also reported herein, as well as a manganese(III)-mediated α-oxidation of hydroxamic acids to aminals.
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Affiliation(s)
- David W. Lin
- Department of Chemistry, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, California 92037
| | - Takeshi Masuda
- Department of Chemistry, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, California 92037
| | - Moritz B. Biskup
- Department of Chemistry, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, California 92037
| | - Jonathan D. Nelson
- Department of Chemistry, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, California 92037
| | - Phil S. Baran
- Department of Chemistry, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, California 92037
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28
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Schmidt B, Staude L, Kelling A, Schilde U. A Cross-Metathesis-Conjugate Addition Route to Enantiopure γ-Butyrolactams and γ-Lactones from a C2-Symmetric Precursor. European J Org Chem 2011. [DOI: 10.1002/ejoc.201001528] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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29
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Blair M, Forsyth CM, Tuck KL. Towards the synthesis of prevezol C: total enantioselective synthesis of (−)-2-epi-prevezol C. Tetrahedron Lett 2010. [DOI: 10.1016/j.tetlet.2010.07.019] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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30
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Abdel-Mageed WM, Ebel R, Valeriote FA, Jaspars M. Laurefurenynes A–F, new Cyclic Ether Acetogenins from a Marine Red Alga, Laurencia sp. Tetrahedron 2010. [DOI: 10.1016/j.tet.2010.02.041] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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31
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Clavier H, Correa A, Escudero-Adán E, Benet-Buchholz J, Cavallo L, Nolan S. Chemodivergent Metathesis of Dienynes Catalyzed by Ruthenium-Indenylidene Complexes: An Experimental and Computational Study. Chemistry 2009; 15:10244-54. [DOI: 10.1002/chem.200900976] [Citation(s) in RCA: 56] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Usami Y. Recent synthetic studies leading to structural revisions of marine natural products. Mar Drugs 2009; 7:314-30. [PMID: 19841716 PMCID: PMC2763102 DOI: 10.3390/md7030314] [Citation(s) in RCA: 56] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2009] [Revised: 07/07/2009] [Accepted: 07/13/2009] [Indexed: 11/16/2022] Open
Abstract
Because of the highly unique structures of marine natural products, there are many examples of structures that were originally proposed based on spectral analyses but later proven incorrect. In many cases, the total syntheses of the originally proposed structures of marine natural products has confirmed their incorrectness and the subsequent total syntheses of the newly proposed structures proved the revised structures. This review will show such cases appearing after 2005 and demonstrate how the true structures were elucidated.
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Affiliation(s)
- Yoshihide Usami
- Osaka University of Pharmaceutical Sciences, 4-20-1 Nasahara, Takatsuki, Osaka 569-1094, Japan.
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