1
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Li XR, Yan BC, Hu K, He S, Sun HD, Zuo J, Puno PT. Spiro ent-Clerodane Dimers: Discovery and Green Approaches for a Scalable Biomimetic Synthesis. Org Lett 2021; 23:5647-5651. [PMID: 34170713 DOI: 10.1021/acs.orglett.1c01724] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Scospirosins A (1) and B (2), two unprecedented spiro ent-clerodane dimers with 6/6/10/6 and 6/6/6/6/6 ring systems, respectively, were isolated from Isodon scoparius. Their structures were unambiguously established by spectroscopic, X-ray crystallographic, and chemical approaches. A bioinspired protecting-group-free strategy for their synthesis was achieved on a gram scale and featured the application of green methods, including neat reaction, sensitized photooxygenation, and electrochemical oxidation. 2 exhibited selective immunosuppressive activity against the proliferation of T lymphocytes (IC50 = 1.42 μM).
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Affiliation(s)
- Xing-Ren Li
- State Key Laboratory of Phytochemistry and Plant Resources in West China and Yunnan Key Laboratory of Natural Medicinal Chemistry, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, China
| | - Bing-Chao Yan
- State Key Laboratory of Phytochemistry and Plant Resources in West China and Yunnan Key Laboratory of Natural Medicinal Chemistry, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, China
| | - Kun Hu
- State Key Laboratory of Phytochemistry and Plant Resources in West China and Yunnan Key Laboratory of Natural Medicinal Chemistry, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, China
| | - Shijun He
- Laboratory of Immunopharmacology, State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, China.,University of Chinese Academy of Sciences, Beijing 100049, China
| | - Han-Dong Sun
- State Key Laboratory of Phytochemistry and Plant Resources in West China and Yunnan Key Laboratory of Natural Medicinal Chemistry, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, China
| | - Jianping Zuo
- Laboratory of Immunopharmacology, State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, China.,University of Chinese Academy of Sciences, Beijing 100049, China
| | - Pema-Tenzin Puno
- State Key Laboratory of Phytochemistry and Plant Resources in West China and Yunnan Key Laboratory of Natural Medicinal Chemistry, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, China
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2
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Ning SS, Meng D, Zhang JY, Liu SL, Zhou NN, Jin X, Zhu HT. Metal-Free Intramolecular [3+2] Cycloaddition of γ-Hydroxy Acetylenic Ketones with Alkynes for the Synthesis of Naphtho[1,2- c]furan-5-ones and Its Derivatization via a Selective C(sp 2)-H Deuteration Reaction. J Org Chem 2021; 86:7347-7358. [PMID: 34032437 DOI: 10.1021/acs.joc.1c00224] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
A metal-free intramolecular [3+2] cycloaddtion has been achieved by treating benzene-linked propynol-ynes with AcOH/H2O in a one-pot manner. The reaction provides greener, 100% atom-economic, highly regioselective, and more practical access to functionalized naphtho[1,2-c]furan-5-ones with valuable and versatile applications. The regioselective α-deuteration of naphtho[1,2-c]furan-5-ones has been also presented with excellent deuterium incorporation and chemical yields. Moreover, the fluorescent properties of naphtho[1,2-c]furan-5-one products have been investigated in solution.
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Affiliation(s)
- Si-Si Ning
- Shannxi Key Laboratory of Phytochemistry, College of Chemistry and Chemical Engineering, Baoji University of Arts and Sciences, Baoji 721013, China
| | - Dan Meng
- Shannxi Key Laboratory of Phytochemistry, College of Chemistry and Chemical Engineering, Baoji University of Arts and Sciences, Baoji 721013, China
| | - Jie-Yun Zhang
- Shannxi Key Laboratory of Phytochemistry, College of Chemistry and Chemical Engineering, Baoji University of Arts and Sciences, Baoji 721013, China
| | - Shi-Lei Liu
- Shannxi Key Laboratory of Phytochemistry, College of Chemistry and Chemical Engineering, Baoji University of Arts and Sciences, Baoji 721013, China
| | - Ni-Ni Zhou
- Shannxi Key Laboratory of Phytochemistry, College of Chemistry and Chemical Engineering, Baoji University of Arts and Sciences, Baoji 721013, China
| | - Xiaojie Jin
- Gansu University Key Laboratory for Molecular Medicine & Chinese Medicine Prevention and Treatment of Major Diseases, Gansu University of Chinese Medicine, Lanzhou 730000, China
| | - Hai-Tao Zhu
- Shannxi Key Laboratory of Phytochemistry, College of Chemistry and Chemical Engineering, Baoji University of Arts and Sciences, Baoji 721013, China
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3
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Lin S, Liu H, Svenningsen EB, Wollesen M, Jacobsen KM, Andersen FD, Moyano-Villameriel J, Pedersen CN, Nørby P, Tørring T, Poulsen TB. Expanding the antibacterial selectivity of polyether ionophore antibiotics through diversity-focused semisynthesis. Nat Chem 2020; 13:47-55. [PMID: 33353970 PMCID: PMC7610524 DOI: 10.1038/s41557-020-00601-1] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2019] [Accepted: 11/05/2020] [Indexed: 12/13/2022]
Abstract
Polyether ionophores are complex natural products capable of transporting cations across biological membranes. Many polyether ionophores possess potent antimicrobial activity and a few selected compounds have ability to target aggressive cancer cells. Nevertheless, ionophore function is believed to be associated with idiosyncratic cellu-lar toxicity and, consequently, human clinical development has not been pursued. Here, we demonstrate that structurally novel polyether ionophores can be efficiently constructed by recycling components of highly abundant polyethers to afford analogues with enhanced anti-bacterial selectivity compared to a panel of natural polyether ionophores. We used classic degradation reactions of the natural polyethers lasalocid and monensin and combined the resulting fragments with building blocks provided by total synthesis, including halogen-functionalized tetronic acids as cation-binding groups. Our results suggest that structural optimization of polyether ionophores is possible and that this area represents a potential opportunity for future methodological innovation.
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Affiliation(s)
- Shaoquan Lin
- Department of Chemistry, Aarhus University, Aarhus, Denmark
| | - Han Liu
- Department of Chemistry, Aarhus University, Aarhus, Denmark
| | | | | | | | - Frederikke D Andersen
- Department of Engineering-Microbial Biosynthesis, Aarhus University, Aarhus, Denmark
| | | | | | - Peter Nørby
- Department of Chemistry, Aarhus University, Aarhus, Denmark
| | - Thomas Tørring
- Department of Engineering-Microbial Biosynthesis, Aarhus University, Aarhus, Denmark
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4
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Ma B, Zhao Y, He C, Ding H. Total Synthesis of an Atropisomer of the
Schisandra
Triterpenoid Schiglautone A. Angew Chem Int Ed Engl 2018; 57:15567-15571. [DOI: 10.1002/anie.201809076] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2018] [Indexed: 12/14/2022]
Affiliation(s)
- Binjie Ma
- Department of ChemistryZhejiang University Hangzhou 310058 China
| | - Yifan Zhao
- Department of ChemistryZhejiang University Hangzhou 310058 China
| | - Chi He
- Department of ChemistryZhejiang University Hangzhou 310058 China
| | - Hanfeng Ding
- Department of ChemistryZhejiang University Hangzhou 310058 China
- State Key Laboratory of Elemento-Organic ChemistryNankai University Tianjin 300071 China
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5
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Ma B, Zhao Y, He C, Ding H. Total Synthesis of an Atropisomer of the
Schisandra
Triterpenoid Schiglautone A. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201809076] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Binjie Ma
- Department of ChemistryZhejiang University Hangzhou 310058 China
| | - Yifan Zhao
- Department of ChemistryZhejiang University Hangzhou 310058 China
| | - Chi He
- Department of ChemistryZhejiang University Hangzhou 310058 China
| | - Hanfeng Ding
- Department of ChemistryZhejiang University Hangzhou 310058 China
- State Key Laboratory of Elemento-Organic ChemistryNankai University Tianjin 300071 China
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6
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A protecting-group-free synthesis of arbusculone, andirolactone, pinnatolide, ipomolactone, cyclocapitelline and isocyclocapitelline. Tetrahedron Lett 2018. [DOI: 10.1016/j.tetlet.2018.10.024] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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7
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Lehnherr D, Ji Y, Neel AJ, Cohen RD, Brunskill APJ, Yang J, Reibarkh M. Discovery of a Photoinduced Dark Catalytic Cycle Using in Situ LED-NMR Spectroscopy. J Am Chem Soc 2018; 140:13843-13853. [DOI: 10.1021/jacs.8b08596] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Dan Lehnherr
- Process Research & Development, Merck & Co., Inc., Rahway, New Jersey 07065, United States
| | - Yining Ji
- Process Research & Development, Merck & Co., Inc., Rahway, New Jersey 07065, United States
| | - Andrew J. Neel
- Process Research & Development, Merck & Co., Inc., Rahway, New Jersey 07065, United States
| | - Ryan D. Cohen
- Process Research & Development, Merck & Co., Inc., Rahway, New Jersey 07065, United States
| | - Andrew P. J. Brunskill
- Process Research & Development, Merck & Co., Inc., Rahway, New Jersey 07065, United States
| | - Junyu Yang
- Process Research & Development, Merck & Co., Inc., Rahway, New Jersey 07065, United States
| | - Mikhail Reibarkh
- Process Research & Development, Merck & Co., Inc., Rahway, New Jersey 07065, United States
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8
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Chen X, Zhang HJ, Yang X, Lv H, Shao X, Tao C, Wang H, Cheng B, Li Y, Guo J, Zhang J, Zhai H. Divergent Total Syntheses of (−)-Daphnilongeranin B and (−)-Daphenylline. Angew Chem Int Ed Engl 2017; 57:947-951. [DOI: 10.1002/anie.201709762] [Citation(s) in RCA: 64] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2017] [Indexed: 01/04/2023]
Affiliation(s)
- Xiaoming Chen
- Shenzhen Engineering Laboratory of Nano Drug Slow Release; Key Laboratory of Chemical Genomics; Shenzhen Graduate School of Peking University; Shenzhen 518055 China
| | - Hai-Jun Zhang
- Shenzhen Engineering Laboratory of Nano Drug Slow Release; Key Laboratory of Chemical Genomics; Shenzhen Graduate School of Peking University; Shenzhen 518055 China
| | - Xinkan Yang
- The State Key Laboratory of Applied Organic Chemistry; College of Chemistry and Chemical Engineering; Lanzhou University; 222 Tianshui South Road Lanzhou 730000 China
| | - Houqiang Lv
- The State Key Laboratory of Applied Organic Chemistry; College of Chemistry and Chemical Engineering; Lanzhou University; 222 Tianshui South Road Lanzhou 730000 China
| | - Xiaoru Shao
- Shenzhen Engineering Laboratory of Nano Drug Slow Release; Key Laboratory of Chemical Genomics; Shenzhen Graduate School of Peking University; Shenzhen 518055 China
| | - Cheng Tao
- The State Key Laboratory of Applied Organic Chemistry; College of Chemistry and Chemical Engineering; Lanzhou University; 222 Tianshui South Road Lanzhou 730000 China
| | - Huifei Wang
- Shenzhen Engineering Laboratory of Nano Drug Slow Release; Key Laboratory of Chemical Genomics; Shenzhen Graduate School of Peking University; Shenzhen 518055 China
| | - Bin Cheng
- The State Key Laboratory of Applied Organic Chemistry; College of Chemistry and Chemical Engineering; Lanzhou University; 222 Tianshui South Road Lanzhou 730000 China
| | - Yun Li
- The State Key Laboratory of Applied Organic Chemistry; College of Chemistry and Chemical Engineering; Lanzhou University; 222 Tianshui South Road Lanzhou 730000 China
| | - Jingjing Guo
- The State Key Laboratory of Applied Organic Chemistry; College of Chemistry and Chemical Engineering; Lanzhou University; 222 Tianshui South Road Lanzhou 730000 China
| | - Jing Zhang
- Shenzhen Engineering Laboratory of Nano Drug Slow Release; Key Laboratory of Chemical Genomics; Shenzhen Graduate School of Peking University; Shenzhen 518055 China
| | - Hongbin Zhai
- Shenzhen Engineering Laboratory of Nano Drug Slow Release; Key Laboratory of Chemical Genomics; Shenzhen Graduate School of Peking University; Shenzhen 518055 China
- The State Key Laboratory of Applied Organic Chemistry; College of Chemistry and Chemical Engineering; Lanzhou University; 222 Tianshui South Road Lanzhou 730000 China
- Collaborative Innovation Center of Chemical Science and Engineering (Tianjin); Tianjin 300071 China
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9
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Chen X, Zhang HJ, Yang X, Lv H, Shao X, Tao C, Wang H, Cheng B, Li Y, Guo J, Zhang J, Zhai H. Divergent Total Syntheses of (−)-Daphnilongeranin B and (−)-Daphenylline. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201709762] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Affiliation(s)
- Xiaoming Chen
- Shenzhen Engineering Laboratory of Nano Drug Slow Release; Key Laboratory of Chemical Genomics; Shenzhen Graduate School of Peking University; Shenzhen 518055 China
| | - Hai-Jun Zhang
- Shenzhen Engineering Laboratory of Nano Drug Slow Release; Key Laboratory of Chemical Genomics; Shenzhen Graduate School of Peking University; Shenzhen 518055 China
| | - Xinkan Yang
- The State Key Laboratory of Applied Organic Chemistry; College of Chemistry and Chemical Engineering; Lanzhou University; 222 Tianshui South Road Lanzhou 730000 China
| | - Houqiang Lv
- The State Key Laboratory of Applied Organic Chemistry; College of Chemistry and Chemical Engineering; Lanzhou University; 222 Tianshui South Road Lanzhou 730000 China
| | - Xiaoru Shao
- Shenzhen Engineering Laboratory of Nano Drug Slow Release; Key Laboratory of Chemical Genomics; Shenzhen Graduate School of Peking University; Shenzhen 518055 China
| | - Cheng Tao
- The State Key Laboratory of Applied Organic Chemistry; College of Chemistry and Chemical Engineering; Lanzhou University; 222 Tianshui South Road Lanzhou 730000 China
| | - Huifei Wang
- Shenzhen Engineering Laboratory of Nano Drug Slow Release; Key Laboratory of Chemical Genomics; Shenzhen Graduate School of Peking University; Shenzhen 518055 China
| | - Bin Cheng
- The State Key Laboratory of Applied Organic Chemistry; College of Chemistry and Chemical Engineering; Lanzhou University; 222 Tianshui South Road Lanzhou 730000 China
| | - Yun Li
- The State Key Laboratory of Applied Organic Chemistry; College of Chemistry and Chemical Engineering; Lanzhou University; 222 Tianshui South Road Lanzhou 730000 China
| | - Jingjing Guo
- The State Key Laboratory of Applied Organic Chemistry; College of Chemistry and Chemical Engineering; Lanzhou University; 222 Tianshui South Road Lanzhou 730000 China
| | - Jing Zhang
- Shenzhen Engineering Laboratory of Nano Drug Slow Release; Key Laboratory of Chemical Genomics; Shenzhen Graduate School of Peking University; Shenzhen 518055 China
| | - Hongbin Zhai
- Shenzhen Engineering Laboratory of Nano Drug Slow Release; Key Laboratory of Chemical Genomics; Shenzhen Graduate School of Peking University; Shenzhen 518055 China
- The State Key Laboratory of Applied Organic Chemistry; College of Chemistry and Chemical Engineering; Lanzhou University; 222 Tianshui South Road Lanzhou 730000 China
- Collaborative Innovation Center of Chemical Science and Engineering (Tianjin); Tianjin 300071 China
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10
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Norris MD, Perkins MV. Total Synthesis of Plakilactones C, B and des-Hydroxyplakilactone B by the Oxidative Cleavage of Gracilioether Furanylidenes. J Org Chem 2016; 81:6848-54. [DOI: 10.1021/acs.joc.6b01196] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Affiliation(s)
- Matthew D. Norris
- School of Chemical and Physical
Sciences, Flinders University, GPO Box 2100, Adelaide, SA 5001, Australia
| | - Michael V. Perkins
- School of Chemical and Physical
Sciences, Flinders University, GPO Box 2100, Adelaide, SA 5001, Australia
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11
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12
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Piccialli V, Zaccaria S, Oliviero G, D'Errico S, D'Atri V, Borbone N. Insight into Pyridinium Chlorochromate Chemistry: Catalytic Oxidation of Tetrahydrofuran Compounds and Synthesis of Umbelactone. European J Org Chem 2012. [DOI: 10.1002/ejoc.201200069] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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13
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Davies SG, Roberts PM, Stephenson PT, Thomson JE. Syntheses of the racemic jaborandi alkaloids pilocarpine, isopilocarpine and pilosinine. Tetrahedron Lett 2009. [DOI: 10.1016/j.tetlet.2009.03.021] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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14
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Linker T, Schanzenbach D, Elamparuthi E, Sommermann T, Fudickar W, Gyóllai V, Somsák L, Demuth W, Schmittel M. Remarkable Oxidation Stability of Glycals: Excellent Substrates for Cerium(IV)-Mediated Radical Reactions. J Am Chem Soc 2008; 130:16003-10. [DOI: 10.1021/ja8052706] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Torsten Linker
- Department of Chemistry, University of Potsdam, Karl-Liebknecht-Strasse 24-25, D-14476 Potsdam, Germany, Department of Organic Chemistry, University of Debrecen, P.O. Box 20, H-4010 Debrecen, Hungary, and Department of Chemistry, University of Siegen, Adolf Reichwein Strasse 2, D-57068 Siegen, Germany
| | - Dirk Schanzenbach
- Department of Chemistry, University of Potsdam, Karl-Liebknecht-Strasse 24-25, D-14476 Potsdam, Germany, Department of Organic Chemistry, University of Debrecen, P.O. Box 20, H-4010 Debrecen, Hungary, and Department of Chemistry, University of Siegen, Adolf Reichwein Strasse 2, D-57068 Siegen, Germany
| | - Elangovan Elamparuthi
- Department of Chemistry, University of Potsdam, Karl-Liebknecht-Strasse 24-25, D-14476 Potsdam, Germany, Department of Organic Chemistry, University of Debrecen, P.O. Box 20, H-4010 Debrecen, Hungary, and Department of Chemistry, University of Siegen, Adolf Reichwein Strasse 2, D-57068 Siegen, Germany
| | - Thomas Sommermann
- Department of Chemistry, University of Potsdam, Karl-Liebknecht-Strasse 24-25, D-14476 Potsdam, Germany, Department of Organic Chemistry, University of Debrecen, P.O. Box 20, H-4010 Debrecen, Hungary, and Department of Chemistry, University of Siegen, Adolf Reichwein Strasse 2, D-57068 Siegen, Germany
| | - Werner Fudickar
- Department of Chemistry, University of Potsdam, Karl-Liebknecht-Strasse 24-25, D-14476 Potsdam, Germany, Department of Organic Chemistry, University of Debrecen, P.O. Box 20, H-4010 Debrecen, Hungary, and Department of Chemistry, University of Siegen, Adolf Reichwein Strasse 2, D-57068 Siegen, Germany
| | - Viktor Gyóllai
- Department of Chemistry, University of Potsdam, Karl-Liebknecht-Strasse 24-25, D-14476 Potsdam, Germany, Department of Organic Chemistry, University of Debrecen, P.O. Box 20, H-4010 Debrecen, Hungary, and Department of Chemistry, University of Siegen, Adolf Reichwein Strasse 2, D-57068 Siegen, Germany
| | - László Somsák
- Department of Chemistry, University of Potsdam, Karl-Liebknecht-Strasse 24-25, D-14476 Potsdam, Germany, Department of Organic Chemistry, University of Debrecen, P.O. Box 20, H-4010 Debrecen, Hungary, and Department of Chemistry, University of Siegen, Adolf Reichwein Strasse 2, D-57068 Siegen, Germany
| | - Wolfgang Demuth
- Department of Chemistry, University of Potsdam, Karl-Liebknecht-Strasse 24-25, D-14476 Potsdam, Germany, Department of Organic Chemistry, University of Debrecen, P.O. Box 20, H-4010 Debrecen, Hungary, and Department of Chemistry, University of Siegen, Adolf Reichwein Strasse 2, D-57068 Siegen, Germany
| | - Michael Schmittel
- Department of Chemistry, University of Potsdam, Karl-Liebknecht-Strasse 24-25, D-14476 Potsdam, Germany, Department of Organic Chemistry, University of Debrecen, P.O. Box 20, H-4010 Debrecen, Hungary, and Department of Chemistry, University of Siegen, Adolf Reichwein Strasse 2, D-57068 Siegen, Germany
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16
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Roth S, Stark CBW. A new catalytic oxidative cleavage reaction to furnish lactones. Chem Commun (Camb) 2008:6411-3. [DOI: 10.1039/b815135k] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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17
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Kraft P, Popaj K. Musk or violet? Design, synthesis and odor of seco-derivates of a musky carotol lead. Tetrahedron 2006. [DOI: 10.1016/j.tet.2006.10.020] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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18
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Pérez-Sacau E, Soto-Delgado J, Estévez-Braun A, Ravelo ÁG. Synthesis of 9- and 10-membered macrolactones by selective ozonolysis of 1,4-diazaphenanthrene derivatives. Tetrahedron 2005. [DOI: 10.1016/j.tet.2004.10.075] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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19
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Schomaker JM, Travis BR, Borhan B. Direct lactonization of alkenols via osmium tetroxide-mediated oxidative cleavage. Org Lett 2003; 5:3089-92. [PMID: 12916988 DOI: 10.1021/ol035057f] [Citation(s) in RCA: 37] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
[reaction: see text] A highly efficient, mild, and simple protocol is presented for the tandem OsO(4)-mediated oxidative cleavage/oxidative lactonization of alkenols to lactones. The protocol couples the OsO(4)-catalyzed oxidative cleavage of olefins with Oxone as the co-oxidant with the direct oxidation of aldehydes in alcoholic solvents to their corresponding esters.
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Affiliation(s)
- Jennifer M Schomaker
- Department of Chemistry, Michigan State University, East Lansing, Michigan 48824, USA
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20
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Ohara T, Kume M, Narukawa Y, Motokawa K, Uotani K, Nakai H. Novel antibacterial macrolides: synthesis of 15-membered diolides. J Org Chem 2002; 67:9146-52. [PMID: 12492314 DOI: 10.1021/jo020458e] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Novel 15-membered macrolides possessing the dilactone skeleton, diolides 13a and 13b, have been synthesized in our research program aimed at finding new antibacterial macrolides. Key strategic elements of the approach include the ring-expanding reaction of 13-membered dilactones, prepared from erythromycin A (Ery-A), to 15-membered dilactones via intramolecular translactonization. The absolute configuration at the regenerated C-8 position of the new diolides was determined by chemical transformation, leading to the corresponding lactam analogues, whose stereochemistry is known in the literature. For further confirmation, X-ray analysis was performed. The X-ray structure determination of 13a revealed a backbone conformation similar to that of Ery-A. Novel 15-membered diolide 13a and the 11,12-diol 18 exhibited antibacterial activities comparable to that of Ery-A.
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Affiliation(s)
- Takafumi Ohara
- Discovery Research Laboratories, Shionogi & Co., Ltd., Fukushima-ku, Osaka 553-0002, Japan
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21
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Kaiser HJ, Rowe BJ, Garin DL. Reduction of Xanteene and the Oxidative Rearrangement of 1,4,5,8-Tetraeydroxanteene to a Spirodiketolactone. SYNTHETIC COMMUN 1999. [DOI: 10.1080/00397919908086014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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22
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Hanaki N, Ishihara K, Kaino M, Naruse Y, Yamamoto H. Stereospecific annulation of hydroxy vinyl ethers. Synthetic application to polyfunctionalized cyclic compounds. Tetrahedron 1996. [DOI: 10.1016/0040-4020(96)00253-0] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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23
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24
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Dräger G, Kirschning A, Thiericke R, Zerlin M. Decanolides, 10-membered lactones of natural origin. Nat Prod Rep 1996. [DOI: 10.1039/np9961300365] [Citation(s) in RCA: 95] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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25
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Kraft P, Tochtermann W. Ring enlargement by alkylated 3-hydroxybutyrates: A synthesis of (12s, 13r)-(−)-12-methyl-13-tetradecanolide 1. Tetrahedron 1995. [DOI: 10.1016/0040-4020(95)00664-t] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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26
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27
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Ishihara K, Hanaki N, Yamamoto H. Highly regio- and stereo-selective annulation–elimination reactions of 1-cycloalkenyl 3-hydroxypropyl ethers. ACTA ACUST UNITED AC 1995. [DOI: 10.1039/c39950001117] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Das J, Chandrasekaran S. Heterogeneous permanganate oxidations: Synthesis of medium ring keto-lactones via substituent directed oxidative cyclisation. Tetrahedron 1994. [DOI: 10.1016/s0040-4020(01)85664-7] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
|
29
|
Cristóbal López J, Lameignère E, Burnouf C, de los Angeles Laborde M, Ghini AA, Olesker A, Lukacs G. Efficient routes to pyranosidic homologated conjugated enals and dienes from monosaccharides. Tetrahedron 1993. [DOI: 10.1016/s0040-4020(01)87245-8] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
|
30
|
|
31
|
Baskaran S, Chandrasekaran S. Oxidation of tetrahydrofuran methanol derivatives with pyridimium chlorochromate: A facile synthesis of γ-butyrolactones. Tetrahedron Lett 1990. [DOI: 10.1016/s0040-4039(00)94696-3] [Citation(s) in RCA: 26] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
|
32
|
A general approach to the synthesis of 5,6-dihydro-2(2H)pyranones; simple synthesis of α-pyrone, (±)-argentilactone and (±)-goniothalamin. Tetrahedron Lett 1989. [DOI: 10.1016/s0040-4039(01)80419-6] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
|
33
|
Markó L. Transition metals in organic synthesis: Hydroformylation, reduction and oxidation Annual survey covering the year 1987. J Organomet Chem 1988. [DOI: 10.1016/0022-328x(88)80470-4] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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34
|
1,4-dioxene in organic chemistry. Part VII regiospecific oxidative cleavage of 1,4-dioxenyl carbinols with pyridinium chlorochromate. A new method for the preparation of α-hydroxy acids and α-keto acids. Tetrahedron Lett 1988. [DOI: 10.1016/s0040-4039(00)82320-5] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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