1
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Zhang S, Zhao X, Qin G. Ru-Mg promoted reductive cross-coupling of allyl bromides and alkenes to synthesize 1,7-octadienes with an all-carbon quaternary center. Org Biomol Chem 2024; 22:3376-3380. [PMID: 38568099 DOI: 10.1039/d4ob00116h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/02/2024]
Abstract
A Ru-promoted reductive cross-coupling of allyl bromides and electron-deficient alkenes to provide terminal 1,7-octadienes with magnesium as a reductant is reported herein. This approach enables the facile construction of a series of complex terminal 1,7-octadienes with an all-carbon quaternary center under mild reaction conditions, and the synthetic utility of the current method has been demonstrated by a gram scale synthesis. Preliminary mechanism investigations suggested that a radical pathway might not be involved in this transformation.
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Affiliation(s)
- Shurong Zhang
- Faculty of Science, Kunming University of Science and Technology, Kunming 650500, P. R. China.
| | - Xinjie Zhao
- Faculty of Science, Kunming University of Science and Technology, Kunming 650500, P. R. China.
| | - Guiping Qin
- Faculty of Science, Kunming University of Science and Technology, Kunming 650500, P. R. China.
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2
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Fisher KJ, Shirtcliff L, Buchanan G, Thompson AW, Woolard FX, LaMunyon DH, Marshall JL, Baranouskas MB, Voelker RB, Lusk JS, Wells CE, Mohamath R, Kinsey R, Lykins WR, Ramer-Denisoff G, Fox CB, Paddon CJ, McPhee D. Kilo-Scale GMP Synthesis of Renewable Semisynthetic Vaccine-Grade Squalene. Org Process Res Dev 2023; 27:2317-2328. [PMID: 38524776 PMCID: PMC10956619 DOI: 10.1021/acs.oprd.3c00300] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/26/2024]
Abstract
Emulsions of the triterpene squalene ((6E,10E,14E,18E)-2,6,10,15,19,23-hexamethyltetracosa-2,6,10,14,18,22-hexaene, CAS 111-02-4) have been used as adjuvants in influenza vaccines since the 1990s. Traditionally sourced from shark liver oil, the overfishing of sharks and concomitant reduction in the oceanic shark population raises sustainability issues for vaccine adjuvant grade squalene. We report a semisynthetic route to squalene meeting current pharmacopeial specifications for use in vaccines that leverages the ready availability of trans-β-farnesene ((6E)-7,11-dimethyl-3-methylene-1,6,10-dodecatriene, CAS 18794-84-8), manufactured from sustainable sugarcane via a yeast fermentation process. The scalability of the proposed route was verified by a kilo-scale GMP synthesis. We also report data demonstrating the synthesized semi-synthetic squalene's physical stability and biological activity when used in a vaccine adjuvant formulation.
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Affiliation(s)
- Karl J. Fisher
- Amyris Inc, 5885 Hollis St, Suite 100, Emeryville, CA 94608, USA
| | - Laura Shirtcliff
- Actylis Eugene, 90 North Polk St., Suite 200, Eugene OR 97402, USA
| | - Greg Buchanan
- Amyris Inc, 5885 Hollis St, Suite 100, Emeryville, CA 94608, USA
| | | | - Frank X. Woolard
- Amyris Inc, 5885 Hollis St, Suite 100, Emeryville, CA 94608, USA
| | | | | | | | | | - Jason S. Lusk
- Actylis Eugene, 90 North Polk St., Suite 200, Eugene OR 97402, USA
| | - Charles E. Wells
- Actylis Eugene, 90 North Polk St., Suite 200, Eugene OR 97402, USA
| | - Raodoh Mohamath
- Access to Advanced Health Institute (AAHI), 1616 Eastlake Avenue East, Seattle, WA 98102, USA
| | - Robert Kinsey
- Access to Advanced Health Institute (AAHI), 1616 Eastlake Avenue East, Seattle, WA 98102, USA
| | - William R. Lykins
- Access to Advanced Health Institute (AAHI), 1616 Eastlake Avenue East, Seattle, WA 98102, USA
| | - Gabi Ramer-Denisoff
- Access to Advanced Health Institute (AAHI), 1616 Eastlake Avenue East, Seattle, WA 98102, USA
| | - Christopher B. Fox
- Access to Advanced Health Institute (AAHI), 1616 Eastlake Avenue East, Seattle, WA 98102, USA
| | | | - Derek McPhee
- Amyris Inc, 5885 Hollis St, Suite 100, Emeryville, CA 94608, USA
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3
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Liu L, Mendoza-Espinosa D, Quiroz-Guzmán M, Rheingold AL, Hanna TA, Saha G, Tang L, Chen Y, Gilbert M, Dutta A, Asandei AD. Radical and Ring-Opening Polymerizations with Aryl-Substituted Methylene-Bridged Titanium Bisphenolates. Organometallics 2023. [DOI: 10.1021/acs.organomet.3c00053] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/05/2023]
Affiliation(s)
- Lihua Liu
- Department of Chemistry, Texas Christian University, Box 298860, Fort Worth, Texas 76129, United States
| | - Daniel Mendoza-Espinosa
- Department of Chemistry, Texas Christian University, Box 298860, Fort Worth, Texas 76129, United States
| | - Mauricio Quiroz-Guzmán
- Department of Chemistry, Texas Christian University, Box 298860, Fort Worth, Texas 76129, United States
| | - Arnold L. Rheingold
- Department of Chemistry, UC San Diego, 9500 Gilman Drive, La Jolla, California 92093-0021, United States
| | - Tracy A. Hanna
- Department of Chemistry, Texas Christian University, Box 298860, Fort Worth, Texas 76129, United States
| | - Gobinda Saha
- Institute of Materials Science, Polymer Program and Department of Chemistry, University of Connecticut, Storrs, Connecticut 06062-3136, United States
| | - Liming Tang
- Institute of Materials Science, Polymer Program and Department of Chemistry, University of Connecticut, Storrs, Connecticut 06062-3136, United States
| | - Yanhui Chen
- Institute of Materials Science, Polymer Program and Department of Chemistry, University of Connecticut, Storrs, Connecticut 06062-3136, United States
| | - Megan Gilbert
- Institute of Materials Science, Polymer Program and Department of Chemistry, University of Connecticut, Storrs, Connecticut 06062-3136, United States
| | - Abhirup Dutta
- Institute of Materials Science, Polymer Program and Department of Chemistry, University of Connecticut, Storrs, Connecticut 06062-3136, United States
| | - Alexandru D. Asandei
- Institute of Materials Science, Polymer Program and Department of Chemistry, University of Connecticut, Storrs, Connecticut 06062-3136, United States
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4
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Zhang HH, Tang M, Zhao JJ, Song C, Yu S. Enantioselective Reductive Homocoupling of Allylic Acetates Enabled by Dual Photoredox/Palladium Catalysis: Access to C2-Symmetrical 1,5-Dienes. J Am Chem Soc 2021; 143:12836-12846. [PMID: 34351745 DOI: 10.1021/jacs.1c06271] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Transition-metal-catalyzed reductive coupling reactions have emerged as powerful protocols to construct C-C bonds. However, the development of enantioselective C(sp3)-C(sp3) reductive coupling remains challenging. Herein, we report a highly regio-, diastereo-, and enantioselective reductive homocoupling of allylic acetates through cooperative palladium and photoredox catalysis using diisopropylethylamine or Hantzsch ester as a homogeneous organic reductant. This straightforward protocol enables the stereoselective construction of C(sp3)-C(sp3) bonds under mild reaction conditions. A series of C2-symmetrical chiral 1,5-dienes were easily prepared with excellent enantioselectivities (up to >99% ee), diastereoselectivities (up to >95:5 dr), and regioselectivities (up to >95:5 rr). The resultant chiral 1,5-dienes can be directly used as chiral ligands in asymmetric synthesis, and they can be also transformed into other valuable chiral ligands.
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Affiliation(s)
- Hong-Hao Zhang
- State Key Laboratory of Analytical Chemistry for Life Science, Jiangsu Key Laboratory of Advanced Organic Materials, Chemistry and Biomedicine Innovation Center (ChemBIC), School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, People's Republic of China
| | - Menghan Tang
- State Key Laboratory of Analytical Chemistry for Life Science, Jiangsu Key Laboratory of Advanced Organic Materials, Chemistry and Biomedicine Innovation Center (ChemBIC), School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, People's Republic of China
| | - Jia-Jia Zhao
- State Key Laboratory of Analytical Chemistry for Life Science, Jiangsu Key Laboratory of Advanced Organic Materials, Chemistry and Biomedicine Innovation Center (ChemBIC), School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, People's Republic of China
| | - Changhua Song
- State Key Laboratory of Analytical Chemistry for Life Science, Jiangsu Key Laboratory of Advanced Organic Materials, Chemistry and Biomedicine Innovation Center (ChemBIC), School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, People's Republic of China
| | - Shouyun Yu
- State Key Laboratory of Analytical Chemistry for Life Science, Jiangsu Key Laboratory of Advanced Organic Materials, Chemistry and Biomedicine Innovation Center (ChemBIC), School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, People's Republic of China
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5
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Boyko YD, Huck CJ, Ning S, Shved AS, Yang C, Chu T, Tonogai EJ, Hergenrother PJ, Sarlah D. Synthetic Studies on Selective, Proapoptotic Isomalabaricane Triterpenoids Aided by Computational Techniques. J Am Chem Soc 2021; 143:2138-2155. [DOI: 10.1021/jacs.0c12569] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Yaroslav D. Boyko
- Roger Adams Laboratory, Department of Chemistry, University of Illinois, Urbana, Illinois 61801, United States
- Cancer Center at Illinois, University of Illinois, Urbana, Illinois 61801, United States
| | - Christopher J. Huck
- Roger Adams Laboratory, Department of Chemistry, University of Illinois, Urbana, Illinois 61801, United States
- Cancer Center at Illinois, University of Illinois, Urbana, Illinois 61801, United States
| | - Shang Ning
- Roger Adams Laboratory, Department of Chemistry, University of Illinois, Urbana, Illinois 61801, United States
| | - Alexander S. Shved
- Roger Adams Laboratory, Department of Chemistry, University of Illinois, Urbana, Illinois 61801, United States
- Cancer Center at Illinois, University of Illinois, Urbana, Illinois 61801, United States
| | - Cheng Yang
- Roger Adams Laboratory, Department of Chemistry, University of Illinois, Urbana, Illinois 61801, United States
| | - Tiffany Chu
- Roger Adams Laboratory, Department of Chemistry, University of Illinois, Urbana, Illinois 61801, United States
| | - Emily J. Tonogai
- Roger Adams Laboratory, Department of Chemistry, University of Illinois, Urbana, Illinois 61801, United States
- Cancer Center at Illinois, University of Illinois, Urbana, Illinois 61801, United States
- Carl R. Woese Institute for Genomic Biology, University of Illinois, Urbana, Illinois 61801, United States
| | - Paul J. Hergenrother
- Roger Adams Laboratory, Department of Chemistry, University of Illinois, Urbana, Illinois 61801, United States
- Cancer Center at Illinois, University of Illinois, Urbana, Illinois 61801, United States
- Carl R. Woese Institute for Genomic Biology, University of Illinois, Urbana, Illinois 61801, United States
| | - David Sarlah
- Roger Adams Laboratory, Department of Chemistry, University of Illinois, Urbana, Illinois 61801, United States
- Cancer Center at Illinois, University of Illinois, Urbana, Illinois 61801, United States
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6
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Zhou X, Zhang G, Huang R, Huang H. Palladium-Catalyzed Allyl-Allyl Reductive Coupling of Allylamines or Allylic Alcohols with H 2 as Sole Reductant. Org Lett 2021; 23:365-369. [PMID: 33400881 DOI: 10.1021/acs.orglett.0c03865] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Catalytic carbon-carbon bond formation building on reductive coupling is a powerful method for the preparation of organic compounds. The identification of environmentally benign reductants is key for establishing an efficient reductive coupling reaction. Herein an efficient strategy enabling H2 as the sole reductant for the palladium-catalyzed allyl-allyl reductive coupling reaction is described. A wide range of allylamines and allylic alcohols as well as allylic ethers proceed smoothly to deliver the C-C coupling products under 1 atm of H2. Kinetic studies suggested that the dinuclear palladium species was involved in the catalytic cycle.
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Affiliation(s)
- Xibing Zhou
- Hefei National Laboratory for Physical Sciences at the Microscale and Department of Chemistry, University of Science and Technology of China, Hefei 230026, P. R. China
| | - Guoying Zhang
- State Key Laboratory for Oxo Synthesis and Selective Oxidation, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, P. R. China
| | - Renbin Huang
- Hefei National Laboratory for Physical Sciences at the Microscale and Department of Chemistry, University of Science and Technology of China, Hefei 230026, P. R. China
| | - Hanmin Huang
- Hefei National Laboratory for Physical Sciences at the Microscale and Department of Chemistry, University of Science and Technology of China, Hefei 230026, P. R. China.,Center for Excellence in Molecular Synthesis of CAS, Hefei 230026, P. R. China.,State Key Laboratory for Oxo Synthesis and Selective Oxidation, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, P. R. China
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7
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Martínez AR, Morales LP, Ojeda ED, Rodríguez MC, Rodríguez-García I. The Proven Versatility of Cp 2TiCl. J Org Chem 2020; 86:1311-1329. [PMID: 33147037 DOI: 10.1021/acs.joc.0c01233] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
In the last two decades, titanocene monochloride has been postulated as a monoelectronic transfer reagent capable of catalyzing an important variety of chemical transformations. In this Perspective, our contributions to this growing field of research are summarized and analyzed. Especially known have been our contributions in C-C bond formation reactions, hydrogen-atom transfer from water to radicals, and isomerization reactions, as well as the development of a catalytic cycle that has subsequently allowed the preparation of a great variety of natural terpenes. It is also worth mentioning our contribution in the postulation of this single-electron transfer agent (SET) as a new green catalyst with a broad range of applications in organic and organometallic chemistry. The most significant catalytic processes developed by other research groups are also briefly described, with special emphasis on the reaction mechanisms involved. Finally, a reflection is made on the future trends in the research of this SET, aimed at consolidating this chemical as a new green reagent that will be widely used in fine chemistry, green chemistry, and industrial chemical processes.
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Affiliation(s)
- Antonio Rosales Martínez
- Department of Chemical Engineering, Escuela Politécnica Superior, University of Sevilla, 41011 Sevilla, Spain
| | - Laura Pozo Morales
- Department of Chemical Engineering, Escuela Politécnica Superior, University of Sevilla, 41011 Sevilla, Spain
| | - Emilio Díaz Ojeda
- Department of Chemical Engineering, Escuela Politécnica Superior, University of Sevilla, 41011 Sevilla, Spain
| | - María Castro Rodríguez
- Department of Chemical Engineering, Escuela Politécnica Superior, University of Sevilla, 41011 Sevilla, Spain
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8
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Alcaraz Janßen M, Thiele CM. Poly-γ-S-perillyl-l-glutamate and Poly-γ-S-perillyl-d-glutamate: Diastereomeric Alignment Media Used for the Investigation of the Alignment Process. Chemistry 2020; 26:7831-7839. [PMID: 32134524 PMCID: PMC7384199 DOI: 10.1002/chem.201905447] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2019] [Indexed: 11/09/2022]
Abstract
Residual dipolar couplings (RDCs) offer additional information for structure elucidation by NMR spectroscopy. They are measured in anisotropic media, such as lyotropic liquid crystalline phases of polypeptides. Today, some suitable polypeptides are known. Nevertheless, structural influences of these polypeptides on the alignment properties are not really understood. Thus, which influence a chiral side chain has on enantiodiscrimination and whether we can improve the enantiodifferentiation significantly by adding an additional chiral center in the side chain are questions of interest. Therefore, new diastereomeric polypeptide-based alignment media with an additional chiral center in the side chain derived from perillyl alcohol were synthesized and their properties were investigated (secondary structure, liquid crystallinity, etc.). The enantiomers of isopinocampheol and β-pinene were used as model analytes for the study of enantiodiscrimination. Additionally, the usage of 1 H-1 H-RDCs to improve the alignment tensor quality is demonstrated.
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Affiliation(s)
- Marcel Alcaraz Janßen
- Clemens-Schöpf-Institut für Organische Chemie und BiochemieTechnical University of DarmstadtAlarich-Weiss-Str. 1664287DarmstadtGermany
| | - Christina M. Thiele
- Clemens-Schöpf-Institut für Organische Chemie und BiochemieTechnical University of DarmstadtAlarich-Weiss-Str. 1664287DarmstadtGermany
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9
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Gan Y, Hu H, Liu Y. Nickel-Catalyzed Homo- and Cross-Coupling of Allyl Alcohols via Allyl Boronates. Org Lett 2020; 22:4418-4423. [PMID: 32427489 DOI: 10.1021/acs.orglett.0c01424] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
A nickel-catalyzed homo- and cross-coupling of allylic alcohols to 1,5-dienes in the presence of B2pin2 with excellent regioselectivity has been developed. Mechanistic studies indicate that the reaction proceeds via sequential nickel-catalyzed borylation of allyl alcohols followed by cross-coupling of the resulting allyl boronates with allyl alcohols. The method was effectively applied to nickel-catalyzed allylation of aldehydes using allylic alcohols directly.
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Affiliation(s)
- Yi Gan
- State Key Laboratory of Organometallic Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Lu, Shanghai 200032, People's Republic of China
| | - Hui Hu
- State Key Laboratory of Organometallic Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Lu, Shanghai 200032, People's Republic of China
| | - Yuanhong Liu
- State Key Laboratory of Organometallic Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Lu, Shanghai 200032, People's Republic of China
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10
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González-Delgado JA, Arteaga JF. Control of Homocoupling Versus Reduction in Titanium(III)-Mediated Radical Opening of Styrene Oxides. European J Org Chem 2019. [DOI: 10.1002/ejoc.201901625] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- José A. González-Delgado
- CIQSO-Center for Research in Sustainable Chemistry and Department of Chemistry; University of Huelva; Campus de El Carmen s/n E-21071 Huelva Spain
| | - Jesús F. Arteaga
- CIQSO-Center for Research in Sustainable Chemistry and Department of Chemistry; University of Huelva; Campus de El Carmen s/n E-21071 Huelva Spain
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11
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Mao C, Zhou S, Qian C, Ruan J, Chen X. Efficient Dehydration of C 6-10-α,ω-Alkanediols to Alkadienes as Catalyzed by Aliphatic Acids. ACS OMEGA 2019; 4:17588-17592. [PMID: 31656934 PMCID: PMC6812129 DOI: 10.1021/acsomega.9b02799] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/29/2019] [Accepted: 09/25/2019] [Indexed: 06/10/2023]
Abstract
The aliphatic-acid-mediated dehydration of C6-10-α,ω-alkanediols to alkadienes proceeds in a stepwise manner: C6-10-α,ω-alkanediols react with aliphatic acids first to generate diesters; subsequent pyrolysis of the latter produces alkadienes. The highest yields of 1,5-hexadiene, 1,7-octadiene, and 1,9-decadiene were up to 70.3, 74.8, and 90.3%, respectively. It turned out that pyrolysis favors the diester with a longer carbon chain more, while acetic acid outperformed the other aliphatic acids in the pyrolysis step that a relatively lower temperature was enough for a high yield of alkadienes.
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Affiliation(s)
- Chongzhi Mao
- Zhejiang
Provincial Key Laboratory of Advanced Chemical Engineering
Manufacture Technology, College of Chemical and Biological Engineering and Key Laboratory
of Biomass Chemical Engineering of Ministry of Education, College
of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310027, P. R. China
| | - Shaodong Zhou
- Zhejiang
Provincial Key Laboratory of Advanced Chemical Engineering
Manufacture Technology, College of Chemical and Biological Engineering and Key Laboratory
of Biomass Chemical Engineering of Ministry of Education, College
of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310027, P. R. China
| | - Chao Qian
- Zhejiang
Provincial Key Laboratory of Advanced Chemical Engineering
Manufacture Technology, College of Chemical and Biological Engineering and Key Laboratory
of Biomass Chemical Engineering of Ministry of Education, College
of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310027, P. R. China
| | - Jiancheng Ruan
- Zhejiang
Provincial Key Laboratory of Advanced Chemical Engineering
Manufacture Technology, College of Chemical and Biological Engineering and Key Laboratory
of Biomass Chemical Engineering of Ministry of Education, College
of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310027, P. R. China
| | - Xinzhi Chen
- Zhejiang
Provincial Key Laboratory of Advanced Chemical Engineering
Manufacture Technology, College of Chemical and Biological Engineering and Key Laboratory
of Biomass Chemical Engineering of Ministry of Education, College
of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310027, P. R. China
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12
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Hu X, Lim P, Fairhurst RM, Maimone TJ. Synthesis and Study of the Antimalarial Cardamom Peroxide. Tetrahedron 2018; 74:3358-3369. [PMID: 30319159 PMCID: PMC6181145 DOI: 10.1016/j.tet.2018.03.045] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
A full account of our previously disclosed synthesis of the monoterpene dimer cardamom peroxide is reported. Inspired by hypotheses regarding the potential biosynthetic origins of this natural product, several unproductive routes are also reported. The chemical reactivity of this structurally unique metabolite in the presence of iron(II) sources is also reported as is its antimalarial activity against Plasmodium falciparum clinical isolates from several Cambodian provinces.
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Affiliation(s)
- Xirui Hu
- Department of Chemistry, University of California-Berkeley, Berkeley, CA 94720 (USA)
| | - Pharath Lim
- Laboratory of Malaria and Vector Research, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Rockville, MD (USA)
- National Center for Parasitology, Entomology, and Malaria Control, Phnom Penh, Cambodia
| | - Rick M Fairhurst
- Laboratory of Malaria and Vector Research, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Rockville, MD (USA)
| | - Thomas J Maimone
- Department of Chemistry, University of California-Berkeley, Berkeley, CA 94720 (USA)
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13
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Wu X, Wang HJ, Huang YS, Li WDZ. Intramolecular [2 + 2] Cycloadditions of Alkyl(phenylthio)ketenes: Total Synthesis of (+)-Sphaerodiol. Org Lett 2018. [PMID: 29533070 DOI: 10.1021/acs.orglett.8b00407] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Asymmetric total synthesis of (+)-sphaerodiol (2) has been achieved. A key step is an intramolecular [2 + 2] cycloaddition of alkyl(phenylthio)ketene for rapid assembly of the decalin ring.
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Affiliation(s)
- Xiang Wu
- Anhui Province Key Laboratory of Advanced Catalytic Materials and Reaction Engineering, School of Chemistry and Chemical Engineering , Hefei University of Technology , Hefei 230009 , China
| | - Hai-Jun Wang
- Anhui Province Key Laboratory of Advanced Catalytic Materials and Reaction Engineering, School of Chemistry and Chemical Engineering , Hefei University of Technology , Hefei 230009 , China
| | - Yong-Shuang Huang
- Anhui Province Key Laboratory of Advanced Catalytic Materials and Reaction Engineering, School of Chemistry and Chemical Engineering , Hefei University of Technology , Hefei 230009 , China
| | - Wei-Dong Z Li
- School of Life Science and Engineering , Southwest Jiaotong University , Chengdu 610031 , China
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14
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Feusso HMF, Mvot Akak C, Feussi Tala M, Azebaze AGB, Vardamides JC, Laatsch H. Mannic acid, a new ent -kaurane dimer diterpenoid and other chemical constituents from different parts of Diospyros mannii. BIOCHEM SYST ECOL 2017. [DOI: 10.1016/j.bse.2017.09.001] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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15
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Castro Rodríguez M, Rodríguez García I, Rodríguez Maecker RN, Pozo Morales L, Oltra JE, Rosales Martínez A. Cp2TiCl: An Ideal Reagent for Green Chemistry? Org Process Res Dev 2017. [DOI: 10.1021/acs.oprd.7b00098] [Citation(s) in RCA: 46] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- María Castro Rodríguez
- Department
of Chemical Engineering, Escuela Politécnica Superior, University of Sevilla, 41011 Sevilla, Spain
| | | | | | - Laura Pozo Morales
- Department
of Chemical Engineering, Escuela Politécnica Superior, University of Sevilla, 41011 Sevilla, Spain
| | - J. Enrique Oltra
- Department
of Organic Chemistry, Faculty of Science, University of Granada, 18071 Granada, Spain
| | - Antonio Rosales Martínez
- Department
of Chemical Engineering, Escuela Politécnica Superior, University of Sevilla, 41011 Sevilla, Spain
- Petrochemical
Engineering, Universidad de las Fuerzas Armadas-ESPE, 050150 Latacunga, Ecuador
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16
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Zweig JE, Kim DE, Newhouse TR. Methods Utilizing First-Row Transition Metals in Natural Product Total Synthesis. Chem Rev 2017; 117:11680-11752. [PMID: 28525261 DOI: 10.1021/acs.chemrev.6b00833] [Citation(s) in RCA: 130] [Impact Index Per Article: 18.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
First-row transition-metal-mediated reactions constitute an important and growing area of research due to the low cost, low toxicity, and exceptional synthetic versatility of these metals. Currently, there is considerable effort to replace existing precious-metal-catalyzed reactions with first-row analogs. More importantly, there are a plethora of unique transformations mediated by first-row metals, which have no classical second- or third-row counterpart. Herein, the application of first-row metal-mediated methods to the total synthesis of natural products is discussed. This Review is intended to highlight strategic uses of these metals to realize efficient syntheses and highlight the future potential of these reagents and catalysts in organic synthesis.
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Affiliation(s)
- Joshua E Zweig
- Department of Chemistry, Yale University , 275 Prospect Street, New Haven, Connecticut 06520-8107, United States
| | - Daria E Kim
- Department of Chemistry, Yale University , 275 Prospect Street, New Haven, Connecticut 06520-8107, United States
| | - Timothy R Newhouse
- Department of Chemistry, Yale University , 275 Prospect Street, New Haven, Connecticut 06520-8107, United States
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17
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Jia WL, He J, Yang JJ, Gao XW, Liu Q, Wu LZ. Homocoupling of 3-Halooxindole via Visible-Light Photocatalysis: A Mild Access to 3,3′-Bioxindoles. J Org Chem 2016; 81:7172-81. [DOI: 10.1021/acs.joc.6b01045] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Wen-Liang Jia
- State
Key Laboratory of Applied Organic Chemistry, College of Chemistry
and Chemical Engineering, Lanzhou University, Lanzhou, Gansu 730000, PR China
| | - Jian He
- State
Key Laboratory of Applied Organic Chemistry, College of Chemistry
and Chemical Engineering, Lanzhou University, Lanzhou, Gansu 730000, PR China
| | - Jia-Jing Yang
- State
Key Laboratory of Applied Organic Chemistry, College of Chemistry
and Chemical Engineering, Lanzhou University, Lanzhou, Gansu 730000, PR China
| | - Xue-Wang Gao
- Key
Laboratory of Photochemical Conversion and Optoelectronic Materials,
Technical Institute of Physics and Chemistry, The Chinese Academy of Sciences, Beijing 100190, PR China
| | - Qiang Liu
- State
Key Laboratory of Applied Organic Chemistry, College of Chemistry
and Chemical Engineering, Lanzhou University, Lanzhou, Gansu 730000, PR China
| | - Li-Zhu Wu
- Key
Laboratory of Photochemical Conversion and Optoelectronic Materials,
Technical Institute of Physics and Chemistry, The Chinese Academy of Sciences, Beijing 100190, PR China
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18
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González-Delgado JA, Prieto C, Enríquez L, Jaraíz M, López-Pérez JL, Barrero AF, Arteaga JF. Ti-Mediated Efficient Reductive Dehalogenation of Carbon-Halogen Bonds. ASIAN J ORG CHEM 2016. [DOI: 10.1002/ajoc.201600169] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- José A. González-Delgado
- CIQSO-Center for Research in Sustainable Chemistry, and Department of Chemistry; University of Huelva; Campus el Carmen 21071 Huelva Spain
| | - Consuelo Prieto
- Department of Organic Chemistry and Institute of Biotechnology; University of Granada; Avda. Fuentenueva s/n 18071 Granada Spain
| | - Lourdes Enríquez
- Department of Electrical and Electronics; University of Valladolid; Paseo Belen 15 47011 Valladolid Spain
| | - Martín Jaraíz
- Department of Electrical and Electronics; University of Valladolid; Paseo Belen 15 47011 Valladolid Spain
| | - José L. López-Pérez
- Department of Pharmaceutical Chemistry-IBSAL-CIETUS; University of Salamanca; Avda. Campo Charro s/n 37071 Salamanca Spain
| | - Alejandro F. Barrero
- Department of Organic Chemistry and Institute of Biotechnology; University of Granada; Avda. Fuentenueva s/n 18071 Granada Spain
| | - Jesús F. Arteaga
- CIQSO-Center for Research in Sustainable Chemistry, and Department of Chemistry; University of Huelva; Campus el Carmen 21071 Huelva Spain
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19
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Wu X, Lei C, Yue G, Zhou JS. Palladium-Catalyzed Direct Cyclopropylation of Heterocycles. Angew Chem Int Ed Engl 2015; 54:9601-5. [DOI: 10.1002/anie.201504735] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2015] [Indexed: 12/19/2022]
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20
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Wu X, Lei C, Yue G, Zhou JS. Palladium-Catalyzed Direct Cyclopropylation of Heterocycles. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201504735] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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21
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Rosales A, Rodríguez-García I, Muñoz-Bascón J, Roldan-Molina E, Padial NM, Morales LP, García-Ocaña M, Oltra JE. The Nugent Reagent: A Formidable Tool in Contemporary Radical and Organometallic Chemistry. European J Org Chem 2015. [DOI: 10.1002/ejoc.201500292] [Citation(s) in RCA: 63] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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22
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Liu HX, Tan HB, He MT, Li L, Wang YH, Long CL. Isolation and synthesis of two hydroxychavicol heterodimers from Piper nudibaccatum. Tetrahedron 2015. [DOI: 10.1016/j.tet.2015.03.005] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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23
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Prieto C, González Delgado JA, Arteaga JF, Jaraíz M, López-Pérez JL, Barrero AF. Homocoupling versus reduction of radicals: an experimental and theoretical study of Ti(iii)-mediated deoxygenation of activated alcohols. Org Biomol Chem 2015; 13:3462-9. [PMID: 25665946 DOI: 10.1039/c4ob02290d] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A detailed study corroborates that the Ti(iii)-mediated reductive deoxygenation of activated -OH proceeds via an allyl(benzyl)-radical and allyl(benzyl)-Ti, which is protonated, regioselectively in the case of allylic derivatives.
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Affiliation(s)
- Consuelo Prieto
- Department of Organic Chemistry and Institute of Biotechnology
- University of Granada
- 18071 Granada
- Spain
| | - José A. González Delgado
- Department of Organic Chemistry and Institute of Biotechnology
- University of Granada
- 18071 Granada
- Spain
| | - Jesús F. Arteaga
- CIQSO – Center for Research in Sustainable Chemistry
- and Department of Chemical Engineering
- Physical Chemistry and Organic Chemistry
- University of Huelva
- 21071 Huelva
| | - Martín Jaraíz
- Department of Electronics
- ETSIT
- University of Valladolid
- Valladolid
- Spain
| | - José L. López-Pérez
- Department of Pharmaceutical Chemistry-IBSAL-CIETUS
- University of Salamanca
- 37071 Salamanca
- Spain
| | - Alejandro F. Barrero
- Department of Organic Chemistry and Institute of Biotechnology
- University of Granada
- 18071 Granada
- Spain
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24
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Tang Y, Liu JT, Chen P, Lv MC, Wang ZZ, Huang YK. Protecting-Group-Free Total Synthesis of Aplykurodinone-1. J Org Chem 2014; 79:11729-34. [DOI: 10.1021/jo501684k] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
- Yu Tang
- School of Pharmaceutical Science and Technology, Key Laboratory for Modern Drug Delivery & High-Efficiency, Collaborative Innovation Center of Chemical Science and Engineering, Tianjin University, Tianjin, 300072 P. R. China
| | - Ji-tian Liu
- School of Pharmaceutical Science and Technology, Key Laboratory for Modern Drug Delivery & High-Efficiency, Collaborative Innovation Center of Chemical Science and Engineering, Tianjin University, Tianjin, 300072 P. R. China
| | - Ping Chen
- School of Pharmaceutical Science and Technology, Key Laboratory for Modern Drug Delivery & High-Efficiency, Collaborative Innovation Center of Chemical Science and Engineering, Tianjin University, Tianjin, 300072 P. R. China
| | - Ming-can Lv
- School of Pharmaceutical Science and Technology, Key Laboratory for Modern Drug Delivery & High-Efficiency, Collaborative Innovation Center of Chemical Science and Engineering, Tianjin University, Tianjin, 300072 P. R. China
| | - Zhen-zhen Wang
- School of Pharmaceutical Science and Technology, Key Laboratory for Modern Drug Delivery & High-Efficiency, Collaborative Innovation Center of Chemical Science and Engineering, Tianjin University, Tianjin, 300072 P. R. China
| | - Yi-kun Huang
- School of Pharmaceutical Science and Technology, Key Laboratory for Modern Drug Delivery & High-Efficiency, Collaborative Innovation Center of Chemical Science and Engineering, Tianjin University, Tianjin, 300072 P. R. China
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25
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Ardashov OV, Volcho KP, Salakhutdinov NF. Synthesis of hydroxy derivatives of limonene. RUSSIAN CHEMICAL REVIEWS 2014. [DOI: 10.1070/rc2014v083n04abeh004383] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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26
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Morcillo SP, Miguel D, Campaña AG, Álvarez de Cienfuegos L, Justicia J, Cuerva JM. Recent applications of Cp2TiCl in natural product synthesis. Org Chem Front 2014. [DOI: 10.1039/c3qo00024a] [Citation(s) in RCA: 86] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Titanocene(iii)-based approaches have been demonstrated to be useful in the straightforward syntheses of many natural products from readily available starting materials.
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Affiliation(s)
- Sara P. Morcillo
- Department of Organic Chemistry
- University of Granada
- Granada 18071, Spain
| | - Delia Miguel
- Department of Organic Chemistry
- University of Granada
- Granada 18071, Spain
| | - Araceli G. Campaña
- Department of Organic Chemistry
- University of Granada
- Granada 18071, Spain
| | | | - José Justicia
- Department of Organic Chemistry
- University of Granada
- Granada 18071, Spain
| | - Juan M. Cuerva
- Department of Organic Chemistry
- University of Granada
- Granada 18071, Spain
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27
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Strašák T, Jaroschik F, Malý M, Čermák J, Sýkora J, Fajgar R, Karban J, Harakat D. Titanocene dichloride complexes bonded to carbosilane dendrimers via a spacer of variable length – Molecular dynamics calculations and catalysis of allylic coupling reactions. Inorganica Chim Acta 2014. [DOI: 10.1016/j.ica.2013.07.020] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
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28
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Peng Y, Luo L, Yan CS, Zhang JJ, Wang YW. Ni-Catalyzed Reductive Homocoupling of Unactivated Alkyl Bromides at Room Temperature and Its Synthetic Application. J Org Chem 2013; 78:10960-7. [DOI: 10.1021/jo401936v] [Citation(s) in RCA: 84] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Affiliation(s)
- Yu Peng
- State Key
Laboratory of Applied
Organic Chemistry, Key Laboratory of Nonferrous Metals Chemistry and
Resources Utilization of Gansu Province, and College of Chemistry
and Chemical Engineering, Lanzhou University, Lanzhou 730000, People’s Republic of China
| | - Long Luo
- State Key
Laboratory of Applied
Organic Chemistry, Key Laboratory of Nonferrous Metals Chemistry and
Resources Utilization of Gansu Province, and College of Chemistry
and Chemical Engineering, Lanzhou University, Lanzhou 730000, People’s Republic of China
| | - Chang-Song Yan
- State Key
Laboratory of Applied
Organic Chemistry, Key Laboratory of Nonferrous Metals Chemistry and
Resources Utilization of Gansu Province, and College of Chemistry
and Chemical Engineering, Lanzhou University, Lanzhou 730000, People’s Republic of China
| | - Jian-Jian Zhang
- State Key
Laboratory of Applied
Organic Chemistry, Key Laboratory of Nonferrous Metals Chemistry and
Resources Utilization of Gansu Province, and College of Chemistry
and Chemical Engineering, Lanzhou University, Lanzhou 730000, People’s Republic of China
| | - Ya-Wen Wang
- State Key
Laboratory of Applied
Organic Chemistry, Key Laboratory of Nonferrous Metals Chemistry and
Resources Utilization of Gansu Province, and College of Chemistry
and Chemical Engineering, Lanzhou University, Lanzhou 730000, People’s Republic of China
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29
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Xu H, Zhao C, Qian Q, Deng W, Gong H. Nickel-catalyzed cross-coupling of unactivated alkyl halides using bis(pinacolato)diboron as reductant. Chem Sci 2013. [DOI: 10.1039/c3sc51098k] [Citation(s) in RCA: 128] [Impact Index Per Article: 11.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
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30
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CuCl-catalyzed radical cyclisation of N-α-perchloroacyl-ketene-N,S-acetals: a new way to prepare disubstituted maleic anhydrides. Tetrahedron 2012. [DOI: 10.1016/j.tet.2012.04.117] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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31
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Ou YX, Li YY, Qian XM, Shen YM. Guanacastane-type diterpenoids from Coprinus radians. PHYTOCHEMISTRY 2012; 78:190-6. [PMID: 22521133 DOI: 10.1016/j.phytochem.2012.03.002] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/21/2011] [Revised: 11/24/2011] [Accepted: 03/01/2012] [Indexed: 05/23/2023]
Abstract
Thirteen diterpenoids, named radianspenes A-M (1-13), including three lactams radianspenes J (10), K (11) and L (12) and one dimer radianspene M (13), were isolated from fermentation products of the higher fungal strain Coprinus radians M65. All these compounds possessing guanacastane skeleton were evaluated for antitumor activity using MDA-MB-435 cell line. Radianspene C exhibited inhibitory activity with IC(50) of 0.91 μM.
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Affiliation(s)
- Yi-xin Ou
- Key Laboratory of the Ministry of Education for Cell Biology and Tumor Cell Engineering, Xiamen, Fujian 361005, PR China
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32
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Peña-López M, Ayán-Varela M, Sarandeses LA, Sestelo JP. Palladium-catalyzed cross-coupling reactions of organogold(i) phosphanes with allylic electrophiles. Org Biomol Chem 2012; 10:1686-94. [DOI: 10.1039/c2ob06788a] [Citation(s) in RCA: 12] [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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33
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Chouhan M, Sharma R, Nair VA. Cp2ZrCl2-induced Reformatsky and Barbier reactions on isatins: an efficient synthesis of 3-substituted-3-hydroxyindolin-2-ones. Appl Organomet Chem 2011. [DOI: 10.1002/aoc.1789] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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34
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Hu YL, Li F, Gu GL, Lu M. Facile and Efficient Reductive Homocoupling of Benzyl and Aryl Halides Catalyzed by Ionic Liquid [C12mim][CuCl2] in the Presence of Metallic Zinc and Copper. Catal Letters 2011. [DOI: 10.1007/s10562-010-0535-5] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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35
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Justicia J, Álvarez de Cienfuegos L, Campaña AG, Miguel D, Jakoby V, Gansäuer A, Cuerva JM. Bioinspired terpene synthesis: a radical approach. Chem Soc Rev 2011; 40:3525-37. [DOI: 10.1039/c0cs00220h] [Citation(s) in RCA: 106] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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36
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Uroos M, Lewis W, Blake AJ, Hayes CJ. Total synthesis of (+)-cymbodiacetal: a re-evaluation of the biomimetic route. J Org Chem 2010; 75:8465-70. [PMID: 21087035 DOI: 10.1021/jo101691n] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A total synthesis of (+)-cymbodiacetal (1) has been completed from (R)-(+)-limonene oxide using a hetero-Diels-Alder cycloaddition as a key step. The key Diels-Alder cycloaddition proceeds with endo-selectivity (2:1, endo/exo) in quantitative yield, and the two diastereomeric spirochroman products are isolable, stable products. Furthermore, the exo- and the endo-hetero-Diels-Alder cycloaddition products (2 and 7) can be oxidized with m-CPBA to produce (+)-cymbodiacetal (1) and the C(2)-symmetric bis-hemiacetal structure 8, respectively. The isomeric hemiacetal 9 is produced in both oxidation reactions. The structures of (+)-cymbodiacetal (1), its C(2)-symmetric diastereoisomer 8, and the isomeric hemiacetal 9 were confirmed using X-ray crystallography.
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Affiliation(s)
- Maliha Uroos
- School of Chemistry, University of Nottingham, University Park, Nottingham, U.K., NG7 2RD
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37
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Paradas M, Campaña AG, Jiménez T, Robles R, Oltra JE, Buñuel E, Justicia J, Cárdenas DJ, Cuerva JM. Understanding the Exceptional Hydrogen-Atom Donor Characteristics of Water in TiIII-Mediated Free-Radical Chemistry. J Am Chem Soc 2010; 132:12748-56. [DOI: 10.1021/ja105670h] [Citation(s) in RCA: 112] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Miguel Paradas
- Department of Organic Chemistry, Faculty of Sciences, University of Granada, Campus Fuentenueva s/n, E-18071 Granada, Spain, and Department of Organic Chemistry, Faculty of Sciences, Universidad Autónoma de Madrid, Cantoblanco E-28049, Madrid, Spain
| | - Araceli G. Campaña
- Department of Organic Chemistry, Faculty of Sciences, University of Granada, Campus Fuentenueva s/n, E-18071 Granada, Spain, and Department of Organic Chemistry, Faculty of Sciences, Universidad Autónoma de Madrid, Cantoblanco E-28049, Madrid, Spain
| | - Tania Jiménez
- Department of Organic Chemistry, Faculty of Sciences, University of Granada, Campus Fuentenueva s/n, E-18071 Granada, Spain, and Department of Organic Chemistry, Faculty of Sciences, Universidad Autónoma de Madrid, Cantoblanco E-28049, Madrid, Spain
| | - Rafael Robles
- Department of Organic Chemistry, Faculty of Sciences, University of Granada, Campus Fuentenueva s/n, E-18071 Granada, Spain, and Department of Organic Chemistry, Faculty of Sciences, Universidad Autónoma de Madrid, Cantoblanco E-28049, Madrid, Spain
| | - J. Enrique Oltra
- Department of Organic Chemistry, Faculty of Sciences, University of Granada, Campus Fuentenueva s/n, E-18071 Granada, Spain, and Department of Organic Chemistry, Faculty of Sciences, Universidad Autónoma de Madrid, Cantoblanco E-28049, Madrid, Spain
| | - Elena Buñuel
- Department of Organic Chemistry, Faculty of Sciences, University of Granada, Campus Fuentenueva s/n, E-18071 Granada, Spain, and Department of Organic Chemistry, Faculty of Sciences, Universidad Autónoma de Madrid, Cantoblanco E-28049, Madrid, Spain
| | - José Justicia
- Department of Organic Chemistry, Faculty of Sciences, University of Granada, Campus Fuentenueva s/n, E-18071 Granada, Spain, and Department of Organic Chemistry, Faculty of Sciences, Universidad Autónoma de Madrid, Cantoblanco E-28049, Madrid, Spain
| | - Diego J. Cárdenas
- Department of Organic Chemistry, Faculty of Sciences, University of Granada, Campus Fuentenueva s/n, E-18071 Granada, Spain, and Department of Organic Chemistry, Faculty of Sciences, Universidad Autónoma de Madrid, Cantoblanco E-28049, Madrid, Spain
| | - Juan M. Cuerva
- Department of Organic Chemistry, Faculty of Sciences, University of Granada, Campus Fuentenueva s/n, E-18071 Granada, Spain, and Department of Organic Chemistry, Faculty of Sciences, Universidad Autónoma de Madrid, Cantoblanco E-28049, Madrid, Spain
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38
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Diéguez HR, López A, Domingo V, Arteaga JF, Dobado JA, Herrador MM, Quílez del Moral JF, Barrero AF. Weakening C−O Bonds: Ti(III), a New Reagent for Alcohol Deoxygenation and Carbonyl Coupling Olefination. J Am Chem Soc 2009; 132:254-9. [DOI: 10.1021/ja906083c] [Citation(s) in RCA: 102] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Horacio R. Diéguez
- Department of Organic Chemistry, Institute of Biotechnology, University of Granada, Avda. Fuentenueva, 18071 Granada, Spain, and Department of Chemical Engineering, Physical Chemistry and Organic Chemistry, Faculty of Experimental Sciences, University of Huelva, Campus el Carmen, 21071 Huelva, Spain
| | - Armando López
- Department of Organic Chemistry, Institute of Biotechnology, University of Granada, Avda. Fuentenueva, 18071 Granada, Spain, and Department of Chemical Engineering, Physical Chemistry and Organic Chemistry, Faculty of Experimental Sciences, University of Huelva, Campus el Carmen, 21071 Huelva, Spain
| | - Victoriano Domingo
- Department of Organic Chemistry, Institute of Biotechnology, University of Granada, Avda. Fuentenueva, 18071 Granada, Spain, and Department of Chemical Engineering, Physical Chemistry and Organic Chemistry, Faculty of Experimental Sciences, University of Huelva, Campus el Carmen, 21071 Huelva, Spain
| | - Jesús F. Arteaga
- Department of Organic Chemistry, Institute of Biotechnology, University of Granada, Avda. Fuentenueva, 18071 Granada, Spain, and Department of Chemical Engineering, Physical Chemistry and Organic Chemistry, Faculty of Experimental Sciences, University of Huelva, Campus el Carmen, 21071 Huelva, Spain
| | - José A. Dobado
- Department of Organic Chemistry, Institute of Biotechnology, University of Granada, Avda. Fuentenueva, 18071 Granada, Spain, and Department of Chemical Engineering, Physical Chemistry and Organic Chemistry, Faculty of Experimental Sciences, University of Huelva, Campus el Carmen, 21071 Huelva, Spain
| | - M. Mar Herrador
- Department of Organic Chemistry, Institute of Biotechnology, University of Granada, Avda. Fuentenueva, 18071 Granada, Spain, and Department of Chemical Engineering, Physical Chemistry and Organic Chemistry, Faculty of Experimental Sciences, University of Huelva, Campus el Carmen, 21071 Huelva, Spain
| | - José F. Quílez del Moral
- Department of Organic Chemistry, Institute of Biotechnology, University of Granada, Avda. Fuentenueva, 18071 Granada, Spain, and Department of Chemical Engineering, Physical Chemistry and Organic Chemistry, Faculty of Experimental Sciences, University of Huelva, Campus el Carmen, 21071 Huelva, Spain
| | - Alejandro F. Barrero
- Department of Organic Chemistry, Institute of Biotechnology, University of Granada, Avda. Fuentenueva, 18071 Granada, Spain, and Department of Chemical Engineering, Physical Chemistry and Organic Chemistry, Faculty of Experimental Sciences, University of Huelva, Campus el Carmen, 21071 Huelva, Spain
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39
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Asandei AD, Chen Y, Saha G, Moran IW. Cp2TiCl-catalyzed radical chemistry: living styrene polymerizations from epoxides, aldehydes, halides, and peroxides. Tetrahedron 2008. [DOI: 10.1016/j.tet.2008.08.106] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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40
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Gansäuer A, Ndene N, Lauterbach T, Justicia J, Winkler I, Mück-Lichtenfeld C, Grimme S. Titanocene catalyzed opening of oxetanes. Tetrahedron 2008. [DOI: 10.1016/j.tet.2008.08.107] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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41
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Barczak NT, Jarvo ER. Silver-Catalyzed, Manganese-Mediated Allylation and Benzylation Reactions of Aldehydes and Ketones. European J Org Chem 2008. [DOI: 10.1002/ejoc.200800898] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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