1
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Yang L, Liang X, Ding Y, Li X, Li X, Zeng Q. Transition Metal-Catalyzed Enantioselective Synthesis of Chiral Five- and Six-Membered Benzo O-heterocycles. CHEM REC 2023; 23:e202300173. [PMID: 37401804 DOI: 10.1002/tcr.202300173] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2023] [Revised: 06/22/2023] [Indexed: 07/05/2023]
Abstract
Enantiomerically enriched five- and six-membered benzo oxygen heterocycles are privileged architectures in functional organic molecules. Over the last several years, many effective methods have been established to access these compounds. However, comprehensive documents cover updated methodologies still in highly demand. In this review, recent transition metal catalyzed transformations lead to chiral five- and six-membered benzo oxygen heterocycles are presented. The mechanism and chirality transfer or control processes are also discussed in details.
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Affiliation(s)
- Lu Yang
- Key Laboratory of General Chemistry of the National Ethnic Affairs Commission, Key Laboratory of Pollution Control Chemistry and Environmental Functional Materials for Qinghai-Tibet Plateau of the National Ethnic Affairs Commission, School of Chemistry and Environment, Southwest Minzu University, Chengdu, 610041, People's Republic of China
| | - Xiayu Liang
- College of Materials, Chemistry & Chemical Engineering, Chengdu, 610059, People's Republic of China
| | - Yuyang Ding
- Key Laboratory of General Chemistry of the National Ethnic Affairs Commission, Key Laboratory of Pollution Control Chemistry and Environmental Functional Materials for Qinghai-Tibet Plateau of the National Ethnic Affairs Commission, School of Chemistry and Environment, Southwest Minzu University, Chengdu, 610041, People's Republic of China
| | - Xinran Li
- Key Laboratory of General Chemistry of the National Ethnic Affairs Commission, Key Laboratory of Pollution Control Chemistry and Environmental Functional Materials for Qinghai-Tibet Plateau of the National Ethnic Affairs Commission, School of Chemistry and Environment, Southwest Minzu University, Chengdu, 610041, People's Republic of China
| | - Xuefeng Li
- Key Laboratory of General Chemistry of the National Ethnic Affairs Commission, Key Laboratory of Pollution Control Chemistry and Environmental Functional Materials for Qinghai-Tibet Plateau of the National Ethnic Affairs Commission, School of Chemistry and Environment, Southwest Minzu University, Chengdu, 610041, People's Republic of China
| | - Qingle Zeng
- College of Materials, Chemistry & Chemical Engineering, Chengdu, 610059, People's Republic of China
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2
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Zhang X, Zhou Q, Zhou Y, Wang Z, Wang J, Wang M. Asymmetric synthesis of chiral (thio)chromanes and exploration on their structure-activity relationship in macrophages. RSC Adv 2023; 13:30391-30400. [PMID: 37854489 PMCID: PMC10580023 DOI: 10.1039/d3ra06428j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2023] [Accepted: 10/05/2023] [Indexed: 10/20/2023] Open
Abstract
A CuCl/(R,R)-Ph-BPE-catalyzed enantioselective hydroallylation of 2H-chromenes and 2H-thiochromenes with allylic phosphate electrophiles is developed, which enables highly efficient and atom-economical asymmetric access to a series of 4-allyl chromanes and thiochromanes in high yields (up to 91%) with excellent enantioselectivities (up to 99% ee). These valuable chiral chromane and thiochromane products can serve as crucial intermediates for accessing bioactive compounds containing oxygen and sulfur atoms. In addition, the antioxidant and anti-inflammatory effects of various chromanes and thiochromanes were investigated in RAW 264.7 macrophages. The chromanes and thiochromanes exhibited significant inhibitory effects on the production of reactive oxygen species (ROS) and the secretion of pro-inflammatory cytokines, including interleukin-6 (IL-6) and tumor necrosis factor-α (TNF-α). These findings indicate that the newly synthesized chromanes and thiochromanes hold promise as potential lead compounds for the development of antioxidant and anti-inflammatory drugs.
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Affiliation(s)
- Xiao Zhang
- School of Biological Science, The University of Hong Kong Hong Kong 999077 China
- Department of Chemistry, Southern University of Science and Technology Shenzhen 518055 China
| | - Qian Zhou
- Shenzhen Key Laboratory of Food Nutrition and Health, Institute for Advanced Study, Shenzhen University Shenzhen 518060 China
| | - Yue Zhou
- Shenzhen Key Laboratory of Food Nutrition and Health, Institute for Advanced Study, Shenzhen University Shenzhen 518060 China
| | - Zihao Wang
- School of Chinese Medicine, Hong Kong Baptist University Hong Kong 999077 China
- Centre for Chinese Herbal Medicine Drug Development, Hong Kong Baptist University Hong Kong 999077 China
| | - Jun Wang
- Department of Chemistry, Southern University of Science and Technology Shenzhen 518055 China
- Department of Chemistry, Hong Kong Baptist University Hong Kong 999077 China
| | - Mingfu Wang
- School of Biological Science, The University of Hong Kong Hong Kong 999077 China
- Shenzhen Key Laboratory of Food Nutrition and Health, Institute for Advanced Study, Shenzhen University Shenzhen 518060 China
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3
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Liu H, Lau VHM, Xu P, Chan TH, Huang Z. Diverse synthesis of α-tertiary amines and tertiary alcohols via desymmetric reduction of malonic esters. Nat Commun 2022; 13:4759. [PMID: 35963867 PMCID: PMC9376102 DOI: 10.1038/s41467-022-32560-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2022] [Accepted: 08/03/2022] [Indexed: 11/27/2022] Open
Abstract
Amines and alcohols with a fully substituted α-carbon are structures of great value in organic synthesis and drug discovery. While conventional methods towards these motifs often rely on enantioselective carbon-carbon or carbon-heteroatom bond formation reactions, a desymmetric method is developed here by selectively hydrosilylating one of the esters of easily accessible α-substituted α-amino- and -oxymalonic esters. The desymmetrization is enabled by a suite of dinuclear zinc catalysts with pipecolinol-derived tetradentate ligands and can accommodate a diverse panel of heteroatom substituents, including secondary amides, tertiary amines, and ethers of different sizes. The polyfunctionalized reduction products, in return, have provided expeditious approaches to enantioenriched nitrogen- and oxygen-containing molecules, including dipeptides, vitamin analogs, and natural metabolites. Chiral α-tertiary amines and tertiary alcohols are prevalent in bioactive molecules yet challenging targets to access. Here, the authors provide a dinuclear zinc-catalyzed desymmetric approach based on readily available malonic esters.
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Affiliation(s)
- Haichao Liu
- State Key Laboratory of Synthetic Chemistry, Department of Chemistry, The University of Hong Kong, Hong Kong, China
| | - Vincent Ho Man Lau
- State Key Laboratory of Synthetic Chemistry, Department of Chemistry, The University of Hong Kong, Hong Kong, China
| | - Pan Xu
- State Key Laboratory of Synthetic Chemistry, Department of Chemistry, The University of Hong Kong, Hong Kong, China
| | - Tsz Hin Chan
- State Key Laboratory of Synthetic Chemistry, Department of Chemistry, The University of Hong Kong, Hong Kong, China
| | - Zhongxing Huang
- State Key Laboratory of Synthetic Chemistry, Department of Chemistry, The University of Hong Kong, Hong Kong, China.
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4
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Kondoh A, Terada M. Synthesis of 2,2‐Disubstituted 2
H
‐Chromenes through Carbon‐Carbon Bond Formation Utilizing a [1,2]‐Phospha‐Brook Rearrangement under Brønsted Base Catalysis. Chemistry 2022; 28:e202201198. [DOI: 10.1002/chem.202201198] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2022] [Indexed: 11/08/2022]
Affiliation(s)
- Azusa Kondoh
- Research and Analytical Center for Giant Molecules Graduate School of Science Tohoku University Aramaki, Aoba-ku Sendai 980-8578 Japan
| | - Masahiro Terada
- Department of Chemistry Graduate School of Science Tohoku University Aramaki, Aoba-ku Sendai 980-8578 Japan
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5
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Baars J, Grimm I, Blunk D, Neudörfl J, Schmalz H. Enantioselektive Totalsynthese und Strukturrevision von Dysiherbol A. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202105733] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Julian Baars
- University of Cologne Department of Chemistry Greinstraße 4 50939 Köln Deutschland
| | - Isabelle Grimm
- University of Cologne Department of Chemistry Greinstraße 4 50939 Köln Deutschland
| | - Dirk Blunk
- University of Cologne Department of Chemistry Greinstraße 4 50939 Köln Deutschland
| | - Jörg‐Martin Neudörfl
- University of Cologne Department of Chemistry Greinstraße 4 50939 Köln Deutschland
| | - Hans‐Günther Schmalz
- University of Cologne Department of Chemistry Greinstraße 4 50939 Köln Deutschland
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6
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Baars J, Grimm I, Blunk D, Neudörfl J, Schmalz H. Enantioselective Total Synthesis and Structural Revision of Dysiherbol A. Angew Chem Int Ed Engl 2021; 60:14915-14920. [PMID: 33978302 PMCID: PMC8251742 DOI: 10.1002/anie.202105733] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2021] [Indexed: 12/25/2022]
Abstract
A 12-step total synthesis of the natural product dysiherbol A, a strongly anti-inflammatory and anti-tumor avarane meroterpene isolated from the marine sponge Dysidea sp., was elaborated. As key steps, the synthesis features an enantioselective Cu-catalyzed 1,4-addition/enolate-trapping opening move, an Au-catalyzed double cyclization to build up the tetracyclic core-carbon skeleton, and a late installation of the C5-bridgehead methyl group via proton-induced cyclopropane opening associated with spontaneous cyclic ether formation. The obtained pentacyclic compound (corresponding to an anhydride of the originally suggested structure for dysiherbol A) showed identical spectroscopic data as the natural product, but an opposite molecular rotation. CD-spectroscopic measurements finally confirmed that both the constitution and the absolute configuration of the originally proposed structure of (+)-dysiherbol A need to be revised.
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Affiliation(s)
- Julian Baars
- University of CologneDepartment of ChemistryGreinstrasse 450939CologneGermany
| | - Isabelle Grimm
- University of CologneDepartment of ChemistryGreinstrasse 450939CologneGermany
| | - Dirk Blunk
- University of CologneDepartment of ChemistryGreinstrasse 450939CologneGermany
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7
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Tsai CC, Sandford C, Wu T, Chen B, Sigman MS, Toste FD. Enantioselective Intramolecular Allylic Substitution via Synergistic Palladium/Chiral Phosphoric Acid Catalysis: Insight into Stereoinduction through Statistical Modeling. Angew Chem Int Ed Engl 2020; 59:14647-14655. [PMID: 32453890 PMCID: PMC7686151 DOI: 10.1002/anie.202006237] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2020] [Revised: 05/25/2020] [Indexed: 11/05/2022]
Abstract
The mode of asymmetric induction in an enantioselective intramolecular allylic substitution reaction catalyzed by a combination of palladium and a chiral phosphoric acid was investigated by a combined experimental and statistical modeling approach. Experiments to probe nonlinear effects, the reactivity of deuterium-labeled substrates, and control experiments revealed that nucleophilic attack to the π-allylpalladium intermediate is the enantio-determining step, in which the chiral phosphate anion is involved in stereoinduction. Using multivariable linear regression analysis, we determined that multiple noncovalent interactions with the chiral environment of the phosphate anion are integral to enantiocontrol in the transition state. The synthetic protocol to form chiral pyrrolidines was further applied to the asymmetric construction of C-O bonds at fully substituted carbon centers in the synthesis of chiral 2,2-disubstituted benzomorpholines.
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Affiliation(s)
- Cheng-Che Tsai
- Department of Chemistry, University of California, Berkeley Berkeley, CA 94720 (USA)
| | - Christopher Sandford
- Department of Chemistry, University of Utah 315 South 1400 East, Salt Lake City, UT 84112 (USA)
| | - Tao Wu
- Department of Chemistry, University of California, Berkeley Berkeley, CA 94720 (USA)
| | - Buyun Chen
- Department of Chemistry, University of California, Berkeley Berkeley, CA 94720 (USA)
| | - Matthew S. Sigman
- Department of Chemistry, University of Utah 315 South 1400 East, Salt Lake City, UT 84112 (USA)
| | - F. Dean Toste
- Department of Chemistry, University of California, Berkeley Berkeley, CA 94720 (USA)
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8
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Tsai C, Sandford C, Wu T, Chen B, Sigman MS, Toste FD. Enantioselective Intramolecular Allylic Substitution via Synergistic Palladium/Chiral Phosphoric Acid Catalysis: Insight into Stereoinduction through Statistical Modeling. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202006237] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Cheng‐Che Tsai
- Department of Chemistry University of California, Berkeley Berkeley CA 94720 USA
- Present address: Department of Chemistry Tunghai University Taichung City 40704 Taiwan
| | - Christopher Sandford
- Department of Chemistry University of Utah 315 South 1400 East Salt Lake City UT 84112 USA
| | - Tao Wu
- Department of Chemistry University of California, Berkeley Berkeley CA 94720 USA
| | - Buyun Chen
- Department of Chemistry University of California, Berkeley Berkeley CA 94720 USA
| | - Matthew S. Sigman
- Department of Chemistry University of Utah 315 South 1400 East Salt Lake City UT 84112 USA
| | - F. Dean Toste
- Department of Chemistry University of California, Berkeley Berkeley CA 94720 USA
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9
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Yang Q, Li S, Wang J(J. Asymmetric Synthesis of Chiral Chromanes by Copper‐Catalyzed Hydroamination of 2
H
‐Chromenes. ChemCatChem 2020. [DOI: 10.1002/cctc.202000601] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Qingjing Yang
- School of Chemistry and Chemical EngineeringHarbin Institute of Technology Harbin 150080 P. R. China
- Department of ChemistrySouthern University of Science and Technology Shenzhen Guangdong 518055 P. R. China
| | - Sifeng Li
- Department of ChemistrySouthern University of Science and Technology Shenzhen Guangdong 518055 P. R. China
| | - Jun (Joelle) Wang
- Department of ChemistrySouthern University of Science and Technology Shenzhen Guangdong 518055 P. R. China
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10
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Ratsch F, Schlundt W, Albat D, Zimmer A, Neudörfl JM, Netscher T, Schmalz HG. Total Synthesis of α-Tocopherol through Enantioselective Iridium-Catalyzed Fragmentation of a Spiro-Cyclobutanol Intermediate. Chemistry 2019; 25:4941-4945. [PMID: 30741456 DOI: 10.1002/chem.201900564] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2019] [Indexed: 11/10/2022]
Abstract
A conceptionally new strategy for the asymmetric (2R-selective) synthesis of α-tocopherol (vitamin E) was developed. In the stereocontrolled key step, a prochiral spiro[chromane-2,3'-cyclobutanol] unit is effectively desymmetrized under C-C bond activation in an unprecedented iridium-catalyzed transformation using (S)-DTBM-SegPhos as a chiral ligand (e.r. 97:3). To complete the synthesis, the side chain was attached through Ru-catalyzed cross-metathesis employing an alkene derived from (R,R)-hexahydrofarnesol. To suppress epimerization during the final hydrogenation, PtO2 had to be used as a catalyst instead of Pd/C. In an alternative approach (employing a propargyl-substituted spiro-cyclobutanol), the side chain was constructed prior to the Ir-catalyzed ring fragmentation (>99:1 d.r.) through enyne cross-metathesis (using an alkene derived from (R)-dihydrocitronellal) followed by Cr-catalyzed 1,4-hydrogenation and (diastereoselective) Pfaltz hydrogenation of the resulting triple-substituted olefin. The work demonstrates the potential of iridium catalysis for enantioselective C-C bond activation.
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Affiliation(s)
- Friederike Ratsch
- Department of Chemistry, University of Cologne, Greinstrasse 4, 50939, Koeln, Germany
| | - Waldemar Schlundt
- Department of Chemistry, University of Cologne, Greinstrasse 4, 50939, Koeln, Germany
| | - Dominik Albat
- Department of Chemistry, University of Cologne, Greinstrasse 4, 50939, Koeln, Germany
| | - Anne Zimmer
- Department of Chemistry, University of Cologne, Greinstrasse 4, 50939, Koeln, Germany
| | - Jörg-Martin Neudörfl
- Department of Chemistry, University of Cologne, Greinstrasse 4, 50939, Koeln, Germany
| | - Thomas Netscher
- Research and Development, DSM Nutritional Products, P.O. Box 2676, CH-4002, Basel, Switzerland
| | - Hans-Günther Schmalz
- Department of Chemistry, University of Cologne, Greinstrasse 4, 50939, Koeln, Germany
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11
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Hayama N, Kuramoto R, Földes T, Nishibayashi K, Kobayashi Y, Pápai I, Takemoto Y. Mechanistic Insight into Asymmetric Hetero-Michael Addition of α,β-Unsaturated Carboxylic Acids Catalyzed by Multifunctional Thioureas. J Am Chem Soc 2018; 140:12216-12225. [PMID: 30215516 DOI: 10.1021/jacs.8b07511] [Citation(s) in RCA: 56] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Carboxylic acids and their corresponding carboxylate anions are generally utilized as Brønsted acids/bases and oxygen nucleophiles in organic synthesis. However, a few asymmetric reactions have used carboxylic acids as electrophiles. Although chiral thioureas bearing both arylboronic acid and tertiary amine were found to promote the aza-Michael addition of BnONH2 to α,β-unsaturated carboxylic acids with moderate to good enantioselectivities, the reaction mechanism remains to be clarified. Detailed investigation of the reaction using spectroscopic analysis and kinetic studies identified tetrahedral borate complexes, comprising two carboxylate anions, as reaction intermediates. We realized a dramatic improvement in product enantioselectivity with the addition of 1 equiv of benzoic acid. In this aza-Michael reaction, the boronic acid not only activates the carboxylate ligand as a Lewis acid, together with the thiourea NH-protons, but also functions as a Brønsted base through a benzoyloxy anion to activate the nucleophile. Moreover, molecular sieves were found to play an important role in generating the ternary borate complexes, which were crucial for obtaining high enantioselectivity as demonstrated by DFT calculations. We also designed a new thiourea catalyst for the intramolecular oxa-Michael addition to suppress another catalytic pathway via a binary borate complex using steric hindrance between the catalyst and substrate. Finally, to demonstrate the synthetic versatility of both hetero-Michael additions, we used them to accomplish the asymmetric synthesis of key intermediates in pharmaceutically important molecules, including sitagliptin and α-tocopherol.
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Affiliation(s)
- Noboru Hayama
- Graduate School of Pharmaceutical Sciences , Kyoto University , Yoshida, Sakyo-ku, Kyoto 606-8501 , Japan
| | - Ryuta Kuramoto
- Graduate School of Pharmaceutical Sciences , Kyoto University , Yoshida, Sakyo-ku, Kyoto 606-8501 , Japan
| | - Tamás Földes
- Institute of Organic Chemistry, Research Centre for Natural Sciences , Hungarian Academy of Sciences , Magyar tudósok körútja 2 , H-1117 Budapest , Hungary
| | - Kazuya Nishibayashi
- Graduate School of Pharmaceutical Sciences , Kyoto University , Yoshida, Sakyo-ku, Kyoto 606-8501 , Japan
| | - Yusuke Kobayashi
- Graduate School of Pharmaceutical Sciences , Kyoto University , Yoshida, Sakyo-ku, Kyoto 606-8501 , Japan
| | - Imre Pápai
- Institute of Organic Chemistry, Research Centre for Natural Sciences , Hungarian Academy of Sciences , Magyar tudósok körútja 2 , H-1117 Budapest , Hungary
| | - Yoshiji Takemoto
- Graduate School of Pharmaceutical Sciences , Kyoto University , Yoshida, Sakyo-ku, Kyoto 606-8501 , Japan
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12
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Abstract
Interest in homogeneous gold catalysis has undergone a marked increase. As strong yet air- and moisture-tolerant π-acids, cationic gold(i) complexes have been shown to catalyze diverse transformations of alkenes, alkynes and allenes, opening new opportunities for chemical synthesis. The development of efficient asymmetric variants is required in order to take full advantage of the preparative potential of these transformations. During the last few years, the chemical community has achieved tremendous success in the area. This review highlights the updated progress (2011-2015) in enantioselective gold catalysis. The discussion is classified according to the π-bonds activated by gold(i), in an order of alkynes, allenes and alkenes. Other gold activation modes, such as σ-Lewis acid catalyzed reactions and transformations of diazo compounds are also discussed.
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Affiliation(s)
- Weiwei Zi
- Department of Chemistry, University of California, Berkeley, CA 94720, USA.
| | - F Dean Toste
- Department of Chemistry, University of California, Berkeley, CA 94720, USA.
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13
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Ghorpade SA, Sawant DN, Renn D, Zernickel A, Du W, Sekar N, Eppinger J. Aqueous protocol for allylic arylation of cinnamyl acetates with sodium tetraphenylborate using a Bedford-type palladacycle catalyst. NEW J CHEM 2018. [DOI: 10.1039/c8nj00660a] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
Allylic arylation using 0.002 mol% of a Bedford-type palladacycle catalyst is described under mild reaction conditions.
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Affiliation(s)
- Seema Arun Ghorpade
- King Abdullah University of Science and Technology, Division of Physical Sciences & Engineering and KAUST Catalysis Center (KCC)
- Thuwal 23955-6900
- Saudi Arabia
- Department of Dyestuff Technology
- Institute of Chemical Technology (Deemed University)
| | - Dinesh Nanaji Sawant
- King Abdullah University of Science and Technology, Division of Physical Sciences & Engineering and KAUST Catalysis Center (KCC)
- Thuwal 23955-6900
- Saudi Arabia
| | - Dominik Renn
- King Abdullah University of Science and Technology, Division of Physical Sciences & Engineering and KAUST Catalysis Center (KCC)
- Thuwal 23955-6900
- Saudi Arabia
| | - Anna Zernickel
- King Abdullah University of Science and Technology, Division of Physical Sciences & Engineering and KAUST Catalysis Center (KCC)
- Thuwal 23955-6900
- Saudi Arabia
| | - Weiyuan Du
- King Abdullah University of Science and Technology, Division of Physical Sciences & Engineering and KAUST Catalysis Center (KCC)
- Thuwal 23955-6900
- Saudi Arabia
| | - Nagaiyan Sekar
- Department of Dyestuff Technology
- Institute of Chemical Technology (Deemed University)
- N. Parekh Marg
- Matunga
- Mumbai-400019
| | - Jörg Eppinger
- King Abdullah University of Science and Technology, Division of Physical Sciences & Engineering and KAUST Catalysis Center (KCC)
- Thuwal 23955-6900
- Saudi Arabia
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14
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Zhang Y, Wang Q, Wang T, He H, Yang W, Zhang X, Cai Q. Enantioselective Synthesis of Chiral Oxygen-Containing Heterocycles Using Copper-Catalyzed Aryl C-O Coupling Reactions via Asymmetric Desymmetrization. J Org Chem 2017; 82:1458-1463. [PMID: 28054776 DOI: 10.1021/acs.joc.6b02646] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
An enantioselective desymmetric aryl C-O coupling reaction was demonstrated under the catalysis of CuI and a chiral cyclic diamine ligand. A series of chiral oxygen-containing heterocyclic units such as 2,3-dihydrobenzofurans, chromans, and 1,4-benzodioxanes with tertiary or quaternary stereocarbon centers were synthesized with this method. DFT calculations were also carried out for a better understanding of the model for enantiocontrol.
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Affiliation(s)
- Yong Zhang
- College of Chemical and Pharmaceutical Engineering, Hebei University of Science and Technology , Shijiazhuang, 050018, China
| | - Qiuyan Wang
- College of Chemical and Pharmaceutical Engineering, Hebei University of Science and Technology , Shijiazhuang, 050018, China.,College of Pharmacy, Jinan University , No. 601 Huangpu Avenue West, Guangzhou, 510632, China
| | - Ting Wang
- Laboratory of Computational Chemistry and Drug Design, Key Laboratory of Chemical Genomics, Peking University Shenzhen Graduate School , Shenzhen, 518055, China
| | - Huan He
- College of Chemical and Pharmaceutical Engineering, Hebei University of Science and Technology , Shijiazhuang, 050018, China.,College of Pharmacy, Jinan University , No. 601 Huangpu Avenue West, Guangzhou, 510632, China
| | - Wenqiang Yang
- College of Pharmacy, Linyi University , Shuangling Road, Linyi, 276000, China
| | - Xinhao Zhang
- Laboratory of Computational Chemistry and Drug Design, Key Laboratory of Chemical Genomics, Peking University Shenzhen Graduate School , Shenzhen, 518055, China
| | - Qian Cai
- College of Pharmacy, Jinan University , No. 601 Huangpu Avenue West, Guangzhou, 510632, China
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15
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Reddy RR, Gudup SS, Ghorai P. Organocatalytic, Enantioselective Synthesis of Cyclohexadienone Containing Hindered Spirocyclic Ethers through an Oxidative Dearomatization/Oxa-Michael Addition Sequence. Angew Chem Int Ed Engl 2016; 55:15115-15119. [DOI: 10.1002/anie.201607039] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2016] [Revised: 08/24/2016] [Indexed: 12/21/2022]
Affiliation(s)
- Reddy Rajasekhar Reddy
- Department of Chemistry; Indian Institute of Science Education and Research (IISER) Bhopal; Bhopal By-pass Road, Bhauri Bhopal- 462066 India
| | - Satish Sonbarao Gudup
- Department of Chemistry; Indian Institute of Science Education and Research (IISER) Bhopal; Bhopal By-pass Road, Bhauri Bhopal- 462066 India
| | - Prasanta Ghorai
- Department of Chemistry; Indian Institute of Science Education and Research (IISER) Bhopal; Bhopal By-pass Road, Bhauri Bhopal- 462066 India
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16
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Reddy RR, Gudup SS, Ghorai P. Organocatalytic, Enantioselective Synthesis of Cyclohexadienone Containing Hindered Spirocyclic Ethers through an Oxidative Dearomatization/Oxa-Michael Addition Sequence. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201607039] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Reddy Rajasekhar Reddy
- Department of Chemistry; Indian Institute of Science Education and Research (IISER) Bhopal; Bhopal By-pass Road, Bhauri Bhopal- 462066 India
| | - Satish Sonbarao Gudup
- Department of Chemistry; Indian Institute of Science Education and Research (IISER) Bhopal; Bhopal By-pass Road, Bhauri Bhopal- 462066 India
| | - Prasanta Ghorai
- Department of Chemistry; Indian Institute of Science Education and Research (IISER) Bhopal; Bhopal By-pass Road, Bhauri Bhopal- 462066 India
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17
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Liu J, Wang X, Xu L, Hao Z, Wang L, Xiao J. One step synthesis of 2-alkenylchromanes via inverse electron-demand Hetero-Diels–Alder reaction of o -quinone methide with unactivated dienes. Tetrahedron 2016. [DOI: 10.1016/j.tet.2016.10.027] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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18
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19
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Ji YZ, Wang M, Li HJ, Liu Y, Wu YC. Direct Sulfination of Nonactivated Alcohols with Arylsulfonylmethyl Isocyanides. European J Org Chem 2016. [DOI: 10.1002/ejoc.201600629] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
- Yuan-Zhao Ji
- School of Marine Science and Technology; Harbin Institute of Technology; No. 2, Wenhuaxi Road 264209 Weihai P. R. China
| | - Meirong Wang
- School of Materials Science and Engineering; Harbin Institute of Technology; No. 2, Wenhuaxi Road 264209 Weihai P. R. China
| | - Hui-Jing Li
- School of Marine Science and Technology; Harbin Institute of Technology; No. 2, Wenhuaxi Road 264209 Weihai P. R. China
| | - Ying Liu
- School of Marine Science and Technology; Harbin Institute of Technology; No. 2, Wenhuaxi Road 264209 Weihai P. R. China
| | - Yan-Chao Wu
- School of Marine Science and Technology; Harbin Institute of Technology; No. 2, Wenhuaxi Road 264209 Weihai P. R. China
- Beijing National Laboratory for Molecular Sciences (BNLMS); Institute of Chemistry Chinese Academy of Sciences; No.2, 1st North Street, Zhongguancun 100190 Beijing P. R. China
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20
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Liu X, Gujarathi S, Zhang X, Shao L, Boerma M, Compadre CM, Crooks PA, Hauer-Jensen M, Zhou D, Zheng G. Synthesis of (2 R,8' S,3' E)-δ-tocodienol, a tocoflexol family member designed to have a superior pharmacokinetic profile compared to δ-tocotrienol. Tetrahedron 2016; 72:4001-4006. [PMID: 27773949 PMCID: PMC5070675 DOI: 10.1016/j.tet.2016.05.028] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
A group of side chain partially saturated tocotrienol analogues, namely tocoflexols, have been previously designed in an effort to improve the pharmacokinetic properties of tocotrienols. (2R,8'S,3'E,11'E)-δ-Tocodienol (1) was predicted to be a high value tocoflexol for further pharmacological evaluation. We now report here an efficient 8-step synthetic route to compound 1 utilizing naturally-occurring δ-tocotrienol as a starting material (24% total yield). The key step in the synthesis is oxidative olefin cleavage of δ-tocotrienol to afford the chroman core of 1 with retention of chirality at the C-2 stereocenter.
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Affiliation(s)
- Xingui Liu
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Arkansas for Medical Sciences, Little Rock, AR 72205, United States
| | - Satheesh Gujarathi
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Arkansas for Medical Sciences, Little Rock, AR 72205, United States
| | - Xuan Zhang
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Arkansas for Medical Sciences, Little Rock, AR 72205, United States
| | - Lijian Shao
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Arkansas for Medical Sciences, Little Rock, AR 72205, United States
| | - Marjan Boerma
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Arkansas for Medical Sciences, Little Rock, AR 72205, United States
| | - Cesar M. Compadre
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Arkansas for Medical Sciences, Little Rock, AR 72205, United States
| | - Peter A. Crooks
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Arkansas for Medical Sciences, Little Rock, AR 72205, United States
| | - Martin Hauer-Jensen
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Arkansas for Medical Sciences, Little Rock, AR 72205, United States
| | - Daohong Zhou
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Arkansas for Medical Sciences, Little Rock, AR 72205, United States
| | - Guangrong Zheng
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Arkansas for Medical Sciences, Little Rock, AR 72205, United States
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21
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The chemistry of the carbon-transition metal double and triple bond: Annual survey covering the year 2014. Coord Chem Rev 2016. [DOI: 10.1016/j.ccr.2015.09.012] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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22
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Hu N, Li K, Wang Z, Tang W. Synthesis of Chiral 1,4-Benzodioxanes and Chromans by Enantioselective Palladium-Catalyzed Alkene Aryloxyarylation Reactions. Angew Chem Int Ed Engl 2016; 55:5044-8. [DOI: 10.1002/anie.201600379] [Citation(s) in RCA: 71] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2016] [Revised: 02/03/2016] [Indexed: 11/07/2022]
Affiliation(s)
- Naifu Hu
- State Key Laboratory of Bio-organic and Natural Products Chemistry; Shanghai Institute of Organic Chemistry; Chinese Academy of Sciences; 345 Ling Ling Rd Shanghai 200032 China
| | - Ke Li
- State Key Laboratory of Bio-organic and Natural Products Chemistry; Shanghai Institute of Organic Chemistry; Chinese Academy of Sciences; 345 Ling Ling Rd Shanghai 200032 China
| | - Zheng Wang
- Innovation Center China; AstraZeneca Global R&D; China
| | - Wenjun Tang
- State Key Laboratory of Bio-organic and Natural Products Chemistry; Shanghai Institute of Organic Chemistry; Chinese Academy of Sciences; 345 Ling Ling Rd Shanghai 200032 China
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23
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Synthesis of Chiral 1,4-Benzodioxanes and Chromans by Enantioselective Palladium-Catalyzed Alkene Aryloxyarylation Reactions. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201600379] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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24
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Affiliation(s)
- Arianna Quintavalla
- Department of Chemistry “G. Ciamician”; Alma Mater Studiorum-University of Bologna; Via Selmi 2 40126 Bologna Italy
| | - Marco Bandini
- Department of Chemistry “G. Ciamician”; Alma Mater Studiorum-University of Bologna; Via Selmi 2 40126 Bologna Italy
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25
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Liao J, Guo W, Zhang Z, Tang X, Wu W, Jiang H. Metal-Free Catalyzed Regioselective Allylic Trifluoromethanesulfonylation of Aromatic Allylic Alcohols with Sodium Trifluoromethanesulfinate. J Org Chem 2016; 81:1304-9. [DOI: 10.1021/acs.joc.5b02674] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Jianhua Liao
- School
of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, China
- School
of Pharmaceutical Sciences, Gannan Medical University, Ganzhou, Jiangxi 341000, China
| | - Wei Guo
- School
of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, China
| | - Zhenming Zhang
- School
of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, China
| | - Xiaodong Tang
- School
of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, China
| | - Wanqing Wu
- School
of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, China
| | - Huanfeng Jiang
- School
of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, China
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26
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Pflästerer D, Hashmi ASK. Gold catalysis in total synthesis – recent achievements. Chem Soc Rev 2016; 45:1331-67. [DOI: 10.1039/c5cs00721f] [Citation(s) in RCA: 600] [Impact Index Per Article: 75.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
The most recent achievements of gold catalysed transformations applied in total synthesis of natural products are reviewed and analysed.
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Affiliation(s)
- Daniel Pflästerer
- Organisch-Chemisches Institut
- Universität Heidelberg
- 69120 Heidelberg
- Germany
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27
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Xu JX, Ye F, Bai XF, Zhang J, Xu Z, Zheng ZJ, Xu LW. Fei-Phos ligand-controlled asymmetric palladium-catalyzed allylic substitutions with structurally diverse nucleophiles: scope and limitations. RSC Adv 2016. [DOI: 10.1039/c6ra09657c] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023] Open
Abstract
The asymmetric palladium-catalysed alkylation of structurally diverse nucleophiles, including alcohols, activated methylene compounds, indoles, and aromatic amines, led to the formation of corresponding products in good yields and high enantioselectivities (up to 99% ee).
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Affiliation(s)
- Jian-Xing Xu
- Key Laboratory of Organosilicon Chemistry and Material Technology of Ministry of Education
- Hangzhou Normal University
- Hangzhou 311121
- P. R. China
| | - Fei Ye
- Key Laboratory of Organosilicon Chemistry and Material Technology of Ministry of Education
- Hangzhou Normal University
- Hangzhou 311121
- P. R. China
| | - Xing-Feng Bai
- Key Laboratory of Organosilicon Chemistry and Material Technology of Ministry of Education
- Hangzhou Normal University
- Hangzhou 311121
- P. R. China
- State Key Laboratory for Oxo Synthesis and Selective Oxidation Lanzhou Institute of Chemical Physics
| | - Jin Zhang
- Key Laboratory of Organosilicon Chemistry and Material Technology of Ministry of Education
- Hangzhou Normal University
- Hangzhou 311121
- P. R. China
| | - Zheng Xu
- Key Laboratory of Organosilicon Chemistry and Material Technology of Ministry of Education
- Hangzhou Normal University
- Hangzhou 311121
- P. R. China
| | - Zhan-Jiang Zheng
- Key Laboratory of Organosilicon Chemistry and Material Technology of Ministry of Education
- Hangzhou Normal University
- Hangzhou 311121
- P. R. China
| | - Li-Wen Xu
- Key Laboratory of Organosilicon Chemistry and Material Technology of Ministry of Education
- Hangzhou Normal University
- Hangzhou 311121
- P. R. China
- State Key Laboratory for Oxo Synthesis and Selective Oxidation Lanzhou Institute of Chemical Physics
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28
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Xu JX, Ye F, Bai XF, Cui YM, Xu Z, Zheng ZJ, Xu LW. A mechanistic study on multifunctional Fei-Phos ligand-controlled asymmetric palladium-catalyzed allylic substitutions. RSC Adv 2016. [DOI: 10.1039/c6ra15665g] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023] Open
Abstract
Mechanistic studies were performed for the clarification of the role of multifunctional Fei-Phos in allylic substitution reactions, in which it is proved to be a diphosphine-controlled catalytic asymmetric allylic alkylation.
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Affiliation(s)
- Jian-Xing Xu
- Key Laboratory of Organosilicon Chemistry and Material Technology of Ministry of Education
- Hangzhou Normal University
- Hangzhou 311121
- P. R. China
| | - Fei Ye
- Key Laboratory of Organosilicon Chemistry and Material Technology of Ministry of Education
- Hangzhou Normal University
- Hangzhou 311121
- P. R. China
| | - Xing-Feng Bai
- Key Laboratory of Organosilicon Chemistry and Material Technology of Ministry of Education
- Hangzhou Normal University
- Hangzhou 311121
- P. R. China
- State Key Laboratory for Oxo Synthesis and Selective Oxidation
| | - Yu-Ming Cui
- Key Laboratory of Organosilicon Chemistry and Material Technology of Ministry of Education
- Hangzhou Normal University
- Hangzhou 311121
- P. R. China
| | - Zheng Xu
- Key Laboratory of Organosilicon Chemistry and Material Technology of Ministry of Education
- Hangzhou Normal University
- Hangzhou 311121
- P. R. China
| | - Zhan-Jiang Zheng
- Key Laboratory of Organosilicon Chemistry and Material Technology of Ministry of Education
- Hangzhou Normal University
- Hangzhou 311121
- P. R. China
| | - Li-Wen Xu
- Key Laboratory of Organosilicon Chemistry and Material Technology of Ministry of Education
- Hangzhou Normal University
- Hangzhou 311121
- P. R. China
- State Key Laboratory for Oxo Synthesis and Selective Oxidation
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29
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Wang PS, Liu P, Zhai YJ, Lin HC, Han ZY, Gong LZ. Asymmetric Allylic C–H Oxidation for the Synthesis of Chromans. J Am Chem Soc 2015; 137:12732-5. [DOI: 10.1021/jacs.5b08477] [Citation(s) in RCA: 108] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
- Pu-Sheng Wang
- Hefei
National Laboratory for Physical Sciences at the Microscale and Department
of Chemistry, University of Science and Technology of China, Hefei 230026, China
| | - Peng Liu
- Hefei
National Laboratory for Physical Sciences at the Microscale and Department
of Chemistry, University of Science and Technology of China, Hefei 230026, China
| | - Yu-Jia Zhai
- Hefei
National Laboratory for Physical Sciences at the Microscale and Department
of Chemistry, University of Science and Technology of China, Hefei 230026, China
| | - Hua-Chen Lin
- Hefei
National Laboratory for Physical Sciences at the Microscale and Department
of Chemistry, University of Science and Technology of China, Hefei 230026, China
| | - Zhi-Yong Han
- Hefei
National Laboratory for Physical Sciences at the Microscale and Department
of Chemistry, University of Science and Technology of China, Hefei 230026, China
| | - Liu-Zhu Gong
- Hefei
National Laboratory for Physical Sciences at the Microscale and Department
of Chemistry, University of Science and Technology of China, Hefei 230026, China
- Collaborative Innovation Center of Chemical Science and Engineering, Tianjin, China
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30
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Casanova N, Seoane A, Mascareñas JL, Gulías M. Rhodium-Catalyzed (5+1) Annulations Between 2-Alkenylphenols and Allenes: A Practical Entry to 2,2-Disubstituted 2H-Chromenes. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201410350] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
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31
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Casanova N, Seoane A, Mascareñas JL, Gulías M. Rhodium-catalyzed (5+1) annulations between 2-alkenylphenols and allenes: a practical entry to 2,2-disubstituted 2H-chromenes. Angew Chem Int Ed Engl 2015; 54:2374-7. [PMID: 25580565 DOI: 10.1002/anie.201410350] [Citation(s) in RCA: 115] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2014] [Revised: 11/20/2014] [Indexed: 01/01/2023]
Abstract
Readily available alkenylphenols react with allenes under rhodium catalysis to provide valuable 2,2-disubstituted 2H-chromenes. The whole process, which involves the cleavage of one C-H bond of the alkenyl moiety and the participation of the allene as a one-carbon cycloaddition partner, can be considered a simple, versatile, and atom-economical (5+1) heteroannulation. The reaction tolerates a broad range of substituents both in the alkenylphenol and in the allene, and most probably proceeds through a mechanism involving a rhodium-catalyzed C-C coupling followed by two sequential pericyclic processes.
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Affiliation(s)
- Noelia Casanova
- Centro Singular de Investigación en Química Biolóxica e Materiais Moleculares (CIQUS) and Departamento de Química Orgánica 15782. Universidade de Santiago de Compostela (Spain)
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32
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