1
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Goswami G, Singh B, Wani IA, Mal A, Ghorai MK. A Synthetic Route to Tetrahydro-1 H-azepino[4,3,2- cd]indoles via Ring-Opening Cyclization of Activated Azetidines with 4-Bromoindole: Toward a Vasopressin V2 Receptor Antagonist. J Org Chem 2024; 89:11576-11587. [PMID: 39102588 DOI: 10.1021/acs.joc.4c01270] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/07/2024]
Abstract
A simple one-pot, two-step strategy for the synthesis of tetrahydro-1H-azepino[4,3,2-cd]indoles via Lewis acid-catalyzed SN2-type ring opening of activated azetidines with 4-bromoindole, followed by a Pd-catalyzed intramolecular C-N cyclization reaction, with good to excellent yields is described. Utilizing this protocol, the vasopressin V2 receptor antagonist precursor has been synthesized easily. Enantioenriched tetrahydro-1H-azepino[4,3,2-cd]indoles were obtained by starting from enantiopure azetidine.
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Affiliation(s)
- Gaurav Goswami
- Department of Chemistry, Indian Institute of Technology, Kanpur 208016, India
| | - Bharat Singh
- Department of Chemistry, Indian Institute of Technology, Kanpur 208016, India
| | - Imtiyaz Ahmad Wani
- Department of Chemistry, Indian Institute of Technology, Kanpur 208016, India
| | - Abhijit Mal
- Department of Chemistry, Indian Institute of Technology, Kanpur 208016, India
| | - Manas K Ghorai
- Department of Chemistry, Indian Institute of Technology, Kanpur 208016, India
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2
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Kalnins T, Vitkovska V, Kazak M, Zelencova-Gopejenko D, Ozola M, Narvaiss N, Makrecka-Kuka M, Domračeva I, Kinens A, Gukalova B, Konrad N, Aav R, Bonato F, Lucena-Agell D, Díaz JF, Liepinsh E, Suna E. Development of Potent Microtubule Targeting Agent by Structural Simplification of Natural Diazonamide. J Med Chem 2024; 67:9227-9259. [PMID: 38833507 DOI: 10.1021/acs.jmedchem.4c00388] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/06/2024]
Abstract
The marine metabolite diazonamide A exerts low nanomolar cytotoxicity against a range of tumor cell lines; however, its highly complex molecular architecture undermines the therapeutic potential of the natural product. We demonstrate that truncation of heteroaromatic macrocycle in natural diazonamide A, combined with the replacement of the challenging-to-synthesize tetracyclic hemiaminal subunit by oxindole moiety leads to considerably less complex analogues with improved drug-like properties and nanomolar antiproliferative potency. The structurally simplified macrocycles are accessible in 12 steps from readily available indolin-2-one and tert-leucine with excellent diastereoselectivity (99:1 dr) in the key macrocyclization step. The most potent macrocycle acts as a tubulin assembly inhibitor and exerts similar effects on A2058 cell cycle progression and induction of apoptosis as does marketed microtubule-targeting agent vinorelbine.
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Affiliation(s)
- Toms Kalnins
- Latvian Institute of Organic Synthesis, Aizkraukles 21, Riga LV-1006, Latvia
| | - Viktorija Vitkovska
- Latvian Institute of Organic Synthesis, Aizkraukles 21, Riga LV-1006, Latvia
| | - Mihail Kazak
- Latvian Institute of Organic Synthesis, Aizkraukles 21, Riga LV-1006, Latvia
| | | | - Melita Ozola
- Latvian Institute of Organic Synthesis, Aizkraukles 21, Riga LV-1006, Latvia
| | - Nauris Narvaiss
- Latvian Institute of Organic Synthesis, Aizkraukles 21, Riga LV-1006, Latvia
| | | | - Ilona Domračeva
- Latvian Institute of Organic Synthesis, Aizkraukles 21, Riga LV-1006, Latvia
| | - Artis Kinens
- Latvian Institute of Organic Synthesis, Aizkraukles 21, Riga LV-1006, Latvia
| | - Baiba Gukalova
- Latvian Institute of Organic Synthesis, Aizkraukles 21, Riga LV-1006, Latvia
| | - Nele Konrad
- Department of Chemistry and Biotechnology, Tallinn University of Technology, Akadeemia tee 15, Tallinn, Harju Maakon 12618, Estonia
| | - Riina Aav
- Department of Chemistry and Biotechnology, Tallinn University of Technology, Akadeemia tee 15, Tallinn, Harju Maakon 12618, Estonia
| | - Francesca Bonato
- Unidad BICS, Centro de Investigaciones Biologicas Margarita Salas, Consejo Superior de Investigaciones Cientificas, Ramiro de Maeztu 9, Madrid 28040, Spain
| | - Daniel Lucena-Agell
- Unidad BICS, Centro de Investigaciones Biologicas Margarita Salas, Consejo Superior de Investigaciones Cientificas, Ramiro de Maeztu 9, Madrid 28040, Spain
| | - J Fernando Díaz
- Unidad BICS, Centro de Investigaciones Biologicas Margarita Salas, Consejo Superior de Investigaciones Cientificas, Ramiro de Maeztu 9, Madrid 28040, Spain
| | - Edgars Liepinsh
- Latvian Institute of Organic Synthesis, Aizkraukles 21, Riga LV-1006, Latvia
| | - Edgars Suna
- Latvian Institute of Organic Synthesis, Aizkraukles 21, Riga LV-1006, Latvia
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3
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Li H, Wang N, Zhou Z, Long L, Li X, Qian Y, Qiao L. Domino Michael/Oxa-Michael Reactions of the Unsymmetric Double Michael Acceptor for Access to Bicyclic Furo[2,3- b]pyrrole. J Org Chem 2024; 89:5883-5895. [PMID: 38600052 DOI: 10.1021/acs.joc.4c00161] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/12/2024]
Abstract
By creating an unsymmetric double Michael acceptor 1, we were able to synthesize the nonaromatic-fused bicyclic furo[2,3-b]pyrrole nucleus using a domino Michael/oxa-Michael reaction. Adopting benzoyl acetonitrile 2d (CN as the electron-withdrawing group) as a substrate, we discovered a (DHQ)2AQN-catalyzed method for high diastereo- and enantioselectivity of those products. The reaction path has been determined by isolating the reaction intermediates, and density functional theory calculations support these findings. Beyond providing a synthetic approach, this work illustrated the compounds' possible use in antitumor activity.
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Affiliation(s)
- Hang Li
- Key Laboratory of Organo-Pharmaceutical Chemistry of Jiangxi Province, Gannan Normal University, Ganzhou 341000, P. R. China
| | - Ning Wang
- Key Laboratory of Organo-Pharmaceutical Chemistry of Jiangxi Province, Gannan Normal University, Ganzhou 341000, P. R. China
| | - Zhitin Zhou
- Key Laboratory of Organo-Pharmaceutical Chemistry of Jiangxi Province, Gannan Normal University, Ganzhou 341000, P. R. China
| | - Lipeng Long
- Key Laboratory of Organo-Pharmaceutical Chemistry of Jiangxi Province, Gannan Normal University, Ganzhou 341000, P. R. China
| | - Xun Li
- Key Laboratory of Organo-Pharmaceutical Chemistry of Jiangxi Province, Gannan Normal University, Ganzhou 341000, P. R. China
| | - Yiping Qian
- Key Laboratory of Organo-Pharmaceutical Chemistry of Jiangxi Province, Gannan Normal University, Ganzhou 341000, P. R. China
| | - Liang Qiao
- Key Laboratory of Organo-Pharmaceutical Chemistry of Jiangxi Province, Gannan Normal University, Ganzhou 341000, P. R. China
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4
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Xue F, Yang CJ, Tang T, He Z. Sequential annulation and isomerisation reaction of 3-acylmethylidene oxindoles with Huisgen zwitterions and synthesis of 5-(3-oxindolyl)oxazoles. Org Biomol Chem 2023; 21:8176-8181. [PMID: 37786314 DOI: 10.1039/d3ob01199b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/04/2023]
Abstract
Herein, we report a facile synthesis of 5-(3-oxindolyl)oxazole derivatives via a sequential annulation and isomerisation reaction of 3-acylmethylidene oxindoles with in situ generated Huisgen zwitterions (HZs) from PPh3 and azodicarboxylates. This reaction exhibits good functional group tolerance with 30 examples of structurally diverse products prepared with moderate to good efficiencies (up to 88% yield), thus providing a generally applicable route to the biologically important 5-(3-indolyl)oxazole structural motifs. Key to the success of this sequential one-pot strategy is the utilization of DBU as a base to promote the isomerisation process of the corresponding intermediate annulation products.
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Affiliation(s)
- Feixue Xue
- The State Key Laboratory of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China
- Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin 300071, China.
| | - Chang-Jiang Yang
- Department of Chemistry, School of Sciences, Great Bay University, Dongguan 523000, China
- The Dongguan Key Laboratory for Data Science and Intelligent Medicine, Dongguan 523000, China.
| | - Tong Tang
- The State Key Laboratory of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China
- Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin 300071, China.
| | - Zhengjie He
- The State Key Laboratory of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China
- Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin 300071, China.
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5
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Chen P, Lv MJ, Cheng JK, Xiang SH, Ren XZ, Zhang J, Tan B. Enantioselective construction of triaryl-substituted all-carbon quaternary stereocenters via organocatalytic arylation of oxindoles with azonaphthalenes. Chem Sci 2023; 14:2330-2335. [PMID: 36873834 PMCID: PMC9977417 DOI: 10.1039/d2sc07103g] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2022] [Accepted: 02/04/2023] [Indexed: 02/09/2023] Open
Abstract
Azonaphthalenes have been verified as a class of effective arylation reagents in a variety of asymmetric transformations. Here a highly efficient approach to construct triaryl-substituted all-carbon quaternary stereocenters through chiral phosphoric acid-catalyzed enantioselective arylation of 3-aryl-2-oxindoles with azonaphthalenes is disclosed. This chemistry is scalable and displays excellent functional group tolerance, furnishing a series of 3,3-disubstituted 2-oxindole derivatives in good yields with excellent enantiocontrol. Preliminary mechanistic data suggest that the initially formed direct addition intermediate undergoes intramolecular annulation under acidic reaction conditions.
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Affiliation(s)
- Pengquan Chen
- International Joint Research Center for Molecular Science, College of Chemistry and Environmental Engineering, College of Physics and Optoelectronic Engineering, Shenzhen University Shenzhen 518060 China .,Shenzhen Grubbs Institute, Department of Chemistry, Guangdong Provincial Key Laboratory of Catalysis, Southern University of Science and Technology Shenzhen 518055 China
| | - Mei-Jun Lv
- Shenzhen Grubbs Institute, Department of Chemistry, Guangdong Provincial Key Laboratory of Catalysis, Southern University of Science and Technology Shenzhen 518055 China
| | - Jun Kee Cheng
- Shenzhen Grubbs Institute, Department of Chemistry, Guangdong Provincial Key Laboratory of Catalysis, Southern University of Science and Technology Shenzhen 518055 China
| | - Shao-Hua Xiang
- Shenzhen Grubbs Institute, Department of Chemistry, Guangdong Provincial Key Laboratory of Catalysis, Southern University of Science and Technology Shenzhen 518055 China
| | - Xiang-Zhong Ren
- International Joint Research Center for Molecular Science, College of Chemistry and Environmental Engineering, College of Physics and Optoelectronic Engineering, Shenzhen University Shenzhen 518060 China
| | - Junmin Zhang
- International Joint Research Center for Molecular Science, College of Chemistry and Environmental Engineering, College of Physics and Optoelectronic Engineering, Shenzhen University Shenzhen 518060 China
| | - Bin Tan
- Shenzhen Grubbs Institute, Department of Chemistry, Guangdong Provincial Key Laboratory of Catalysis, Southern University of Science and Technology Shenzhen 518055 China
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6
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Reek JNH, de Bruin B, Pullen S, Mooibroek TJ, Kluwer AM, Caumes X. Transition Metal Catalysis Controlled by Hydrogen Bonding in the Second Coordination Sphere. Chem Rev 2022; 122:12308-12369. [PMID: 35593647 PMCID: PMC9335700 DOI: 10.1021/acs.chemrev.1c00862] [Citation(s) in RCA: 48] [Impact Index Per Article: 24.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Transition metal catalysis is of utmost importance for the development of sustainable processes in academia and industry. The activity and selectivity of metal complexes are typically the result of the interplay between ligand and metal properties. As the ligand can be chemically altered, a large research focus has been on ligand development. More recently, it has been recognized that further control over activity and selectivity can be achieved by using the "second coordination sphere", which can be seen as the region beyond the direct coordination sphere of the metal center. Hydrogen bonds appear to be very useful interactions in this context as they typically have sufficient strength and directionality to exert control of the second coordination sphere, yet hydrogen bonds are typically very dynamic, allowing fast turnover. In this review we have highlighted several key features of hydrogen bonding interactions and have summarized the use of hydrogen bonding to program the second coordination sphere. Such control can be achieved by bridging two ligands that are coordinated to a metal center to effectively lead to supramolecular bidentate ligands. In addition, hydrogen bonding can be used to preorganize a substrate that is coordinated to the metal center. Both strategies lead to catalysts with superior properties in a variety of metal catalyzed transformations, including (asymmetric) hydrogenation, hydroformylation, C-H activation, oxidation, radical-type transformations, and photochemical reactions.
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Affiliation(s)
- Joost N H Reek
- Homogeneous and Supramolecular Catalysis, Van't Hoff Institute for Molecular Sciences, University of Amsterdam, Science Park 904, 1098 XH Amsterdam, The Netherlands.,InCatT B.V., Science Park 904, 1098 XH Amsterdam, The Netherlands
| | - Bas de Bruin
- Homogeneous and Supramolecular Catalysis, Van't Hoff Institute for Molecular Sciences, University of Amsterdam, Science Park 904, 1098 XH Amsterdam, The Netherlands
| | - Sonja Pullen
- Homogeneous and Supramolecular Catalysis, Van't Hoff Institute for Molecular Sciences, University of Amsterdam, Science Park 904, 1098 XH Amsterdam, The Netherlands
| | - Tiddo J Mooibroek
- Homogeneous and Supramolecular Catalysis, Van't Hoff Institute for Molecular Sciences, University of Amsterdam, Science Park 904, 1098 XH Amsterdam, The Netherlands
| | | | - Xavier Caumes
- InCatT B.V., Science Park 904, 1098 XH Amsterdam, The Netherlands
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7
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Wang JJ, Bai R, Yang MQ, Chen ZY, Wang MD, Zhao Q, Lin G, Fu JG, Feng CG. Total Synthesis of (-)-Amathaspiramide A via One-pot Aldol Addition/Transamidification Reaction. Org Chem Front 2022. [DOI: 10.1039/d2qo00032f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The total synthesis of (-)-amathaspiramide A was accomplished through an efficient construction of chiral aza-spirobicyclic core by aldol addition/transamidification cascade. The scope of the efficient construction methodology was investigated. Configuration...
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8
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Khan J, Tyagi A, Yadav N, Mahato R, Hazra CK. Lambert Salt-Initiated Development of Friedel-Crafts Reaction on Isatin to Access Distinct Derivatives of Oxindoles. J Org Chem 2021; 86:17833-17847. [PMID: 34874162 DOI: 10.1021/acs.joc.1c02058] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
Herein, a mild metal-free and efficacious route for the synthesis of biologically important 3-aryl oxindole derivatives is described. Using Lambert salt-initiated hydroarylation of isatin, a diverse array of monoarylated products, symmetrical/unsymmetrical double-arylated products, and deoxygenated hydroarylated products could be synthesized from the single starting substrate in good to excellent yields. A preliminary mechanistic study revealed that the reaction proceeds via a monoarylated product followed by a nucleophilic attack by another electron-rich arene nucleophile under mild conditions. The potential of newly synthesized symmetric/unsymmetric 3,3-disubstituted oxindole, 3-substituted 3-hydroxy oxindoles, 3,3-di(indolyl)indolin-2-ones, and α-aryl oxindoles as valuable building blocks is further illustrated.
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Affiliation(s)
- Jabir Khan
- Department of Chemistry, Indian Institute of Technology Delhi, Hauz Khas, New Delhi 110016, India
| | - Aparna Tyagi
- Department of Chemistry, Indian Institute of Technology Delhi, Hauz Khas, New Delhi 110016, India
| | - Naveen Yadav
- Department of Chemistry, Indian Institute of Technology Delhi, Hauz Khas, New Delhi 110016, India
| | - Rina Mahato
- Department of Chemistry, Indian Institute of Technology Delhi, Hauz Khas, New Delhi 110016, India
| | - Chinmoy K Hazra
- Department of Chemistry, Indian Institute of Technology Delhi, Hauz Khas, New Delhi 110016, India
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9
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Tang S, Vincent G. Natural Products Originated from the Oxidative Coupling of Tyrosine and Tryptophan: Biosynthesis and Bioinspired Synthesis. Chemistry 2021; 27:2612-2622. [PMID: 32820845 DOI: 10.1002/chem.202003459] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2020] [Revised: 08/17/2020] [Indexed: 12/18/2022]
Abstract
The oxidative coupling of tyrosine and tryptophan units is a pivotal step in the total synthesis of some peptide-derived marine and terrestrial natural products, such as the diazonamides, azonazine and tryptorubin A. This Minireview details the biosynthesis and bioinspired synthesis of natural products with such structures. A special focus is put on the challenges of the synthesis of these natural products and the innovative solutions adopted by synthetic chemists.
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Affiliation(s)
- Shanyu Tang
- Institut de Chimie Moléculaire et des Matériaux d'Orsay (ICMMO), Université Paris-Saclay, CNRS, 91405, Orsay, France
| | - Guillaume Vincent
- Institut de Chimie Moléculaire et des Matériaux d'Orsay (ICMMO), Université Paris-Saclay, CNRS, 91405, Orsay, France
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10
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Saridakis I, Kaiser D, Maulide N. Unconventional Macrocyclizations in Natural Product Synthesis. ACS CENTRAL SCIENCE 2020; 6:1869-1889. [PMID: 33274267 PMCID: PMC7706100 DOI: 10.1021/acscentsci.0c00599] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/11/2020] [Indexed: 06/12/2023]
Abstract
Over the past several decades, macrocyclic compounds have emerged as increasingly significant therapeutic candidates in drug discovery. Their pharmacological activity hinges on their rotationally restricted three-dimensional orientation, resulting in a unique conformational preorganization and a high enthalpic gain as a consequence of high-affinity macrocycle-protein binding interactions. Synthetic access to macrocyclic drug candidates is therefore crucial. From a synthetic point of view, the efficiency of macrocyclization events commonly suffers from entropic penalties as well as undesired intermolecular couplings (oligomerization). Although over the past several decades ring-closing metathesis, macrolactonization, or macrolactamization have become strategies of choice, the toolbox of organic synthesis provides a great number of versatile transformations beyond the aforementioned. This Outlook focuses on a selection of examples employing what we term unconventional macrocyclizations toward the synthesis of natural products or analogues.
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Affiliation(s)
- Iakovos Saridakis
- Institute
of Organic Chemistry, University of Vienna, Währinger Strasse 38, 1090 Vienna, Austria
| | - Daniel Kaiser
- Institute
of Organic Chemistry, University of Vienna, Währinger Strasse 38, 1090 Vienna, Austria
| | - Nuno Maulide
- Institute
of Organic Chemistry, University of Vienna, Währinger Strasse 38, 1090 Vienna, Austria
- Research
Platform for Next Generation Macrocycles, Währinger Strasse 38, 1090 Vienna, Austria
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11
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Zhang L, Hu J, Xu R, Pan S, Zeng X, Zhong G. Catalytic Asymmetric Dearomative [3+2] Cyclisation of 1,4‐Quinone with 2,3‐Disubstituted Indoles. Adv Synth Catal 2019. [DOI: 10.1002/adsc.201901035] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Lvye Zhang
- College of Materials, Chemistry and Chemical EngineeringHangzhou Normal University Hangzhou 311121 People's Republic of China
| | - Jinjin Hu
- College of Materials, Chemistry and Chemical EngineeringHangzhou Normal University Hangzhou 311121 People's Republic of China
| | - Ruigang Xu
- College of Materials, Chemistry and Chemical EngineeringHangzhou Normal University Hangzhou 311121 People's Republic of China
| | - Shulei Pan
- College of Materials, Chemistry and Chemical EngineeringHangzhou Normal University Hangzhou 311121 People's Republic of China
| | - Xiaofei Zeng
- College of Materials, Chemistry and Chemical EngineeringHangzhou Normal University Hangzhou 311121 People's Republic of China
| | - Guofu Zhong
- College of Materials, Chemistry and Chemical EngineeringHangzhou Normal University Hangzhou 311121 People's Republic of China
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12
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Sai Manoj Gorantla NVT, Guruprasad Reddy P, Abdul Shakoor SM, Mandal R, Roy S, Mondal KC. Tetranuclear 3 d/4 f Coordination Complexes as Homogeneous Catalysts for Bis(indolyl)methane Syntheses. ChemistrySelect 2019. [DOI: 10.1002/slct.201901215] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
| | - Pulikanti Guruprasad Reddy
- Department of ChemistryIndian Institute of Science Education and Research (IISER) Tirupati Karakambadi Road Tirupati- 517507, Andhra Pradesh India
| | - Sayed Mohmmed Abdul Shakoor
- Department of ChemistryIndian Institute of Science Education and Research (IISER) Tirupati Karakambadi Road Tirupati- 517507, Andhra Pradesh India
| | - Rajkumar Mandal
- Department of ChemistryIndian Institute of Technology-Madras Chennai- 600036 India
| | - Sudipta Roy
- Department of ChemistryIndian Institute of Science Education and Research (IISER) Tirupati Karakambadi Road Tirupati- 517507, Andhra Pradesh India
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13
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Gu YC, Hu RM, Li MM, Xu DZ. Iron-containing ionic liquid as an efficient and recyclable catalyst for the synthesis of C3-substituted indole derivatives. Appl Organomet Chem 2019. [DOI: 10.1002/aoc.4782] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Affiliation(s)
- Ying-Chun Gu
- Tianjin Engineering Technology Center of Chemical Wastewater Source Reduction and Recycling, School of Science; Tianjin Chengjian University; Tianjin 300384 People's Republic of China
| | - Ren-Ming Hu
- National Engineering Research Center of Pesticide (Tianjin), State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry; Nankai University; Tianjin 300071 People's Republic of China
| | - Ming-Ming Li
- National Engineering Research Center of Pesticide (Tianjin), State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry; Nankai University; Tianjin 300071 People's Republic of China
| | - Da-Zhen Xu
- National Engineering Research Center of Pesticide (Tianjin), State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry; Nankai University; Tianjin 300071 People's Republic of China
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14
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Reddy Panyam PK, Ugale B, Gandhi T. Palladium(II)/N-Heterocyclic Carbene Catalyzed One-Pot Sequential α-Arylation/Alkylation: Access to 3,3-Disubstituted Oxindoles. J Org Chem 2018; 83:7622-7632. [PMID: 29882669 DOI: 10.1021/acs.joc.8b00264] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Rationally designed fluorene-based mono- and bimetallic Pd-PEPPSI complexes were synthesized and demonstrated to be effective for the one-pot sequential α-arylation/alkylation of oxindoles. This streamlined approach offers efficient access to functionalized 3,3-disubstituted oxindoles in excellent yields (up to 89%) under mild reaction conditions.
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Affiliation(s)
| | - Bharat Ugale
- Department of Chemistry , Indian Institute of Technology Ropar , Rupnagar , Punjab 140001 , India
| | - Thirumanavelan Gandhi
- Department of Chemistry, School of Advanced Sciences , VIT University , Vellore 632014 , India
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15
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Chen WT, Bao WH, Ying WW, Zhu WM, Liang H, Wei WT. Copper-Promoted Tandem Radical Reaction of 2-Oxindoles with Formamides: Facile Synthesis of Unsymmetrical Urea Derivatives. ASIAN J ORG CHEM 2018. [DOI: 10.1002/ajoc.201800132] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Affiliation(s)
- Wei-Ting Chen
- School of Materials Science and Chemical Engineering; Ningbo University; Ningbo 315211 China
| | - Wen-Hui Bao
- School of Materials Science and Chemical Engineering; Ningbo University; Ningbo 315211 China
| | - Wei-Wei Ying
- School of Materials Science and Chemical Engineering; Ningbo University; Ningbo 315211 China
| | - Wen-Ming Zhu
- School of Materials Science and Chemical Engineering; Ningbo University; Ningbo 315211 China
| | - Hongze Liang
- School of Materials Science and Chemical Engineering; Ningbo University; Ningbo 315211 China
| | - Wen-Ting Wei
- School of Materials Science and Chemical Engineering; Ningbo University; Ningbo 315211 China
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16
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Liu QJ, Zhu J, Song XY, Wang L, Wang SR, Tang Y. Highly Enantioselective [3+2] Annulation of Indoles with Quinones to Access Structurally Diverse Benzofuroindolines. Angew Chem Int Ed Engl 2018; 57:3810-3814. [DOI: 10.1002/anie.201800733] [Citation(s) in RCA: 61] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2018] [Indexed: 11/06/2022]
Affiliation(s)
- Qiong-Jie Liu
- The State Key Laboratory of Organometallic Chemistry; Shanghai Institute of Organic Chemistry; Chinese Academy of Sciences; University of Chinese Academy of Sciences; 345 Lingling Lu Shanghai 200032 China
| | - Jun Zhu
- The State Key Laboratory of Organometallic Chemistry; Shanghai Institute of Organic Chemistry; Chinese Academy of Sciences; University of Chinese Academy of Sciences; 345 Lingling Lu Shanghai 200032 China
| | - Xiang-Yang Song
- The State Key Laboratory of Organometallic Chemistry; Shanghai Institute of Organic Chemistry; Chinese Academy of Sciences; University of Chinese Academy of Sciences; 345 Lingling Lu Shanghai 200032 China
| | - Lijia Wang
- The State Key Laboratory of Organometallic Chemistry; Shanghai Institute of Organic Chemistry; Chinese Academy of Sciences; University of Chinese Academy of Sciences; 345 Lingling Lu Shanghai 200032 China
| | - Sunewang R. Wang
- The State Key Laboratory of Organometallic Chemistry; Shanghai Institute of Organic Chemistry; Chinese Academy of Sciences; University of Chinese Academy of Sciences; 345 Lingling Lu Shanghai 200032 China
| | - Yong Tang
- The State Key Laboratory of Organometallic Chemistry; Shanghai Institute of Organic Chemistry; Chinese Academy of Sciences; University of Chinese Academy of Sciences; 345 Lingling Lu Shanghai 200032 China
- Collaborative Innovation Center of Chemical Science and Engineering; Tianjin 300072 China
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17
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Liu QJ, Zhu J, Song XY, Wang L, Wang SR, Tang Y. Highly Enantioselective [3+2] Annulation of Indoles with Quinones to Access Structurally Diverse Benzofuroindolines. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201800733] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Qiong-Jie Liu
- The State Key Laboratory of Organometallic Chemistry; Shanghai Institute of Organic Chemistry; Chinese Academy of Sciences; University of Chinese Academy of Sciences; 345 Lingling Lu Shanghai 200032 China
| | - Jun Zhu
- The State Key Laboratory of Organometallic Chemistry; Shanghai Institute of Organic Chemistry; Chinese Academy of Sciences; University of Chinese Academy of Sciences; 345 Lingling Lu Shanghai 200032 China
| | - Xiang-Yang Song
- The State Key Laboratory of Organometallic Chemistry; Shanghai Institute of Organic Chemistry; Chinese Academy of Sciences; University of Chinese Academy of Sciences; 345 Lingling Lu Shanghai 200032 China
| | - Lijia Wang
- The State Key Laboratory of Organometallic Chemistry; Shanghai Institute of Organic Chemistry; Chinese Academy of Sciences; University of Chinese Academy of Sciences; 345 Lingling Lu Shanghai 200032 China
| | - Sunewang R. Wang
- The State Key Laboratory of Organometallic Chemistry; Shanghai Institute of Organic Chemistry; Chinese Academy of Sciences; University of Chinese Academy of Sciences; 345 Lingling Lu Shanghai 200032 China
| | - Yong Tang
- The State Key Laboratory of Organometallic Chemistry; Shanghai Institute of Organic Chemistry; Chinese Academy of Sciences; University of Chinese Academy of Sciences; 345 Lingling Lu Shanghai 200032 China
- Collaborative Innovation Center of Chemical Science and Engineering; Tianjin 300072 China
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18
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Zhu WM, Bao WH, Ying WW, Chen WT, Huang YL, Ge GP, Chen GP, Wei WT. TEMPO-Promoted C(sp3
)−H Hydroxylation of 2-Oxindoles at Room Temperature. ASIAN J ORG CHEM 2018. [DOI: 10.1002/ajoc.201700660] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Wen-Ming Zhu
- School of Materials Science and Chemical Engineering; Ningbo University; Ningbo 315211 China
| | - Wen-Hui Bao
- School of Materials Science and Chemical Engineering; Ningbo University; Ningbo 315211 China
| | - Wei-Wei Ying
- School of Materials Science and Chemical Engineering; Ningbo University; Ningbo 315211 China
| | - Wei-Ting Chen
- School of Materials Science and Chemical Engineering; Ningbo University; Ningbo 315211 China
| | - Yi-Ling Huang
- School of Materials Science and Chemical Engineering; Ningbo University; Ningbo 315211 China
| | - Guo-Ping Ge
- School of Materials Science and Chemical Engineering; Ningbo University; Ningbo 315211 China
| | - Gan-Ping Chen
- School of Materials Science and Chemical Engineering; Ningbo University; Ningbo 315211 China
| | - Wen-Ting Wei
- School of Materials Science and Chemical Engineering; Ningbo University; Ningbo 315211 China
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19
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Duan J, Kwong FY. A Palladium-Catalyzed α-Arylation of Oxindoles with Aryl Tosylates. J Org Chem 2017; 82:6468-6473. [PMID: 28539045 DOI: 10.1021/acs.joc.7b00855] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A palladium-catalyzed monoselective C3 arylation of 2-oxindoles with aryl tosylates is described. With the Pd/CM-phos catalyst system, the corresponding 3-arylated oxindoles can be obtained in good to excellent yields (≤97%). The reaction conditions are mild (using 0.5 mol % Pd in general and KF as a base), and functional groups such as methyl ester, NH amido, and enolizable keto moieties are found to be compatible.
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Affiliation(s)
- Jindian Duan
- Department of Applied Biology and Chemical Technology and SKL of Chirosciences, The Hong Kong Polytechnic University , Hung Hom, Kowloon, Hong Kong
| | - Fuk Yee Kwong
- Department of Applied Biology and Chemical Technology and SKL of Chirosciences, The Hong Kong Polytechnic University , Hung Hom, Kowloon, Hong Kong.,Department of Chemistry, The Chinese University of Hong Kong , Shatin, New Territories, Hong Kong
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20
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Tong J, Huang LS, Xu DZ. An efficient Friedel–Crafts alkylation for the synthesis of 3-indolyl-3-hydroxy oxindoles and unsymmetrical 3,3-diaryl oxindoles catalyzed by Dabco-based ionic liquids in water. NEW J CHEM 2017. [DOI: 10.1039/c7nj00174f] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
An efficient, green and reusable catalytic system for controlled 3-indolylation of isatins.
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Affiliation(s)
- Jun Tong
- National Engineering Research Center of Pesticide (Tianjin)
- State Key Laboratory and Institute of Elemento-Organic Chemistry
- College of Chemistry
- Nankai University
- Tianjin 300071
| | - Lu-Shan Huang
- National Engineering Research Center of Pesticide (Tianjin)
- State Key Laboratory and Institute of Elemento-Organic Chemistry
- College of Chemistry
- Nankai University
- Tianjin 300071
| | - Da-Zhen Xu
- National Engineering Research Center of Pesticide (Tianjin)
- State Key Laboratory and Institute of Elemento-Organic Chemistry
- College of Chemistry
- Nankai University
- Tianjin 300071
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21
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Luo W, Yuan X, Lin L, Zhou P, Liu X, Feng X. A N, N'-dioxide/Mg(OTf) 2 complex catalyzed enantioselective α-addition of isocyanides to alkylidene malonates. Chem Sci 2016; 7:4736-4740. [PMID: 30155124 PMCID: PMC6016448 DOI: 10.1039/c6sc00689b] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2016] [Accepted: 04/12/2016] [Indexed: 11/21/2022] Open
Abstract
A simple and efficient catalytic asymmetric α-addition of isocyanides to alkylidene malonates was realized using a chiral N,N′-dioxide/MgII catalyst. A variety of 2-alkyl-5-aminoxazoles were obtained in up to 99% yield and 96% ee, and could be converted to imides and dipeptides.
A highly efficient catalytic asymmetric α-addition of isocyanides to alkylidene malonates was accomplished. The process was based on the utilization of a chiral N,N′-dioxide/MgII catalyst, delivering a variety of 2-alkyl-5-aminooxazoles in up to 99% yield and 96% ee under mild reaction conditions. Besides, a chiral imide and dipeptide could be easily obtained by ring-opening of the oxazole product, both of which are important structural motifs for many biologically active compounds. Based on the experimental investigations and previous work, a possible transition state model was proposed.
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Affiliation(s)
- Weiwei Luo
- Key Laboratory of Green Chemistry & Technology , Ministry of Education , College of Chemistry , Sichuan University , Chengdu 610064 , China . ; ; ; Tel: +86 28 85418249
| | - Xiao Yuan
- Key Laboratory of Green Chemistry & Technology , Ministry of Education , College of Chemistry , Sichuan University , Chengdu 610064 , China . ; ; ; Tel: +86 28 85418249
| | - Lili Lin
- Key Laboratory of Green Chemistry & Technology , Ministry of Education , College of Chemistry , Sichuan University , Chengdu 610064 , China . ; ; ; Tel: +86 28 85418249
| | - Pengfei Zhou
- Key Laboratory of Green Chemistry & Technology , Ministry of Education , College of Chemistry , Sichuan University , Chengdu 610064 , China . ; ; ; Tel: +86 28 85418249
| | - Xiaohua Liu
- Key Laboratory of Green Chemistry & Technology , Ministry of Education , College of Chemistry , Sichuan University , Chengdu 610064 , China . ; ; ; Tel: +86 28 85418249
| | - Xiaoming Feng
- Key Laboratory of Green Chemistry & Technology , Ministry of Education , College of Chemistry , Sichuan University , Chengdu 610064 , China . ; ; ; Tel: +86 28 85418249.,Collaborative Innovation Center of Chemical Science and Engineering , Tianjin , China
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22
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David N, Pasceri R, Kitson RRA, Pradal A, Moody CJ. Formal Total Synthesis of Diazonamide A by Indole Oxidative Rearrangement. Chemistry 2016; 22:10867-76. [DOI: 10.1002/chem.201601605] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2016] [Indexed: 11/09/2022]
Affiliation(s)
- Nadège David
- School of Chemistry; University of Nottingham, University Park; Nottingham NG7 2RD UK
| | - Raffaele Pasceri
- School of Chemistry; University of Nottingham, University Park; Nottingham NG7 2RD UK
| | - Russell R. A. Kitson
- School of Chemistry; University of Nottingham, University Park; Nottingham NG7 2RD UK
| | - Alexandre Pradal
- School of Chemistry; University of Nottingham, University Park; Nottingham NG7 2RD UK
| | - Christopher J. Moody
- School of Chemistry; University of Nottingham, University Park; Nottingham NG7 2RD UK
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23
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One-pot synthesis of spirofluorenyl- and spiroindeno[1,2- b ]indolyl oxindoles via sequential inter- and intramolecular Friedel–Crafts reactions. Tetrahedron Lett 2016. [DOI: 10.1016/j.tetlet.2015.11.080] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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24
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Denizot N, Guillot R, Kouklovsky C, Vincent G. Connecting Tyrosine and Tryptophan Units of Diazonamide A and Azonazine by a Diastereodivergent Arylative Dearomatization. Chemistry 2015; 21:18953-6. [DOI: 10.1002/chem.201503612] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2015] [Indexed: 01/14/2023]
Affiliation(s)
- Natacha Denizot
- Institut de Chimie Moléculaire et des Matériaux d'Orsay (ICMMO), Equipe Méthodologie, Synthèse et Molécules Thérapeutiques, Univ Paris Sud, CNRS, Université Paris‐Saclay, 91405, Orsay (France)
| | - Régis Guillot
- Institut de Chimie Moléculaire et des Matériaux d'Orsay (ICMMO), Equipe Méthodologie, Synthèse et Molécules Thérapeutiques, Univ Paris Sud, CNRS, Université Paris‐Saclay, 91405, Orsay (France)
| | - Cyrille Kouklovsky
- Institut de Chimie Moléculaire et des Matériaux d'Orsay (ICMMO), Equipe Méthodologie, Synthèse et Molécules Thérapeutiques, Univ Paris Sud, CNRS, Université Paris‐Saclay, 91405, Orsay (France)
| | - Guillaume Vincent
- Institut de Chimie Moléculaire et des Matériaux d'Orsay (ICMMO), Equipe Méthodologie, Synthèse et Molécules Thérapeutiques, Univ Paris Sud, CNRS, Université Paris‐Saclay, 91405, Orsay (France)
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25
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Tomás-Mendivil E, Cadierno V, Menéndez MI, López R. Unmasking the Action of Phosphinous Acid Ligands in Nitrile Hydration Reactions Catalyzed by Arene-Ruthenium(II) Complexes. Chemistry 2015; 21:16874-86. [PMID: 26448635 DOI: 10.1002/chem.201503076] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2015] [Indexed: 01/25/2023]
Abstract
The catalytic hydration of benzonitrile and acetonitrile has been studied by employing different arene-ruthenium(II) complexes with phosphinous (PR2OH) and phosphorous acid (P(OR)2OH) ligands as catalysts. Marked differences in activity were found, depending on the nature of both the P-donor and η(6)-coordinated arene ligand. Faster transformations were always observed with the phosphinous acids. DFT computations unveiled the intriguing mechanism of acetonitrile hydration catalyzed by these arene-ruthenium(II) complexes. The process starts with attack on the nitrile carbon atom of the hydroxyl group of the P-donor ligand instead of on a solvent water molecule, as previously suggested. The experimental results presented herein for acetonitrile and benzonitrile hydration catalyzed by different arene-ruthenium(II) complexes could be rationalized in terms of such a mechanism.
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Affiliation(s)
- Eder Tomás-Mendivil
- Laboratorio de Compuestos Organometálicos y, Catálisis (Unidad Asociada al CSIC), Centro de Innovación en Química Avanzada (ORFEO-CINQA) and, Departamento de Química Orgánica e Inorgánica, Universidad de Oviedo, Julián Clavería 8, 33006 Oviedo (Spain)
| | - Victorio Cadierno
- Laboratorio de Compuestos Organometálicos y, Catálisis (Unidad Asociada al CSIC), Centro de Innovación en Química Avanzada (ORFEO-CINQA) and, Departamento de Química Orgánica e Inorgánica, Universidad de Oviedo, Julián Clavería 8, 33006 Oviedo (Spain).
| | - María I Menéndez
- Departamento de Química Física y Analítica, Universidad de Oviedo, Julián Clavería 8, 33006 Oviedo (Spain)
| | - Ramón López
- Departamento de Química Física y Analítica, Universidad de Oviedo, Julián Clavería 8, 33006 Oviedo (Spain).
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26
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Synthetic Applications of the Parkins Nitrile Hydration Catalyst [PtH{(PMe2O)2H}(PMe2OH)]: A Review. APPLIED SCIENCES-BASEL 2015. [DOI: 10.3390/app5030380] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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27
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Denizot N, Tomakinian T, Beaud R, Kouklovsky C, Vincent G. Synthesis of 3-arylated indolines from dearomatization of indoles. Tetrahedron Lett 2015. [DOI: 10.1016/j.tetlet.2015.05.078] [Citation(s) in RCA: 63] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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28
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Peris G, Vedejs E. Enantiocontrolled Synthesis of a Tetracyclic Aminal Corresponding to the Core Subunit of Diazonamide A. J Org Chem 2015; 80:3050-7. [DOI: 10.1021/jo502939a] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Gorka Peris
- Department
of Chemistry, University of Michigan, Ann Arbor, Michigan 48109, United States
| | - Edwin Vedejs
- Department
of Chemistry, University of Michigan, Ann Arbor, Michigan 48109, United States
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29
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Mutule I, Joo B, Medne Z, Kalnins T, Vedejs E, Suna E. Stereoselective Synthesis of the Diazonamide A Macrocyclic Core. J Org Chem 2015; 80:3058-66. [DOI: 10.1021/jo5029419] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Ilga Mutule
- Latvian Institute of Organic Synthesis, Aizkraukles 21, LV-1006, Riga, Latvia
| | - Beomjun Joo
- Department
of Chemistry, University of Michigan, Ann Arbor, Michigan 48109, United States
| | - Zane Medne
- Latvian Institute of Organic Synthesis, Aizkraukles 21, LV-1006, Riga, Latvia
| | - Toms Kalnins
- Latvian Institute of Organic Synthesis, Aizkraukles 21, LV-1006, Riga, Latvia
| | - Edwin Vedejs
- Department
of Chemistry, University of Michigan, Ann Arbor, Michigan 48109, United States
| | - Edgars Suna
- Latvian Institute of Organic Synthesis, Aizkraukles 21, LV-1006, Riga, Latvia
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30
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Ding H, DeRoy PL, Perreault C, Larivée A, Siddiqui A, Caldwell CG, Harran S, Harran PG. Electrolytic Macrocyclizations: Scalable Synthesis of a Diazonamide-Based Drug Development Candidate. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201411663] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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31
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Ding H, DeRoy PL, Perreault C, Larivée A, Siddiqui A, Caldwell CG, Harran S, Harran PG. Electrolytic macrocyclizations: scalable synthesis of a diazonamide-based drug development candidate. Angew Chem Int Ed Engl 2015; 54:4818-22. [PMID: 25729008 DOI: 10.1002/anie.201411663] [Citation(s) in RCA: 107] [Impact Index Per Article: 11.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2014] [Indexed: 11/11/2022]
Abstract
An electrochemical method to synthesize the core macrolactam of diazonamides is described. Large ring-forming dehydrogenation is initiated by anodic oxidation at a graphite surface. The reaction requires no tailoring of the substrate and occurs at ambient temperature in aqueous DMF in an undivided cell open to air. This unique chemistry has enabled a concise, scalable preparation of DZ-2384; a refined analog of diazonamide A slated for clinical development as a cancer therapeutic.
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Affiliation(s)
- Hui Ding
- Department of Chemistry and Biochemistry, University of California, Los Angeles, 607 Charles E. Young Drive East, Los Angeles, California 90095-1569 (USA)
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32
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Du Z, Xing Y, Lu P, Wang Y. Copper-Catalyzed Cascade Double C3-Indolations of 3-Diazoindolin-2-imines with Indoles: Convenient Access to 3,3-Diaryl-2-iminoindoles. Org Lett 2015; 17:1192-5. [DOI: 10.1021/acs.orglett.5b00089] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Affiliation(s)
- Zao Du
- Department
of Chemistry, Zhejiang University, Hangzhou 310027, P. R. China
| | - Yanpeng Xing
- Department
of Chemistry, Zhejiang University, Hangzhou 310027, P. R. China
| | - Ping Lu
- Department
of Chemistry, Zhejiang University, Hangzhou 310027, P. R. China
| | - Yanguang Wang
- Department
of Chemistry, Zhejiang University, Hangzhou 310027, P. R. China
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33
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Tomás-Mendivil E, Menéndez-Rodríguez L, Francos J, Crochet P, Cadierno V. Investigation of binap-based hydroxyphosphine arene–ruthenium(ii) complexes as catalysts for nitrile hydration. RSC Adv 2014. [DOI: 10.1039/c4ra12013b] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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34
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García-Álvarez R, Francos J, Tomás-Mendivil E, Crochet P, Cadierno V. Metal-catalyzed nitrile hydration reactions: The specific contribution of ruthenium. J Organomet Chem 2014. [DOI: 10.1016/j.jorganchem.2013.11.042] [Citation(s) in RCA: 57] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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35
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Denizot N, Pouilhès A, Cucca M, Beaud R, Guillot R, Kouklovsky C, Vincent G. Bioinspired Direct Access to Benzofuroindolines by Oxidative [3 + 2] Annulation of Phenols and Indoles. Org Lett 2014; 16:5752-5. [DOI: 10.1021/ol502820p] [Citation(s) in RCA: 63] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Affiliation(s)
- Natacha Denizot
- Univ Paris Sud and CNRS, Institut de Chimie Moléculaire et des Matériaux d’Orsay (ICMMO), UMR8182, Equipe Méthodologie - Synthèse & Molécules Thérapeutiques (MS&MT), Bat. 410, 91405, Orsay, France
| | - Annie Pouilhès
- Univ Paris Sud and CNRS, Institut de Chimie Moléculaire et des Matériaux d’Orsay (ICMMO), UMR8182, Equipe Méthodologie - Synthèse & Molécules Thérapeutiques (MS&MT), Bat. 410, 91405, Orsay, France
| | - Mélissa Cucca
- Univ Paris Sud and CNRS, Institut de Chimie Moléculaire et des Matériaux d’Orsay (ICMMO), UMR8182, Equipe Méthodologie - Synthèse & Molécules Thérapeutiques (MS&MT), Bat. 410, 91405, Orsay, France
| | - Rodolphe Beaud
- Univ Paris Sud and CNRS, Institut de Chimie Moléculaire et des Matériaux d’Orsay (ICMMO), UMR8182, Equipe Méthodologie - Synthèse & Molécules Thérapeutiques (MS&MT), Bat. 410, 91405, Orsay, France
| | - Régis Guillot
- Univ Paris Sud and CNRS, Institut de Chimie Moléculaire et des Matériaux d’Orsay (ICMMO), UMR8182, Equipe Méthodologie - Synthèse & Molécules Thérapeutiques (MS&MT), Bat. 410, 91405, Orsay, France
| | - Cyrille Kouklovsky
- Univ Paris Sud and CNRS, Institut de Chimie Moléculaire et des Matériaux d’Orsay (ICMMO), UMR8182, Equipe Méthodologie - Synthèse & Molécules Thérapeutiques (MS&MT), Bat. 410, 91405, Orsay, France
| | - Guillaume Vincent
- Univ Paris Sud and CNRS, Institut de Chimie Moléculaire et des Matériaux d’Orsay (ICMMO), UMR8182, Equipe Méthodologie - Synthèse & Molécules Thérapeutiques (MS&MT), Bat. 410, 91405, Orsay, France
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36
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Tomakinian T, Guillot R, Kouklovsky C, Vincent G. Direct oxidative coupling of N-acetyl indoles and phenols for the synthesis of benzofuroindolines related to phalarine. Angew Chem Int Ed Engl 2014; 53:11881-5. [PMID: 25208884 DOI: 10.1002/anie.201404055] [Citation(s) in RCA: 104] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2014] [Revised: 06/25/2014] [Indexed: 01/18/2023]
Abstract
Inspired by the biogenetic synthesis of benzofuroindoline-containing natural products, we designed an oxidative coupling between phenol and N-acetyl indoles. This straightforward and direct radical process, mediated by 2,3-dichloro-5,6-dicyano-1,4-benzoquinone and FeCl3 allowed the regioselective synthesis of benzofuro[3,2-b]indolines, whose structure is found in the natural product phalarine.
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Affiliation(s)
- Terry Tomakinian
- Univ. Paris Sud and CNRS, Institut de Chimie Moléculaire et des Matériaux d'Orsay (ICMMO), Equipe Méthodologie, Synthèse et Molécules Thérapeutiques, Bat. 410, 15 rue G. Clemenceau, 91405 Orsay (France) http://www.icmmo.u-psud.fr/Labos/LPSN/cv/guillaume.php
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37
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Tomakinian T, Guillot R, Kouklovsky C, Vincent G. Direct Oxidative Coupling ofN-Acetyl Indoles and Phenols for the Synthesis of Benzofuroindolines Related to Phalarine. Angew Chem Int Ed Engl 2014. [DOI: 10.1002/ange.201404055] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
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38
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Intramolecular Larock indole synthesis for the preparation of tricyclic indoles and its application in the synthesis of tetrahydropyrroloquinoline and fargesine. Tetrahedron 2014. [DOI: 10.1016/j.tet.2014.05.108] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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39
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Liu YC, Zhang R, Wu QY, Chen Q, Yang GF. Recent Developments in the Synthesis and Applications of Isatins. ORG PREP PROCED INT 2014. [DOI: 10.1080/00304948.2014.922378] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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40
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Szostak M, Spain M, Procter DJ. Ketyl-Type Radicals from Cyclic and Acyclic Esters are Stabilized by SmI2(H2O)n: The Role of SmI2(H2O)n in Post-Electron Transfer Steps. J Am Chem Soc 2014; 136:8459-66. [DOI: 10.1021/ja503494b] [Citation(s) in RCA: 61] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Affiliation(s)
- Michal Szostak
- School of Chemistry, University of Manchester, Oxford
Road, Manchester, M13 9PL United Kingdom
| | - Malcolm Spain
- School of Chemistry, University of Manchester, Oxford
Road, Manchester, M13 9PL United Kingdom
| | - David J. Procter
- School of Chemistry, University of Manchester, Oxford
Road, Manchester, M13 9PL United Kingdom
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41
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Beaud R, Guillot R, Kouklovsky C, Vincent G. Regioselective hydroarylation reactions of C3 electrophilic N-acetylindoles activated by FeCl3: an entry to 3-(hetero)arylindolines. Chemistry 2014; 20:7492-500. [PMID: 24828464 DOI: 10.1002/chem.201400284] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2014] [Indexed: 11/06/2022]
Abstract
A method for the direct and rare umpolung of the 3 position of indoles is reported. The activation of N-acetylindole with iron(III) chloride allows the C-H addition of aromatic and heteroaromatic substrates to the C2=C3 double bond of the indole nucleus to generate a quaternary center at C3 and leads regioselectively to 3-arylindolines. Optimization, scope (50 examples), practicability (gram scale, air atmosphere, room temperature), and mechanistic insights of this process are presented. Synthetic transformations of the indoline products into drug-like compounds are also described.
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Affiliation(s)
- Rodolphe Beaud
- Institut de Chimie Moléculaire et des Matériaux d'Orsay (ICMMO), Equipe Méthodologie, Synthèse et Molécules Thérapeutiques, Univ Paris Sud and CNRS, 15 rue Georges Clemenceau, Bat 410, 91406, Orsay (France), Fax: (+33) 1-69-15-46-79
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Total synthesis of ent-(−)-azonazine using a biomimetic direct oxidative cyclization and structural reassignment of natural product. Tetrahedron 2014. [DOI: 10.1016/j.tet.2014.03.061] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Abstract
Abstract
The synthesis of urea in 1828 set in motion the discipline of organic synthesis in general and of total synthesis in particular, the art and science of synthesizing natural products, the molecules of living nature. Early endeavors in total synthesis had as their main objective the proof of structure of the target molecule. Later on, the primary goal became the demonstration of the power of synthesis to construct complex molecules through appropriately devised strategies, making the endeavor an achievement whose value was measured by its elegance and efficiency. While these objectives continue to be important, contemporary endeavors in total synthesis are increasingly focused on practical aspects, including method development, efficiency, and biological and medical relevance. In this article, the emergence and evolution of total synthesis to its present state is traced, selected total syntheses from the author's laboratories are highlighted, and projections for the future of the field are discussed.
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Szostak M, Spain M, Procter DJ. Determination of the Effective Redox Potentials of SmI2, SmBr2, SmCl2, and their Complexes with Water by Reduction of Aromatic Hydrocarbons. Reduction of Anthracene and Stilbene by Samarium(II) Iodide–Water Complex. J Org Chem 2014; 79:2522-37. [DOI: 10.1021/jo4028243] [Citation(s) in RCA: 69] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Affiliation(s)
- Michal Szostak
- School of Chemistry, University of Manchester, Oxford
Road, Manchester M13 9PL, United Kingdom
| | - Malcolm Spain
- School of Chemistry, University of Manchester, Oxford
Road, Manchester M13 9PL, United Kingdom
| | - David J. Procter
- School of Chemistry, University of Manchester, Oxford
Road, Manchester M13 9PL, United Kingdom
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Siodłak D, Staś M, Broda MA, Bujak M, Lis T. Conformational properties of oxazole-amino acids: effect of the intramolecular N-H···N hydrogen bond. J Phys Chem B 2014; 118:2340-50. [PMID: 24528177 DOI: 10.1021/jp4121673] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Oxazole ring occurs in numerous natural peptides, but conformational properties of the amino acid residue containing the oxazole ring in place of the C-terminal amide bond are poorly recognized. A series of model compounds constituted by the oxazole-amino acids occurring in nature, that is, oxazole-alanine (L-Ala-Ozl), oxazole-dehydroalanine (ΔAla-Ozl), and oxazole-dehydrobutyrine ((Z)-ΔAbu-Ozl), was investigated using theoretical calculations supported by FTIR and NMR spectra and single-crystal X-ray diffraction. It was found that the main feature of the studied oxazole-amino acids is the stable conformation β2 with the torsion angles φ and ψ of -150°, -10° for L-Ala-Ozl, -180°, 0° for ΔAla-Ozl, and -120°, 0° for (Z)-ΔAbu-Ozl, respectively. The conformation β2 is stabilized by the intramolecular N-H···N hydrogen bond and predominates in the low polar environment. In the case of the oxazole-dehydroamino acids, the π-electron conjugation that is spread on the oxazole ring and C(α)═C(β) double bond is an additional stabilizing interaction. The tendency to adopt the conformation β2 clearly decreases with increasing the polarity of environment, but still the oxazole-dehydroamino acids are considered to be more rigid and resistant to conformational changes.
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Affiliation(s)
- Dawid Siodłak
- Faculty of Chemistry, University of Opole , Oleska 48, 45-052 Opole, Poland
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46
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Zhao JC, Yu SM, Liu Y, Yao ZJ. Biomimetic synthesis of ent-(-)-azonazine and stereochemical reassignment of natural product. Org Lett 2013; 15:4300-3. [PMID: 23931155 DOI: 10.1021/ol4015706] [Citation(s) in RCA: 60] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The first total synthesis of ent-(-)-azonazine has been accomplished using a hypervalent iodine-mediated biomimetic oxidative cyclization to construct the highly strained core. Based on the results from the completed synthesis, both the relative and absolute configurations of natural (+)-azonazine were revised.
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Affiliation(s)
- Ji-Chen Zhao
- State Key Laboratory of Bioorganic and Natural Products Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, China
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47
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Shan D, Gao Y, Jia Y. Intramolecular Larock Indole Synthesis: Preparation of 3,4-Fused Tricyclic Indoles and Total Synthesis of Fargesine. Angew Chem Int Ed Engl 2013; 52:4902-5. [DOI: 10.1002/anie.201300571] [Citation(s) in RCA: 124] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2013] [Indexed: 11/10/2022]
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48
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Shan D, Gao Y, Jia Y. Intramolecular Larock Indole Synthesis: Preparation of 3,4-Fused Tricyclic Indoles and Total Synthesis of Fargesine. Angew Chem Int Ed Engl 2013. [DOI: 10.1002/ange.201300571] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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49
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Szostak M, Spain M, Procter DJ. Recent advances in the chemoselective reduction of functional groups mediated by samarium(ii) iodide: a single electron transfer approach. Chem Soc Rev 2013; 42:9155-83. [DOI: 10.1039/c3cs60223k] [Citation(s) in RCA: 164] [Impact Index Per Article: 14.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
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50
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Ishikura M, Abe T, Choshi T, Hibino S. Simple indole alkaloids and those with a non-rearranged monoterpenoid unit. Nat Prod Rep 2013; 30:694-752. [DOI: 10.1039/c3np20118j] [Citation(s) in RCA: 269] [Impact Index Per Article: 24.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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