1
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Yescas-Galicia D, Restrepo-Osorio RA, García-González AN, Hernández-Benítez RI, Espinoza-Hicks JC, Escalante CH, Barrera E, Santoyo BM, Delgado F, Tamariz J. Divergent Pd-catalyzed Functionalization of 4-Oxazolin-2-ones and 4-Methylene-2-oxazolidinones and Synthesis of Heterocyclic-Fused Indoles. J Org Chem 2022; 87:13034-13052. [PMID: 36153994 DOI: 10.1021/acs.joc.2c01563] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Palladium-catalyzed functionalization was presently performed on two building blocks: 4-oxazolin-2-ones and 4-methylene-2-oxazolidinones. Direct Heck arylation of 4-oxazolin-2-ones led to a series of 5-aryl-4-oxazolin-2-ones, including analogues with N-chiral auxiliary, in an almost quantitative yield. The Pd(II)-catalyzed homocoupling reaction of 4-oxazolin-2-ones provided novel heterocyclic across-ring dienes. Meanwhile, the intramolecular cross-coupling of N-aryl-4-methylene-2-oxazolidinones furnished a series of oxazolo[3,4-a]indol-3-ones. Further functionalization of 4-methylene-2-oxazolidinones afforded substituted indoles and heterocyclic-fused indoles with aryl, bromo, carbinol, formyl, and vinyl groups. A computational study was carried out to account for the behavior of the formylated derivatives. The currently developed methodology was applied to a new formal total synthesis of ellipticine.
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Affiliation(s)
- Daniel Yescas-Galicia
- Departamento de Química Orgánica, Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional, Prolongación de Carpio y Plan de Ayala S/N, 11340 Mexico City, Mexico
| | - Rodrigo A Restrepo-Osorio
- Departamento de Química Orgánica, Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional, Prolongación de Carpio y Plan de Ayala S/N, 11340 Mexico City, Mexico
| | - Ailyn N García-González
- Departamento de Química Orgánica, Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional, Prolongación de Carpio y Plan de Ayala S/N, 11340 Mexico City, Mexico
| | - Roberto I Hernández-Benítez
- Departamento de Química Orgánica, Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional, Prolongación de Carpio y Plan de Ayala S/N, 11340 Mexico City, Mexico
| | - José C Espinoza-Hicks
- Departamento de Química Orgánica, Facultad de Ciencias Químicas, Universidad Autónoma de Chihuahua, Circuito Universitario S/N, 31000 Chihuahua, Chih., Mexico
| | - Carlos H Escalante
- Departamento de Química Orgánica, Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional, Prolongación de Carpio y Plan de Ayala S/N, 11340 Mexico City, Mexico
| | - Edson Barrera
- Departamento de Química Orgánica, Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional, Prolongación de Carpio y Plan de Ayala S/N, 11340 Mexico City, Mexico
| | - Blanca M Santoyo
- Departamento de Química Orgánica, Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional, Prolongación de Carpio y Plan de Ayala S/N, 11340 Mexico City, Mexico
| | - Francisco Delgado
- Departamento de Química Orgánica, Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional, Prolongación de Carpio y Plan de Ayala S/N, 11340 Mexico City, Mexico
| | - Joaquín Tamariz
- Departamento de Química Orgánica, Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional, Prolongación de Carpio y Plan de Ayala S/N, 11340 Mexico City, Mexico
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2
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Elshaier YA, Nemr MTM, Al Refaey M, Fadaly WAA, Barakat A. Chemistry of 2-Vinylindoles: Synthesis and Applications. NEW J CHEM 2022. [DOI: 10.1039/d2nj00460g] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
As a class of compounds, 2-vinylindoles have demonstrated a wide range of biological properties. Due to the general interest in these synthons, new divergent protocols of chemical synthesis have been...
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3
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Lauta NR, Williams RE, Smith DT, Kumirov VK, Njardarson JT. Oxidative Route to Indoles via Intramolecular Amino-Hydroxylation of o-Allenyl Anilines. J Org Chem 2021; 86:10713-10723. [PMID: 34282910 DOI: 10.1021/acs.joc.1c01379] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A new intramolecular oxidative amino-hydroxylation of o-allenyl anilines is reported. Treatment of carbamate-protected anilines with lead(IV) carboxylates in dichloromethane at room temperature results in facile tandem C-N (allene cyclization) and C-O bond formation (carboxylate trapping) to form indole products. Detailed reaction scope, mechanistic and kinetic studies suggest a reaction pathway involving an initial Wessely dearomatization step followed by cyclization and rearomatization.
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Affiliation(s)
- Nicholas R Lauta
- Department of Chemistry and Biochemistry, University of Arizona, Tucson, Arizona 85721, United States
| | - Ryan E Williams
- Department of Chemistry and Biochemistry, University of Arizona, Tucson, Arizona 85721, United States
| | - David T Smith
- Department of Chemistry and Biochemistry, University of Arizona, Tucson, Arizona 85721, United States
| | - Vlad K Kumirov
- Department of Chemistry and Biochemistry, University of Arizona, Tucson, Arizona 85721, United States
| | - Jon T Njardarson
- Department of Chemistry and Biochemistry, University of Arizona, Tucson, Arizona 85721, United States
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4
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Alterman JL, Vang DX, Stroud MR, Halverson LJ, Kraus GA. Ozonolysis of Alkynes-A Flexible Route to Alpha-Diketones: Synthesis of AI-2. Org Lett 2020; 22:7424-7426. [PMID: 32866392 DOI: 10.1021/acs.orglett.0c02182] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
A mild procedure for the low-temperature conversion of alkynes to diketones has been developed and employed in the synthesis of AI-2.
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5
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Gromova MA, Kharitonov YV, Bagryanskaya IY, Shults EE. Efficient Synthesis of the N-(buta-2,3-dienyl)carboxamide of Isopimaric Acid and the Potential of This Compound towards Heterocyclic Derivatives of Diterpenoids. ChemistryOpen 2018; 7:890-901. [PMID: 30460170 PMCID: PMC6234760 DOI: 10.1002/open.201800205] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2018] [Indexed: 01/09/2023] Open
Abstract
The N‐(2,3‐butadienyl)carboxamide of isopimaric acid, that is, compound 3, was prepared through a two‐step synthetic procedure starting from the natural diterpene isopimaric acid. The Pd‐catalyzed cross‐coupling and subsequent cyclization of terpenoid allene 3 with several aryl iodides and aryl bromides gave access to optically active diterpenoid–oxazoline derivatives in good to excellent yields. The functional group tolerance in the aryl iodides was demonstrated by several examples, including substrates with additional N‐tert‐butoxycarbonyl‐protected amino, hydroxy, and carboxy substituents in the ortho position. The cross‐coupling–cyclization reaction of those compounds with allene 3 proceeded selectively with the formation of cyclization products on the substituent in the aromatic ring. This transformation opens a potential route to the synthesis of hybrid compounds containing a tricyclic diterpenoid and several heterocycles.
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Affiliation(s)
- Marya A Gromova
- Novosibirsk Institute of Organic Chemistry SB RAS Lavrentjev Avenue 9 630090 Novosibirsk Russia
| | - Yurii V Kharitonov
- Novosibirsk Institute of Organic Chemistry SB RAS Lavrentjev Avenue 9 630090 Novosibirsk Russia
| | - Irina Yu Bagryanskaya
- Department of Physical Chemistry Novosibirsk Institute of Organic Chemistry SB RAS Lavrentjev Avenue 9 630090 Novosibirsk Russia.,Novosibirsk State University Pirogova St. 2 630090 Novosibirsk Russia
| | - Elvira E Shults
- Novosibirsk Institute of Organic Chemistry SB RAS Lavrentjev Avenue 9 630090 Novosibirsk Russia.,Novosibirsk State University Pirogova St. 2 630090 Novosibirsk Russia
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6
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Wani IA, Bhattacharyya A, Sayyad M, Ghorai MK. Temperature-modulated diastereoselective transformations of 2-vinylindoles to tetrahydrocarbazoles and tetrahydrocycloheptadiindoles. Org Biomol Chem 2018; 16:2910-2922. [DOI: 10.1039/c8ob00228b] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The Fe(OTf)3-catalyzed dimerization of 2-vinylindolesviadiastereoselective [4 + 2] or [4 + 3] cyclization gives rise to tetrahydrocarbazoles at low temperature or tetrahydrocycloheptadiindoles at high temperature.
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Affiliation(s)
| | | | | | - Manas K. Ghorai
- Department of Chemistry
- Indian Institute of Technology Kanpur
- India
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7
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Noland WE, Herzig RJ, Kumar HV, Narina VS, Elkin PK, Valverde KI, Kim BL. Diels-Alder reactions of fused 5-, 6- and 7-membered ring 2-vinylindoles: Synthesis of annulated tetrahydrocarbazoles. Tetrahedron 2017. [DOI: 10.1016/j.tet.2017.09.025] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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8
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Williams DR, Bawel SA, Schaugaard RN. A Stereoselective Michael—Mannich Annelation Strategy for the Construction of Novel Tetrahydrocarbazoles. Org Lett 2017; 19:5098-5101. [DOI: 10.1021/acs.orglett.7b02323] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- David R. Williams
- Department of Chemistry, Indiana University, 800 East Kirkwood Avenue, Bloomington, Indiana 47405-7102, United States
| | - Seth A. Bawel
- Department of Chemistry, Indiana University, 800 East Kirkwood Avenue, Bloomington, Indiana 47405-7102, United States
| | - Richard N. Schaugaard
- Department of Chemistry, Indiana University, 800 East Kirkwood Avenue, Bloomington, Indiana 47405-7102, United States
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9
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Mukai C. Creation of Novel Cyclization Methods Using sp-Hybridized Carbon Units and Syntheses of Bioactive Compounds. Chem Pharm Bull (Tokyo) 2017; 65:511-523. [PMID: 28566644 DOI: 10.1248/cpb.c17-00088] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Some recent results on the development of new and reliable procedures for the construction of diverse ring systems based on the chemistry of sp-hybridized species, especially allene functionality, are described. This review includes: (i) synthesis of the multi-cyclic skeletons by combination of the π-component of allene with suitable other π-components such as alkyne, alkene, or additional allene under Rh-catalyzed conditions; (ii) synthesis of heterocycles as well as carbocycles by reaction of the sp-hybridized center of allene with some nucleophiles in an endo-mode manner; and (iii) total syntheses of natural products and related compounds from the sp-hybridized starting materials.
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Affiliation(s)
- Chisato Mukai
- Division of Pharmaceutical Sciences, Graduate School of Medical Sciences, Kanazawa University
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10
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Cao B, Simaan M, Marek I, Wei Y, Shi M. Palladium-catalyzed oxidative cyclization of aniline-tethered alkylidenecyclopropanes with O2: a facile protocol to selectively synthesize 2- and 3-vinylindoles. Chem Commun (Camb) 2017; 53:216-219. [DOI: 10.1039/c6cc08731k] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A facile and versatile palladium catalyzed oxidative cyclization of aniline-tethered alkylidenecyclopropanes with O2 to selectively construct important synthetic intermediates 2- and 3-vinylindoles in moderate to good yields has been developed.
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Affiliation(s)
- Bo Cao
- Key Laboratory for Advanced Materials and Institute of Fine Chemicals
- School of Chemistry & Molecular Engineering
- East China University of Science and Technology
- Shanghai 200237
- China
| | - Marwan Simaan
- The Mallat Family Laboratory of Organic Chemistry
- Schulich Faculty of Chemistry and Lise Meitner-Minerva Center for Computational Quantum Chemistry
- Technion-Israel Institute of Technology
- Technion City
- Israel
| | - Ilan Marek
- The Mallat Family Laboratory of Organic Chemistry
- Schulich Faculty of Chemistry and Lise Meitner-Minerva Center for Computational Quantum Chemistry
- Technion-Israel Institute of Technology
- Technion City
- Israel
| | - Yin Wei
- State Key Laboratory of Organometallic Chemistry
- University of Chinese Academy of Sciences
- Shanghai Institute of Organic Chemistry
- Chinese Academy of Sciences
- Shanghai 200032
| | - Min Shi
- Key Laboratory for Advanced Materials and Institute of Fine Chemicals
- School of Chemistry & Molecular Engineering
- East China University of Science and Technology
- Shanghai 200237
- China
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11
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Li Y, Tur F, Nielsen RP, Jiang H, Jensen F, Jørgensen KA. Enantioselective Formal [4+2] Cycloadditions to 3-Nitroindoles by Trienamine Catalysis: Synthesis of Chiral Dihydrocarbazoles. Angew Chem Int Ed Engl 2015; 55:1020-4. [PMID: 26636665 DOI: 10.1002/anie.201509693] [Citation(s) in RCA: 83] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2015] [Revised: 11/16/2015] [Indexed: 01/03/2023]
Abstract
The first enantioselective formal [4+2] cycloadditions of 3-nitroindoles are presented. By using 3-nitroindoles in combination with an organocatalyst, chiral dihydrocarbazole scaffolds are formed in moderate to good yields (up to 87%) and enantioselectivities (up to 97% ee). The reaction was extended to include enantioselective [4+2] cycloadditions of 3-nitrobenzothiophene. The reaction proceeds through a [4+2] cycloaddition/elimination cascade under mild reaction conditions. Furthermore, a diastereoselective reduction of an enantioenriched cycloadduct is presented. The mechanism of the reaction is discussed based on experimental and computational studies.
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Affiliation(s)
- Yang Li
- Department of Chemistry, Aarhus University, 8000, Aarhus C, Denmark
| | - Fernando Tur
- Department of Chemistry, Aarhus University, 8000, Aarhus C, Denmark
| | | | - Hao Jiang
- Department of Chemistry, Aarhus University, 8000, Aarhus C, Denmark
| | - Frank Jensen
- Department of Chemistry, Aarhus University, 8000, Aarhus C, Denmark
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12
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Li Y, Tur F, Nielsen RP, Jiang H, Jensen F, Jørgensen KA. Enantioselective Formal [4+2] Cycloadditions to 3-Nitroindoles by Trienamine Catalysis: Synthesis of Chiral Dihydrocarbazoles. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201509693] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Yang Li
- Department of Chemistry; Aarhus University; 8000 Aarhus C Denmark
| | - Fernando Tur
- Department of Chemistry; Aarhus University; 8000 Aarhus C Denmark
| | | | - Hao Jiang
- Department of Chemistry; Aarhus University; 8000 Aarhus C Denmark
| | - Frank Jensen
- Department of Chemistry; Aarhus University; 8000 Aarhus C Denmark
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13
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Sirotkina J, Grigorjeva L, Jirgensons A. Synthesis of Alkynyl-Glycinols by Lewis Acid Catalyzed Propargylic Substitution of Bis-Imidates. European J Org Chem 2015. [DOI: 10.1002/ejoc.201500937] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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14
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Jiang L, Xie X, Zu L. tert-Butyl hypochlorite mediated diastereoselective oxidative coupling: access to 1-functionalized tetrahydrocarbazoles. RSC Adv 2015. [DOI: 10.1039/c4ra14092c] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A mild and operationally simple protocol for the diastereoselective C–H functionalization of the 1-position of tetrahydrocarbazoles is reported.
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Affiliation(s)
- Long Jiang
- Department of Pharmacology and Pharmaceutical Sciences
- School of Medicine
- Tsinghua University
- Beijing
- 100084 China
| | - Xiaoni Xie
- Department of Pharmacology and Pharmaceutical Sciences
- School of Medicine
- Tsinghua University
- Beijing
- 100084 China
| | - Liansuo Zu
- Department of Pharmacology and Pharmaceutical Sciences
- School of Medicine
- Tsinghua University
- Beijing
- 100084 China
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15
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16
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Li G, Sun W, Li J, Jia F, Hong L, Wang R. Organocatalytic enantioselective formal arylation of azlactones using quinones as the aromatic partner. Chem Commun (Camb) 2015; 51:11280-2. [DOI: 10.1039/c5cc03677a] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Catalytic enantioselective formal arylation of azlactones using quinones as the aromatic partner was developed.
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Affiliation(s)
- Guofeng Li
- School of Pharmaceutical Sciences
- Sun Yat-sen University
- Guangzhou
- China
- Key Laboratory of Preclinical Study for New Drugs of Gansu Province
| | - Wangsheng Sun
- Key Laboratory of Preclinical Study for New Drugs of Gansu Province
- Lanzhou University
- Lanzhou
- China
| | - Jingyi Li
- Key Laboratory of Preclinical Study for New Drugs of Gansu Province
- Lanzhou University
- Lanzhou
- China
| | - Fengjing Jia
- Key Laboratory of Preclinical Study for New Drugs of Gansu Province
- Lanzhou University
- Lanzhou
- China
| | - Liang Hong
- School of Pharmaceutical Sciences
- Sun Yat-sen University
- Guangzhou
- China
| | - Rui Wang
- School of Pharmaceutical Sciences
- Sun Yat-sen University
- Guangzhou
- China
- Key Laboratory of Preclinical Study for New Drugs of Gansu Province
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17
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Yokoyama H, Kubo T, Matsumura Y, Hosokawa J, Miyazawa M, Hirai Y. The novel approach to indole alkaloids by using Pd(II)-catalyzed cyclization. Tetrahedron 2014. [DOI: 10.1016/j.tet.2014.10.051] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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18
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Tang CY, Tao Y, Wu XY, Sha F. Rhodium(III)-Catalyzed Direct C-2 Olefination of Unactivated Indoles Utilizing OH/NH2as Directing Group. Adv Synth Catal 2014. [DOI: 10.1002/adsc.201300930] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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19
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Das B, Kundu P, Chowdhury C. Facile synthesis of 2-arylmethylindoles and 2-vinylic indoles through palladium-catalyzed heteroannulations of 2-(2-propynyl)aniline and 2-(2-propynyl)tosylanilide. Org Biomol Chem 2014; 12:741-8. [DOI: 10.1039/c3ob41961d] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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20
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Álvarez E, García-García P, Fernández-Rodríguez MA, Sanz R. Regioselective Synthesis of Elusive 4,9-Dihydro-1H-Carbazoles by Gold-Catalyzed Cycloisomerization of 3-Allenylmethylindoles. J Org Chem 2013; 78:9758-71. [DOI: 10.1021/jo401388b] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Estela Álvarez
- Área de Química
Orgánica, Departamento de Química, Facultad de Ciencias, Universidad de Burgos, Pza. Misael Bañuelos s/n, 09001 Burgos, Spain
| | - Patricia García-García
- Área de Química
Orgánica, Departamento de Química, Facultad de Ciencias, Universidad de Burgos, Pza. Misael Bañuelos s/n, 09001 Burgos, Spain
| | - Manuel A. Fernández-Rodríguez
- Área de Química
Orgánica, Departamento de Química, Facultad de Ciencias, Universidad de Burgos, Pza. Misael Bañuelos s/n, 09001 Burgos, Spain
| | - Roberto Sanz
- Área de Química
Orgánica, Departamento de Química, Facultad de Ciencias, Universidad de Burgos, Pza. Misael Bañuelos s/n, 09001 Burgos, Spain
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21
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Pirovano V, Dell'Acqua M, Facoetti D, Nava D, Rizzato S, Abbiati G, Rossi E. Cycloaddition versus Alkylation Reactions of 2-Vinylindoles with α,β-Unsaturated Carbonyl Compounds Under Gold Catalysis. European J Org Chem 2013. [DOI: 10.1002/ejoc.201300725] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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22
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Lechel T, Pfrengle F, Reissig HU, Zimmer R. Three Carbons for Complexity! Recent Developments of Palladium-Catalyzed Reactions of Allenes. ChemCatChem 2013. [DOI: 10.1002/cctc.201200875] [Citation(s) in RCA: 112] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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23
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He Z, Liu T, Tao H, Wang CJ. A Facile Access to Enantioenriched Isoindolines via One-Pot Sequential Cu(I)-Catalyzed Asymmetric 1,3-Dipolar Cycloaddition/Aromatization. Org Lett 2012. [DOI: 10.1021/ol302987h] [Citation(s) in RCA: 50] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Affiliation(s)
- Zhaolin He
- College of Chemistry and Molecular Sciences, Wuhan University, 430072, China, and State Key Laboratory of Elemento-organic Chemistry, Nankai University, 300071, China
| | - Tanglin Liu
- College of Chemistry and Molecular Sciences, Wuhan University, 430072, China, and State Key Laboratory of Elemento-organic Chemistry, Nankai University, 300071, China
| | - Haiyan Tao
- College of Chemistry and Molecular Sciences, Wuhan University, 430072, China, and State Key Laboratory of Elemento-organic Chemistry, Nankai University, 300071, China
| | - Chun-Jiang Wang
- College of Chemistry and Molecular Sciences, Wuhan University, 430072, China, and State Key Laboratory of Elemento-organic Chemistry, Nankai University, 300071, China
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24
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Liu B, Hong X, Yan D, Xu S, Huang X, Xu B. Palladium-Catalyzed Tandem Allenyl and Aryl C–N Bond Formation: Efficient Access to N-Functionalized Multisubstituted Indoles. Org Lett 2012; 14:4398-401. [DOI: 10.1021/ol3018775] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Affiliation(s)
- Bingxin Liu
- Department of Chemistry, Shanghai University, Shanghai 200444, China, and State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai 200032, China, and Shanghai Key Laboratory of Green Chemistry and Chemical Processes, Department of Chemistry, East China Normal University, Shanghai 200062, China
| | - Xiaohu Hong
- Department of Chemistry, Shanghai University, Shanghai 200444, China, and State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai 200032, China, and Shanghai Key Laboratory of Green Chemistry and Chemical Processes, Department of Chemistry, East China Normal University, Shanghai 200062, China
| | - Dong Yan
- Department of Chemistry, Shanghai University, Shanghai 200444, China, and State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai 200032, China, and Shanghai Key Laboratory of Green Chemistry and Chemical Processes, Department of Chemistry, East China Normal University, Shanghai 200062, China
| | - Shuguang Xu
- Department of Chemistry, Shanghai University, Shanghai 200444, China, and State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai 200032, China, and Shanghai Key Laboratory of Green Chemistry and Chemical Processes, Department of Chemistry, East China Normal University, Shanghai 200062, China
| | - Xiaomei Huang
- Department of Chemistry, Shanghai University, Shanghai 200444, China, and State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai 200032, China, and Shanghai Key Laboratory of Green Chemistry and Chemical Processes, Department of Chemistry, East China Normal University, Shanghai 200062, China
| | - Bin Xu
- Department of Chemistry, Shanghai University, Shanghai 200444, China, and State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai 200032, China, and Shanghai Key Laboratory of Green Chemistry and Chemical Processes, Department of Chemistry, East China Normal University, Shanghai 200062, China
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25
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Tsuchikama K, Zhu J, Lowery CA, Kaufmann GF, Janda KD. C4-alkoxy-HPD: a potent class of synthetic modulators surpassing nature in AI-2 quorum sensing. J Am Chem Soc 2012; 134:13562-4. [PMID: 22866957 DOI: 10.1021/ja305532y] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Bacteria have developed cell-to-cell communication mechanisms, termed quorum sensing (QS), that regulate bacterial gene expression in a cell population-dependent manner. Autoinducer-2 (AI-2), a class of QS signaling molecules derived from (4S)-4,5-dihydroxy-2,3-pentanedione (DPD), has been identified in both Gram-negative and Gram-positive bacteria. Despite considerable interest in the AI-2 QS system, the biomolecular communication used by distinct bacterial species still remains shrouded. Herein, we report the synthesis and evaluation of a new class of DPD analogues, C4-alkoxy-5-hydroxy-2,3-pentanediones, termed C4-alkoxy-HPDs. Remarkably, two of the analogues were more potent QS agonists than the natural ligand, DPD, in Vibrio harveyi. The findings presented extend insights into ligand-receptor recognition/signaling in the AI-2 mediated QS system.
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Affiliation(s)
- Kyoji Tsuchikama
- The Skaggs Institute for Chemical Biology and Department of Chemistry, and Worm Institute for Research and Medicine (WIRM), The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, California 92037, USA
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26
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Schmidt AW, Reddy KR, Knölker HJ. Occurrence, Biogenesis, and Synthesis of Biologically Active Carbazole Alkaloids. Chem Rev 2012; 112:3193-328. [PMID: 22480243 DOI: 10.1021/cr200447s] [Citation(s) in RCA: 899] [Impact Index Per Article: 74.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Arndt W. Schmidt
- Department Chemie, Technische Universität Dresden,
Bergstrasse 66, 01069 Dresden, Germany
| | - Kethiri R. Reddy
- Department Chemie, Technische Universität Dresden,
Bergstrasse 66, 01069 Dresden, Germany
| | - Hans-Joachim Knölker
- Department Chemie, Technische Universität Dresden,
Bergstrasse 66, 01069 Dresden, Germany
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