1
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Hou Y, Huo J, Li R, Hou J, Lei P, Wei H, Xie W. Catalytic Asymmetric Reverse Prenylation of Indol-2-one Enabled a Synthesis of (-)-Debromoflustramine A. Org Lett 2023; 25:6949-6953. [PMID: 37713279 DOI: 10.1021/acs.orglett.3c02296] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/17/2023]
Abstract
A catalytic asymmetric nucleophilic reverse prenylation of indol-2-ones in situ generated from 3-bromooxindoles with prenyltributylstannane promoted by Ni(II)/chiral N,N'-dioxide was developed. This reaction provides facile access to C3 reverse-prenylated oxindoles in good to excellent enantioselectivities, which enabled the asymmetric synthesis of debromoflustramine A in five steps.
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Affiliation(s)
- Yi Hou
- Shaanxi Key Laboratory of Natural Products & Chemical Biology, College of Chemistry & Pharmacy, Northwest A&F University, 22 Xinong Road, Yangling, 712100 Shaanxi, China
| | - Jiyou Huo
- Shaanxi Key Laboratory of Natural Products & Chemical Biology, College of Chemistry & Pharmacy, Northwest A&F University, 22 Xinong Road, Yangling, 712100 Shaanxi, China
| | - Ruoxin Li
- Shaanxi Key Laboratory of Natural Products & Chemical Biology, College of Chemistry & Pharmacy, Northwest A&F University, 22 Xinong Road, Yangling, 712100 Shaanxi, China
| | - Jun Hou
- Shaanxi Key Laboratory of Natural Products & Chemical Biology, College of Chemistry & Pharmacy, Northwest A&F University, 22 Xinong Road, Yangling, 712100 Shaanxi, China
| | - Pan Lei
- Shaanxi Key Laboratory of Natural Products & Chemical Biology, College of Chemistry & Pharmacy, Northwest A&F University, 22 Xinong Road, Yangling, 712100 Shaanxi, China
| | - Hongbo Wei
- Shaanxi Key Laboratory of Natural Products & Chemical Biology, College of Chemistry & Pharmacy, Northwest A&F University, 22 Xinong Road, Yangling, 712100 Shaanxi, China
| | - Weiqing Xie
- Shaanxi Key Laboratory of Natural Products & Chemical Biology, College of Chemistry & Pharmacy, Northwest A&F University, 22 Xinong Road, Yangling, 712100 Shaanxi, China
- State Key Laboratory of Stress Biology for Arid Areas, Northwest A&F University, Yangling, 712100 Shaanxi, China
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2
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Gribble GW. Naturally Occurring Organohalogen Compounds-A Comprehensive Review. PROGRESS IN THE CHEMISTRY OF ORGANIC NATURAL PRODUCTS 2023; 121:1-546. [PMID: 37488466 DOI: 10.1007/978-3-031-26629-4_1] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/26/2023]
Abstract
The present volume is the third in a trilogy that documents naturally occurring organohalogen compounds, bringing the total number-from fewer than 25 in 1968-to approximately 8000 compounds to date. Nearly all of these natural products contain chlorine or bromine, with a few containing iodine and, fewer still, fluorine. Produced by ubiquitous marine (algae, sponges, corals, bryozoa, nudibranchs, fungi, bacteria) and terrestrial organisms (plants, fungi, bacteria, insects, higher animals) and universal abiotic processes (volcanos, forest fires, geothermal events), organohalogens pervade the global ecosystem. Newly identified extraterrestrial sources are also documented. In addition to chemical structures, biological activity, biohalogenation, biodegradation, natural function, and future outlook are presented.
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Affiliation(s)
- Gordon W Gribble
- Department of Chemistry, Dartmouth College, Hanover, NH, 03755, USA.
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3
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Yamashiro T, Abe T, Sawada D. Synthesis of 2-monosubstituted indolin-3-ones by cine-substitution of 3-azido-2-methoxyindolines. Org Chem Front 2022. [DOI: 10.1039/d2qo00048b] [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
We report herein the formal cine-substitution/hydrolysis of 3-azidoindole intermediates generated from 3-azido-2-methoxyindolines (AZINs). This protocol enables the introduction of both various carboxylic acid and alcohol into indolin-3-ones at the C2-position,...
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4
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Dotson JJ, Garg NK, Garcia-Garibay MA. Evaluation of the photodecarbonylation of crystalline ketones for the installation of reverse prenyl groups on the pyrrolidinoindoline scaffold. Tetrahedron 2021; 76. [PMID: 34898726 DOI: 10.1016/j.tet.2020.131181] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
We report synthetic efforts toward the regiocontrolled installation of the prenyl moiety in debromoflustramine A by the regiospecific photodecarbonylation of a prenyl-substituted ketone. Synthetic approaches to access the plausible photodecarbonylation substrates beginning from tryptamine were evaluated. Initial attempts to synthesize a suitable substrate for photodecarbonylation were hampered by a lack of substrate crystallinity (a prerequisite for solid-state photochemistry). Ultimately, a crystalline substrate could be accessed to attempt the key step by judicious selection of N-substituents. Although the photodecarbonylation did not result in the desired reverse prenylation, this study highlights the troubleshooting and optimization required for crystal phase photochemistry and underscores methods that can be used to control substrate crystallinity.
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Affiliation(s)
- Jordan J Dotson
- University of California, Los Angeles, Department of Chemistry and Biochemistry, Los Angeles, CA, 90095, USA
| | - Neil K Garg
- University of California, Los Angeles, Department of Chemistry and Biochemistry, Los Angeles, CA, 90095, USA
| | - Miguel A Garcia-Garibay
- University of California, Los Angeles, Department of Chemistry and Biochemistry, Los Angeles, CA, 90095, USA
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5
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Di X, Wang S, Oskarsson JT, Rouger C, Tasdemir D, Hardardottir I, Freysdottir J, Wang X, Molinski TF, Omarsdottir S. Bromotryptamine and Imidazole Alkaloids with Anti-inflammatory Activity from the Bryozoan Flustra foliacea. JOURNAL OF NATURAL PRODUCTS 2020; 83:2854-2866. [PMID: 33016699 DOI: 10.1021/acs.jnatprod.0c00126] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Chemical investigation of the marine bryozoan Flustra foliacea collected in Iceland resulted in isolation of 13 new bromotryptamine alkaloids, flustramines Q-W (1-7) and flustraminols C-H (8-13), and two new imidazole alkaloids, flustrimidazoles A and B (14 and 15), together with 12 previously described compounds (16-27). Their structures were established by detailed spectroscopic analysis using 1D and 2D NMR and HRESIMS. Structure 2 was verified by calculations of the 13C and 1H NMR chemical shifts using density functional theory. The relative and absolute configurations of the new compounds were elucidated on the basis of coupling constant analysis, NOESY, [α]D, and ECD spectroscopic data, in addition to chemical derivatization. The compounds were tested for in vitro anti-inflammatory activity using a dendritic cell model. Eight compounds (1, 3, 5, 13, 16, 18, 26, and 27) decreased dendritic cell secretion of the pro-inflammatory cytokine IL-12p40, and two compounds (4 and 14) increased secretion of the anti-inflammatory cytokine IL-10. Deformylflustrabromine B (27) showed the most potent anti-inflammatory effect (IC50 2.9 μM). These results demonstrate that F. foliacea from Iceland expresses a broad range of brominated alkaloids, many without structural precedents. The potent anti-inflammatory activity in vitro of metabolite 27 warrants further investigations into its potential as a lead for inflammation-related diseases.
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Affiliation(s)
- Xiaxia Di
- Faculty of Pharmaceutical Sciences, University of Iceland, IS-107 Reykjavik, Iceland
| | - Shuqi Wang
- Faculty of Pharmaceutical Science, Shandong University, 250012 Jinan, China
| | - Jon T Oskarsson
- Department of Immunology, Landspitali-The National University Hospital of Iceland, IS-101 Reykjavik, Iceland
| | - Caroline Rouger
- GEOMAR Centre for Marine Biotechnology (GEOMAR-Biotech), Marine Natural Products Chemistry Research Unit, GEOMAR Helmholtz Centre for Ocean Research Kiel, 24106 Kiel, Germany
| | - Deniz Tasdemir
- GEOMAR Centre for Marine Biotechnology (GEOMAR-Biotech), Marine Natural Products Chemistry Research Unit, GEOMAR Helmholtz Centre for Ocean Research Kiel, 24106 Kiel, Germany
- Faculty of Mathematics and Natural Sciences, Kiel University, 24118 Kiel, Germany
| | - Ingibjorg Hardardottir
- Department of Immunology, Landspitali-The National University Hospital of Iceland, IS-101 Reykjavik, Iceland
- Faculty of Medicine, Biomedical Center, University of Iceland, IS-101 Reykjavik, Iceland
| | - Jona Freysdottir
- Department of Immunology, Landspitali-The National University Hospital of Iceland, IS-101 Reykjavik, Iceland
- Faculty of Medicine, Biomedical Center, University of Iceland, IS-101 Reykjavik, Iceland
| | - Xiao Wang
- Analytical Research & Development, Merck & Co. Inc, Rahway, New Jersey 07065, United States
| | - Tadeusz F Molinski
- Department of Chemistry and Biochemistry and Skaggs School of Pharmacy and Pharmaceutical Sciences, University of California, 9500 Gilman Drive, La Jolla, California 92093, United States
| | - Sesselja Omarsdottir
- Faculty of Pharmaceutical Sciences, University of Iceland, IS-107 Reykjavik, Iceland
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6
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Almeida MC, Resende DISP, da Costa PM, Pinto MMM, Sousa E. Tryptophan derived natural marine alkaloids and synthetic derivatives as promising antimicrobial agents. Eur J Med Chem 2020; 209:112945. [PMID: 33153766 DOI: 10.1016/j.ejmech.2020.112945] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2020] [Revised: 10/01/2020] [Accepted: 10/13/2020] [Indexed: 02/03/2023]
Abstract
Antimicrobial resistance has become a major threat to public health worldwide, as pathogenic microorganisms are finding ways to evade all known antimicrobials. Therefore, the demand for new and effective antimicrobial agents is also increasing. Natural products have always played an important role in drug discovery, either by themselves or as inspiration for synthetic compounds. The marine environment is a rich source of bioactive metabolites, and among them, tryptophan-derived alkaloids stand out for their abundance and by displaying a variety of biological activities, with antimicrobial properties being among the most significant. This review aims to reveal the potential of marine alkaloids derived from tryptophan as antimicrobial agents. Relevant examples of these compounds and their synthetic analogues reported in the last decades are presented and discussed in detail, with their mechanism of action and synthetic approaches whenever relevant. Several tryptophan-derived marine alkaloids have shown potent and promising antimicrobial activities, whether against bacteria, fungi, or virus. Synthetic approaches to many of the compounds have been developed and recent methodologies are proving to be efficient. Even though most of the studies regarding the antimicrobial activity are still preliminary, this class of compounds has proven to be worth of further investigation and may provide useful lead compounds for the development of antimicrobial agents. Overall, marine alkaloids derived from tryptophan are revealed as a valuable class of antimicrobials and molecular modifications in order to reduce the toxicity of these compounds and additional studies regarding their mechanism of action are interesting topics to explore in the future.
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Affiliation(s)
- Mariana C Almeida
- Laboratório de Química Orgânica e Farmacêutica, Faculdade de Farmácia, Universidade do Porto, Rua de Jorge Viterbo Ferreira 228, 4050-313, Porto, Portugal; CIIMAR - Centro Interdisciplinar de Investigação Marinha e Ambiental, Terminal de Cruzeiros do Porto de Leixões, 4450-208, Matosinhos, Portugal
| | - Diana I S P Resende
- Laboratório de Química Orgânica e Farmacêutica, Faculdade de Farmácia, Universidade do Porto, Rua de Jorge Viterbo Ferreira 228, 4050-313, Porto, Portugal; CIIMAR - Centro Interdisciplinar de Investigação Marinha e Ambiental, Terminal de Cruzeiros do Porto de Leixões, 4450-208, Matosinhos, Portugal.
| | - Paulo M da Costa
- CIIMAR - Centro Interdisciplinar de Investigação Marinha e Ambiental, Terminal de Cruzeiros do Porto de Leixões, 4450-208, Matosinhos, Portugal; ICBAS - Instituto de Ciências Biomédicas Abel Salazar, Universidade do Porto, Rua de Jorge Viterbo Ferreira 228, 4050-313, Porto, Portugal
| | - Madalena M M Pinto
- Laboratório de Química Orgânica e Farmacêutica, Faculdade de Farmácia, Universidade do Porto, Rua de Jorge Viterbo Ferreira 228, 4050-313, Porto, Portugal; CIIMAR - Centro Interdisciplinar de Investigação Marinha e Ambiental, Terminal de Cruzeiros do Porto de Leixões, 4450-208, Matosinhos, Portugal
| | - Emília Sousa
- Laboratório de Química Orgânica e Farmacêutica, Faculdade de Farmácia, Universidade do Porto, Rua de Jorge Viterbo Ferreira 228, 4050-313, Porto, Portugal; CIIMAR - Centro Interdisciplinar de Investigação Marinha e Ambiental, Terminal de Cruzeiros do Porto de Leixões, 4450-208, Matosinhos, Portugal
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7
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Abe T, Kosaka Y, Asano M, Harasawa N, Mishina A, Nagasue M, Sugimoto Y, Katakawa K, Sueki S, Anada M, Yamada K. Direct C4-Benzylation of Indoles via Tandem Benzyl Claisen/Cope Rearrangements. Org Lett 2019; 21:826-829. [DOI: 10.1021/acs.orglett.8b04120] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
- Takumi Abe
- Faculty of Pharmaceutical Sciences, Health Sciences University of Hokkaido, Ishikari-tobetsu, Hokkaido 061-0293, Japan
| | - Yuta Kosaka
- Faculty of Pharmaceutical Sciences, Health Sciences University of Hokkaido, Ishikari-tobetsu, Hokkaido 061-0293, Japan
| | - Miku Asano
- Faculty of Pharmaceutical Sciences, Health Sciences University of Hokkaido, Ishikari-tobetsu, Hokkaido 061-0293, Japan
| | - Natsuki Harasawa
- Faculty of Pharmaceutical Sciences, Health Sciences University of Hokkaido, Ishikari-tobetsu, Hokkaido 061-0293, Japan
| | - Akane Mishina
- Faculty of Pharmaceutical Sciences, Health Sciences University of Hokkaido, Ishikari-tobetsu, Hokkaido 061-0293, Japan
| | - Misato Nagasue
- Faculty of Pharmaceutical Sciences, Health Sciences University of Hokkaido, Ishikari-tobetsu, Hokkaido 061-0293, Japan
| | - Yuri Sugimoto
- Faculty of Pharmaceutical Sciences, Health Sciences University of Hokkaido, Ishikari-tobetsu, Hokkaido 061-0293, Japan
| | - Kazuaki Katakawa
- Faculty of Pharmacy, Musashino University, 1-1-20 Shinmachi, Nishitokyo-shi 202-8585, Japan
| | - Shunsuke Sueki
- Faculty of Pharmacy, Musashino University, 1-1-20 Shinmachi, Nishitokyo-shi 202-8585, Japan
| | - Masahiro Anada
- Faculty of Pharmacy, Musashino University, 1-1-20 Shinmachi, Nishitokyo-shi 202-8585, Japan
| | - Koji Yamada
- Faculty of Pharmaceutical Sciences, Health Sciences University of Hokkaido, Ishikari-tobetsu, Hokkaido 061-0293, Japan
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8
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Gupta GR, Shah J, Vadagaonkar KS, Lavekar AG, Kapdi AR. Hetero-bimetallic cooperative catalysis for the synthesis of heteroarenes. Org Biomol Chem 2019; 17:7596-7631. [DOI: 10.1039/c9ob01152h] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Review covering the synthesis of 5- and 6-membered as well as condensed heteroarenes, focussing on the combinations in cooperative catalytic systems in strategies used to achieve selectivity and also highlights the mode of action for the cooperative catalysis leading to the synthesis of commercially and biologically relevant heteroarenes.
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Affiliation(s)
- Gaurav R. Gupta
- Department of Chemistry
- Institute of Chemical Technology
- Mumbai-400019
- India
| | - Jagrut Shah
- Department of Chemistry
- Institute of Chemical Technology
- Mumbai-400019
- India
| | | | - Aditya G. Lavekar
- Former Research Fellow
- Medicinal and Process Chemistry Division
- CSIR-Central Drug Research Institute
- Lucknow-226031
- India
| | - Anant R. Kapdi
- Department of Chemistry
- Institute of Chemical Technology
- Mumbai-400019
- India
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9
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Li Y, Li L, Lu X, Bai Y, Wang Y, Wu Y, Zhong F. Bioinspired radical cyclization of tryptamines: synthesis of peroxypyrroloindolenines as potential anti-cancer agents. Chem Commun (Camb) 2019; 55:63-66. [DOI: 10.1039/c8cc08866g] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Inspired by the heme iron-catalyzed radical insertion of dioxygen to the tryptophan indole ring, herein we utilize alkylperoxy radical species as a coupling partner to trigger a peroxycyclization of readily accessible tryptophan derivatives and enable the first synthesis of peroxypyrroloindolenines.
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Affiliation(s)
- Yan Li
- Hubei Key Laboratory of Bioinorganic Chemistry & Materia Medica
- School of Chemistry and Chemical Engineering
- Huazhong University of Science and Technology (HUST)
- Wuhan 430074
- China
| | - Longjie Li
- Hubei Key Laboratory of Bioinorganic Chemistry & Materia Medica
- School of Chemistry and Chemical Engineering
- Huazhong University of Science and Technology (HUST)
- Wuhan 430074
- China
| | - Xunbo Lu
- Hubei Key Laboratory of Bioinorganic Chemistry & Materia Medica
- School of Chemistry and Chemical Engineering
- Huazhong University of Science and Technology (HUST)
- Wuhan 430074
- China
| | - Yulong Bai
- Hubei Key Laboratory of Bioinorganic Chemistry & Materia Medica
- School of Chemistry and Chemical Engineering
- Huazhong University of Science and Technology (HUST)
- Wuhan 430074
- China
| | - Yufan Wang
- Hubei Key Laboratory of Bioinorganic Chemistry & Materia Medica
- School of Chemistry and Chemical Engineering
- Huazhong University of Science and Technology (HUST)
- Wuhan 430074
- China
| | - Yuzhou Wu
- Hubei Key Laboratory of Bioinorganic Chemistry & Materia Medica
- School of Chemistry and Chemical Engineering
- Huazhong University of Science and Technology (HUST)
- Wuhan 430074
- China
| | - Fangrui Zhong
- Hubei Key Laboratory of Bioinorganic Chemistry & Materia Medica
- School of Chemistry and Chemical Engineering
- Huazhong University of Science and Technology (HUST)
- Wuhan 430074
- China
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10
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Sumiyoshi T, Ishida K, Shimizu M, Yamai YS, Natsutani I, Uesato S, Nagaoka Y. Asymmetric Synthesis of t-Butyl 3-Alkyl-oxindole-3-carboxylates via Chiral Phosphoric Acid Catalyzed Desymmetrization of Di-t-butyl 2-Alkyl-2-(2-aminophenyl)malonates. HETEROCYCLES 2019. [DOI: 10.3987/com-18-s(f)87] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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11
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Tak RK, Gupta N, Kumar M, Kureshy RI, Khan NUH, Suresh E. Regioselective Alcoholysis and Hydrochlorination Reactions of Spiro-Epoxy Oxindoles at the Spiro-Centre: Synthesis of 3,3-Disubstituted Oxindoles and Application for Anticancer Agents. European J Org Chem 2018. [DOI: 10.1002/ejoc.201801002] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Raj Kumar Tak
- Inorganic Materials and Catalysis Division; CSIR-Central Salt and Marine Chemicals Research Institute; G. B. Marg 364002, Gujarat Bhavnagar - India
- Academy of Scientific and Innovative Research; CSIR-Central Salt and Marine Chemicals Research Institute; Council of Scientific & Industrial Research (CSIR); G. B. Marg 364002, Gujarat Bhavnagar - India
| | - Naveen Gupta
- Inorganic Materials and Catalysis Division; CSIR-Central Salt and Marine Chemicals Research Institute; G. B. Marg 364002, Gujarat Bhavnagar - India
- Academy of Scientific and Innovative Research; CSIR-Central Salt and Marine Chemicals Research Institute; Council of Scientific & Industrial Research (CSIR); G. B. Marg 364002, Gujarat Bhavnagar - India
| | - Manish Kumar
- Inorganic Materials and Catalysis Division; CSIR-Central Salt and Marine Chemicals Research Institute; G. B. Marg 364002, Gujarat Bhavnagar - India
- Academy of Scientific and Innovative Research; CSIR-Central Salt and Marine Chemicals Research Institute; Council of Scientific & Industrial Research (CSIR); G. B. Marg 364002, Gujarat Bhavnagar - India
| | - Rukhsana I. Kureshy
- Inorganic Materials and Catalysis Division; CSIR-Central Salt and Marine Chemicals Research Institute; G. B. Marg 364002, Gujarat Bhavnagar - India
- Academy of Scientific and Innovative Research; CSIR-Central Salt and Marine Chemicals Research Institute; Council of Scientific & Industrial Research (CSIR); G. B. Marg 364002, Gujarat Bhavnagar - India
| | - Noor-ul H. Khan
- Inorganic Materials and Catalysis Division; CSIR-Central Salt and Marine Chemicals Research Institute; G. B. Marg 364002, Gujarat Bhavnagar - India
- Academy of Scientific and Innovative Research; CSIR-Central Salt and Marine Chemicals Research Institute; Council of Scientific & Industrial Research (CSIR); G. B. Marg 364002, Gujarat Bhavnagar - India
| | - E. Suresh
- Academy of Scientific and Innovative Research; CSIR-Central Salt and Marine Chemicals Research Institute; Council of Scientific & Industrial Research (CSIR); G. B. Marg 364002, Gujarat Bhavnagar - India
- Analytical Division and Centralized Instrument Facility; CSIR-Central Salt and Marine Chemicals Research Institute; G. B. Marg 364002 Bhavnagar - Gujarat India
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12
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Cui Z, Du DM. Decarboxylative Synthesis of Functionalized Oxindoles via An Iron-Initiated Radical Chain Process and Application in Constructing Diverse Fused-Indoline Heterocycles. Adv Synth Catal 2017. [DOI: 10.1002/adsc.201700976] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Zhihao Cui
- School of Chemistry and Chemical Engineering; Beijing Institute of Technology; Beijing 100081 People's Republic of China
| | - Da-Ming Du
- School of Chemistry and Chemical Engineering; Beijing Institute of Technology; Beijing 100081 People's Republic of China
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13
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Wu K, Du Y, Wang T. Visible-Light-Mediated Construction of Pyrroloindolines via an Amidyl Radical Cyclization/Carbon Radical Addition Cascade: Rapid Synthesis of (±)-Flustramide B. Org Lett 2017; 19:5669-5672. [DOI: 10.1021/acs.orglett.7b02837] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Kui Wu
- Department of Chemistry, University at Albany, State University of New York, 1400 Washington Avenue, Albany, New York 12222, United States
| | - Yuliu Du
- Department of Chemistry, University at Albany, State University of New York, 1400 Washington Avenue, Albany, New York 12222, United States
| | - Ting Wang
- Department of Chemistry, University at Albany, State University of New York, 1400 Washington Avenue, Albany, New York 12222, United States
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14
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Trost BM, Chan WH, Malhotra S. Development of the Regiodivergent Asymmetric Prenylation of 3-Substituted Oxindoles. Chemistry 2017; 23:4405-4414. [PMID: 28141896 PMCID: PMC5530868 DOI: 10.1002/chem.201605810] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2016] [Indexed: 11/06/2022]
Abstract
This paper describes our efforts to design a Pd-catalyzed asymmetric prenylation of 3-substituted oxindoles that affords access to both the linear and reverse-prenylated products. Both 3-alkyl- and 3-aryloxindoles performed well under our optimized reaction conditions. The regiodivergent alkylation of monoterpene-derived electrophiles using this methodology was also investigated. The utility of this methodology in natural product synthesis was demonstrated through the efficient total syntheses of four Flustra alkaloids, which also allowed the absolute stereochemistry of the prenylated oxindole products to be assigned. Surprisingly, the same enantiomer of ligand produced linear and branched regioisomers of opposite chirality.
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Affiliation(s)
- Barry M Trost
- Department of Chemistry, Stanford University, Stanford, CA, 94305, USA
| | - Walter H Chan
- University of Toronto, 78 Queens Park, Toronto, ON, M5S 2C5, Canada
| | - Sushant Malhotra
- Discovery Chemistry, Genentech, 1 DNA Way, South San Francisco, CA, 94080, USA
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15
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Dual cobalt(II)/silver catalysis: synthesis of aryliminated pyrrolo[2,3-b]indoles via multicomponent bicyclization cascades. Tetrahedron Lett 2016. [DOI: 10.1016/j.tetlet.2016.09.046] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
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16
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Shiri M, Farajpour B, Bozorgpour-Savadjani Z, Shintre SA, Koorbanally NA, Kruger HG, Notash B. Transition-metal free highly selective aerobic oxidation of hindered 2-alkylindoles. Tetrahedron 2015. [DOI: 10.1016/j.tet.2015.06.065] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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17
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Cordero-Rivera RE, Meléndez-Rodríguez M, Suárez-Castillo OR, Bautista-Hernández CI, Trejo-Carbajal N, Cruz-Borbolla J, Castelán-Duarte LE, Morales-Ríos MS, Joseph-Nathan P. Formal synthesis of (−)-flustramine B and its absolute configuration assignment by vibrational circular dichroism exciton chirality. ACTA ACUST UNITED AC 2015. [DOI: 10.1016/j.tetasy.2015.05.009] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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18
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Gao Q, Zhou P, Liu F, Hao WJ, Yao C, Jiang B, Tu SJ. Cobalt(ii)/silver relay catalytic isocyanide insertion/cycloaddition cascades: a new access to pyrrolo[2,3-b]indoles. Chem Commun (Camb) 2015; 51:9519-22. [DOI: 10.1039/c5cc02754c] [Citation(s) in RCA: 77] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
The combination of Co(acac)2 and AgOTf enables the bimetallic relay catalysis reaction of 2-ethynylanilines and isocyanides, allowing an easy and low-cost access to new densely functionalized pyrrolo[2,3-b]indoles.
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Affiliation(s)
- Qian Gao
- Jiangsu Key Laboratory of Green Synthetic Chemistry for Functional Materials
- Jiangsu Normal University
- Xuzhou
- P. R. China
| | - Peng Zhou
- Jiangsu Key Laboratory of Green Synthetic Chemistry for Functional Materials
- Jiangsu Normal University
- Xuzhou
- P. R. China
| | - Feng Liu
- Jiangsu Key Laboratory of Green Synthetic Chemistry for Functional Materials
- Jiangsu Normal University
- Xuzhou
- P. R. China
| | - Wen-Juan Hao
- Jiangsu Key Laboratory of Green Synthetic Chemistry for Functional Materials
- Jiangsu Normal University
- Xuzhou
- P. R. China
| | - Changsheng Yao
- Jiangsu Key Laboratory of Green Synthetic Chemistry for Functional Materials
- Jiangsu Normal University
- Xuzhou
- P. R. China
| | - Bo Jiang
- Jiangsu Key Laboratory of Green Synthetic Chemistry for Functional Materials
- Jiangsu Normal University
- Xuzhou
- P. R. China
| | - Shu-Jiang Tu
- Jiangsu Key Laboratory of Green Synthetic Chemistry for Functional Materials
- Jiangsu Normal University
- Xuzhou
- P. R. China
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19
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Ruchti J, Carreira EM. Ir-catalyzed reverse prenylation of 3-substituted indoles: total synthesis of (+)-aszonalenin and (-)-brevicompanine B. J Am Chem Soc 2014; 136:16756-9. [PMID: 25365411 DOI: 10.1021/ja509893s] [Citation(s) in RCA: 106] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
The selective reverse prenylation of 3-substituted-1H-indoles at C3 is described. The iridium-catalyzed reaction proceeds with high branched to linear selectivity (>20:1) for a variety of indoles. In addition, a diastereoselective reverse prenylation of tryptophan methyl ester is disclosed, and its synthetic utility is demonstrated in the synthesis of (+)-aszonalenin and (-)-brevicompanine B.
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Affiliation(s)
- Jonathan Ruchti
- Eidgenössische Technische Hochschule Zürich , 8093 Zürich, Switzerland
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20
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Zhao MX, Ji FH, Zhao XL, Han ZZ, Shi M. Diastereo- and Enantioselective Michael Addition of 3-Substituted Oxindoles to Trifluoromethyl-Substituted Nitro Olefins Catalyzed by aCinchona-Alkaloid-Derived Squaramide. European J Org Chem 2013. [DOI: 10.1002/ejoc.201301457] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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21
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Quintavalla A, Lanza F, Montroni E, Lombardo M, Trombini C. Organocatalytic Conjugate Addition of Nitroalkanes to 3-Ylidene Oxindoles: A Stereocontrolled Diversity Oriented Route to Oxindole Derivatives. J Org Chem 2013; 78:12049-64. [DOI: 10.1021/jo402099p] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- Arianna Quintavalla
- Department of Chemistry
‘‘G. Ciamician’’, Alma Mater Studiorum, University of Bologna, Via Selmi, 2, I-40126 Bologna, Italy
| | - Francesco Lanza
- Department of Chemistry
‘‘G. Ciamician’’, Alma Mater Studiorum, University of Bologna, Via Selmi, 2, I-40126 Bologna, Italy
| | - Elisa Montroni
- Department of Chemistry
‘‘G. Ciamician’’, Alma Mater Studiorum, University of Bologna, Via Selmi, 2, I-40126 Bologna, Italy
- Consorzio Interuniversitario “CINMPIS”, V. Orabona 4, 70125 Bari, Italy
| | - Marco Lombardo
- Department of Chemistry
‘‘G. Ciamician’’, Alma Mater Studiorum, University of Bologna, Via Selmi, 2, I-40126 Bologna, Italy
| | - Claudio Trombini
- Department of Chemistry
‘‘G. Ciamician’’, Alma Mater Studiorum, University of Bologna, Via Selmi, 2, I-40126 Bologna, Italy
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22
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Li YJ, Huang HM, Dong HQ, Jia JH, Han L, Ye Q, Gao JR. The Synthesis of Benzo[f]isoindole-1,3-dicarboxylates via an I2-Induced 1,3-Dipolar Cycloaddition Reaction. J Org Chem 2013; 78:9424-30. [DOI: 10.1021/jo401652k] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Yu-Jin Li
- State Key
Laboratory Breeding
Base of Green Chemistry-Synthesis Technology, Zhejiang University of Technology, Hangzhou 310032, P. R. China
| | - Huan-Ming Huang
- State Key
Laboratory Breeding
Base of Green Chemistry-Synthesis Technology, Zhejiang University of Technology, Hangzhou 310032, P. R. China
| | - Hua-Qing Dong
- State Key
Laboratory Breeding
Base of Green Chemistry-Synthesis Technology, Zhejiang University of Technology, Hangzhou 310032, P. R. China
| | - Jian-Hong Jia
- State Key
Laboratory Breeding
Base of Green Chemistry-Synthesis Technology, Zhejiang University of Technology, Hangzhou 310032, P. R. China
| | - Liang Han
- State Key
Laboratory Breeding
Base of Green Chemistry-Synthesis Technology, Zhejiang University of Technology, Hangzhou 310032, P. R. China
| | - Qing Ye
- State Key
Laboratory Breeding
Base of Green Chemistry-Synthesis Technology, Zhejiang University of Technology, Hangzhou 310032, P. R. China
| | - Jian-Rong Gao
- State Key
Laboratory Breeding
Base of Green Chemistry-Synthesis Technology, Zhejiang University of Technology, Hangzhou 310032, P. R. China
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23
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Liu R, Zhang J. Organocatalytic Michael Addition of Malonates to Isatylidene-3-acetaldehydes: Application to the Total Synthesis of (−)-Debromoflustramine E. Chemistry 2013; 19:7319-23. [DOI: 10.1002/chem.201300977] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2013] [Indexed: 12/13/2022]
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24
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Li YJ, Huang HM, Ju J, Jia JH, Han L, Ye Q, Yu WB, Gao JR. Iodine mediated reaction of quinones and N-substituted amino esters to 2-substituted benzo[f]isoindole-4,9-diones. RSC Adv 2013. [DOI: 10.1039/c3ra44095h] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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25
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Adla SK, Sasse F, Kelter G, Fiebig HH, Lindel T. Doubly prenylated tryptamines: cytotoxicity, antimicrobial activity and cyclisation to the marine natural product flustramine A. Org Biomol Chem 2013; 11:6119-30. [DOI: 10.1039/c3ob40896e] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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26
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Ozawa T, Kanematsu M, Yokoe H, Yoshida M, Shishido K. Total Synthesis of Debromoflustramines B and E Based on the Intramolecular Carbamoylketene–Alkene [2 + 2] Cycloaddition. J Org Chem 2012; 77:9240-9. [DOI: 10.1021/jo301817w] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Tsukasa Ozawa
- Graduate
School of Pharmaceutical Sciences, The University of Tokushima, 1-78-1 Sho-machi, Tokushima
770-8505, Japan
| | - Makoto Kanematsu
- Graduate
School of Pharmaceutical Sciences, The University of Tokushima, 1-78-1 Sho-machi, Tokushima
770-8505, Japan
| | - Hiromasa Yokoe
- Graduate
School of Pharmaceutical Sciences, The University of Tokushima, 1-78-1 Sho-machi, Tokushima
770-8505, Japan
| | - Masahiro Yoshida
- Graduate
School of Pharmaceutical Sciences, The University of Tokushima, 1-78-1 Sho-machi, Tokushima
770-8505, Japan
| | - Kozo Shishido
- Graduate
School of Pharmaceutical Sciences, The University of Tokushima, 1-78-1 Sho-machi, Tokushima
770-8505, Japan
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27
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Shinada M, Narumi F, Osada Y, Matsumoto K, Yoshida T, Higuchi K, Kawasaki T, Tanaka H, Satoh M. Synthesis of phenserine analogues and evaluation of their cholinesterase inhibitory activities. Bioorg Med Chem 2012; 20:4901-14. [DOI: 10.1016/j.bmc.2012.06.048] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2012] [Revised: 06/27/2012] [Accepted: 06/28/2012] [Indexed: 11/29/2022]
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28
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Abstract
A series of chiral quaternary ammonium salts derived from commercially available (R)- or (S)-binaphthol have been designed as new C2-symmetric chiral phase-transfer catalysts. In order to realize the flexible design of these phase-transfer catalysts, the combinatorial design approach has been developed. Chiral high-performance organocatalysts, thus obtained, have been successfully applied to the highly practical asymmetric synthesis of various amino acid derivatives, including α-alkyl and α,α-dialkyl-α-amino acids in addition to alkaloids. Furthermore, several chiral bifunctional phase-transfer catalysts have been designed and synthesized for effecting base-free phase-transfer reactions under essentially neutral conditions in order to realize green sustainable chemistry.
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29
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Suárez-Castillo OR, Meléndez-Rodríguez M, Castelán-Duarte LE, Zúñiga-Estrada EA, Cruz-Borbolla J, Morales-Ríos MS, Joseph-Nathan P. Absolute configuration assignment of 3-oxindolylacetyl-4-phenyloxazolidinone derivatives. ACTA ACUST UNITED AC 2011. [DOI: 10.1016/j.tetasy.2011.11.018] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
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30
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Liu YZ, Zhang J, Xu PF, Luo YC. Organocatalytic Asymmetric Michael Addition of 1-Acetylindolin-3-ones to α,β-Unsaturated Aldehydes: Synthesis of 2-Substituted Indolin-3-ones. J Org Chem 2011; 76:7551-5. [DOI: 10.1021/jo201123p] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Yao-Zong Liu
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, People’s Republic of China
| | - Jie Zhang
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, People’s Republic of China
| | - Peng-Fei Xu
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, People’s Republic of China
| | - Yong-Chun Luo
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, People’s Republic of China
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31
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Li P, Buchwald SL. Continuous-Flow Synthesis of 3,3-Disubstituted Oxindoles by a Palladium-Catalyzed α-Arylation/Alkylation Sequence. Angew Chem Int Ed Engl 2011; 50:6396-400. [DOI: 10.1002/anie.201102401] [Citation(s) in RCA: 82] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2011] [Indexed: 11/07/2022]
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32
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Li P, Buchwald SL. Continuous-Flow Synthesis of 3,3-Disubstituted Oxindoles by a Palladium-Catalyzed α-Arylation/Alkylation Sequence. Angew Chem Int Ed Engl 2011. [DOI: 10.1002/ange.201102401] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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33
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Trost BM, Malhotra S, Chan WH. Exercising regiocontrol in palladium-catalyzed asymmetric prenylations and geranylation: unifying strategy toward flustramines A and B. J Am Chem Soc 2011; 133:7328-31. [PMID: 21520958 PMCID: PMC3144703 DOI: 10.1021/ja2020873] [Citation(s) in RCA: 157] [Impact Index Per Article: 12.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Pd-catalyzed asymmetric prenylation of oxindoles to afford selectively either the prenyl or reverse-prenyl product has been demonstrated. Control of the regioselectivity in this transformation is governed by the choice of ligand, solvent, and halide additive. The resulting prenylated and reverse-prenylated products were transformed into ent-flustramides and ent-flustramines A and B. Additionally, control of the regio- and diastereoselectivity was obtained using π-geranylpalladium complexes.
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Affiliation(s)
- Barry M Trost
- Department of Chemistry, Stanford University, Stanford, California 94305-5080, USA.
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34
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Liu YZ, Cheng RL, Xu PF. Asymmetric Michael addition of 1-acetylindolin-3-ones to β-nitrostyrenes catalyzed by bifunctional thioureas: a simple access to 2-functionalized indoles. J Org Chem 2011; 76:2884-7. [PMID: 21395222 DOI: 10.1021/jo102022g] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
The first asymmetric Michael addition of 1-acetylindolin-3-ones to β-nitrostyrenes has been developed. 2-Substituted indolin-3-one derivatives were obtained with excellent yields (up to 99%) and good stereoselectivities (up to 28:1 dr and 92% ee), which could be transformed into 2-functionalized indoles easily without racemization. This achievement might further contribute to the chemistry and pharmacology of indole-related compounds.
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Affiliation(s)
- Yao-Zong Liu
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, PR China
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35
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Ruiz-Sanchis P, Savina SA, Albericio F, Álvarez M. Structure, Bioactivity and Synthesis of Natural Products with Hexahydropyrrolo[2,3-b]indole. Chemistry 2011; 17:1388-408. [DOI: 10.1002/chem.201001451] [Citation(s) in RCA: 384] [Impact Index Per Article: 29.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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36
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Abstract
Important biologically active indole alkaloids are decorated with prenyl (3,3-dimethylallyl) and tert-prenyl (1,1-dimethylallyl) groups. Covering the literature until the end of 2010, this review article comprehensively summarises and discusses the currently available technologies of prenylation and tert-prenylation of indoles, which have been applied in natural products total syntheses or could be applied there in the near future. We focus on those procedures which introduce the C(5) units in one step, organised according to the indole position to be functionalised. Key strategies include electrophilic and nucleophilic prenylation and tert-prenylation, prenyl and tert-prenyl rearrangements, transition metal-mediated reactions and enzymatic methods.
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Affiliation(s)
- Thomas Lindel
- Institut für Organische Chemie, TU Braunschweig, Hagenring 30, 38106 Braunschweig, Germany.
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37
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Ignatenko VA, Deligonul N, Viswanathan R. Branch-selective synthesis of oxindole and indene scaffolds: transition metal-controlled intramolecular aryl amidation leading to c3 reverse-prenylated oxindoles. Org Lett 2010; 12:3594-7. [PMID: 20704399 DOI: 10.1021/ol1012372] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
In an effort to access biologically important scaffolds, a concise branch-selective synthesis of C3 tertiary oxindoles by Cu(I)-catalyzed aryl amidation and 2,2-dimethyl indene by Pd(0)-catalyzed Heck cyclization has been accomplished from acyclic reverse-prenylated intermediates. Oxindole C3-enolate generation using NaH followed by alkylation in the presence of appropriate electrophiles provides a novel route to quaternary C3 reverse-prenylated oxindoles.
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Affiliation(s)
- Vasily A Ignatenko
- Department of Chemistry, Case Western Reserve University, Cleveland, Ohio 44106, USA
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38
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Iizuka T, Takiguchi S, Kumakura YS, Tsukioka N, Higuchi K, Kawasaki T. First total synthesis and stereochemical revision of okaramine M. Tetrahedron Lett 2010. [DOI: 10.1016/j.tetlet.2010.09.026] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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39
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Maruoka K. Highly practical amino acid and alkaloid synthesis using designer chiral phase transfer catalysts as high-performance organocatalysts. CHEM REC 2010; 10:254-9. [DOI: 10.1002/tcr.201000019] [Citation(s) in RCA: 78] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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40
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Seo JH, Liu P, Weinreb SM. Evolution of a strategy for total synthesis of the marine fungal alkaloid (+/-)-communesin F. J Org Chem 2010; 75:2667-80. [PMID: 20334369 DOI: 10.1021/jo100339k] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A new synthetic strategy for construction of the heptacyclic marine fungal alkaloid (+/-)-communesin F has been devised. Key reactions include an intramolecular Heck cyclization of a tetrasubstituted alkene to generate a tetracyclic enamide bearing one of the quaternary carbon centers (C7) of the alkaloid, an intramolecular reductive cyclization of an N-Boc aniline onto the oxindole moiety to form a pentacyclic framework containing the southern aminal, a stereoselective N-Boc-lactam enolate C-allylation to introduce the second quaternary carbon center (C8), and an azide reduction/N-Boc-lactam-opening cascade leading to the northern aminal.
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Affiliation(s)
- Jae Hong Seo
- Department of Chemistry, The Pennsylvania State University, University Park, Pennsylvania 16802, USA
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41
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Takiguchi S, Iizuka T, Kumakura YS, Murasaki K, Ban N, Higuchi K, Kawasaki T. Total syntheses of (-)-fructigenine A and (-)-5-N-acetylardeemin. J Org Chem 2010; 75:1126-31. [PMID: 20073509 DOI: 10.1021/jo9023107] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The first total synthesis of (-)-fructigenine A and a novel approach to (-)-5-N-acetylardeemin through a common imine intermediate (+)-3 are described. The key steps include highly enantioselective preparation of (+)-3 via domino olefination/isomerization/Claisen rearrangement (OIC) of 5, reductive cyclization (RC), and regioselective oxidation of (-)-4 and a novel assembly of the pyrazino ring of these alkaloids via Ugi three-component reaction/cyclization of (+)-3 with the corresponding amino acid and isonitrile.
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Affiliation(s)
- Satoshi Takiguchi
- Meiji Pharmaceutical University, 2-522-1 Noshio, Kiyose, Tokyo 204-8588, Japan
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42
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Liu P, Seo JH, Weinreb SM. Total synthesis of the polycyclic fungal metabolite (+/-)-communesin F. Angew Chem Int Ed Engl 2010; 49:2000-3. [PMID: 20175174 PMCID: PMC3401040 DOI: 10.1002/anie.200906818] [Citation(s) in RCA: 99] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Peng Liu
- Department of Chemistry, The Pennsylvania State University, University Park, Pennsylvania, 16802 USA, Fax: 814-865-3292
| | - Jae Hong Seo
- Department of Chemistry, The Pennsylvania State University, University Park, Pennsylvania, 16802 USA, Fax: 814-865-3292
| | - Steven M. Weinreb
- Department of Chemistry, The Pennsylvania State University, University Park, Pennsylvania, 16802 USA, Fax: 814-865-3292
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43
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Liu P, Seo J, Weinreb S. Total Synthesis of the Polycyclic Fungal Metabolite (±)-Communesin F. Angew Chem Int Ed Engl 2010. [DOI: 10.1002/ange.200906818] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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44
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He R, Shirakawa S, Maruoka K. Enantioselective base-free phase-transfer reaction in water-rich solvent. J Am Chem Soc 2010; 131:16620-1. [PMID: 19886657 DOI: 10.1021/ja906821y] [Citation(s) in RCA: 210] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The development of enantioselective phase-transfer catalysis for preparing important natural products or physiologically active compounds is quite attractive and challenging in terms of environmental consciousness. Although quaternary ammonium salts as phase-transfer catalysts are believed to require base additives for phase-transfer reactions, we have discovered that even without any base additives, the enantioselective phase-transfer conjugate addition of 3-phenyloxindole to beta-nitrostyrene proceeded smoothly in the presence of a chiral bifunctional ammonium bromide under neutral conditions in water-rich solvent with both high diastereo- and enantioselectivity.
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Affiliation(s)
- Rongjun He
- Laboratory of Synthetic Organic Chemistry, Department of Chemistry, Graduate School of Science, Kyoto University, Sakyo, Kyoto 606-8502, Japan
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45
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Kawasaki T, Shinada M, Aihara Y, Takiguchi S, Ban N, Higuchi K. Reductive Cyclization of 3-Cyanomethyloxindoles to Hexahydro-2-oxopyrrolo[2,3-b]indoles with Lithium Aluminum Hydride. HETEROCYCLES 2010. [DOI: 10.3987/com-10-s(e)35] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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46
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Hapke M, Gutnov A, Weding N, Spannenberg A, Fischer C, Benkhäuser-Schunk C, Heller B. Use of the DielsâAlder Cycloaddition of Tetracyclone and Internal Aryl Acetylenes for the Synthesis of Functionalized AtropÂisomeric Biaryls. European J Org Chem 2010. [DOI: 10.1002/ejoc.200901080] [Citation(s) in RCA: 12] [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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47
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Ishikura M, Yamada K, Abe T. Simple indole alkaloids and those with a nonrearranged monoterpenoid unit. Nat Prod Rep 2010; 27:1630-80. [DOI: 10.1039/c005345g] [Citation(s) in RCA: 210] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
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48
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49
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Kulkarni MG, Dhondge AP, Borhade AS, Gaikwad DD, Chavhan SW, Shaikh YB, Nigdale VB, Desai MP, Birhade DR, Shinde MP. Total Synthesis of (±)-Physovenine. European J Org Chem 2009. [DOI: 10.1002/ejoc.200900391] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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50
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