1
|
Parui N, Mandal T, Maiti S, Dash J. Efficient Synthesis of Cyclohepta[b]indoles and Cyclohepta[b]indole-Indoline Conjugates via RCM, Hydrogenation, and Acid-Catalyzed Ring Expansion: A Biomimetic Approach. Chemistry 2024; 30:e202401059. [PMID: 38623002 DOI: 10.1002/chem.202401059] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2024] [Accepted: 04/15/2024] [Indexed: 04/17/2024]
Abstract
Cyclohepta[b]indoles, prevalent in natural products and pharmaceuticals, are conventionally accessed via metal or Lewis acid-mediated cycloadditions with prefunctionalized substrates. Our study introduces an innovative sequential catalytic assembly for synthesizing cyclohepta[b]indoles from readily available isatin derivatives. The process involves three catalytic sequences: ring-closing metathesis, catalytic hydrogenation, and acid-catalyzed ring expansion. The RCM of 2,2-dialkene-3-oxindoles, formed by butenyl Grignard addition to 3-allyl-3-hydroxy-2-oxindoles, yields versatile spirocyclohexene-3-oxindole derivatives. These derivatives undergo further transformations, including dibromination, dihydroxylation, epoxidation, Wacker oxidation at the double bond. Hydrogenation of spirocyclohexene-3-oxindole yields spirocyclohexane-3-oxindoles. Their subsequent acid-catalyzed ring expansion/aromatization, dependent on the acid catalyst, results in either cyclohepta[b]indoles or cyclohepta[b]indole-indoline conjugates, adding a unique synthetic dimension. The utility of this methodology is exemplified through the synthesis of an A-FABP inhibitor, showcasing its potential in pharmaceutical applications.
Collapse
Affiliation(s)
- Nabin Parui
- School of chemical sciences, Indian Association for the Cultivation of Science, Jadavpur, 700032, Kolkata, India
| | - Tirtha Mandal
- School of chemical sciences, Indian Association for the Cultivation of Science, Jadavpur, 700032, Kolkata, India
| | - Sandip Maiti
- School of chemical sciences, Indian Association for the Cultivation of Science, Jadavpur, 700032, Kolkata, India
| | - Jyotirmayee Dash
- School of chemical sciences, Indian Association for the Cultivation of Science, Jadavpur, 700032, Kolkata, India
| |
Collapse
|
2
|
Mandal T, Dash J. Ring closing metathesis for the construction of carbazole and indole-fused natural products. Org Biomol Chem 2021; 19:9797-9808. [PMID: 34747427 DOI: 10.1039/d1ob01471d] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
The synthesis and functionalization of carbazole ring systems have received considerable attention in organic synthesis due to their widespread occurrence in biologically active compounds. One of the classical methods for the synthesis of carbazoles involves C-C bond formation of a biaryl amine moiety by oxidizing agents. Over the last few years, various new strategies have evolved for the synthesis of carbazole ring systems. During the past two decades, ring-closing metathesis (RCM) based approaches have been efficiently employed for the synthesis of nitrogen containing heteroaromatic systems including carbazoles. Herein, we discuss the construction of carbazole ring systems using RCM and the application of RCM based methods in the preparation of other indole-fused heterocycles. The application of these methods in the synthesis of carbazole alkaloids and bioactive indole-fused natural products has been discussed to highlight the importance of RCM in total synthesis.
Collapse
Affiliation(s)
- Tirtha Mandal
- School of Chemical Sciences, Indian Association for the Cultivation of Science, Jadavpur, Kolkata-700032, India.
| | - Jyotirmayee Dash
- School of Chemical Sciences, Indian Association for the Cultivation of Science, Jadavpur, Kolkata-700032, India.
| |
Collapse
|
3
|
Lozhkin B, Ward TR. A Close‐to‐Aromatize Approach for the Late‐Stage Functionalization through Ring Closing Metathesis. Helv Chim Acta 2021. [DOI: 10.1002/hlca.202100024] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Boris Lozhkin
- Department of Chemistry University of Basel Building 1096 Mattenstrasse 24a Biopark Rosental CH-4058 Basel Switzerland
| | - Thomas R. Ward
- Department of Chemistry University of Basel Building 1096 Mattenstrasse 24a Biopark Rosental CH-4058 Basel Switzerland
| |
Collapse
|
4
|
Vonteddu NR, Solanke PR, Nayani K, Chandrasekhar S. Cation Triggered Domino Aza-Piancatelli Rearrangement/Friedel-Crafts Alkylation of Indole-Tethered Furfuyl Alcohols to Access Cycloocta[ b]indole Core of Alkaloids. Org Lett 2020; 22:8555-8560. [PMID: 33079545 DOI: 10.1021/acs.orglett.0c03155] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
A domino approach to bridged cycloocta[b]indolone through a cascade of aza-Piancatelli rearrangement/Friedel-Crafts alkylation is developed. This transformation has been realized by reaction of an indole-tethered 2-furylcarbinol and substituted aniline in the presence of a Lewis acid to initiate aza-Piancatelli rearrangement followed by an in situ intramolecular Friedel-Crafts alkylation to access bridged tetracyclic frameworks in one pot.
Collapse
Affiliation(s)
- Nagarjuna Reddy Vonteddu
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India.,Cipla Ltd, MIDC Patalganga, Rasayani, Maharashtra 410220, India
| | - Pooja R Solanke
- Department of Organic Synthesis and Process Chemistry, CSIR-Indian Institute of Chemical Technology, Hyderabad 500007, India.,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Kiranmai Nayani
- Department of Organic Synthesis and Process Chemistry, CSIR-Indian Institute of Chemical Technology, Hyderabad 500007, India
| | - Srivari Chandrasekhar
- Department of Organic Synthesis and Process Chemistry, CSIR-Indian Institute of Chemical Technology, Hyderabad 500007, India.,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| |
Collapse
|
5
|
Tanaka S, Asako T, Ota E, Yamaguchi J. Synthesis of a Pentaarylcarbazole: Installation of Different Aryl Groups on a Benzenoid Moiety. CHEM LETT 2020. [DOI: 10.1246/cl.200302] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Affiliation(s)
- Shuhei Tanaka
- Department of Applied Chemistry, Waseda University, 3-4-1 Ohkubo, Shinjuku, Tokyo 169-8555, Japan
| | - Takashi Asako
- Department of Applied Chemistry, Waseda University, 3-4-1 Ohkubo, Shinjuku, Tokyo 169-8555, Japan
| | - Eisuke Ota
- Department of Applied Chemistry, Waseda University, 3-4-1 Ohkubo, Shinjuku, Tokyo 169-8555, Japan
| | - Junichiro Yamaguchi
- Department of Applied Chemistry, Waseda University, 3-4-1 Ohkubo, Shinjuku, Tokyo 169-8555, Japan
| |
Collapse
|
6
|
Kreibich M, Gemander M, Peter D, Yadav DB, de Koning CB, Fernandes MA, Green IR, van Otterlo WAL, Brückner R. 6,7‐Benzotropolone Syntheses Based on Ring‐Closing Metatheses and Four‐Electron Oxidations. European J Org Chem 2020. [DOI: 10.1002/ejoc.202000256] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Michael Kreibich
- Institut für Organische Chemie Albert‐Ludwigs‐Universität Albertstraße 21 79104 Freiburg Germany
| | - Manuel Gemander
- Institut für Organische Chemie Albert‐Ludwigs‐Universität Albertstraße 21 79104 Freiburg Germany
| | - David Peter
- Institut für Organische Chemie Albert‐Ludwigs‐Universität Albertstraße 21 79104 Freiburg Germany
| | - Dharmendra B. Yadav
- Molecular Sciences Institute School of Chemistry University of the Witwatersrand PO Wits 2050 Johannesburg South Africa
| | - Charles B. de Koning
- Molecular Sciences Institute School of Chemistry University of the Witwatersrand PO Wits 2050 Johannesburg South Africa
| | - Manuel A. Fernandes
- Molecular Sciences Institute School of Chemistry University of the Witwatersrand PO Wits 2050 Johannesburg South Africa
| | - Ivan R. Green
- Department of Chemistry and Polymer Science Stellenbosch University Private Bag X1, Matieland 7602 Stellenbosch Western Cape South Africa
| | - Willem A. L. van Otterlo
- Molecular Sciences Institute School of Chemistry University of the Witwatersrand PO Wits 2050 Johannesburg South Africa
- Department of Chemistry and Polymer Science Stellenbosch University Private Bag X1, Matieland 7602 Stellenbosch Western Cape South Africa
| | - Reinhard Brückner
- Institut für Organische Chemie Albert‐Ludwigs‐Universität Albertstraße 21 79104 Freiburg Germany
| |
Collapse
|
7
|
Dagoneau D, Wang Q, Zhu J. Towards the Sarpagine-Ajmaline-Macroline Family of Indole Alkaloids: Enantioselective Synthesis of an N-Demethyl Alstolactone Diastereomer. Chemistry 2020; 26:4866-4873. [PMID: 32065430 DOI: 10.1002/chem.202000415] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2020] [Revised: 02/14/2020] [Indexed: 12/19/2022]
Abstract
the strategy involving the use of functionalized tetrahydro-6H-cycloocta[b]indol-6-one is reported as a key intermediate for synthesis of members of the sarpagine-ajmaline-macroline family of monoterpene indole alkaloids. The desired tricycle was synthesized through the following key steps: 1) Evans' syn-selective aldolization; 2) Liebeskind-Srogl cross-coupling using the phenylthiol ester of 3-chloropropanoic acid as a surrogate of acrylic thioester for the synthesis of 2,3-disubstituted indoles; and 3) ring-closing metathesis (RCM) for the formation of the eight-membered ring. An N-allylation followed by intramolecular 1,4-addition was planned for synthesis of the vobasine class of natural products. However, attempted cyclizations under a diverse set of conditions involving anionic, radical, and organopalladium/organonickel species failed to produce the bridged ring system. On the other hand, esterification of the pendant primary alcohol function with acetoacetic acid, followed by intramolecular Michael addition, afforded the desired tetracycle with excellent diastereoselectivity. Subsequent functional group manipulation and transannular cyclization of the amino alcohol afforded the N(1)-demethyl-3,5-diepi-alstolactone. We believe that the same synthetic route would afford the alstolactone should the amino alcohol with appropriate stereochemistry be used as the starting material.
Collapse
Affiliation(s)
- Dylan Dagoneau
- Laboratory of Synthesis and Natural Products, Institute of Chemical Sciences and Engineering, École Polytechnique Fédérale de Lausanne, EPFL-SB-ISIC-LSPN, BCH 5304, 1015, Lausanne, Switzerland
| | - Qian Wang
- Laboratory of Synthesis and Natural Products, Institute of Chemical Sciences and Engineering, École Polytechnique Fédérale de Lausanne, EPFL-SB-ISIC-LSPN, BCH 5304, 1015, Lausanne, Switzerland
| | - Jieping Zhu
- Laboratory of Synthesis and Natural Products, Institute of Chemical Sciences and Engineering, École Polytechnique Fédérale de Lausanne, EPFL-SB-ISIC-LSPN, BCH 5304, 1015, Lausanne, Switzerland
| |
Collapse
|
8
|
Okabe A, Harada S, Takeda T, Nishida A. One-Pot Synthesis of Cycloocta[b
]indole Through Formal [5+3] Cycloaddition Using Donor-Acceptor Cyclopropanes. European J Org Chem 2019. [DOI: 10.1002/ejoc.201900610] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
- Akito Okabe
- Graduate School of Pharmaceutical Sciences; Chiba University; 1-8-1 Inohana, Chuo-ku 260-8675 Chiba Japan
| | - Shinji Harada
- Graduate School of Pharmaceutical Sciences; Chiba University; 1-8-1 Inohana, Chuo-ku 260-8675 Chiba Japan
- Molecular Chirality Research Center; Chiba University; 1-33 Yayoi-cho, Inage-ku 263-8522 Chiba Japan
| | - Takuya Takeda
- Graduate School of Pharmaceutical Sciences; Chiba University; 1-8-1 Inohana, Chuo-ku 260-8675 Chiba Japan
| | - Atsushi Nishida
- Graduate School of Pharmaceutical Sciences; Chiba University; 1-8-1 Inohana, Chuo-ku 260-8675 Chiba Japan
- Molecular Chirality Research Center; Chiba University; 1-33 Yayoi-cho, Inage-ku 263-8522 Chiba Japan
| |
Collapse
|
9
|
Hammoud S, Anselmi E, Cherry K, Kizirian JC, Thibonnet J. Synthesis and Reactivity of Oxazinoindolones via Regioselective 6-exo
-dig
Iodolactonization. European J Org Chem 2018. [DOI: 10.1002/ejoc.201801167] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Sokaina Hammoud
- Laboratoire SIMBA; EA7502; Université de Tours; Faculté des Sciences et Techniques, Parc de Grandmont; 32 Av. Monge 37200 Tours France
| | - Elsa Anselmi
- Laboratoire SIMBA; EA7502; Université de Tours; Faculté des Sciences et Techniques, Parc de Grandmont; 32 Av. Monge 37200 Tours France
- Institut Lavoisier de Versailles, UMR 8180, Université de Versailles-St-Quentin; 45 Av. des Etats-Unis 78035 Versailles Cedex France
| | - Khalil Cherry
- Laboratoire Matériaux; Catalyse, Environnement et Méthodes Analytiques (MCEMA); Université Libanaise; Campus Universitaire de Hadath Liban
| | - Jean-Claude Kizirian
- Laboratoire SIMBA; EA7502; Université de Tours; Faculté des Sciences et Techniques, Parc de Grandmont; 32 Av. Monge 37200 Tours France
| | - Jérôme Thibonnet
- Laboratoire SIMBA; EA7502; Université de Tours; Faculté des Sciences et Techniques, Parc de Grandmont; 32 Av. Monge 37200 Tours France
| |
Collapse
|
10
|
Ponra S, Majumdar KC. Brønsted acid-promoted synthesis of common heterocycles and related bio-active and functional molecules. RSC Adv 2016. [DOI: 10.1039/c5ra27069c] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
|
11
|
Dhara K, Mandal T, Das J, Dash J. Synthesis of Carbazole Alkaloids by Ring‐Closing Metathesis and Ring Rearrangement–Aromatization. Angew Chem Int Ed Engl 2015; 54:15831-5. [DOI: 10.1002/anie.201508746] [Citation(s) in RCA: 56] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2015] [Indexed: 01/24/2023]
Affiliation(s)
- Kalyan Dhara
- Department of Organic Chemistry, Indian Association for the Cultivation of Science, Jadavpur, Kolkata‐700032 (India)
| | - Tirtha Mandal
- Department of Organic Chemistry, Indian Association for the Cultivation of Science, Jadavpur, Kolkata‐700032 (India)
| | - Joydeb Das
- Department of Organic Chemistry, Indian Association for the Cultivation of Science, Jadavpur, Kolkata‐700032 (India)
| | - Jyotirmayee Dash
- Department of Organic Chemistry, Indian Association for the Cultivation of Science, Jadavpur, Kolkata‐700032 (India)
| |
Collapse
|
12
|
Dhara K, Mandal T, Das J, Dash J. Synthesis of Carbazole Alkaloids by Ring‐Closing Metathesis and Ring Rearrangement–Aromatization. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201508746] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Kalyan Dhara
- Department of Organic Chemistry, Indian Association for the Cultivation of Science, Jadavpur, Kolkata‐700032 (India)
| | - Tirtha Mandal
- Department of Organic Chemistry, Indian Association for the Cultivation of Science, Jadavpur, Kolkata‐700032 (India)
| | - Joydeb Das
- Department of Organic Chemistry, Indian Association for the Cultivation of Science, Jadavpur, Kolkata‐700032 (India)
| | - Jyotirmayee Dash
- Department of Organic Chemistry, Indian Association for the Cultivation of Science, Jadavpur, Kolkata‐700032 (India)
| |
Collapse
|
13
|
Chakraborty A, Jyothi K, Sinha S. Palladium-catalyzed synthesis of 2-allylindole and 2-allylbenzofuran derivatives from 2-((trimethylsilyl)ethynyl)arenes. Tetrahedron Lett 2014. [DOI: 10.1016/j.tetlet.2014.10.049] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
|
14
|
Hayashi K, Yoshida K, Yanagisawa A. Synthesis of 4-Vinylindoles Using Ruthenium-Catalyzed Ring-Closing Enyne Metathesis. J Org Chem 2013; 78:3464-9. [DOI: 10.1021/jo400099x] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Affiliation(s)
- Kazushi Hayashi
- Department
of Chemistry, Graduate School of Science, Chiba University, Yayoi-cho, Inage-ku, Chiba 263-8522, Japan
| | - Kazuhiro Yoshida
- Department
of Chemistry, Graduate School of Science, Chiba University, Yayoi-cho, Inage-ku, Chiba 263-8522, Japan
| | - Akira Yanagisawa
- Department
of Chemistry, Graduate School of Science, Chiba University, Yayoi-cho, Inage-ku, Chiba 263-8522, Japan
| |
Collapse
|
15
|
|
16
|
Yoshida K, Hayashi K, Yanagisawa A. Construction of Carbocyclic Ring of Indoles Using Ruthenium-Catalyzed Ring-Closing Olefin Metathesis. Org Lett 2011; 13:4762-5. [DOI: 10.1021/ol201510u] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Kazuhiro Yoshida
- Department of Chemistry, Graduate School of Science, Chiba University, Yayoi-cho, Inage-ku, Chiba 263-8522, Japan
| | - Kazushi Hayashi
- Department of Chemistry, Graduate School of Science, Chiba University, Yayoi-cho, Inage-ku, Chiba 263-8522, Japan
| | - Akira Yanagisawa
- Department of Chemistry, Graduate School of Science, Chiba University, Yayoi-cho, Inage-ku, Chiba 263-8522, Japan
| |
Collapse
|
17
|
Nishiyama T, Choshi T, Kitano K, Hibino S. New synthesis of carbazole-1,4-quinone using a tandem ring-closing metathesis and dehydrogenation reaction under oxygen atmosphere, and its application to the synthesis of murrayaquinone A. Tetrahedron Lett 2011. [DOI: 10.1016/j.tetlet.2011.05.066] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
|
18
|
Biswas S, Singh V, Batra S. Morita–Baylis–Hillman reaction of indole-2-carboxaldehyde: new vistas for indole-annulated systems. Tetrahedron 2010. [DOI: 10.1016/j.tet.2010.07.078] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
|
19
|
Bennasar ML, Zulaica E, Solé D, Roca T, García-Díaz D, Alonso S. Total Synthesis of the Bridged Indole Alkaloid Apparicine. J Org Chem 2009; 74:8359-68. [DOI: 10.1021/jo901986v] [Citation(s) in RCA: 60] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- M.-Lluïsa Bennasar
- Laboratory of Organic Chemistry, Faculty of Pharmacy, and Institut de Biomedicina (IBUB), University of Barcelona, Barcelona 08028, Spain
| | - Ester Zulaica
- Laboratory of Organic Chemistry, Faculty of Pharmacy, and Institut de Biomedicina (IBUB), University of Barcelona, Barcelona 08028, Spain
| | - Daniel Solé
- Laboratory of Organic Chemistry, Faculty of Pharmacy, and Institut de Biomedicina (IBUB), University of Barcelona, Barcelona 08028, Spain
| | - Tomàs Roca
- Laboratory of Organic Chemistry, Faculty of Pharmacy, and Institut de Biomedicina (IBUB), University of Barcelona, Barcelona 08028, Spain
| | - Davinia García-Díaz
- Laboratory of Organic Chemistry, Faculty of Pharmacy, and Institut de Biomedicina (IBUB), University of Barcelona, Barcelona 08028, Spain
| | - Sandra Alonso
- Laboratory of Organic Chemistry, Faculty of Pharmacy, and Institut de Biomedicina (IBUB), University of Barcelona, Barcelona 08028, Spain
| |
Collapse
|
20
|
van Otterlo WAL, de Koning CB. Metathesis in the synthesis of aromatic compounds. Chem Rev 2009; 109:3743-82. [PMID: 19618929 DOI: 10.1021/cr900178p] [Citation(s) in RCA: 247] [Impact Index Per Article: 16.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Willem A L van Otterlo
- Molecular Sciences Institute, School of Chemistry, University of the Witwatersrand, PO Wits 2050, South Africa.
| | | |
Collapse
|
21
|
Alcaide B, Almendros P, Luna A. Grubbs' ruthenium-carbenes beyond the metathesis reaction: less conventional non-metathetic utility. Chem Rev 2009; 109:3817-58. [PMID: 19572654 DOI: 10.1021/cr9001512] [Citation(s) in RCA: 285] [Impact Index Per Article: 19.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Benito Alcaide
- Departamento de Química Orgánica I, Facultad de Química, Universidad Complutense de Madrid, 28040 Madrid, Spain.
| | | | | |
Collapse
|
22
|
Minville J, Poulin J, Dufresne C, Sturino CF. A general synthesis of quinolinones and benzothiazine 1,1-dioxides via ring closing metathesis. Tetrahedron Lett 2008. [DOI: 10.1016/j.tetlet.2008.03.144] [Citation(s) in RCA: 45] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
|
23
|
Abid M, Teixeira L, Török B. Triflic acid controlled successive annelation of aromatic sulfonamides: An efficient one-pot synthesis of N-sulfonyl pyrroles, indoles and carbazoles. Tetrahedron Lett 2007; 48:4047-4050. [PMID: 19629194 PMCID: PMC2714272 DOI: 10.1016/j.tetlet.2007.04.021] [Citation(s) in RCA: 43] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
A novel one-pot synthesis of N-substituted heterocycles via successive cyclization/annelation starting from primary sulfonamides is described. This process leads directly to N-sulfonyl pyrroles, indoles and carbazoles. The selection of appropriate reactant/triflic acid ratio successfully controls the formation of the desired product.
Collapse
Affiliation(s)
- Mohammed Abid
- Department of Chemistry, University of Massachusetts Boston, 100 Morrissey Blvd., Boston, MA 02125-3393, USA
| | - Liliana Teixeira
- Department of Chemistry, University of Massachusetts Boston, 100 Morrissey Blvd., Boston, MA 02125-3393, USA
| | - Béla Török
- Department of Chemistry, University of Massachusetts Boston, 100 Morrissey Blvd., Boston, MA 02125-3393, USA
| |
Collapse
|
24
|
|
25
|
Abstract
[Structure: see text] An approach to the core structure of the microtubule-targeting agent welwistatin is described. The approach utilizes the type 2 intramolecular Diels-Alder reaction, with indole serving as the tether between diene and dienophile, to form the natural product's characteristic bicyclo[4.3.1]decane skeleton.
Collapse
Affiliation(s)
- Ryan Lauchli
- Department of Chemistry, 1102 Natural Sciences II, University of California, Irvine, Irvine, California 92697-2025, USA
| | | |
Collapse
|
26
|
|
27
|
Herndon JW. The chemistry of the carbon–transition metal double and triple bond: Annual survey covering the year 2004. Coord Chem Rev 2006. [DOI: 10.1016/j.ccr.2005.10.020] [Citation(s) in RCA: 53] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
|
28
|
Preparation of RCM substrates for azepinoindole synthesis: reductive amination versus tetrahydro-γ-carboline formation. Tetrahedron Lett 2005. [DOI: 10.1016/j.tetlet.2005.09.109] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
|