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Yamazaki K, Okuda Y, Takaya A, Nemoto T. Total Synthesis of Dragmacidins G and H. Org Lett 2024; 26:670-675. [PMID: 38206835 DOI: 10.1021/acs.orglett.3c04039] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2024]
Abstract
The total synthesis of dragmacidins G and H was achieved for the first time by employing nucleophilic aromatic substitution and site-selective cross-coupling reactions using appropriately functionalized pyrazines as substrates. The evaluation of antibacterial activities of dragmacidin G, dragmacidin H, and synthetic analogues against Staphylococcus aureus and the efflux pump-deficient Salmonella Typhimurium revealed that the presence of a Br group on the indole ring adjacent to the sulfide unit was important for increasing antibacterial activities.
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Affiliation(s)
- Keita Yamazaki
- Graduate School of Pharmaceutical Sciences, Chiba University, 1-8-1, Inohana, Chuo-ku, Chiba 260-8675, Japan
| | - Yuma Okuda
- Graduate School of Pharmaceutical Sciences, Chiba University, 1-8-1, Inohana, Chuo-ku, Chiba 260-8675, Japan
| | - Akiko Takaya
- Graduate School of Pharmaceutical Sciences, Chiba University, 1-8-1, Inohana, Chuo-ku, Chiba 260-8675, Japan
| | - Tetsuhiro Nemoto
- Graduate School of Pharmaceutical Sciences, Chiba University, 1-8-1, Inohana, Chuo-ku, Chiba 260-8675, Japan
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2
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Choi D, Takahashi N, Maruoka H, Harada S, Nastke A, Gröger H, Nemoto T. Synthetic Study of Dragmacidin E: Enantioselective Construction of the Seven-Membered Ring-Fused Indole Skeleton with Contiguous Stereocenters. J Org Chem 2023. [PMID: 36701491 DOI: 10.1021/acs.joc.2c02216] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
We developed an enantioselective synthetic method of constructing a seven-membered ring-fused indole skeleton with contiguous stereocenters for the synthesis of dragmacidin E. Introduction of chirality at the benzylic position was achieved by Ir-catalyzed asymmetric hydrogenation. After construction of the tricyclic molecular framework using Pd-catalyzed cascade cyclization, the tetrasubstituted carbon center was created using the Ag nitrene-mediated C-H amination reaction. The developed method provided access to the functionalized seven-membered ring-fused indole skeleton with a hydroxymethyl branch in the tetrasubstituted carbon.
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Affiliation(s)
- Dongil Choi
- Graduate School of Pharmaceutical Sciences, Chiba University, 1-8-1, Inohana, Chuo-ku, Chiba 260-8675, Japan
| | - Noa Takahashi
- Graduate School of Pharmaceutical Sciences, Chiba University, 1-8-1, Inohana, Chuo-ku, Chiba 260-8675, Japan
| | - Haruka Maruoka
- Graduate School of Pharmaceutical Sciences, Chiba University, 1-8-1, Inohana, Chuo-ku, Chiba 260-8675, Japan
| | - Shingo Harada
- Graduate School of Pharmaceutical Sciences, Chiba University, 1-8-1, Inohana, Chuo-ku, Chiba 260-8675, Japan
| | - Alina Nastke
- Faculty of Chemistry, Bielefeld University, Universitätsstraße 25, 33615 Bielefeld, Germany
| | - Harald Gröger
- Faculty of Chemistry, Bielefeld University, Universitätsstraße 25, 33615 Bielefeld, Germany
| | - Tetsuhiro Nemoto
- Graduate School of Pharmaceutical Sciences, Chiba University, 1-8-1, Inohana, Chuo-ku, Chiba 260-8675, Japan
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3
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Ghosh T, Biswas D, Bhakta S. Palladium-Catalyzed Synthesis of Fused Carbo- and Heterocycles: Recent Advances. Chem Asian J 2022; 17:e202200725. [PMID: 36065137 DOI: 10.1002/asia.202200725] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2022] [Revised: 09/03/2022] [Indexed: 11/10/2022]
Abstract
The use of palladium catalysts in fused ring synthesis has been increasingly noteworthy in recent years in organic synthesis. It has a lot of potential compared to other transition metal catalysts, because of its one-of-a-kind feature that makes them more widely applicable in a variety of disciplines application. Palladium is important in a variety of Heck processes, including intramolecular, intermolecular, and reductive Heck reactions, which produce diverse carbocycles and heterocycles of biological importance. Under optimal reaction conditions, carbocyclization or heterocyclization occurs, resulting in the production of numerous structural building blocks of naturally occurring compounds. Beside intramolecular Heck-type reactions, cycloaddition, cycloalkylation, oxidative coupling, C-H functionalization, cross-coupling reactions, and carboamidation reactions have also been employed extensively to access fused carbo- and heterocycles of immense biological importance. This review article provides a well-summarized discussion (since 2001) on fused carbo- and heterocycle ring synthesis using palladium catalysts, overviewing their applications, and mechanistic insights.
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Affiliation(s)
- Tapas Ghosh
- Maulana Abul Kalam Azad University of Technology, Applied Sciences, Simhat, Haringhata, 741249, Haringhata, INDIA
| | - Diptam Biswas
- Maulana Abul Kalam Azad University of Technology, Applied Chemistry, INDIA
| | - Sayantika Bhakta
- Maulana Abul Kalam Azad University of Technology, Applied Chemistry, INDIA
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4
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Savic VM, Jovanovic MD, Petkovic MR. Polycyclic Compounds from Allenes via Palladium-Mediated Intramolecular Carbopalladation/Nucleophilic Substitution Cascade Processes. SYNTHESIS-STUTTGART 2021. [DOI: 10.1055/s-0040-1705994] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
AbstractIn recent decades transition metals have made a substantial contribution to the development of novel synthetic processes, with palladium catalysis being, arguably, at the forefront of this research. The efficiency of Pd-promoted C–C or C–X bond formation along with a variety of other transformations renders this metal an indispensable tool in synthetic organic chemistry. Of particular interest are Pd-catalysed multicomponent cascade reactions as they often allow the creation of complex structures from relatively simple starting materials, mimicking in this sense biochemical processes. Allenes as partners in Pd-promoted cascades involving carbopalladation/nucleophilic substitutions have been extensively studied in recent years. Many tactical variants have been explored showing a high level of efficiency and chemoselectivity with predictable outcomes. This short review is focused on intramolecular processes of this type because they provide access to relatively complex polycyclic products, possessing structural features often found in natural products and related compounds. Various approaches are discussed with the intention to demonstrate their applicability and synthetic potential.1 Introduction2 Intramolecular Palladium-Promoted Cascades of Allenes3 Class I Cyclisations4 Class II Cyclisations5 Class III Cyclisations6 Class IV Cyclisations7 Conclusion
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5
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Holman KR, Stanko AM, Reisman SE. Palladium-catalyzed cascade cyclizations involving C–C and C–X bond formation: strategic applications in natural product synthesis. Chem Soc Rev 2021; 50:7891-7908. [DOI: 10.1039/d0cs01385d] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
This tutorial review highlights the use of palladium-catalyzed cascade cyclizations in natural product synthesis, focusing on cascades that construct multiple rings and form both C–C and C–X (X = O, N) bonds in a single synthetic operation.
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Affiliation(s)
- K. R. Holman
- The Warren and Katharine Schlinger Laboratory of Chemistry and Chemical Engineering
- California Institute of Technology
- Pasadena
- USA
| | - A. M. Stanko
- The Warren and Katharine Schlinger Laboratory of Chemistry and Chemical Engineering
- California Institute of Technology
- Pasadena
- USA
| | - S. E. Reisman
- The Warren and Katharine Schlinger Laboratory of Chemistry and Chemical Engineering
- California Institute of Technology
- Pasadena
- USA
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6
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Cheng C, Zuo X, Tu D, Wan B, Zhang Y. Synthesis of 3,4-Fused Tricyclic Indoles through Cascade Carbopalladation and C-H Amination: Development and Total Synthesis of Rucaparib. Org Lett 2020; 22:4985-4989. [PMID: 32610935 DOI: 10.1021/acs.orglett.0c01513] [Citation(s) in RCA: 31] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
3,4-Fused tricyclic indole scaffolds are ubiquitous in bioactive natural products and pharmaceuticals. A new protocol for the synthesis of 3,4-fused tricyclic indoles has been developed through cascade carbopalladation and C-H amination with N,N-di-tert-butyldiaziridinone. The protocol allows access to a range of 3,4-fused tricyclic indoles, including those containing various linkers and fused with medium-sized rings. Rucaparib can be synthesized via this reaction, providing an advantageous synthetic method for the FDA-approved cancer medicine.
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Affiliation(s)
- Cang Cheng
- School of Chemical Science and Engineering, Shanghai Key Laboratory of Chemical Assessment and Sustainability, Tongji University 1239 Siping Road, Shanghai 200092, China
| | - Xiang Zuo
- School of Chemical Science and Engineering, Shanghai Key Laboratory of Chemical Assessment and Sustainability, Tongji University 1239 Siping Road, Shanghai 200092, China
| | - Dongdong Tu
- School of Chemical Science and Engineering, Shanghai Key Laboratory of Chemical Assessment and Sustainability, Tongji University 1239 Siping Road, Shanghai 200092, China
| | - Bin Wan
- School of Chemical Science and Engineering, Shanghai Key Laboratory of Chemical Assessment and Sustainability, Tongji University 1239 Siping Road, Shanghai 200092, China
| | - Yanghui Zhang
- School of Chemical Science and Engineering, Shanghai Key Laboratory of Chemical Assessment and Sustainability, Tongji University 1239 Siping Road, Shanghai 200092, China
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Nakajima M, Kondo Y, Nakano SI, Adachi Y, Choi D, Franzén R, Nemoto T. Radical cascade cyclization for synthesizing 3,4-fused tricyclic benzofuran derivatives. Tetrahedron Lett 2020. [DOI: 10.1016/j.tetlet.2020.151754] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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8
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Connon R, Guiry PJ. Recent advances in the development of one-pot/multistep syntheses of 3,4-annulated indoles. Tetrahedron Lett 2020. [DOI: 10.1016/j.tetlet.2020.151696] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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9
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Adouama C, Budén ME, Guerra WD, Puiatti M, Joseph B, Barolo SM, Rossi RA, Médebielle M. Room-Temperature and Transition-Metal-Free Intramolecular α-Arylation of Ketones: A Mild Access to Tetracyclic Indoles and 7-Azaindoles. Org Lett 2019; 21:320-324. [PMID: 30576154 DOI: 10.1021/acs.orglett.8b03831] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
A novel approach for the synthesis of tetracyclic indoles and 7-azaindoles is reported. The strategy involves four steps, with a fast rt intramolecular α-arylation of ketones as key step. The reaction was inspected synthetically to achieve the synthesis of 11 novel tetracyclic structures with moderate to very good yields (39-85%). Theoretical combined with experimental studies led us to propose a probable polar mechanism (concerted SNAr).
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Affiliation(s)
- Chérif Adouama
- Univ Lyon, Université Lyon 1 , CNRS, INSA, CPE-Lyon, ICBMS, UMR 5246, 1 rue Victor Grignard , 69622 Villeurbanne Cedex , France
| | - María E Budén
- INFIQC, Facultad de Ciencias Químicas , Universidad Nacional de Córdoba , X5000HUA Córdoba , Argentina
| | - Walter D Guerra
- INFIQC, Facultad de Ciencias Químicas , Universidad Nacional de Córdoba , X5000HUA Córdoba , Argentina
| | - Marcelo Puiatti
- INFIQC, Facultad de Ciencias Químicas , Universidad Nacional de Córdoba , X5000HUA Córdoba , Argentina
| | - Benoît Joseph
- Univ Lyon, Université Lyon 1 , CNRS, INSA, CPE-Lyon, ICBMS, UMR 5246, 1 rue Victor Grignard , 69622 Villeurbanne Cedex , France
| | - Silvia M Barolo
- INFIQC, Facultad de Ciencias Químicas , Universidad Nacional de Córdoba , X5000HUA Córdoba , Argentina
| | - Roberto A Rossi
- INFIQC, Facultad de Ciencias Químicas , Universidad Nacional de Córdoba , X5000HUA Córdoba , Argentina
| | - Maurice Médebielle
- Univ Lyon, Université Lyon 1 , CNRS, INSA, CPE-Lyon, ICBMS, UMR 5246, 1 rue Victor Grignard , 69622 Villeurbanne Cedex , France
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Affiliation(s)
- Jasper Biemolt
- Department of Chemistry & Pharmaceutical Sciences and Amsterdam; Institute for Molecules; Medicines & Systems; Vrije Universiteit Amsterdam; De Boelelaan 1108 1081HZ Amsterdam The Netherlands
| | - Eelco Ruijter
- Department of Chemistry & Pharmaceutical Sciences and Amsterdam; Institute for Molecules; Medicines & Systems; Vrije Universiteit Amsterdam; De Boelelaan 1108 1081HZ Amsterdam The Netherlands
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11
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Nemoto T, Harada S, Nakajima M. Synthetic Methods for 3,4-Fused Tricyclic Indoles via Indole Ring Formation. ASIAN J ORG CHEM 2018. [DOI: 10.1002/ajoc.201800336] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Tetsuhiro Nemoto
- Graduate School of Pharmaceutical Sciences; Chiba University; I1-8-1, Inohana, Chuo-ku Chiba 260-8675 Japan
- Molecular Chirality Research Center; Chiba University; 1-33, Yayoi-cho, Inage-ku Chiba 263-8522, Japan
| | - Shingo Harada
- Graduate School of Pharmaceutical Sciences; Chiba University; I1-8-1, Inohana, Chuo-ku Chiba 260-8675 Japan
| | - Masaya Nakajima
- Graduate School of Pharmaceutical Sciences; Chiba University; I1-8-1, Inohana, Chuo-ku Chiba 260-8675 Japan
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12
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Nemoto T. Synthesis of 3,4‐Fused Tricyclic Indoles Using 3‐Alkylidene Indolines as Versatile Precursors. CHEM REC 2018; 19:320-332. [DOI: 10.1002/tcr.201800043] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2018] [Accepted: 06/06/2018] [Indexed: 12/31/2022]
Affiliation(s)
- Tetsuhiro Nemoto
- Graduate School of Pharmaceutical SciencesChiba University 1-8-1, Inohana, Chuo-ku Chiba 260-8675 Japan
- Molecular Chirality Research CenterChiba University 1-33, Yayoi-cho, Inage-ku Chiba 263-8522 Japan
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13
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Nakano SI, Hamada Y, Nemoto T. Enantioselective formal synthesis of (−)-aurantioclavine using Pd-catalyzed cascade cyclization and organocatalytic asymmetric aziridination. Tetrahedron Lett 2018. [DOI: 10.1016/j.tetlet.2018.01.033] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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