1
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Yang Z, Arnoux M, Hazelard D, Hughes OR, Nabarro J, Whitwood AC, Fascione MA, Spicer CD, Compain P, Unsworth WP. Expanding the scope of the successive ring expansion strategy for macrocycle and medium-sized ring synthesis: unreactive and reactive lactams. Org Biomol Chem 2024; 22:2985-2991. [PMID: 38526035 DOI: 10.1039/d4ob00285g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/26/2024]
Abstract
New methods are described that expand the scope of the Successive Ring Expansion (SuRE) with respect to synthetically challenging lactams. A protocol has been developed for use with 'unreactive' lactams, enabling SuRE reactions to be performed on subsrates that fail under previously established conditions. Ring expansion is also demonstarted on 'reactive' lactams derived from iminosugars for the first time. The new SuRE methods were used to prepare a diverse array of medium-sized and macrocyclic lactams and lactones, which were evaluted in an anti-bacterial assay against E. coli BW25113WT.
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Affiliation(s)
- Zhongzhen Yang
- Department of Chemistry, University of York, Heslington, York, YO10 5DD, UK.
- Department of Pharmacy, West China Hospital, Sichuan University, Chengdu 610041, China
| | - Marion Arnoux
- Laboratoire d'Innovation Moléculaire et Applications (LIMA), Univ. de Strasbourg, Univ. de Haute-Alsace, CNRS (UMR 7042), Equipe de Synthèse Organique et Molécules Bioactives (SYBIO), ECPM, 25 Rue Becquerel, 67000 Strasbourg, France.
| | - Damien Hazelard
- Laboratoire d'Innovation Moléculaire et Applications (LIMA), Univ. de Strasbourg, Univ. de Haute-Alsace, CNRS (UMR 7042), Equipe de Synthèse Organique et Molécules Bioactives (SYBIO), ECPM, 25 Rue Becquerel, 67000 Strasbourg, France.
| | - Owen R Hughes
- Department of Chemistry, University of York, Heslington, York, YO10 5DD, UK.
- York Biomedical Research Institute, University of York, Heslington, YO10 5DD, UK
| | - Joe Nabarro
- Department of Chemistry, University of York, Heslington, York, YO10 5DD, UK.
- York Biomedical Research Institute, University of York, Heslington, YO10 5DD, UK
| | - Adrian C Whitwood
- Department of Chemistry, University of York, Heslington, York, YO10 5DD, UK.
| | - Martin A Fascione
- Department of Chemistry, University of York, Heslington, York, YO10 5DD, UK.
- York Biomedical Research Institute, University of York, Heslington, YO10 5DD, UK
| | - Christopher D Spicer
- Department of Chemistry, University of York, Heslington, York, YO10 5DD, UK.
- York Biomedical Research Institute, University of York, Heslington, YO10 5DD, UK
| | - Philippe Compain
- Laboratoire d'Innovation Moléculaire et Applications (LIMA), Univ. de Strasbourg, Univ. de Haute-Alsace, CNRS (UMR 7042), Equipe de Synthèse Organique et Molécules Bioactives (SYBIO), ECPM, 25 Rue Becquerel, 67000 Strasbourg, France.
| | - William P Unsworth
- Department of Chemistry, University of York, Heslington, York, YO10 5DD, UK.
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2
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Orukotan WE, Palate KY, Pogrányi B, Bobinski P, Epton RG, Duff L, Whitwood AC, Grogan G, Lynam JM, Unsworth WP. Divergent Cascade Ring-Expansion Reactions of Acryloyl Imides. Chemistry 2024; 30:e202303270. [PMID: 37987097 DOI: 10.1002/chem.202303270] [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: 10/09/2023] [Revised: 11/16/2023] [Accepted: 11/21/2023] [Indexed: 11/22/2023]
Abstract
Macrocyclic and medium-sized ring ketones, lactones and lactams can all be made from common acryloyl imide starting materials through divergent, one-pot cascade ring-expansion reactions. Following either conjugate addition with an amine or nitromethane, or osmium(VIII)-catalysed dihydoxylation, rearrangement through a four-atom ring expansion takes place spontaneously to form the ring expanded products. A second ring expansion can also be performed following a second iteration of imide formation and alkene functionalisation/ring expansion. In the dihydroxylation series, three- or four-atom ring expansion can be performed selectively, depending on whether the reaction is under kinetic or thermodynamic control.
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Affiliation(s)
- Will E Orukotan
- Department of Chemistry, University of York, York, YO10 5DD, UK
| | | | - Balázs Pogrányi
- Department of Chemistry, University of York, York, YO10 5DD, UK
| | - Philipp Bobinski
- Organisch-Chemisches Institut, Universität Heidelberg, Im Neuenheimer Feld 270, 69120, Heidelberg, Germany
| | - Ryan G Epton
- Department of Chemistry, University of York, York, YO10 5DD, UK
| | - Lee Duff
- Department of Chemistry, University of York, York, YO10 5DD, UK
| | | | - Gideon Grogan
- Department of Chemistry, University of York, York, YO10 5DD, UK
| | - Jason M Lynam
- Department of Chemistry, University of York, York, YO10 5DD, UK
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3
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Wang Z, Yin L, Wang M, Zhu Y, Yang Y, Cheng L, Wang C, Li Y. Selective C-O Bond Forming Reactions at Indole-C2-Position toward Polycyclic Indolone or Indolinone Derivatives Tethered with Medium-Sized Rings. Org Lett 2022; 24:6272-6276. [PMID: 35980745 DOI: 10.1021/acs.orglett.2c02398] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A methodology involving the chemoselective synthesis of tetracyclic [1,3]oxazino[3,2-a]indol-4-one or tetracyclic [1,3]oxazino[3,2-a]indoline-4-one tethered with a medium-sized ring by cross dehydrogenative coupling (CDC) or nucleophilic addition (NA) reaction has been developed. [1,3]Oxazino[3,2-a]indol-4-one compounds fused with a medium-sized ring were constructed through a CDC reaction in the presence of I2 and K2CO3. Whereas, [1,3]oxazino[3,2-a]indoline-4-ones tethered with a medium-sized ring were obtained with a TfOH system by NA reaction.
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Affiliation(s)
- Zongkang Wang
- School of Chemistry and Molecular Engineering, East China Normal University, 500 Dongchuan Road, Shanghai, 200241, China
| | - Liqiang Yin
- School of Chemistry and Molecular Engineering, East China Normal University, 500 Dongchuan Road, Shanghai, 200241, China
| | - Mengdan Wang
- School of Chemistry and Molecular Engineering, East China Normal University, 500 Dongchuan Road, Shanghai, 200241, China
| | - Yilin Zhu
- School of Chemistry and Molecular Engineering, East China Normal University, 500 Dongchuan Road, Shanghai, 200241, China
| | - Yajie Yang
- School of Chemistry and Molecular Engineering, East China Normal University, 500 Dongchuan Road, Shanghai, 200241, China
| | - Lu Cheng
- School of Chemistry and Molecular Engineering, East China Normal University, 500 Dongchuan Road, Shanghai, 200241, China
| | - Chengyu Wang
- School of Chemistry and Chemical Engineering, Linyi University, Shuangling Road, Linyi, Shandong 276000, China
| | - Yanzhong Li
- School of Chemistry and Molecular Engineering, East China Normal University, 500 Dongchuan Road, Shanghai, 200241, China.,Key Laboratory of Polar Materials and Devices, Ministry of Education, East China Normal University, Shanghai 200062, China
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4
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Kang Q, Mu Y, Yuan Y, Wang Y, Jin S, Wang C, Li Y. Diastereoselective Synthesis of Bicyclo[3.3.0]octenones by Copper-Catalyzed Transannular Ring-Closing Reaction. Org Lett 2022; 24:5924-5928. [PMID: 35930708 DOI: 10.1021/acs.orglett.2c02163] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
A novel and efficient copper-catalyzed transannular ring-closing reaction of eight-membered rings has been developed that provides a straightforward way to synthesize bicyclo[3.3.0]octane derivatives in good yields. Mechanistic studies revealed that the reaction pathway might involve chlorination followed by the Kornblum reaction. Readily accessible starting materials and good functional group tolerance make this procedure attractive.
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Affiliation(s)
- Qiongwen Kang
- School of Chemistry and Molecular Engineering, East China Normal University, 500 Dongchuan Road, Shanghai 200241, China
| | - Yuanyang Mu
- School of Chemistry and Molecular Engineering, East China Normal University, 500 Dongchuan Road, Shanghai 200241, China
| | - Yang Yuan
- School of Chemistry and Molecular Engineering, East China Normal University, 500 Dongchuan Road, Shanghai 200241, China
| | - Ye Wang
- School of Chemistry and Molecular Engineering, East China Normal University, 500 Dongchuan Road, Shanghai 200241, China
| | - Shuxin Jin
- School of Chemistry and Molecular Engineering, East China Normal University, 500 Dongchuan Road, Shanghai 200241, China
| | - Chengyu Wang
- School of Chemistry and Chemical Engineering, Linyi University, Shuangling Road, Linyi, Shandong 276000, China
| | - Yanzhong Li
- School of Chemistry and Molecular Engineering, East China Normal University, 500 Dongchuan Road, Shanghai 200241, China
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5
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Palate KY, Yang Z, Whitwood AC, Unsworth WP. Synthesis of medium-ring lactams and macrocyclic peptide mimetics via conjugate addition/ring expansion cascade reactions. RSC Chem Biol 2022; 3:334-340. [PMID: 35359493 PMCID: PMC8905531 DOI: 10.1039/d1cb00245g] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2021] [Accepted: 02/08/2022] [Indexed: 11/30/2022] Open
Abstract
A novel conjugate addition/ring expansion (CARE) cascade reaction sequence is reported that enables medium-sized ring and macrocyclic bis-lactams to be prepared from primary amines and cyclic imides. The reactions are simple to perform, generally high yielding, and very broad in scope, especially with respect to the primary amine component. CARE reactions can also be performed iteratively, enabling β-peptoid-based macrocyclic peptide mimetics to be ‘grown’ via well controlled, sequential 4-atom ring expansion reactions, with the incorporation of varied functionalised amines during each iteration. A conjugate addition/ring expansion (CARE) cascade reaction sequence is reported that enables medium-sized ring and macrocyclic bis-lactams to be prepared from primary amines and cyclic imides.![]()
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Affiliation(s)
- Kleopas Y Palate
- Department of Chemistry, University of York, Heslington York YO10 5DD UK
| | - Zhongzhen Yang
- Department of Chemistry, University of York, Heslington York YO10 5DD UK
| | - Adrian C Whitwood
- Department of Chemistry, University of York, Heslington York YO10 5DD UK
| | - William P Unsworth
- Department of Chemistry, University of York, Heslington York YO10 5DD UK
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6
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Gu Y, Yang Y, Wang Y, Wang Z, Zhu Y, Li Y. Transition-metal-free insertion of alkynes into the C–C σ-bond of cyclic β-keto sulfones: an atom-economical way to medium-size-ring sulfonyl derivatives. NEW J CHEM 2022. [DOI: 10.1039/d2nj01197b] [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
A novel base-promoted and highly efficient strategy for the preparation of medium-size-ring sulfonyl derivatives has been developed.
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Affiliation(s)
- Yingge Gu
- School of Chemistry and Molecular Engineering, East China Normal University, 500 Dongchuan Road, 200241, Shanghai, China
| | - Yajie Yang
- School of Chemistry and Molecular Engineering, East China Normal University, 500 Dongchuan Road, 200241, Shanghai, China
| | - Ye Wang
- School of Chemistry and Molecular Engineering, East China Normal University, 500 Dongchuan Road, 200241, Shanghai, China
| | - Zongkang Wang
- School of Chemistry and Molecular Engineering, East China Normal University, 500 Dongchuan Road, 200241, Shanghai, China
| | - Yilin Zhu
- School of Chemistry and Molecular Engineering, East China Normal University, 500 Dongchuan Road, 200241, Shanghai, China
| | - Yanzhong Li
- School of Chemistry and Molecular Engineering, East China Normal University, 500 Dongchuan Road, 200241, Shanghai, China
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7
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Mu Y, Yao Q, Yin L, Fu S, Wang M, Yuan Y, Kong L, Li Y. Atom-Economic Synthesis of Highly Functionalized Bridged Ring Systems Initiated by Ring Expansion of Indene-1,3-dione. J Org Chem 2021; 86:6755-6764. [PMID: 33847128 DOI: 10.1021/acs.joc.1c00487] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
An atom economic procedure for the regioselective synthesis of bridged seven-membered-ring compounds from simple reactants such as ynones and indene-1,3-dione has been developed. This process was realized through the one-pot reactions of ring-expansion of indene-1,3-dione with alkynyl ketones and successive formal [4+2] cycloaddition. The Michael addition reaction is the key for the regioselectivity of the formal [4+2] cycloaddition.
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Affiliation(s)
- Yuanyang Mu
- School of Chemistry and Molecular Engineering, East China Normal University, 500 Dongchuan Road, Shanghai 200241, China
| | - Qiyi Yao
- School of Chemistry and Molecular Engineering, East China Normal University, 500 Dongchuan Road, Shanghai 200241, China
| | - Liqiang Yin
- School of Chemistry and Molecular Engineering, East China Normal University, 500 Dongchuan Road, Shanghai 200241, China
| | - Siyi Fu
- School of Chemistry and Molecular Engineering, East China Normal University, 500 Dongchuan Road, Shanghai 200241, China
| | - Mengdan Wang
- School of Chemistry and Molecular Engineering, East China Normal University, 500 Dongchuan Road, Shanghai 200241, China
| | - Yang Yuan
- School of Chemistry and Molecular Engineering, East China Normal University, 500 Dongchuan Road, Shanghai 200241, China
| | - Lingkai Kong
- School of Chemistry and Chemical Engineering, Linyi University, Shuangling Road, Linyi, Shandong 276000, China
| | - Yanzhong Li
- School of Chemistry and Molecular Engineering, East China Normal University, 500 Dongchuan Road, Shanghai 200241, China
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8
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Cobalt-catalyzed C H activation of N-carbamoyl indoles or benzamides with maleimides: Synthesis of imidazo[1,5-a]indole- or isoindolone-incorporated spirosuccinimides. Tetrahedron Lett 2021. [DOI: 10.1016/j.tetlet.2021.152872] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
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9
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Yamazaki T, Nakajima Y, Iida M, Kawasaki-Takasuka T. Facile preparation and conversion of 4,4,4-trifluorobut-2-yn-1-ones to aromatic and heteroaromatic compounds. Beilstein J Org Chem 2021; 17:132-138. [PMID: 33520000 PMCID: PMC7814177 DOI: 10.3762/bjoc.17.14] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2020] [Accepted: 12/18/2020] [Indexed: 11/23/2022] Open
Abstract
The concise preparation of 4,4,4-trifluorobut-2-yn-1-ones by the oxidation of the readily accessible corresponding propargylic alcohols as well as their utilization as Michael acceptors for the construction of aromatic and heteroaromatic compounds are reported.
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Affiliation(s)
- Takashi Yamazaki
- Division of Applied Chemistry, Institute of Engineering, Tokyo University of Agriculture and Technology, 2-24-16 Nakamachi, Koganei 184-8588, Japan
| | - Yoh Nakajima
- Division of Applied Chemistry, Institute of Engineering, Tokyo University of Agriculture and Technology, 2-24-16 Nakamachi, Koganei 184-8588, Japan
| | - Minato Iida
- Division of Applied Chemistry, Institute of Engineering, Tokyo University of Agriculture and Technology, 2-24-16 Nakamachi, Koganei 184-8588, Japan
| | - Tomoko Kawasaki-Takasuka
- Division of Applied Chemistry, Institute of Engineering, Tokyo University of Agriculture and Technology, 2-24-16 Nakamachi, Koganei 184-8588, Japan
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10
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Wang Y, Zheng Z, Yuan Y, Wang M, Guo Z, Jiang YY, Bai LP, Li Y. Cascade C–N bond cleavage of amides/intramolecular amination reactions: an atom economical way to α-cabolin-4-ones. Org Chem Front 2021. [DOI: 10.1039/d0qo01257b] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A novel one-pot procedure for the synthesis of 2,3-disubstituted α-carbolin-4-ones through successive C–N bond cleavage and intramolecular amination reactions involving a 1,2-acyl migration has been developed.
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Affiliation(s)
- Ye Wang
- School of Chemistry and Molecular Engineering
- East China Normal University
- Shanghai
- China
| | - Zhong Zheng
- School of Chemistry and Molecular Engineering
- East China Normal University
- Shanghai
- China
| | - Yang Yuan
- School of Chemistry and Molecular Engineering
- East China Normal University
- Shanghai
- China
| | - Mengdan Wang
- School of Chemistry and Molecular Engineering
- East China Normal University
- Shanghai
- China
| | - Zixia Guo
- School of Chemistry and Molecular Engineering
- East China Normal University
- Shanghai
- China
| | - Yuan-Ye Jiang
- School of Chemistry and Chemical Engineering
- Qufu Normal University
- Qufu
- China
| | - Li-Ping Bai
- State Key Laboratory of Quality Research in Chinese Medicine
- and Macau Institute for Applied Research in Medicine and Health
- Macau University of Science and Technology
- Taipa
- Macau
| | - Yanzhong Li
- School of Chemistry and Molecular Engineering
- East China Normal University
- Shanghai
- China
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11
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Lawer A, Epton RG, Stephens TC, Palate KY, Lodi M, Marotte E, Lamb KJ, Sangha JK, Lynam JM, Unsworth WP. Evaluating the Viability of Successive Ring-Expansions Based on Amino Acid and Hydroxyacid Side-Chain Insertion. Chemistry 2020; 26:12674-12683. [PMID: 32432817 PMCID: PMC7589337 DOI: 10.1002/chem.202002164] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2020] [Indexed: 01/20/2023]
Abstract
The outcome of ring-expansion reactions based on amino/hydroxyacid side-chain insertion is strongly dependent on ring size. This manuscript, which builds upon our previous work on Successive Ring Expansion (SuRE) methods, details efforts to better define the scope and limitations of these reactions on lactam and β-ketoester ring systems with respect to ring size and additional functionality. The synthetic results provide clear guidelines as to which substrate classes are more likely to be successful and are supported by computational results, using a density functional theory (DFT) approach. Calculating the relative Gibbs free energies of the three isomeric species that are formed reversibly during ring expansion enables the viability of new synthetic reactions to be correctly predicted in most cases. The new synthetic and computational results are expected to support the design of new lactam- and β-ketoester-based ring-expansion reactions.
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Affiliation(s)
- Aggie Lawer
- Department of ChemistryUniversity of YorkYorkYO10 5DDUK
| | - Ryan G. Epton
- Department of ChemistryUniversity of YorkYorkYO10 5DDUK
| | | | | | - Mahendar Lodi
- Department of ChemistryUniversity of YorkYorkYO10 5DDUK
| | - Emilie Marotte
- ENSICAEN6 Boulevard Maréchal Juin, CS 4505314050Caen Cedex 04France
| | - Katie J. Lamb
- Department of ChemistryUniversity of YorkYorkYO10 5DDUK
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12
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Mu Y, Yuan Y, Wang Y, Xu M, Feng Y, Zhao Y, Li Y. Synthesis of indoline-fused eight-membered azaheterocycles through Zn-catalyzed dearomatization of indoles and subsequent base-promoted C-C activation. Org Biomol Chem 2020; 18:6916-6926. [PMID: 32869825 DOI: 10.1039/d0ob01626h] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A cascade reaction involving the Zn-catalyzed dearomatization of indoles, base-promoted ring-expansion and intramolecular SNAr reaction has been developed. This process realized a novel, atom economical and efficient synthesis of indoline-fused eight-membered azaheterocycles in a one pot manner.
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Affiliation(s)
- Yuanyang Mu
- School of Chemistry and Molecular Engineering, East China Normal University, 500 Dongchuan Road, Shanghai 200241, China.
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13
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Yuan Y, Wang Y, Mu Y, Xu M, Fu S, Kong L, Li Y. Synthesis of Aza-Eight-Membered Ring-Fused Indolines Initiated by Zn-Catalyzed C2 Alkylation of Indoles and Subsequent Base-Promoted Ring Expansion. Org Lett 2020; 22:6532-6536. [PMID: 32806175 DOI: 10.1021/acs.orglett.0c02307] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
A novel and efficient synthesis of aza-eight-membered ring-fused indolines has been developed. This process is realized by zinc-catalyzed C2 alkylation of indoles and subsequent base-promoted ring expansion of the newly formed six-membered ring with alkynes. Easily accessible starting materials, good functional group tolerance, and high atom economy make this procedure attractive.
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Affiliation(s)
- Yang Yuan
- School of Chemistry and Molecular Engineering, East China Normal University, 500 Dongchuan Road, Shanghai 200241, China
| | - Ye Wang
- School of Chemistry and Molecular Engineering, East China Normal University, 500 Dongchuan Road, Shanghai 200241, China
| | - Yuanyang Mu
- School of Chemistry and Molecular Engineering, East China Normal University, 500 Dongchuan Road, Shanghai 200241, China
| | - Murong Xu
- School of Chemistry and Molecular Engineering, East China Normal University, 500 Dongchuan Road, Shanghai 200241, China
| | - Siyi Fu
- School of Chemistry and Molecular Engineering, East China Normal University, 500 Dongchuan Road, Shanghai 200241, China
| | - Lingkai Kong
- School of Chemistry and Chemical Engineering, Linyi University, Shuangling Road, Linyi, Shandong 276000, China
| | - Yanzhong Li
- School of Chemistry and Molecular Engineering, East China Normal University, 500 Dongchuan Road, Shanghai 200241, China
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