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Raji Reddy C, Vinaya PP, Srinivasu E, Subbarao M. Access to Methylidene-Azaspiro[4.5]decatrienones via Radical-Promoted Domino Thio-Functionalization/Dearomative Ipso-Annulation. J Org Chem 2025; 90:5171-5179. [PMID: 40202718 DOI: 10.1021/acs.joc.5c00077] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/10/2025]
Abstract
An unprecedented approach involving radical-mediated sulfonylation/dearomative ipso-annulation of N-(methyl-2-phenylacetate)propiolamides using arylsulfonyl radical, generated from aryl diazonium salt in the presence of DABSO, is developed. This strategy provides uniquely substituted 3-sulfonyl azaspiro[4.5]decatrienones in good yields. The developed approach has also been extended fruitfully to 3-thiocyano aza-spirocycles through domino thiocyanation/dearomative ipso-annulation.
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Affiliation(s)
- Chada Raji Reddy
- Department of Organic Synthesis & Process Chemistry CSIR-Indian Institute of Chemical Technology (CSIR-IICT), Hyderabad 500007, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Puthiya Purayil Vinaya
- Department of Organic Synthesis & Process Chemistry CSIR-Indian Institute of Chemical Technology (CSIR-IICT), Hyderabad 500007, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Ejjirotu Srinivasu
- Department of Organic Synthesis & Process Chemistry CSIR-Indian Institute of Chemical Technology (CSIR-IICT), Hyderabad 500007, India
| | - Muppidi Subbarao
- Department of Organic Synthesis & Process Chemistry CSIR-Indian Institute of Chemical Technology (CSIR-IICT), Hyderabad 500007, India
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2
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Jeon H, Kim JH, Kim S. Recent asymmetric synthesis of natural products bearing an α-tertiary amine moiety via temporary chirality induction strategies. Nat Prod Rep 2024; 41:228-250. [PMID: 37846620 DOI: 10.1039/d3np00032j] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2023]
Abstract
Covering: 2013 to 2023The α-tertiary amine moiety is a common structural motif in natural alkaloids and is frequently associated with intriguing biological activities and inherent synthetic challenges. A major hurdle in the total synthesis of these alkaloids is the asymmetric construction of the α-tertiary amine moiety. Temporary chirality inductions have been effective strategies employed to address this issue, particularly in natural product synthesis. The temporary chirality induction strategies in α-tertiary amine synthesis can be broadly classified into three categories based on the types of temporary chirality involved: Seebach's self-regeneration of stereocenters (SRS), C-to-N-to-C chirality transfer, and memory of chirality (MOC). This review highlights the recent advancements in temporary chirality induction strategies for the total synthesis of α-tertiary amine-containing natural products between 2013 and 2023.
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Affiliation(s)
- Hongjun Jeon
- Therapeutics & Biotechnology Division, Korea Research Institute of Chemical Technology (KRICT), Daejeon 34114, Republic of Korea
| | - Jae Hyun Kim
- College of Pharmacy, Chung-Ang University, Seoul 06974, Republic of Korea
| | - Sanghee Kim
- College of Pharmacy, Seoul National University, Seoul 08826, Republic of Korea.
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3
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Larghi EL, Bracca ABJ, Simonetti SO, Kaufman TS. Recent developments in the total synthesis of natural products using the Ugi multicomponent reactions as the key strategy. Org Biomol Chem 2024; 22:429-465. [PMID: 38126459 DOI: 10.1039/d3ob01837g] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2023]
Abstract
The total syntheses of selected natural products using different versions of the Ugi multicomponent reaction is reviewed on a case-by-case basis. The revision covers the period 2008-2023 and includes detailed descriptions of the synthetic sequences, the use of state-of-the-art chemical reagents and strategies, as well as the advantages and limitations of the transformation and some remedial solutions. Relevant data on the isolation and bioactivity of the different natural targets are also briefly provided. The examples clearly evidence the strategic importance of this transformation and its key role in the modern natural products synthetic chemistry toolbox. This methodology proved to be a valuable means for easily building molecular complexity and efficiently delivering step-economic syntheses even of intricate structures, with a promising future.
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Affiliation(s)
- Enrique L Larghi
- Instituto de Química Rosario (IQUIR, CONICET-UNR) and Facultad de Ciencias Bioquímicas y Farmacéuticas - Universidad Nacional de Rosario, Suipacha 531 (2000), Rosario, Argentina.
| | - Andrea B J Bracca
- Instituto de Química Rosario (IQUIR, CONICET-UNR) and Facultad de Ciencias Bioquímicas y Farmacéuticas - Universidad Nacional de Rosario, Suipacha 531 (2000), Rosario, Argentina.
| | - Sebastián O Simonetti
- Instituto de Química Rosario (IQUIR, CONICET-UNR) and Facultad de Ciencias Bioquímicas y Farmacéuticas - Universidad Nacional de Rosario, Suipacha 531 (2000), Rosario, Argentina.
| | - Teodoro S Kaufman
- Instituto de Química Rosario (IQUIR, CONICET-UNR) and Facultad de Ciencias Bioquímicas y Farmacéuticas - Universidad Nacional de Rosario, Suipacha 531 (2000), Rosario, Argentina.
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4
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Kiprova N, Desnoyers M, Narobe R, Klufts-Edel A, Chaud J, König B, Compain P, Kern N. Towards a General Access to 1-Azaspirocyclic Systems via Photoinduced, Reductive Decarboxylative Radical Cyclizations. Chemistry 2023:e202303841. [PMID: 38084823 DOI: 10.1002/chem.202303841] [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: 11/18/2023] [Indexed: 01/13/2024]
Abstract
A convenient and versatile approach to important 1-azaspirocyclic systems relevant to medicinal chemistry and natural products is reported herein. The main strategy relies on a reductive decarboxylative cyclization of redox-active esters which can be rapidly assembled from abundant cyclic azaacids and tailored acceptor sidechains, with a focus on alkyne acceptors enabling the generation of useful exo-alkene moieties. Diastereoconvergent variants were studied and could be achieved either through remote stereocontrol or conformational restriction in bicyclic carbamate substrates. Two sets of metal-free photocatalytic conditions employing inexpensive eosin Y were disclosed and studied experimentally to highlight key mechanistic divergences.
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Affiliation(s)
- Natalia Kiprova
- Laboratoire d'Innovation Moléculaire et Applications (LIMA), UMR 7042, Université de Strasbourg/Université de Haute-Alsace/CNRS, ECPM, 25 rue Becquerel, 67087 Strasbourg, France
| | - Marine Desnoyers
- Laboratoire d'Innovation Moléculaire et Applications (LIMA), UMR 7042, Université de Strasbourg/Université de Haute-Alsace/CNRS, ECPM, 25 rue Becquerel, 67087 Strasbourg, France
| | - Rok Narobe
- Institut für Organische Chemie, Universität Regensburg, Universitätsstrasse 31, Germany
| | - Arthur Klufts-Edel
- Laboratoire d'Innovation Moléculaire et Applications (LIMA), UMR 7042, Université de Strasbourg/Université de Haute-Alsace/CNRS, ECPM, 25 rue Becquerel, 67087 Strasbourg, France
| | - Juliane Chaud
- Laboratoire d'Innovation Moléculaire et Applications (LIMA), UMR 7042, Université de Strasbourg/Université de Haute-Alsace/CNRS, ECPM, 25 rue Becquerel, 67087 Strasbourg, France
| | - Burkhard König
- Institut für Organische Chemie, Universität Regensburg, Universitätsstrasse 31, Germany
| | - Philippe Compain
- Laboratoire d'Innovation Moléculaire et Applications (LIMA), UMR 7042, Université de Strasbourg/Université de Haute-Alsace/CNRS, ECPM, 25 rue Becquerel, 67087 Strasbourg, France
| | - Nicolas Kern
- Laboratoire d'Innovation Moléculaire et Applications (LIMA), UMR 7042, Université de Strasbourg/Université de Haute-Alsace/CNRS, ECPM, 25 rue Becquerel, 67087 Strasbourg, France
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5
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Aimon A, Dow MJ, Hanby AR, Okolo EA, Pask CM, Nelson A, Marsden SP. Synthesis of spirocyclic 1,2-diamines by dearomatising intramolecular diamination of phenols. Chem Commun (Camb) 2023; 59:607-610. [PMID: 36533578 DOI: 10.1039/d2cc06137f] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
The stereocontrolled synthesis of complex spirotricyclic systems containing an embedded syn-1,2-diaminocyclohexane unit is reported, based upon a dearomatising oxidation of phenols bearing pendant ureas capable of acting as double nucleophiles. This complexity-generating transformation yields products with rich functionality suitable for application in the synthesis of potentially bioactive compounds.
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Affiliation(s)
- Anthony Aimon
- School of Chemistry, University of Leeds, Leeds, LS2 9JT, UK.
| | - Mark J Dow
- School of Chemistry, University of Leeds, Leeds, LS2 9JT, UK.
| | - Abigail R Hanby
- School of Chemistry, University of Leeds, Leeds, LS2 9JT, UK.
| | - Ephraim A Okolo
- School of Chemistry, University of Leeds, Leeds, LS2 9JT, UK.
| | | | - Adam Nelson
- School of Chemistry, University of Leeds, Leeds, LS2 9JT, UK. .,Astbury Centre for Structural Molecular Biology, University of Leeds, Leeds, LS2 9JT, UK
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6
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BF3*OEt2 catalyzed synthesis of spiropyrrolidine frameworks via (3,5)-oxonium-ene cyclization. Tetrahedron Lett 2022. [DOI: 10.1016/j.tetlet.2022.154101] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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7
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Wang T, Huang B, Wang YQ. Enantioselective Synthesis of Spiro Chroman‐Isoindolinones via Formal (4+2) Cycloaddition of In Situ‐Generated ortho‐Quinone Methides with 3‐Methylene Isoindolinones. Adv Synth Catal 2022. [DOI: 10.1002/adsc.202200350] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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8
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Ding Y, Kuang J, Xiao X, Wang L, Ma Y. Environmentally Benign Synthesis of Quinoline-Spiroquinazolinones by Iron-Catalyzed Dehydrogenative [4 + 2] Cycloaddition of Secondary/Tertiary Anilines and 4-Methylene-quinazolinones. J Org Chem 2021; 86:12257-12266. [PMID: 34387487 DOI: 10.1021/acs.joc.1c01602] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
We report an efficient iron-catalyzed cross-dehydrogenative coupling [4 + 2] annulation of secondary/tertiary anilines with quinazolinones to generate quinoline-spiroquinzolinones. The reaction proceeds smoothly with a relatively broad variety of functional groups, a cheap transition metal catalyst (FeCl3), and environmentally friendly oxidant (H2O2/O2) under mild reaction conditions. Creatively, N-methylanilines are employed for the first time for the cycloaddition as both methyl and methylene sources attached to the N atom of tetrahydroquinolines.
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Affiliation(s)
- Yuxin Ding
- Institute of Advanced Studies and School of Pharmaceutical and Chemical Engineering, Taizhou University, Taizhou 318000, P R China.,School of Pharmaceutical Science, Zhejiang Chinese Medical University, Hangzhou 310053, P R China
| | - Jinqiang Kuang
- Institute of Advanced Studies and School of Pharmaceutical and Chemical Engineering, Taizhou University, Taizhou 318000, P R China
| | - Xuqiong Xiao
- Key Laboratory of Organosilicon Chemistry and Material Technology of Ministry of Education, Hangzhou Normal University, No. 2318 Yuhangtang Road, Hangzhou 311121, P R China
| | - Lei Wang
- Institute of Advanced Studies and School of Pharmaceutical and Chemical Engineering, Taizhou University, Taizhou 318000, P R China
| | - Yongmin Ma
- Institute of Advanced Studies and School of Pharmaceutical and Chemical Engineering, Taizhou University, Taizhou 318000, P R China.,School of Pharmaceutical Science, Zhejiang Chinese Medical University, Hangzhou 310053, P R China
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9
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Zhai L, Tang Y, Zhang Y, Huang SH, Zhu L, Hong R. A Bridge to Alkaloid Synthesis. CHEM REC 2021; 22:e202100197. [PMID: 34473401 DOI: 10.1002/tcr.202100197] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2021] [Revised: 08/23/2021] [Indexed: 11/07/2022]
Abstract
The construction of a structurally rigid architecture with chiral complexity, necessary to enhance the interaction with binding sites of drug targets, has been adapted as an intriguing approach in drug development. In the past few years, we have been interested in the synthesis of biologically significant and bridged alkaloids via novel synthetic methods and strategies based on recognition of the privileged pattern. Therefore, nitroso-ene and aza-Wacker cyclizations were elevated for the first time to construct bridged alkaloids, such as hosieine A, kopsone, melinonine-E and strychnoxanthine. Mechanistic investigations, including computational calculations for nitroso-ene reaction and deuterated experiments for aza-Wacker reaction, enable us to gain more insights into the chemical reactivity and selectivity of specific functional groups in developing viable synthetic methods.
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Affiliation(s)
- Li Zhai
- Shanghai University of Traditional Chinese Medicine, 1200 Cailun Road, Shanghai, 201203, PR China
- University of Chinese Academy of Sciences, 19 A Yuquan Road, Beijing 101419, PR China, CAS Key Laboratory of Synthetic Chemistry of Natural Substances, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry (CAS), 345 Lingling Road, Shanghai, 200032, PR China
| | - Ye Tang
- University of Chinese Academy of Sciences, 19 A Yuquan Road, Beijing 101419, PR China, CAS Key Laboratory of Synthetic Chemistry of Natural Substances, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry (CAS), 345 Lingling Road, Shanghai, 200032, PR China
| | - Yan Zhang
- University of Chinese Academy of Sciences, 19 A Yuquan Road, Beijing 101419, PR China, CAS Key Laboratory of Synthetic Chemistry of Natural Substances, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry (CAS), 345 Lingling Road, Shanghai, 200032, PR China
| | - Sha-Hua Huang
- School of Chemical and Environmental Engineering, Shanghai Institute of Technology, 100 Haiquan Road, Shanghai, 201418, PR China
| | - Lili Zhu
- University of Chinese Academy of Sciences, 19 A Yuquan Road, Beijing 101419, PR China, CAS Key Laboratory of Synthetic Chemistry of Natural Substances, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry (CAS), 345 Lingling Road, Shanghai, 200032, PR China
| | - Ran Hong
- Shanghai University of Traditional Chinese Medicine, 1200 Cailun Road, Shanghai, 201203, PR China
- University of Chinese Academy of Sciences, 19 A Yuquan Road, Beijing 101419, PR China, CAS Key Laboratory of Synthetic Chemistry of Natural Substances, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry (CAS), 345 Lingling Road, Shanghai, 200032, PR China
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10
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Wang ZY, Yang T, Chen R, Ma X, Liu H, Wang KK. 1,3-Dipolar cycloaddition of isatin N, N'-cyclic azomethine imines with α,β-unsaturated aldehydes catalyzed by DBU in water. RSC Adv 2020; 10:24288-24292. [PMID: 35516173 PMCID: PMC9055116 DOI: 10.1039/d0ra03806g] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2020] [Accepted: 06/18/2020] [Indexed: 11/22/2022] Open
Abstract
A simple and green procedure was established by [3 + 3] cycloaddition reaction of isatin derived cyclic imine 1,3-dipoles with α,β-unsaturated aldehydes, giving the desired spiro heterocyclic oxindoles with aza-quaternary centers in good yields and diastereoselectivities. It should be noted that water can be employed as a suitable solvent for the improvement of diastereoselectivity. A simple and green procedure was established by [3 + 3] cycloaddition reaction of isatin derived cyclic imine 1,3-dipoles with α,β-unsaturated aldehydes, giving spirooxindoles with aza-quaternary center in good yields and diastereoselectivities.![]()
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Affiliation(s)
- Zhan-Yong Wang
- College of Chemistry and Chemical Engineering, Xinxiang University Xinxiang 453003 P. R. China
| | - Ting Yang
- Medical College, Xinxiang University Xinxiang 453003 P. R. China
| | - Rongxiang Chen
- College of Chemistry and Chemical Engineering, Xinxiang University Xinxiang 453003 P. R. China
| | - Xueji Ma
- College of Chemistry and Chemical Engineering, Xinxiang University Xinxiang 453003 P. R. China
| | - Huan Liu
- College of Chemistry and Chemical Engineering, Xinxiang University Xinxiang 453003 P. R. China
| | - Kai-Kai Wang
- College of Chemistry and Chemical Engineering, Xinxiang University Xinxiang 453003 P. R. China
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11
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Shimomura M, Sato M, Azuma H, Sakata J, Tokuyama H. Total Synthesis of (-)-Lepadiformine A via Radical Translocation-Cyclization Reaction. Org Lett 2020; 22:3313-3317. [PMID: 32182082 DOI: 10.1021/acs.orglett.0c00474] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Total synthesis of (-)-lepadiformine A featuring construction of the 1-azaspiro[4.5]decane skeleton by a highly diastereoselective radical translocation-cyclization reaction of a γ-lactam derivative bearing a chiral butenolide moiety is described. The enantioselective construction of butenolide is conducted via Krische's catalytic asymmetric allylation protocol. After the radical translocation-cyclization reaction, a hydroxymethyl group at the C-13 position was stereoselectively introduced by a one-pot partial reduction-allylation protocol of the unprotected lactam derivative. Finally, the total synthesis is completed by formation of a C ring.
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Affiliation(s)
- Masashi Shimomura
- Graduate School of Pharmaceutical Sciences, Tohoku University, Aoba 6-3, Aramaki, Aoba-ku, Sendai 980-8578, Japan
| | - Manabu Sato
- Graduate School of Pharmaceutical Sciences, Tohoku University, Aoba 6-3, Aramaki, Aoba-ku, Sendai 980-8578, Japan
| | - Hiroki Azuma
- Graduate School of Pharmaceutical Sciences, Tohoku University, Aoba 6-3, Aramaki, Aoba-ku, Sendai 980-8578, Japan
| | - Juri Sakata
- Graduate School of Pharmaceutical Sciences, Tohoku University, Aoba 6-3, Aramaki, Aoba-ku, Sendai 980-8578, Japan
| | - Hidetoshi Tokuyama
- Graduate School of Pharmaceutical Sciences, Tohoku University, Aoba 6-3, Aramaki, Aoba-ku, Sendai 980-8578, Japan
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12
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Zhuo JR, Quan BX, Zhao JQ, Zhang ML, Chen YZ, Zhang XM, Yuan WC. Base-mediated [4+2] annulation of electron-deficient nitrobenzoheterocycles and α,α-dicyanoalkenes in water: Facile access to structurally diverse functionalized dibenzoheterocyclic compounds. Tetrahedron 2020. [DOI: 10.1016/j.tet.2020.131115] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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13
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Yamamoto K, Tsuda Y, Kuriyama M, Demizu Y, Onomura O. Copper-Catalyzed Enantioselective Synthesis of Oxazolines from Aminotriols via Asymmetric Desymmetrization. Chem Asian J 2020; 15:840-844. [PMID: 32030893 DOI: 10.1002/asia.201901742] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2019] [Revised: 01/28/2020] [Indexed: 11/06/2022]
Abstract
A copper-catalyzed enantioselective transformation of tris(hydroxymethyl)aminomethane-derived aminotriols was developed to provide multisubstituted oxazolines with a tetrasubstituted carbon center. The present transformation consisted of sequential reactions involving mono-sulfonylation of aminotriols, subsequent intramolecular cyclization to afford prochiral oxazoline diols, and sulfonylative asymmetric desymmetrization of resultant oxazoline diols. In addition, the kinetic resolution process would be involved in the sulfonylative asymmetric desymmetrization step, which would amplify the enantiopurities of the desired products. Various aminotriols were tolerated in the present reaction, affording the desired oxazolines in good to high yields with excellent enantioselectivities. The synthetic utility of the present reaction was demonstrated by the transformation of the optically active oxazoline into a chiral α-tertiary amine motif.
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Affiliation(s)
- Kosuke Yamamoto
- Graduate School of Biomedical Sciences, Nagasaki University 1-14 Bunkyo-machi, Nagasaki, 852-8521, Japan
| | - Yutaro Tsuda
- Graduate School of Biomedical Sciences, Nagasaki University 1-14 Bunkyo-machi, Nagasaki, 852-8521, Japan
| | - Masami Kuriyama
- Graduate School of Biomedical Sciences, Nagasaki University 1-14 Bunkyo-machi, Nagasaki, 852-8521, Japan
| | - Yosuke Demizu
- Graduate School of Biomedical Sciences, Nagasaki University 1-14 Bunkyo-machi, Nagasaki, 852-8521, Japan
| | - Osamu Onomura
- Graduate School of Biomedical Sciences, Nagasaki University 1-14 Bunkyo-machi, Nagasaki, 852-8521, Japan
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14
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Yamamoto K, Kuriyama M, Onomura O. Anodic Oxidation for the Stereoselective Synthesis of Heterocycles. Acc Chem Res 2020; 53:105-120. [PMID: 31872753 DOI: 10.1021/acs.accounts.9b00513] [Citation(s) in RCA: 140] [Impact Index Per Article: 28.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Stereodefined aliphatic heterocycles are one of the fundamental structural motifs observed in natural products and biologically active compounds. Various strategies for the synthesis of these building blocks based on transition metal catalysis, organocatalysis, and noncatalytic conditions have been developed. Although electrosynthesis has also been utilized for the functionalization of aliphatic heterocycles, stereoselective transformations under electrochemical conditions are still a challenging field in electroorganic chemistry. This Account consists of four main topics related to our recent efforts on the diastereo- and/or enantioselective synthesis of aliphatic heterocycles, especially N-heterocycles, using anodic oxidations as key steps. The first topic is the development of stereoselective synthetic methods for multisubstituted piperidines and pyrrolidines from anodically prepared α-methoxy cyclic amines. Our strategies were based primarily on N-acyliminium ion chemistry, and the key electrochemical transformations were diastereoselective anodic methoxylation, diastereoselective arylation, and anodic deallylative methoxylation. Furthermore, we found a unique property of the N-cyano protecting group that enabled the electrochemical α-methoxylation of α-substituted cyclic amines. The second topic of investigation is memory of chirality in electrochemical decarboxylative methoxylation. We observed that the electrochemical decarboxylative methoxylation of oxazolidine and thiazolidine derivatives with the appropriate N-protecting group occurred in a stereospecific manner even though the reaction proceeded through an sp2 planar carbon center. Our findings demonstrated the first example of memory of chirality in N-acyliminium ion chemistry. The third topic is the synthesis of chiral azabicyclo-N-oxyls and their application to chiral organocatalysis in the electrochemical oxidative kinetic resolution of secondary alcohols. The final topic is stereoselective transformations utilizing anodically generated halogen cations. We investigated the oxidative kinetic resolution of amino alcohol derivatives using anodically generated bromo cations. We also developed an intramolecular C-C bond formation of keto amides, a diastereoselective bromoiminolactonization of α-allyl malonamides, and an oxidative ring expansion reaction of allyl alcohols. It is noteworthy that most of the electrochemical reactions were performed in undivided cells under constant-current conditions, which avoided a complicated reaction setup and was beneficial for a large-scale reaction. In addition, we developed some enantioselective electrochemical transformations that are still challenges in electroorganic chemistry. We hope that our research will contribute to the further development of diastereo- and/or enantioselective transformations and the construction of valuable heterocyclic compounds using an electrochemical approach.
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Affiliation(s)
- Kosuke Yamamoto
- Graduate School of Biomedical Sciences, Nagasaki University, 1-14 Bunkyo-machi, Nagasaki 852-8521, Japan
| | - Masami Kuriyama
- Graduate School of Biomedical Sciences, Nagasaki University, 1-14 Bunkyo-machi, Nagasaki 852-8521, Japan
| | - Osamu Onomura
- Graduate School of Biomedical Sciences, Nagasaki University, 1-14 Bunkyo-machi, Nagasaki 852-8521, Japan
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15
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Wu J, Ma D, Tang G, Zhao Y. Copper-Catalyzed Phosphonylation/Trifluoromethylation of N- p-NO 2-Benzoylacrylamides Coupled with Dearomatization and Denitration. Org Lett 2019; 21:7674-7678. [PMID: 31496252 DOI: 10.1021/acs.orglett.9b03034] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
A novel and efficient copper-tert-butyl hydroperoxide mediated intramolecular spirocyclization of N-p-NO2-benzoylacrylamides through a cascade radical addition-ipso-cyclization-dearomatization-denitration process has been developed, affording a convenient and powerful tool for the preparation of valuable phosphonated or trifluoromethylated azaspiro[4.5]decadientriones under mild conditions in good yields.
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Affiliation(s)
- Ju Wu
- Department of Chemistry, College of Chemistry and Chemical Engineering, and the Key Laboratory for Chemical Biology of Fujian Province , Xiamen University , Xiamen , Fujian 361005 , China.,Institut de Chimie Moléculaire et des Matériaux d'Orsay (ICMMO, UMR 8182), Equipe MSMT, Univ. Paris Sud, CNRS , Université Paris-Saclay , 15, rue Georges Clémenceau , 91405 Orsay , Cedex, France
| | - Dumei Ma
- Department of Chemical and Biochemical Engineering, College of Chemistry and Chemical Engineering , Xiamen University , Xiamen , Fujian 361005 , China
| | - Guo Tang
- Department of Chemistry, College of Chemistry and Chemical Engineering, and the Key Laboratory for Chemical Biology of Fujian Province , Xiamen University , Xiamen , Fujian 361005 , China
| | - Yufen Zhao
- Department of Chemistry, College of Chemistry and Chemical Engineering, and the Key Laboratory for Chemical Biology of Fujian Province , Xiamen University , Xiamen , Fujian 361005 , China
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16
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Cheng JT, Zheng X, Huang PQ. Construction of multifunctional heterocycles bearing aza-quaternary carbons by titanocene-catalyzed umpolung reactions. Tetrahedron 2019. [DOI: 10.1016/j.tet.2018.11.067] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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17
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Saikia UP, Borah G, Pahari P. Lewis-Acid-Catalysed Activation of Nitriles: A Microwave-Assisted Solvent-Free Synthesis of 2,4-Disubstituted Quinazolines and 1,3-Diazaspiro[5.5]undec-1-enes. European J Org Chem 2018. [DOI: 10.1002/ejoc.201701585] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
- Ujwal Pratim Saikia
- Chemical Science and Technology Division; CSIR-North East Institute of Science and Technology; 785006 Jorhat- Assam India
| | - Geetika Borah
- Department of Chemistry; Dibrugarh University; 786004 Dibrugarh- Assam India
| | - Pallab Pahari
- Chemical Science and Technology Division; CSIR-North East Institute of Science and Technology; 785006 Jorhat- Assam India
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18
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Caillé J, Boukattaya F, Boeda F, Pearson-Long MSM, Ammar H, Bertus P. Successive addition of two different Grignard reagents to nitriles: access to α,α-disubstituted propargylamine derivatives. Org Biomol Chem 2018; 16:1519-1526. [PMID: 29419848 DOI: 10.1039/c7ob03047a] [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
The successive addition of two different Grignard reagents to acyl cyanohydrins was performed with success by taking advantage of the low reactivity of alkynyl Grignard reagents. The experimental conditions were adjusted so that they were not reactive during the first addition step, but reactive only in the second one. The synthetic utility of the prepared compounds was validated by the preparation of chiral quaternary α-amino acids.
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Affiliation(s)
- Julien Caillé
- Le Mans Université (Université du Maine), CNRS UMR 6283, Institut des Molécules et Matériaux du Mans (IMMM), 72085 Le Mans Cedex 09, France.
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19
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Meng SS, Tang WB, Zheng WH. Catalytically Enantioselective Synthesis of Acyclic α-Tertiary Amines through Desymmetrization of 2-Substituted 2-Nitro-1,3-diols. Org Lett 2018; 20:518-521. [DOI: 10.1021/acs.orglett.7b03581] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Shan-Shui Meng
- State Key Laboratory of Coordination
Chemistry, Jiangsu Key Laboratory of Advanced Organic Materials, School
of Chemistry and Chemical Engineering, Nanjing University, 163 Xianlin
Avenue, Nanjing, Jiangsu 210023, China
| | - Wu-Bang Tang
- State Key Laboratory of Coordination
Chemistry, Jiangsu Key Laboratory of Advanced Organic Materials, School
of Chemistry and Chemical Engineering, Nanjing University, 163 Xianlin
Avenue, Nanjing, Jiangsu 210023, China
| | - Wen-Hua Zheng
- State Key Laboratory of Coordination
Chemistry, Jiangsu Key Laboratory of Advanced Organic Materials, School
of Chemistry and Chemical Engineering, Nanjing University, 163 Xianlin
Avenue, Nanjing, Jiangsu 210023, China
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20
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Kano T, Aota Y, Maruoka K. Asymmetric Synthesis of Less Accessible α-Tertiary Amines from Alkynyl Z-Ketimines. Angew Chem Int Ed Engl 2017; 56:16293-16296. [PMID: 29110376 DOI: 10.1002/anie.201710084] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2017] [Indexed: 11/05/2022]
Abstract
A highly stereoselective synthesis of hitherto less accessible chiral α-tertiary amines with multiple structurally similar linear carbon chains was achieved through chiral auxiliary mediated addition of organolithium reagents to the geometrically well-controlled alkynyl Z-ketimines. This stereoselective nucleophilic addition offers a general approach to the asymmetric synthesis of nitrogen-containing chiral materials.
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Affiliation(s)
- Taichi Kano
- Department of Chemistry, Graduate School of Science, Kyoto University, Sakyo, Kyoto, 606-8502, Japan
| | - Yusuke Aota
- Department of Chemistry, Graduate School of Science, Kyoto University, Sakyo, Kyoto, 606-8502, Japan
| | - Keiji Maruoka
- Department of Chemistry, Graduate School of Science, Kyoto University, Sakyo, Kyoto, 606-8502, Japan
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21
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Kano T, Aota Y, Maruoka K. Asymmetric Synthesis of Less Accessible α-Tertiary Amines from Alkynyl Z-
Ketimines. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201710084] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Taichi Kano
- Department of Chemistry; Graduate School of Science; Kyoto University; Sakyo Kyoto 606-8502 Japan
| | - Yusuke Aota
- Department of Chemistry; Graduate School of Science; Kyoto University; Sakyo Kyoto 606-8502 Japan
| | - Keiji Maruoka
- Department of Chemistry; Graduate School of Science; Kyoto University; Sakyo Kyoto 606-8502 Japan
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22
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Kiyokawa K, Watanabe T, Fra L, Kojima T, Minakata S. Hypervalent Iodine(III)-Mediated Decarboxylative Ritter-Type Amination Leading to the Production of α-Tertiary Amine Derivatives. J Org Chem 2017; 82:11711-11720. [DOI: 10.1021/acs.joc.7b01202] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Affiliation(s)
- Kensuke Kiyokawa
- Department of Applied Chemistry,
Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka 565-0871, Japan
| | - Tomoki Watanabe
- Department of Applied Chemistry,
Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka 565-0871, Japan
| | - Laura Fra
- Department of Applied Chemistry,
Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka 565-0871, Japan
| | - Takumi Kojima
- Department of Applied Chemistry,
Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka 565-0871, Japan
| | - Satoshi Minakata
- Department of Applied Chemistry,
Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka 565-0871, Japan
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23
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Saruengkhanphasit R, Collier D, Coldham I. Synthesis of Spirocyclic Amines by Using Dipolar Cycloadditions of Nitrones. J Org Chem 2017; 82:6489-6496. [DOI: 10.1021/acs.joc.7b00959] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Affiliation(s)
| | - Darren Collier
- Department of Chemistry, University of Sheffield, Sheffield S3 7HF, U.K
| | - Iain Coldham
- Department of Chemistry, University of Sheffield, Sheffield S3 7HF, U.K
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24
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Xu ZL, Xing P, Jiang B. Intramolecular Aza-Piancatelli Rearrangement of Alkyl- or Arylamines Promoted by PPh3/Diethyl Azodicarboxylate. Org Lett 2017; 19:1028-1031. [DOI: 10.1021/acs.orglett.6b03853] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Zhong-Li Xu
- CAS Key Laboratory of Synthetic
Chemistry of Natural Substances, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, China
| | - Ping Xing
- CAS Key Laboratory of Synthetic
Chemistry of Natural Substances, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, China
| | - Biao Jiang
- CAS Key Laboratory of Synthetic
Chemistry of Natural Substances, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, China
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25
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Annadi K, Wee AGH. An Alkylidene Carbene C–H Activation Approach toward the Enantioselective Syntheses of Spirolactams: Application to the Synthesis of (−)-Adalinine. J Org Chem 2016; 81:1021-38. [DOI: 10.1021/acs.joc.5b02582] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Affiliation(s)
- Krishna Annadi
- Department
of Chemistry and
Biochemistry, University of Regina, Regina, Saskatchewan, S4S 0A2, Canada
| | - Andrew G. H. Wee
- Department
of Chemistry and
Biochemistry, University of Regina, Regina, Saskatchewan, S4S 0A2, Canada
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26
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Nitroso-ene cyclization enabled access to 1-azaspiro[4.4]nonane and its application in a modular synthesis toward (±)-cephalotaxine. Tetrahedron Lett 2015. [DOI: 10.1016/j.tetlet.2015.10.002] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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27
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Hager A, Vrielink N, Hager D, Lefranc J, Trauner D. Synthetic approaches towards alkaloids bearing α-tertiary amines. Nat Prod Rep 2015; 33:491-522. [PMID: 26621771 DOI: 10.1039/c5np00096c] [Citation(s) in RCA: 149] [Impact Index Per Article: 14.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Alkaloids account for some of the most beautiful and biologically active natural products. Although they are usually classified along biosynthetic criteria, they can also be categorized according to certain structural motifs. Amongst these, the α-tertiary amine (ATA), i.e. a tetrasubstituted carbon atom surrounded by three carbons and one nitrogen, is particularly interesting. A limited number of methods have been described to access this functional group and fewer still are commonly used in synthesis. Herein, we review some approaches to asymmetrically access ATAs and provide an overview of alkaloid total syntheses where those have been employed.
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Affiliation(s)
- Anastasia Hager
- Fakultät für Chemie und Pharmazie, Ludwig-Maximilians-Universität München, and Munich Center for Integrated Protein Science, Butenandtstr. 5 - 13, 81377 München, Germany.
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28
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Xu Y, Huang D, Wang KH, Ma J, Su Y, Fu Y, Hu Y. Tin Powder-Promoted One-Pot Construction of α-Methylene-γ-lactams and Spirolactams from Aldehydes or Ketones, Acylhydrazines, and 2-(Bromomethyl)acrylate. J Org Chem 2015; 80:12224-33. [DOI: 10.1021/acs.joc.5b02154] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Yanli Xu
- College
of Chemistry and Chemical Engineering, Northwest Normal University, 967
Anning East Road, Lanzhou 730070, P. R. China
| | - Danfeng Huang
- College
of Chemistry and Chemical Engineering, Northwest Normal University, 967
Anning East Road, Lanzhou 730070, P. R. China
| | - Ke-Hu Wang
- College
of Chemistry and Chemical Engineering, Northwest Normal University, 967
Anning East Road, Lanzhou 730070, P. R. China
| | - Junyan Ma
- College
of Chemistry and Chemical Engineering, Northwest Normal University, 967
Anning East Road, Lanzhou 730070, P. R. China
| | - Yingpeng Su
- College
of Chemistry and Chemical Engineering, Northwest Normal University, 967
Anning East Road, Lanzhou 730070, P. R. China
| | - Ying Fu
- College
of Chemistry and Chemical Engineering, Northwest Normal University, 967
Anning East Road, Lanzhou 730070, P. R. China
| | - Yulai Hu
- College
of Chemistry and Chemical Engineering, Northwest Normal University, 967
Anning East Road, Lanzhou 730070, P. R. China
- State
Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000, P. R. China
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29
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Kuznetsov NY, Bubnov YN. Ruthenium-catalyzed intramolecular metathesis of dienes and its application in the synthesis of bridged and spiro azabicycles. RUSSIAN CHEMICAL REVIEWS 2015. [DOI: 10.1070/rcr4478] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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30
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Pandey G, Janakiram V. Aza-Quaternary Scaffolds from Selective Bond Cleavage of Bridgehead-Substituted 7-Azabicyclo[2.2.1]heptane: Total Synthesis of (+)-Cylindricines C-E and (−)-Lepadiformine A. Chemistry 2015. [DOI: 10.1002/chem.201501859] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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31
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Christmann M, Hu J, Kitamura M, Stoltz B. Tetrahedron reports on organic chemistry. Tetrahedron 2015. [DOI: 10.1016/s0040-4020(15)00744-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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32
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Zhu DY, Zhang Z, Mou XQ, Tu YQ, Zhang FM, Peng JB, Wang SH, Zhang SY. Gold(I)/Copper(II)-Cocatalyzed Tandem Cyclization/Semipinacol Reaction: Construction of 6-Aza/Oxa-Spiro[4.5]decane Skeletons and Formal Synthesis of (±)-Halichlorine. Adv Synth Catal 2015. [DOI: 10.1002/adsc.201400932] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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33
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Martinand-Lurin E, Gruber R, Retailleau P, Fleurat-Lessard P, Dauban P. Studies on the formal [3 + 2] cycloaddition of aziridines with alkenes for the synthesis of 1-azaspiroalkanes. J Org Chem 2015; 80:1414-26. [PMID: 25521526 DOI: 10.1021/jo502333j] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
The Lewis acid-mediated [3 + 2] cycloaddition of N-sulfonyl- and N-sulfamoylaziridines with alkenes provides a rapid and efficient access to 1-azaspiro[4.n]alkanes. Experimental studies have been combined with DFT calculations to explore the mechanism of the reaction. They demonstrate that the nature of the electron-withdrawing nitrogen protecting group has a very limited influence on the course of the reaction and, particularly, on the initial formation of the 1,3-zwitterionic species through C-N bond cleavage, which has been found to be the rate-determining step. Compared to N-sulfonylaziridines, N-sulfamoylaziridines have proved to be more synthetically useful synthons that afford crystalline polycyclic structures in good yields. A short sequence of catalytic C(sp(3))-H amination-cyclization-[3 + 2] cycloaddition has then been successfully designed to afford the homologue 1-azaspiro[5.n]alkanes, thereby illustrating the higher versatility of sulfamates in these cycloadditions.
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Affiliation(s)
- Elodie Martinand-Lurin
- Centre de Recherche de Gif-sur-Yvette, Institut de Chimie des Substances Naturelles, UPR 2301 CNRS, Avenue de la Terrasse, 91198 Gif-sur-Yvette Cedex, France
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34
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Parihar VS, Pawar NJ, Ghosh S, Chopade B, Kumbhar N, Dhavale DD. Diazaspiro-iminosugars and polyhydroxylated spiro-bislactams: synthesis, glycosidase inhibition and molecular docking studies. RSC Adv 2015. [DOI: 10.1039/c5ra09584k] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
Abstract
Synthesis of a new class of iminosugars 1–4 has been reported.
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Affiliation(s)
- Vijay Singh Parihar
- Department of Chemistry
- Garware Research Centre
- Savitribai Phule Pune University (Formerly University of Pune)
- Pune-411 007
- India
| | - Nitin J. Pawar
- Department of Chemistry
- Garware Research Centre
- Savitribai Phule Pune University (Formerly University of Pune)
- Pune-411 007
- India
| | - Sougata Ghosh
- Department of Microbiology
- Savitribai Phule Pune University
- Pune-411 007
- India
| | - Balu Chopade
- Department of Microbiology
- Savitribai Phule Pune University
- Pune-411 007
- India
| | - Navanath Kumbhar
- Department of Chemistry
- Garware Research Centre
- Savitribai Phule Pune University (Formerly University of Pune)
- Pune-411 007
- India
| | - Dilip D. Dhavale
- Department of Chemistry
- Garware Research Centre
- Savitribai Phule Pune University (Formerly University of Pune)
- Pune-411 007
- India
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35
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Saikia UP, Baruah D, Pahari P, Borah MJ, Goswami A, Konwar D. A facile microwave assisted synthesis of spiro-1,3-oxazines from N-(2-(cyclohex-1-en-1-yl)ethyl)amides. Tetrahedron Lett 2014. [DOI: 10.1016/j.tetlet.2014.06.042] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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36
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Köhler née Adrien A, Raabe G, Runsink J, Köhler F, Gais HJ. Sulfoximine-Based Modular Enantioselective Synthesis of Azaspirocycles Featuring Sulfoximine Displacement, Dianion Cycloalkylation, RCM andN-Acyliminium Ion Formation. European J Org Chem 2014. [DOI: 10.1002/ejoc.201400068] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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37
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Padwa A, Zou Y, Cheng B, Li H, Downer-Riley N, Straub CS. Intramolecular Cycloaddition Reactions of Furo[3,4-b]indoles for Alkaloid Synthesis. J Org Chem 2014; 79:3173-84. [DOI: 10.1021/jo500331j] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Albert Padwa
- Department
of Chemistry, Emory University, Atlanta, Georgia 30322, United States
| | - Yan Zou
- Department
of Chemistry, Emory University, Atlanta, Georgia 30322, United States
| | - Bo Cheng
- Department
of Chemistry, Emory University, Atlanta, Georgia 30322, United States
| | - Hao Li
- Department
of Chemistry, Emory University, Atlanta, Georgia 30322, United States
| | - Nadale Downer-Riley
- Department
of Chemistry, University of the West Indies, Mona, Kingston 7, Jamaica
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38
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Kalaitzakis D, Antonatou E, Vassilikogiannakis G. One-pot synthesis of 1-azaspiro frameworks initiated by photooxidation of simple furans. Chem Commun (Camb) 2014; 50:400-2. [DOI: 10.1039/c3cc47690a] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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39
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Padwa A, Cheng B, Zou Y. Natural Product Synthesis via the Rhodium Carbenoid-Mediated Cyclization of α-Diazo Carbonyl Compounds. Aust J Chem 2014. [DOI: 10.1071/ch13307] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
The chemistry of metal carbene complexes has provided chemists with exceptionally fertile ground for designing and developing new stereoselective bond construction for application towards the synthesis of various natural products. In particular, the RhII-catalyzed reaction of 2-diazo-3-oxobutanoates bearing tethered π-bonds represents a synthetically useful protocol for the construction of a variety of novel polycyclic skeletons. The related RhII-catalyzed reaction of the 2-diazo-2-(1H-indol-2-yl)acetate system has recently been examined as a potential route towards scandine, a member of the melodinus family of alkaloids.
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40
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Xu S, Unabara D, Uemura D, Arimoto H. Enantioselective Total Synthesis of Pinnaic Acid and Halichlorine. Chem Asian J 2013; 9:367-75. [DOI: 10.1002/asia.201301248] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2013] [Indexed: 01/17/2023]
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41
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Moreno-Fuquen R, Soto DM, Jaramillo-Gómez LM, Ellena J, Tenorio JC. 2-[1'-(Benz-yloxy)spiro-[indane-1,2'-pyrrolidine]-5'-yl]aceto-nitrile. Acta Crystallogr Sect E Struct Rep Online 2013; 69:o1192-3. [PMID: 24109293 PMCID: PMC3793706 DOI: 10.1107/s1600536813017674] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2013] [Accepted: 06/26/2013] [Indexed: 11/22/2022]
Abstract
In the title compound, C21H22N2O, the planes of the two six-membered rings make a dihedral angle of 89.51 (7)°. The pyrrolidine ring has a puckering amplitude q2 = 0.418 (3) and a pseudo-rotation phase angle ϕ2 = −166.8 (5), adopting a twist conformation (T). The other five-membered ring has a puckering amplitude q2 = 0.247 (2) and a pseudo-rotation phase angle ϕ2 = −173.7 (5), adopting an envelope conformation with the CH2 atom adjacent to the C atom common with the pyrrolidine ring as the flap. In the crystal, molecules are linked via C—H⋯N, enclosing R22(20) rings, forming chains propagating along [100]. The acetonitrile group is disordered over two positions and was refined with a fixed occupancy ratio of 0.56:0.44.
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Affiliation(s)
- Rodolfo Moreno-Fuquen
- Departamento de Química, Facultad de Ciencias, Universidad del Valle, Apartado 25360, Santiago de Cali, Colombia
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42
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Piutti C, Quartieri F. The Piancatelli rearrangement: new applications for an intriguing reaction. Molecules 2013; 18:12290-312. [PMID: 24108396 PMCID: PMC6270237 DOI: 10.3390/molecules181012290] [Citation(s) in RCA: 89] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2013] [Revised: 09/18/2013] [Accepted: 09/23/2013] [Indexed: 11/16/2022] Open
Abstract
Nearly forty years ago, at the University of Rome, Giovanni Piancatelli and co-workers discovered the acid-catalyzed water-mediated rearrangement of 2-furylcarbinols into 4-hydroxycyclopentenones. These motifs are core components of several pharmacologically active compounds and precursors of many natural products. The main features of this reaction are the simple experimental conditions, the stereochemical outcome and the generality of the procedure. Consequently, a re-emergence of this reaction has been seen recently, including developments of the Piancatelli rearrangement with some interesting inter- and intramolecular variants. This review will mainly focus on the general aspects of the reaction along with its more recent applications.
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Affiliation(s)
- Claudia Piutti
- Department of Medicinal Chemistry, Nerviano Medical Sciences srl, Business Unit Oncology, Viale Pasteur 10, 20014 Nerviano, MI, Italy
- Author to whom correspondence should be addressed; E-Mail: ; Tel.: +39-0331-581-679; Fax: +39-0331-581-360
| | - Francesca Quartieri
- Department of Chemical Core Technologies, Nerviano Medical Sciences srl, Business Unit Oncology, Viale Pasteur 10, 20014 Nerviano, MI, Italy; E-Mail:
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43
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Balalaie S, Moghimi H, Bararjanian M, Rominger F, Bijanzadeh HR, Sheikhahmadi M. An Efficient Synthesis andIn VitroAntibacterial Activity of Novel Spiro-aminopyrimidones. J Heterocycl Chem 2013. [DOI: 10.1002/jhet.1690] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Saeed Balalaie
- Peptide Chemistry Research Center; K. N. Toosi University of Technology; Tehran 15875-4416 Iran
| | - Hamid Moghimi
- Department of Microbiology, Faculty of Biology; University of Tehran; Tehran Iran
| | - Morteza Bararjanian
- Peptide Chemistry Research Center; K. N. Toosi University of Technology; Tehran 15875-4416 Iran
| | - Frank Rominger
- Organisch Chemisches Institut der Universitaet Heidelberg; Im Neuenheimer Feld 270 Heidelberg 69120 Germany
| | - Hamid Reza Bijanzadeh
- Peptide Chemistry Research Center; K. N. Toosi University of Technology; Tehran 15875-4416 Iran
- Department of Chemistry; Tarbiat Modares University; Tehran 141115-175 Iran
| | - Masoumeh Sheikhahmadi
- Peptide Chemistry Research Center; K. N. Toosi University of Technology; Tehran 15875-4416 Iran
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44
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Stoltz B, Motherwell W. Tetrahedron reports on organic chemistry. Tetrahedron 2013. [DOI: 10.1016/s0040-4020(13)01252-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Xiao KJ, Luo JM, Xia XE, Wang Y, Huang PQ. General One-Pot Reductivegem-Bis-Alkylation of Tertiary Lactams/Amides: Rapid Construction of 1-Azaspirocycles and Formal Total Synthesis of (±)-Cephalotaxine. Chemistry 2013; 19:13075-86. [DOI: 10.1002/chem.201302096] [Citation(s) in RCA: 75] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2013] [Indexed: 12/23/2022]
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46
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Synthesis and differential functionalisation of pyrrolidine and piperidine based spirodiamine scaffolds. Tetrahedron 2013. [DOI: 10.1016/j.tet.2013.03.064] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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47
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Ding XH, Cui WC, Li X, Ju X, Liu D, Wang S, Yao ZJ. Organocatalytic enantioselective conjugate addition of 2-nitrocyclohexanone to acrylaldehyde: a concise two-step synthesis of chiral building block 1-azaspiro[4.5]decan-6-one. Tetrahedron Lett 2013. [DOI: 10.1016/j.tetlet.2013.01.114] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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48
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Sancibrao P, Gori D, Kouklovsky C, Vincent G. Synthesis of oxaspirannic building blocks by regioselective nitroso-Diels-Alder reactions. Chemistry 2013; 19:5557-60. [PMID: 23508771 DOI: 10.1002/chem.201300195] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2013] [Indexed: 11/11/2022]
Abstract
Spirocyclic structures: Nitroso-Diels-Alder reactions of 1,3-disubstituted cyclohexadienes were found to be regiodivergent, depending on the nitroso derivative used. Cycloaddition with Wightman's chloronitroso derivative was totally regio- and stereoselective. This methodology was applied to the synthesis of heterospiranic frameworks after N-O bond cleavage and cyclization (see scheme; Boc=tert-butoxycarbonyl, Tf=trifluoromethanesulfonyl).
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Affiliation(s)
- Pierre Sancibrao
- Institut de Chimie Moléculaire et des Matériaux d'Orsay, Université de Paris-Sud, Orsay, France
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Yeh MCP, Liang CJ, Liu CY, Shih YF, Lee IC, Liu HF, Wang JL. Diastereoselective synthesis of vicinal cis-dihydroxyheterospirocycles by one-pot epoxidation/spirocyclization of C(3)-functionalized cyclohex-2-en-1-ols. Org Biomol Chem 2013; 11:3393-9. [DOI: 10.1039/c3ob27352k] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Affiliation(s)
- Ming-Chang P Yeh
- Department of Chemistry, National Taiwan Normal University, Taipei, Taiwan.
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50
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Yeh MCP, Liang CJ, Fan CW, Chiu WH, Lo JY. Synthesis of 2-azaspiro[4.6]undec-7-enes from N-tosyl-N-(3-arylpropargyl)-tethered 3-methylcyclohex-2-en-1-ols. J Org Chem 2012; 77:9707-17. [PMID: 23075326 DOI: 10.1021/jo301764g] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The FeCl(3)-promoted synthesis of 2-azaspiro[4.6]undec-7-ene rings proceeds via ring expansion/cyclization/chlorination of N-tosyl-N-(3-arylpropargyl)-tethered 6-methylbicyclo[4.1.0]heptan-2-ols. This azaspirocyclic ring skeleton can also be obtained in one pot from the tert-butyldimethylsilyl-protected N-tosyl-N-(3-arylpropargyl)-tethered 3-methylcyclohex-2-en-1-ols and diethylzinc/diiodomethane.
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Affiliation(s)
- Ming-Chang P Yeh
- Department of Chemistry, National Taiwan Normal University, 88 Ding-Jou Road, Section 4, Taipei 11677, Taiwan, Republic of China.
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