1
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Rufino VC, Pliego JR. Bifunctional iminophosphorane organocatalyst with additional hydrogen bonding: Calculations predict enhanced catalytic performance in a michael addition reaction. J Mol Graph Model 2024; 129:108760. [PMID: 38513601 DOI: 10.1016/j.jmgm.2024.108760] [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: 09/11/2023] [Revised: 02/29/2024] [Accepted: 03/11/2024] [Indexed: 03/23/2024]
Abstract
A new iminophosphorane-thiourea superbase was rationally designed and investigated as an organocatalyst for the enantioselective Michael addition reaction of nitromethane to 4-phenylbut-3-en-2-one. Starting from an iminophosphorane-thiourea organocatalyst structure already known, we have used theoretical calculations to determine the structures of transition states involved in the carbon-carbon bond formation step and carried out structural modifications to accelerate the reaction rate and to increase the enantioselectivity. The effective structural modification was adding a rigid hydroxyl group able to make an additional hydrogen bond to the transition state, producing a substantial decrease of the ΔG‡ by 7 kcal mol-1. The enantiomeric excess is predicted to be above of 97% using the reliable M06-2X and ωB97M - V functionals. The determination of the complete reaction mechanism and free energy profile was followed by a detailed microkinetic analysis. The present study points out a new direction for structural modifications on this kind of organocatalyst.
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Affiliation(s)
- Virginia C Rufino
- Departamento de Ciências Naturais, Universidade Federal de São João del-Rei, 36301-160, São João del-Rei, MG, Brazil
| | - Josefredo R Pliego
- Departamento de Ciências Naturais, Universidade Federal de São João del-Rei, 36301-160, São João del-Rei, MG, Brazil.
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2
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Mangas-Sánchez J, Ascaso-Alegre C. Cascade Processes Merging Chemical and Enzyme Catalysis. Synlett 2023. [DOI: 10.1055/s-0042-1751403] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
AbstractCascade processes are an attractive strategy to rapidly build molecular complexity and circumvent the need to isolate reaction intermediates, providing higher efficiencies into synthetic routes with lower environmental toll. We have recently developed a new method to synthesise chiral 1,4-nitro alcohols by sequentially combining three transformations in the same reaction vessel via asymmetric C–C bond formation using a chiral thiourea catalyst and a bioreduction process as key steps.1 Introduction2 A Chemoenzymatic Cascade to Make Chiral 1,4-Nitro Alcohols3 Conclusions and Perspectives
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Affiliation(s)
- Juan Mangas-Sánchez
- Institute of Chemical Synthesis and Homogeneous Catalysis (ISQCH) Spanish National Research Council (CSIC)
- Aragonese Foundation for Research & Development (ARAID)
| | - Christian Ascaso-Alegre
- Institute of Chemical Synthesis and Homogeneous Catalysis (ISQCH) Spanish National Research Council (CSIC)
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3
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Ascaso‐Alegre C, Herrera RP, Mangas‐Sánchez J. Stereoselective Three-Step One-Pot Cascade Combining Amino- and Biocatalysis to Access Chiral γ-Nitro Alcohols. Angew Chem Int Ed Engl 2022; 61:e202209159. [PMID: 35983936 PMCID: PMC9826084 DOI: 10.1002/anie.202209159] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2022] [Indexed: 01/11/2023]
Abstract
The combination of small-molecule catalysis and enzyme catalysis represents an underexploited area of research with huge potential in asymmetric synthetic chemistry due to both compatibility of reaction conditions and complementary reactivity. Herein, we describe the telescopic synthesis of chiral nitro alcohols starting from commercially available benzaldehyde derivatives through the one-pot three-step chemoenzymatic cascade combination of a Wittig reaction, chiral-thiourea-catalysed asymmetric conjugate addition, and ketoreductase-mediated reduction to access the corresponding target compounds in moderate to excellent overall isolated yields (36-80 %) and high diastereomeric and enantiomeric ratios (up to >97 : 3). This represents the first example of the combination of an organocatalysed asymmetric conjugate addition via iminium ion activation and a bioreduction step catalysed by ketoreductases.
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Affiliation(s)
- Christian Ascaso‐Alegre
- Institute of Chemical Synthesis and Homogeneous Catalysis (ISQCH)Spanish National Research Council (CSIC)—University of ZaragozaPedro Cerbuna 1250009ZaragozaSpain
| | - Raquel P. Herrera
- Institute of Chemical Synthesis and Homogeneous Catalysis (ISQCH)Spanish National Research Council (CSIC)—University of ZaragozaPedro Cerbuna 1250009ZaragozaSpain
| | - Juan Mangas‐Sánchez
- Institute of Chemical Synthesis and Homogeneous Catalysis (ISQCH)Spanish National Research Council (CSIC)—University of ZaragozaPedro Cerbuna 1250009ZaragozaSpain,ARAID Foundation50018ZaragozaSpain
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4
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Ascaso-Alegre C, P. Herrera R, Mangas-Sanchez J. Stereoselective Three‐Step One‐Pot Cascade Combining Amino‐ and Biocatalysis to Access Chiral Υ‐Nitro Alcohols. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202209159] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Christian Ascaso-Alegre
- CSIC: Consejo Superior de Investigaciones Cientificas Institute of Chemical Synthesis and Homogeneous Catalysis SPAIN
| | - Raquel P. Herrera
- CSIC: Consejo Superior de Investigaciones Cientificas Institute of Chemical Synthesis and Homogeneous Catalysis SPAIN
| | - Juan Mangas-Sanchez
- ARAID: Agencia Aragonesa para la Investigacion y Desarrollo ISQCH PEDRO CERBUNA, 12FACULTAD DE CIENCIAS D 50009 ZARAGOZA SPAIN
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5
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Ma R, Yang H, Ye L, Yang Q, Shi Z, Zhao Z, Li X. Stereoselective Synthesis of Chiral Hydrophenanthridines via a One-Pot Stepwise Aza-Michael/Michael/Michael Process. Org Lett 2022; 24:4798-4803. [PMID: 35758631 DOI: 10.1021/acs.orglett.2c01866] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A one-pot, two-step aza-Michael/Michael/Michael process was developed to diastereospecifically construct C6a,C10a-cis-hydrophenanthridines in a highly enantioselective manner (83-99% ee). The tricyclic products were provided in 50-99% isolated yields, sequentially promoted by bifunctional squaramide and diamine in a one-pot operation. This doubly annulative protocol indicated that the complicated polycyclic structures could be easily constructed via full employment of the available reaction sites of readily prepared precursors.
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Affiliation(s)
- Ruiying Ma
- Key Laboratory of General Chemistry of the National Ethnic Affairs Commission, Key Laboratory of Pollution Control Chemistry and Environmental Functional Materials for Qinghai-Tibet Plateau of the National Ethnic Affairs Commission, School of Chemistry and Environment, Southwest Minzu University, Chengdu 610041, China
| | - Hongzhou Yang
- Key Laboratory of General Chemistry of the National Ethnic Affairs Commission, Key Laboratory of Pollution Control Chemistry and Environmental Functional Materials for Qinghai-Tibet Plateau of the National Ethnic Affairs Commission, School of Chemistry and Environment, Southwest Minzu University, Chengdu 610041, China
| | - Ling Ye
- Faculty of Geosciences and Environmental Engineering, Southwest Jiaotong University, Chengdu 610031, China
| | - Qiang Yang
- Key Laboratory of General Chemistry of the National Ethnic Affairs Commission, Key Laboratory of Pollution Control Chemistry and Environmental Functional Materials for Qinghai-Tibet Plateau of the National Ethnic Affairs Commission, School of Chemistry and Environment, Southwest Minzu University, Chengdu 610041, China
| | - Zhichuan Shi
- Key Laboratory of General Chemistry of the National Ethnic Affairs Commission, Key Laboratory of Pollution Control Chemistry and Environmental Functional Materials for Qinghai-Tibet Plateau of the National Ethnic Affairs Commission, School of Chemistry and Environment, Southwest Minzu University, Chengdu 610041, China
| | - Zhigang Zhao
- Key Laboratory of General Chemistry of the National Ethnic Affairs Commission, Key Laboratory of Pollution Control Chemistry and Environmental Functional Materials for Qinghai-Tibet Plateau of the National Ethnic Affairs Commission, School of Chemistry and Environment, Southwest Minzu University, Chengdu 610041, China
| | - Xuefeng Li
- Key Laboratory of General Chemistry of the National Ethnic Affairs Commission, Key Laboratory of Pollution Control Chemistry and Environmental Functional Materials for Qinghai-Tibet Plateau of the National Ethnic Affairs Commission, School of Chemistry and Environment, Southwest Minzu University, Chengdu 610041, China
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6
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Ballini R, Palmieri A, Petrini M. Catalysts’ evolution in the asymmetric conjugate addition of nitroalkanes to electron-poor alkenes. Org Chem Front 2022. [DOI: 10.1039/d2qo01341j] [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
This review provides a journey of the catalyst usage for the enantioselective conjugate addition of nitroalkanes to electron-poor olefins from the early attempts to the latest achievements. Selected applications are also reported.
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Affiliation(s)
- Roberto Ballini
- School of Science and Technology, Chemistry Division, University of Camerino, CHIP, Via Madonna delle Carceri, 62032 Camerino, MC, Italy
| | - Alessandro Palmieri
- School of Science and Technology, Chemistry Division, University of Camerino, CHIP, Via Madonna delle Carceri, 62032 Camerino, MC, Italy
| | - Marino Petrini
- School of Science and Technology, Chemistry Division, University of Camerino, CHIP, Via Madonna delle Carceri, 62032 Camerino, MC, Italy
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7
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Rufino VC, Pliego JR. Bifunctional Primary Amino‐thiourea Asymmetric Catalysis: The Imine‐Iminium Ion Mechanism in the Michael Addition of Nitromethane to Enone. ASIAN J ORG CHEM 2021. [DOI: 10.1002/ajoc.202100160] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Virginia C. Rufino
- Departamento de Ciências Naturais Universidade Federal de São João del-Rei 36301-160 São João del-Rei MG Brazil
| | - Josefredo R. Pliego
- Departamento de Ciências Naturais Universidade Federal de São João del-Rei 36301-160 São João del-Rei MG Brazil
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8
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Yu SJ, Zhu YN, Ye JL, Huang PQ. A versatile approach to functionalized cyclic ketones bearing quaternary carbon stereocenters via organocatalytic asymmetric conjugate addition of nitroalkanes to cyclic β-substituted α,β-Enones. Tetrahedron 2021. [DOI: 10.1016/j.tet.2021.132005] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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9
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Luo S, Huang X, Guo L, Huang P. Catalytic Asymmetric Total Synthesis of Macrocyclic Marine Natural Product (–)‐Haliclonin A
†. CHINESE J CHEM 2020. [DOI: 10.1002/cjoc.202000291] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Shi‐Peng Luo
- Department of Chemistry and The Key Laboratory for Chemical Biology of Fujian Province, College of Chemistry and Chemical Engineering, Xiamen University Xiamen Fujian 361005 China
- School of Chemistry and Environmental Engineering, Jiangsu University of Technology Changzhou Jiangsu 213001 China
| | - Xiong‐Zhi Huang
- Department of Chemistry and The Key Laboratory for Chemical Biology of Fujian Province, College of Chemistry and Chemical Engineering, Xiamen University Xiamen Fujian 361005 China
| | - Lian‐Dong Guo
- Department of Chemistry and The Key Laboratory for Chemical Biology of Fujian Province, College of Chemistry and Chemical Engineering, Xiamen University Xiamen Fujian 361005 China
| | - Pei‐Qiang Huang
- Department of Chemistry and The Key Laboratory for Chemical Biology of Fujian Province, College of Chemistry and Chemical Engineering, Xiamen University Xiamen Fujian 361005 China
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10
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Kozma V, Fülöp F, Szőllősi G. 1,2‐Diamine‐Derived (thio)Phosphoramide Organocatalysts in Asymmetric Michael Additions. Adv Synth Catal 2020. [DOI: 10.1002/adsc.202000335] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Viktória Kozma
- Department of Organic ChemistryUniversity of Szeged 6720 Szeged Dóm tér 8 Hungary
| | - Ferenc Fülöp
- Institute of Pharmaceutical ChemistryUniversity of Szeged 6720 Szeged Eötvös utca 6 Hungary
- MTA-SZTE Stereochemistry Research GroupUniversity of Szeged 6720 Szeged Eötvös utca 6 Hungary
- University of Szeged, Interdisciplinary Excellence CentreInstitute of Pharmaceutical Chemistry 6720 Szeged Eötvös utca 6 Hungary
| | - György Szőllősi
- MTA-SZTE Stereochemistry Research GroupUniversity of Szeged 6720 Szeged Eötvös utca 6 Hungary
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11
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Steppeler F, Iwan D, Wojaczyńska E, Wojaczyński J. Chiral Thioureas-Preparation and Significance in Asymmetric Synthesis and Medicinal Chemistry. Molecules 2020; 25:E401. [PMID: 31963671 PMCID: PMC7024223 DOI: 10.3390/molecules25020401] [Citation(s) in RCA: 31] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2019] [Revised: 01/14/2020] [Accepted: 01/16/2020] [Indexed: 01/23/2023] Open
Abstract
For almost 20 years, thioureas have been experiencing a renaissance of interest with the emerged development of asymmetric organocatalysts. Due to their relatively high acidity and strong hydrogen bond donor capability, they differ significantly from ureas and offer, appropriately modified, great potential as organocatalysts, chelators, drug candidates, etc. The review focuses on the family of chiral thioureas, presenting an overview of the current state of knowledge on their synthesis and selected applications in stereoselective synthesis and drug development.
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Affiliation(s)
- Franz Steppeler
- Faculty of Chemistry, Wrocław University of Science and Technology, Wybrzeże Wyspiańskiego 27, 50 370 Wrocław, Poland; (F.S.); (D.I.)
| | - Dominika Iwan
- Faculty of Chemistry, Wrocław University of Science and Technology, Wybrzeże Wyspiańskiego 27, 50 370 Wrocław, Poland; (F.S.); (D.I.)
| | - Elżbieta Wojaczyńska
- Faculty of Chemistry, Wrocław University of Science and Technology, Wybrzeże Wyspiańskiego 27, 50 370 Wrocław, Poland; (F.S.); (D.I.)
| | - Jacek Wojaczyński
- Faculty of Chemistry, University of Wrocław, 14 F. Joliot-Curie St., 50 383 Wrocław, Poland;
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12
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Feng KX, Shen QY, Zheng YY, Xia AB, Zhou ZY, Tang CK, Zhong AG, Xu DQ, Du XH. Aminocatalytic Enantioselective 1, 6-Addition of (Nitromethyl)benzenes to α, β, γ, δ-Cyclic Dienones. European J Org Chem 2019. [DOI: 10.1002/ejoc.201901134] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Kai-Xiang Feng
- State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology; Key Laboratory of Green Pesticides and Cleaner Production Technology of Zhejiang Province; Zhejiang University of Technology; 310014 Hangzhou P. R. China
| | - Qiao-Yu Shen
- State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology; Key Laboratory of Green Pesticides and Cleaner Production Technology of Zhejiang Province; Zhejiang University of Technology; 310014 Hangzhou P. R. China
| | - Ya-Yun Zheng
- State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology; Key Laboratory of Green Pesticides and Cleaner Production Technology of Zhejiang Province; Zhejiang University of Technology; 310014 Hangzhou P. R. China
| | - Ai-Bao Xia
- State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology; Key Laboratory of Green Pesticides and Cleaner Production Technology of Zhejiang Province; Zhejiang University of Technology; 310014 Hangzhou P. R. China
| | - Zhan-Yu Zhou
- State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology; Key Laboratory of Green Pesticides and Cleaner Production Technology of Zhejiang Province; Zhejiang University of Technology; 310014 Hangzhou P. R. China
| | - Cheng-Ke Tang
- State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology; Key Laboratory of Green Pesticides and Cleaner Production Technology of Zhejiang Province; Zhejiang University of Technology; 310014 Hangzhou P. R. China
| | - Ai-Guo Zhong
- Department of Pharmaceutical and Chemical Engineering; Taizhou College; 317000 Linhai Zhejiang China
| | - Dan-Qian Xu
- State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology; Key Laboratory of Green Pesticides and Cleaner Production Technology of Zhejiang Province; Zhejiang University of Technology; 310014 Hangzhou P. R. China
| | - Xiao-Hua Du
- State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology; Key Laboratory of Green Pesticides and Cleaner Production Technology of Zhejiang Province; Zhejiang University of Technology; 310014 Hangzhou P. R. China
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13
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Rufino VC, Pliego JR. Is the iminium ion mechanism viable in the piperidine-catalyzed 1,4-conjugate addition reaction of nitroalkanes to α,β-unsaturated ketones? COMPUT THEOR CHEM 2019. [DOI: 10.1016/j.comptc.2019.112541] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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14
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Asymmetric organocatalytic cascade Michael/acyl transfer reaction of 2-hydroxychalcones with α-nitroketones. Tetrahedron 2019. [DOI: 10.1016/j.tet.2019.03.021] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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15
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Maity R, Sahoo SC, Pan SC. Organocatalytic Asymmetric Michael-Acyl Transfer Reaction of α-Nitroketones with 2-Hydroxybenzylidene Ketones. European J Org Chem 2019. [DOI: 10.1002/ejoc.201900069] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Rajendra Maity
- Department of Chemistry; Indian Institute of Technology Guwahati; Assam 781039 India
| | - Subas Chandra Sahoo
- Department of Chemistry; Indian Institute of Technology Guwahati; Assam 781039 India
| | - Subas Chandra Pan
- Department of Chemistry; Indian Institute of Technology Guwahati; Assam 781039 India
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16
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Lisnyak VG, Lynch-Colameta T, Snyder SA. Mannich-type Reactions of Cyclic Nitrones: Effective Methods for the Enantioselective Synthesis of Piperidine-containing Alkaloids. Angew Chem Int Ed Engl 2018; 57:15162-15166. [PMID: 30276949 PMCID: PMC7199385 DOI: 10.1002/anie.201809799] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2018] [Revised: 09/26/2018] [Indexed: 12/21/2022]
Abstract
Even though there are dozens of biologically active 2-substituted and 2,6-disubstituted piperidines, only a limited number of approaches exist for their synthesis. Herein is described two Mannich-type additions to nitrones, one using β-ketoacids under catalyst-free conditions and another using methyl ketones in the presence of chiral thioureas, which can generate a broad array of such 2-substituted materials, as well as other ring variants, in the form of β-N-hydroxy-aminoketones. Both processes have broad scope, with the latter providing products with high enantioselectivity (up to 98 %). The combination of these methods, along with other critical steps, has enabled 8-step total syntheses of the 2,6-disubstituted piperidine alkaloids (-)-lobeline and (-)-sedinone.
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Affiliation(s)
- Vladislav G Lisnyak
- Department of Chemistry, University of Chicago, 5735 S. Ellis Avenue, Chicago, IL, 60637, USA
| | - Tessa Lynch-Colameta
- Department of Chemistry, University of Chicago, 5735 S. Ellis Avenue, Chicago, IL, 60637, USA
| | - Scott A Snyder
- Department of Chemistry, University of Chicago, 5735 S. Ellis Avenue, Chicago, IL, 60637, USA
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17
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Lisnyak VG, Lynch‐Colameta T, Snyder SA. Mannich‐type Reactions of Cyclic Nitrones: Effective Methods for the Enantioselective Synthesis of Piperidine‐containing Alkaloids. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201809799] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Vladislav G. Lisnyak
- Department of ChemistryUniversity of Chicago 5735 S. Ellis Avenue Chicago IL 60637 USA
| | - Tessa Lynch‐Colameta
- Department of ChemistryUniversity of Chicago 5735 S. Ellis Avenue Chicago IL 60637 USA
| | - Scott A. Snyder
- Department of ChemistryUniversity of Chicago 5735 S. Ellis Avenue Chicago IL 60637 USA
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18
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Mondal K, Pan SC. Organocatalytic Asymmetric Domino Michael/Acyl Transfer Reaction between γ/δ-Hydroxyenones and α-Nitroketones. J Org Chem 2018; 83:5301-5312. [DOI: 10.1021/acs.joc.8b00436] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Keshab Mondal
- Department of Chemistry, Indian Institute of Technology Guwahati, North Guwahati, Assam 781039, India
| | - Subhas Chandra Pan
- Department of Chemistry, Indian Institute of Technology Guwahati, North Guwahati, Assam 781039, India
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19
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Cholewiak A, Adamczyk K, Kopyt M, Kasztelan A, Kwiatkowski P. High pressure-assisted low-loading asymmetric organocatalytic conjugate addition of nitroalkanes to chalcones. Org Biomol Chem 2018; 16:4365-4371. [DOI: 10.1039/c8ob00561c] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A highly enantioselective and relatively fast (1–5 h) Michael reaction with substantial reduction of organocatalyst loading (0.2–1 mol%) was developed under high-pressure conditions (up to 9 kbar) and at room temperature.
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Affiliation(s)
| | - Kamil Adamczyk
- Faculty of Chemistry
- University of Warsaw
- 02-093 Warsaw
- Poland
| | - Michał Kopyt
- Faculty of Chemistry
- University of Warsaw
- 02-093 Warsaw
- Poland
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20
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Albuquerque HMT, Santos CMM, Balanay MP, Cavaleiro JAS, Silva AMS. 1,6-Conjugate Additions of Carbon Nucleophiles to 2-[(1 E,3 E)-4-Arylbuta-1,3-dien-1-yl]-4 H-chromen-4-ones. European J Org Chem 2017. [DOI: 10.1002/ejoc.201700944] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Hélio M. T. Albuquerque
- Department of Chemistry & QOPNA; University of Aveiro; Campus de Santiago 3810-193 Aveiro Portugal
| | - Clementina M. M. Santos
- Department of Chemistry & QOPNA; University of Aveiro; Campus de Santiago 3810-193 Aveiro Portugal
- School of Agriculture; Polytechnic Institute of Bragança; Campus de Santa Apolónia 5300-253 Bragança Portugal
| | - Mannix P. Balanay
- Department of Chemistry; Nazarbayev University; 53 Kabanbay Batyr Ave, Block 7 010000 Astana Kazakhstan
| | - José A. S. Cavaleiro
- Department of Chemistry & QOPNA; University of Aveiro; Campus de Santiago 3810-193 Aveiro Portugal
| | - Artur M. S. Silva
- Department of Chemistry & QOPNA; University of Aveiro; Campus de Santiago 3810-193 Aveiro Portugal
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21
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Kawada M, Nakashima K, Hirashima SI, Yoshida A, Koseki Y, Miura T. Asymmetric Conjugate Addition of Nitroalkanes to Enones Using a Sulfonamide–Thiourea Organocatalyst. J Org Chem 2017; 82:6986-6991. [PMID: 28605586 DOI: 10.1021/acs.joc.7b00835] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Masahiro Kawada
- Tokyo University of Pharmacy and Life Sciences, 1432-1
Horinouchi, Hachioji, Tokyo 192-0392, Japan
| | - Kosuke Nakashima
- Tokyo University of Pharmacy and Life Sciences, 1432-1
Horinouchi, Hachioji, Tokyo 192-0392, Japan
| | - Shin-ichi Hirashima
- Tokyo University of Pharmacy and Life Sciences, 1432-1
Horinouchi, Hachioji, Tokyo 192-0392, Japan
| | - Akihiro Yoshida
- Tokyo University of Pharmacy and Life Sciences, 1432-1
Horinouchi, Hachioji, Tokyo 192-0392, Japan
| | - Yuji Koseki
- Tokyo University of Pharmacy and Life Sciences, 1432-1
Horinouchi, Hachioji, Tokyo 192-0392, Japan
| | - Tsuyoshi Miura
- Tokyo University of Pharmacy and Life Sciences, 1432-1
Horinouchi, Hachioji, Tokyo 192-0392, Japan
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22
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Yang J, Qiu G, Jiang J, Hu Y, Chen S, Zhang S, Zhang Y. Asymmetric Organocatalytic Synthesis of Benzopyran- and Benzofuran-Fused Polycyclic Acetals. Adv Synth Catal 2017. [DOI: 10.1002/adsc.201601335] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Jiyang Yang
- Jiangsu Key Laboratory of Translational Research and Therapy for Neuro-Psycho-Diseases & Department of Medicinal Chemistry, College of Pharmaceutical Sciences; Soochow University; Suzhou 215123 People's Republic of China
| | - Gang Qiu
- Jiangsu Key Laboratory of Translational Research and Therapy for Neuro-Psycho-Diseases & Department of Medicinal Chemistry, College of Pharmaceutical Sciences; Soochow University; Suzhou 215123 People's Republic of China
- Haiyan People's Hospital; 901 South Yanhu Road, Wuyuan Street Haiyan, Zhejiang 314300 People's Republic of China
| | - Jing Jiang
- Jiangsu Key Laboratory of Translational Research and Therapy for Neuro-Psycho-Diseases & Department of Medicinal Chemistry, College of Pharmaceutical Sciences; Soochow University; Suzhou 215123 People's Republic of China
| | - Yanwei Hu
- Jiangsu Key Laboratory of Translational Research and Therapy for Neuro-Psycho-Diseases & Department of Medicinal Chemistry, College of Pharmaceutical Sciences; Soochow University; Suzhou 215123 People's Republic of China
| | - Shaohua Chen
- Jiangsu Key Laboratory of Translational Research and Therapy for Neuro-Psycho-Diseases & Department of Medicinal Chemistry, College of Pharmaceutical Sciences; Soochow University; Suzhou 215123 People's Republic of China
| | - Shilei Zhang
- Jiangsu Key Laboratory of Translational Research and Therapy for Neuro-Psycho-Diseases & Department of Medicinal Chemistry, College of Pharmaceutical Sciences; Soochow University; Suzhou 215123 People's Republic of China
| | - Yinan Zhang
- Jiangsu Key Laboratory of Translational Research and Therapy for Neuro-Psycho-Diseases & Department of Medicinal Chemistry, College of Pharmaceutical Sciences; Soochow University; Suzhou 215123 People's Republic of China
- College of Pharmacy; University of Kentucky; 789 South Limestone Street Lexington, Kentucky 40536 USA
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23
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Double Michael addition of nitromethane to divinyl ketones: A remarkably positive effect of additive. Tetrahedron 2017. [DOI: 10.1016/j.tet.2017.03.018] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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24
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Zhang G, Zhu C, Liu D, Pan J, Zhang J, Hu D, Song B. Solvent-free enantioselective conjugate addition and bioactivities of nitromethane to Chalcone containing pyridine. Tetrahedron 2017. [DOI: 10.1016/j.tet.2016.11.063] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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25
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Yin F, Garifullina A, Tanaka F. Synthesis of pyrrolidine-3-carboxylic acid derivatives via asymmetric Michael addition reactions of carboxylate-substituted enones. Org Biomol Chem 2017; 15:6089-6092. [DOI: 10.1039/c7ob01484h] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
An enantioselective Michael addition reaction system was developed. Using the reaction system, 5-methylpyrrolidine-3-carboxylic acid was synthesized in two steps.
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Affiliation(s)
- Feng Yin
- Chemistry and Chemical Bioengineering Unit
- Okinawa Institute of Science and Technology Graduate University
- Onna
- Japan
| | - Ainash Garifullina
- Chemistry and Chemical Bioengineering Unit
- Okinawa Institute of Science and Technology Graduate University
- Onna
- Japan
| | - Fujie Tanaka
- Chemistry and Chemical Bioengineering Unit
- Okinawa Institute of Science and Technology Graduate University
- Onna
- Japan
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26
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A general, highly enantioselective Michael addition of nitroalkanes to α,β-unsaturated enones catalyzed by 9-amino(9-deoxy)-epi-quinine: a remarkable additive effect. Tetrahedron 2016. [DOI: 10.1016/j.tet.2016.07.008] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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27
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Ueda A, Umeno T, Doi M, Akagawa K, Kudo K, Tanaka M. Helical-Peptide-Catalyzed Enantioselective Michael Addition Reactions and Their Mechanistic Insights. J Org Chem 2016; 81:6343-56. [PMID: 27384597 DOI: 10.1021/acs.joc.6b00982] [Citation(s) in RCA: 43] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Helical peptide foldamer catalyzed Michael addition reactions of nitroalkane or dialkyl malonate to α,β-unsaturated ketones are reported along with the mechanistic considerations of the enantio-induction. A wide variety of α,β-unsaturated ketones, including β-aryl, β-alkyl enones, and cyclic enones, were found to be catalyzed by the helical peptide to give Michael adducts with high enantioselectivities (up to 99%). On the basis of X-ray crystallographic analysis and depsipeptide study, the amide protons, N(2)-H and N(3)-H, at the N terminus in the α-helical peptide catalyst were crucial for activating Michael donors, while the N-terminal primary amine activated Michael acceptors through the formation of iminium ion intermediates.
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Affiliation(s)
- Atsushi Ueda
- Graduate School of Biomedical Sciences, Nagasaki University , 1-14 Bunkyo-machi, Nagasaki 852-8521, Japan
| | - Tomohiro Umeno
- Graduate School of Biomedical Sciences, Nagasaki University , 1-14 Bunkyo-machi, Nagasaki 852-8521, Japan
| | - Mitsunobu Doi
- Osaka University of Pharmaceutical Sciences , Osaka 569-1094, Japan
| | - Kengo Akagawa
- Institute of Industrial Science, The University of Tokyo , Tokyo 153-8505, Japan
| | - Kazuaki Kudo
- Institute of Industrial Science, The University of Tokyo , Tokyo 153-8505, Japan
| | - Masakazu Tanaka
- Graduate School of Biomedical Sciences, Nagasaki University , 1-14 Bunkyo-machi, Nagasaki 852-8521, Japan
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28
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Wu S, Li Y, Zhang Y, Fang K, Dong G, Liu N, Miao Z, Yao J, Wang W, Zhang W, Sheng C. Enantioselective organocatalytic Michael addition of isorhodanines to α,β-unsaturated aldehydes. Org Biomol Chem 2016; 14:3926-33. [PMID: 27044054 DOI: 10.1039/c5ob02457a] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The Michael reaction of substituted isorhodanines with α,β-unsaturated aldehydes in the presence of a catalytic amount of a chiral secondary amine is presented. This transformation proceeds in good to high yields furnishing the corresponding 4,5-disubstituted isorhodanine adducts in good to excellent enantioselectivities.
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Affiliation(s)
- Shanchao Wu
- Department of Medicinal Chemistry, School of Pharmacy, Second Military Medical University, 325 Guohe Road, Shanghai 200433, P. R. China.
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29
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Guo LD, Huang XZ, Luo SP, Cao WS, Ruan YP, Ye JL, Huang PQ. Organocatalytic, Asymmetric Total Synthesis of (−)-Haliclonin A. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201512005] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Affiliation(s)
- Lian-Dong Guo
- Department of Chemistry and The Key Laboratory for Chemical Biology of Fujian Province; iChEM(Collaborative Innovation Center of Chemistry for Energy Materials); College of Chemistry and Chemical Engineering; Xiamen University; Xiamen Fujian 361005 P.R. China
| | - Xiong-Zhi Huang
- Department of Chemistry and The Key Laboratory for Chemical Biology of Fujian Province; iChEM(Collaborative Innovation Center of Chemistry for Energy Materials); College of Chemistry and Chemical Engineering; Xiamen University; Xiamen Fujian 361005 P.R. China
| | - Shi-Peng Luo
- Department of Chemistry and The Key Laboratory for Chemical Biology of Fujian Province; iChEM(Collaborative Innovation Center of Chemistry for Energy Materials); College of Chemistry and Chemical Engineering; Xiamen University; Xiamen Fujian 361005 P.R. China
| | - Wen-Sen Cao
- Department of Chemistry and The Key Laboratory for Chemical Biology of Fujian Province; iChEM(Collaborative Innovation Center of Chemistry for Energy Materials); College of Chemistry and Chemical Engineering; Xiamen University; Xiamen Fujian 361005 P.R. China
| | - Yuan-Ping Ruan
- Department of Chemistry and The Key Laboratory for Chemical Biology of Fujian Province; iChEM(Collaborative Innovation Center of Chemistry for Energy Materials); College of Chemistry and Chemical Engineering; Xiamen University; Xiamen Fujian 361005 P.R. China
| | - Jian-Liang Ye
- Department of Chemistry and The Key Laboratory for Chemical Biology of Fujian Province; iChEM(Collaborative Innovation Center of Chemistry for Energy Materials); College of Chemistry and Chemical Engineering; Xiamen University; Xiamen Fujian 361005 P.R. China
| | - Pei-Qiang Huang
- Department of Chemistry and The Key Laboratory for Chemical Biology of Fujian Province; iChEM(Collaborative Innovation Center of Chemistry for Energy Materials); College of Chemistry and Chemical Engineering; Xiamen University; Xiamen Fujian 361005 P.R. China
- State Key Laboratory of Applied Organic Chemistry Lanzhou University; Lanzhou 730000 P.R. China
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30
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Guo LD, Huang XZ, Luo SP, Cao WS, Ruan YP, Ye JL, Huang PQ. Organocatalytic, Asymmetric Total Synthesis of (−)-Haliclonin A. Angew Chem Int Ed Engl 2016; 55:4064-8. [DOI: 10.1002/anie.201512005] [Citation(s) in RCA: 52] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2015] [Indexed: 01/17/2023]
Affiliation(s)
- Lian-Dong Guo
- Department of Chemistry and The Key Laboratory for Chemical Biology of Fujian Province; iChEM (Collaborative Innovation Center of Chemistry for Energy Materials); College of Chemistry and Chemical Engineering; Xiamen University; Xiamen Fujian 361005 P.R. China
| | - Xiong-Zhi Huang
- Department of Chemistry and The Key Laboratory for Chemical Biology of Fujian Province; iChEM (Collaborative Innovation Center of Chemistry for Energy Materials); College of Chemistry and Chemical Engineering; Xiamen University; Xiamen Fujian 361005 P.R. China
| | - Shi-Peng Luo
- Department of Chemistry and The Key Laboratory for Chemical Biology of Fujian Province; iChEM (Collaborative Innovation Center of Chemistry for Energy Materials); College of Chemistry and Chemical Engineering; Xiamen University; Xiamen Fujian 361005 P.R. China
| | - Wen-Sen Cao
- Department of Chemistry and The Key Laboratory for Chemical Biology of Fujian Province; iChEM (Collaborative Innovation Center of Chemistry for Energy Materials); College of Chemistry and Chemical Engineering; Xiamen University; Xiamen Fujian 361005 P.R. China
| | - Yuan-Ping Ruan
- Department of Chemistry and The Key Laboratory for Chemical Biology of Fujian Province; iChEM (Collaborative Innovation Center of Chemistry for Energy Materials); College of Chemistry and Chemical Engineering; Xiamen University; Xiamen Fujian 361005 P.R. China
| | - Jian-Liang Ye
- Department of Chemistry and The Key Laboratory for Chemical Biology of Fujian Province; iChEM (Collaborative Innovation Center of Chemistry for Energy Materials); College of Chemistry and Chemical Engineering; Xiamen University; Xiamen Fujian 361005 P.R. China
| | - Pei-Qiang Huang
- Department of Chemistry and The Key Laboratory for Chemical Biology of Fujian Province; iChEM (Collaborative Innovation Center of Chemistry for Energy Materials); College of Chemistry and Chemical Engineering; Xiamen University; Xiamen Fujian 361005 P.R. China
- State Key Laboratory of Applied Organic Chemistry Lanzhou University; Lanzhou 730000 P.R. China
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31
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Yu L, Yang Z, Peng J, Li P. Substrate-Controlled Synthesis of Functionalized Cyclohexanes with Four Stereocenters by Organocatalytic Asymmetric Domino Reactions Between γ-Nitro Ketone and Enone. European J Org Chem 2015. [DOI: 10.1002/ejoc.201501303] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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32
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Akagawa K, Nishi N, Yoshikawa I, Kudo K. Kinetic Resolution of a Planar-Chiral [2.2]Paracyclophane Derivative by Helical-Peptide-Catalyzed Michael Addition of Nitromethane. European J Org Chem 2015. [DOI: 10.1002/ejoc.201500594] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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33
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One-pot three-component reaction for efficient and facile synthesis of γ-nitrocarbonyl compounds under solvent-free conditions. Chem Res Chin Univ 2015. [DOI: 10.1007/s40242-015-4410-1] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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34
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Lu A, Wang J, Liu T, Han J, Li Y, Su M, Chen J, Zhang H, Wang L, Wang Q. Small changes result in large differences: discovery of (-)-incrustoporin derivatives as novel antiviral and antifungal agents. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2014; 62:8799-8807. [PMID: 25116598 DOI: 10.1021/jf503060k] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
On the basis of the structure of natural product (-)-incrustoporin (1), a series of lactone compounds 4a-i and 5a-i were designed and synthesized from nitroolefin. The antiviral and antifungal activities of these compounds were evaluated in vitro and in vivo. The small changes between 4 and 5 at the 3,4-position result in large differences in bioactivities. Compounds 4 exhibited significantly higher antiviral activity against tobacco mosaic virus (TMV) than dehydro compounds 5. However, the antifungal activity of 4 is relatively lower than that of 5. Compounds 4a, 4c, and 4i with excellent in vivo anti-TMV activity emerged as new antiviral lead compounds. Compounds 5d-g showed superiority over the commercial fungicides chlorothalonil and carbendazim against Cercospora arachidicola Hor at 50 mg kg(-1). The present study provides fundamental support for the development and optimization of (-)-incrustoporin derivatives as potential inhibitors of plant virus and pathogenic fungi.
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Affiliation(s)
- Aidang Lu
- School of Marine Science and Engineering and ‡School of Chemical Engineering, Hebei University of Technology , Tianjin 300130, China
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35
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Kawai H, Shibata N. Asymmetric Synthesis of Agrochemically Attractive Trifluoromethylated Dihydroazoles and Related Compounds under Organocatalysis. CHEM REC 2014; 14:1024-40. [DOI: 10.1002/tcr.201402023] [Citation(s) in RCA: 53] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2014] [Indexed: 11/10/2022]
Affiliation(s)
- Hiroyuki Kawai
- Department of Nanopharmaceutical Science and Department of Frontier Materials; Graduate School of Engineering; Nagoya Institute of Technology; Gokiso Showa-ku Nagoya 466-8555 Japan
| | - Norio Shibata
- Department of Nanopharmaceutical Science and Department of Frontier Materials; Graduate School of Engineering; Nagoya Institute of Technology; Gokiso Showa-ku Nagoya 466-8555 Japan
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36
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Akagawa K, Suzuki R, Kudo K. Development of a Peptide-Based Primary Aminocatalyst with a Helical Structure. ASIAN J ORG CHEM 2014. [DOI: 10.1002/ajoc.201400028] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
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37
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Tsakos M, Kokotos CG. Primary and secondary amine-(thio)ureas and squaramides and their applications in asymmetric organocatalysis. Tetrahedron 2013. [DOI: 10.1016/j.tet.2013.09.080] [Citation(s) in RCA: 109] [Impact Index Per Article: 9.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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38
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Kopel LC, Ahmed MS, Halaweish FT. Synthesis of novel estrone analogs by incorporation of thiophenols via conjugate addition to an enone side chain. Steroids 2013; 78:1119-25. [PMID: 23899492 DOI: 10.1016/j.steroids.2013.07.005] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/10/2013] [Revised: 07/09/2013] [Accepted: 07/18/2013] [Indexed: 12/24/2022]
Abstract
Functionalized estrogen analogs have received interest due to their unique and differing biological activity compared to their parent compounds. The synthesis of a new class of 3-methoxyestrone analogs functionalized at the C17 position possessing both alkyl and aryl substituted α,β-unsaturated ketones is described, along with their thiophenol conjugate addition products.
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Affiliation(s)
- Lucas C Kopel
- Department of Chemistry & Biochemistry, South Dakota State University, Brookings, SD, USA
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39
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Heo S, Kim S, Kim SG. Organocatalytic enantioselective conjugate addition–cyclization domino reactions of o-N-protected aminophenyl α,β-unsaturated aldehydes. Tetrahedron Lett 2013. [DOI: 10.1016/j.tetlet.2013.07.031] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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40
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Highly enantioselective conjugate addition of nitroalkanes to enones catalyzed by cinchona alkaloid derived primary amine. Tetrahedron Lett 2013. [DOI: 10.1016/j.tetlet.2013.05.019] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
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41
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Zhou Y, Liu Q, Gong Y. Organocatalytic asymmetric Michael addition of ethyl nitroacetate to enones using natural amino acids-derived C1-symmetric chiral primary–secondary diamines. Tetrahedron Lett 2013. [DOI: 10.1016/j.tetlet.2013.04.005] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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42
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43
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Kim JH, Park EJ, Lee HJ, Ho XH, Yoon HS, Kim P, Yun H, Jang HY. Tandem Iminium/Copper Catalysis: Highly Enantioselective Synthesis of α,β-Disubstituted Aldehydes. European J Org Chem 2013. [DOI: 10.1002/ejoc.201300333] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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44
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Li T, Zhu J, Wu D, Li X, Wang S, Li H, Li J, Wang W. A Strategy Enabling Enantioselective Direct Conjugate Addition of Inert Aryl Methane Nucleophiles to Enals with a Chiral Amine Catalyst under Mild Conditions. Chemistry 2013; 19:9147-50. [DOI: 10.1002/chem.201300304] [Citation(s) in RCA: 74] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2013] [Indexed: 12/20/2022]
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45
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Kawai H, Yuan Z, Kitayama T, Tokunaga E, Shibata N. Efficient Access to Trifluoromethyl Diarylpyrrolines and their N-Oxides through Enantioselective Conjugate Addition of Nitromethane to β,β-Disubstituted Enones. Angew Chem Int Ed Engl 2013. [DOI: 10.1002/ange.201301123] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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46
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Kawai H, Yuan Z, Kitayama T, Tokunaga E, Shibata N. Efficient Access to Trifluoromethyl Diarylpyrrolines and their N-Oxides through Enantioselective Conjugate Addition of Nitromethane to β,β-Disubstituted Enones. Angew Chem Int Ed Engl 2013; 52:5575-9. [PMID: 23606581 DOI: 10.1002/anie.201301123] [Citation(s) in RCA: 86] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2013] [Revised: 04/10/2013] [Indexed: 11/11/2022]
Affiliation(s)
- Hiroyuki Kawai
- Department of Frontier Materials, Graduate School of Engineering, Nagoya Institute of Technology, Gokiso, Showa-ku, Nagoya 466-8555, Japan
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47
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Zhou Y, Liu Q, Gong Y. Camphor-derived C1-symmetric chiral diamine organocatalysts for asymmetric Michael addition of nitroalkanes to enones. Org Biomol Chem 2013; 10:7618-27. [PMID: 22893041 DOI: 10.1039/c2ob25922b] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A series of stable C(1)-symmetric chiral diamines (2a–2l) were conveniently synthesized by condensing exo-(-)-bornylamine or (+)-(1S,2S,5R)-menthylamine with various commercially available Cbz-protected amino acids. Among them, 2a can efficiently promote the Michael addition of nitroalkanes to a broad scope of enones with high yields (up to 96%) and excellent enantioselectivities (up to 98%) under mild conditions.
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Affiliation(s)
- Yirong Zhou
- School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, 1037 Luoyu Road, Wuhan 430074, People's Republic of China
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48
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Blay G, Incerti C, Muñoz MC, Pedro JR. Enantioselective LaIII-pyBOX-Catalyzed Nitro-Michael Addition to (E)-2-Azachalcones. European J Org Chem 2013. [DOI: 10.1002/ejoc.201201579] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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49
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Orlandi S, Pozzi G, Ghisetti M, Benaglia M. Synthesis and catalytic activity of fluorous chiral primary amine-thioureas. NEW J CHEM 2013. [DOI: 10.1039/c3nj00807j] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
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50
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Albertshofer K, Anderson KE, Barbas CF. Assembly of Spirooxindole Derivatives via Organocatalytic Iminium-Enamine Cascade Reactions. Org Lett 2012; 14:5968-71. [DOI: 10.1021/ol302876c] [Citation(s) in RCA: 50] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Klaus Albertshofer
- The Skaggs Institute for Chemical Biology and the Departments of Chemistry and Molecular Biology, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, California 92037, United States
| | - Kimberly E. Anderson
- The Skaggs Institute for Chemical Biology and the Departments of Chemistry and Molecular Biology, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, California 92037, United States
| | - Carlos F. Barbas
- The Skaggs Institute for Chemical Biology and the Departments of Chemistry and Molecular Biology, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, California 92037, United States
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