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Porras-Santos LF, Sandoval-Lira J, Hernández-Pérez JM, Quintero L, López-Mendoza P, Sartillo-Piscil F. Ferrier Glycosylation Mediated by the TEMPO Oxoammonium Cation. J Org Chem 2024. [PMID: 39102649 DOI: 10.1021/acs.joc.4c00978] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/07/2024]
Abstract
The TEMPO oxoammonium cation has been proven to be both an efficient oxidizing reagent and an electrophilic substrate frequently found in organic reactions. Here, we report that this versatile chemical reagent can also be used as an efficient promoter for C- and N-glycosylation reactions through a Ferrier rearrangement with moderate to high yields. This unprecedented reactivity is explained in terms of a Lewis acid activation of glycal by TEMPO+ forming a type of glycal-TEMPO+ mesomeric structure, which occurs through an extended vinylogous hyperconjugation toward the π*(O═N+) orbital [LP(O1) → π*(C1═C2), π*(C1═C2) → σ*(C3-O3), and LP(O6) → π*(O═N+)]. This enables the formation of the respective Ferrier glycosyl cation, which is trapped by various nucleophiles. The extended hyperconjugation (or double hyperconjugation) toward the π*(O═N+) orbital, which confers the Lewis acid character of the TEMPO cation, was supported by natural bond orbital analysis at the M06-2X/6-311+G** level of theory.
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Affiliation(s)
- Luis F Porras-Santos
- Centro de Investigación de la Facultad de Ciencias Químicas, Benemérita Universidad Autónoma de Puebla (BUAP), 14 Sur Esq. San Claudio, Col. San Manuel 72570, Puebla, Mexico
| | - Jacinto Sandoval-Lira
- Departamento de Ciencias Básicas, TecNM campus Instituto Tecnológico Superior de San Martín Texmelucan, Camino a la Barranca de Pesos, San Martín Texmelucan 74120, Puebla, Mexico
| | - Julio M Hernández-Pérez
- Centro de Investigación de la Facultad de Ciencias Químicas, Benemérita Universidad Autónoma de Puebla (BUAP), 14 Sur Esq. San Claudio, Col. San Manuel 72570, Puebla, Mexico
| | - Leticia Quintero
- Centro de Investigación de la Facultad de Ciencias Químicas, Benemérita Universidad Autónoma de Puebla (BUAP), 14 Sur Esq. San Claudio, Col. San Manuel 72570, Puebla, Mexico
| | - Pedro López-Mendoza
- Centro de Investigación de la Facultad de Ciencias Químicas, Benemérita Universidad Autónoma de Puebla (BUAP), 14 Sur Esq. San Claudio, Col. San Manuel 72570, Puebla, Mexico
| | - Fernando Sartillo-Piscil
- Centro de Investigación de la Facultad de Ciencias Químicas, Benemérita Universidad Autónoma de Puebla (BUAP), 14 Sur Esq. San Claudio, Col. San Manuel 72570, Puebla, Mexico
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2
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Zhang Y, Zhang ZQ, Du Y, Nie JH, Wang Y, Cui BD, Mou XQ, Zhou MQ, Chen YZ. Photomediated One-Pot Three-Component Approach Enables the Formal Direct N-Acylation/Sulfonylation and α-C-H Functionalization of 1,2,3,4-Tetrahydroisoquinoline. J Org Chem 2024. [PMID: 39051980 DOI: 10.1021/acs.joc.4c01229] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/27/2024]
Abstract
N-Acyl/sulfonyl-α-functionalized 1,2,3,4-tetrahydroisoquinolines (THIQs) are significant structural motifs in organic synthesis and drug discovery. However, the one-pot approach enabling direct difunctionalization of THIQs remains challenging. Herein we report a photomediated one-pot three-component strategy to access N-acyl/sulfonyl-α-functionalized THIQs. This method features the use of oxygen (from air) as the green oxidant, high atom and step economy, and decent structural diversity. The synthetic applicability of the method was further demonstrated via the facile construction of valuable bioactive molecules. Mechanistic studies indicated that oxidation with singlet oxygen and the acceptor-less dehydrogenation were involved in the photoredox process.
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Affiliation(s)
- Yun Zhang
- Key Laboratory of Biocatalysis & Chiral Drug Synthesis of Guizhou Province, Generic Drug Research Center of Guizhou Province, Green Pharmaceuticals Engineering Research Center of Guizhou Province, School of Pharmacy, Zunyi Medical University, Zunyi 563006, P. R. China
- Key Laboratory of Basic Pharmacology of Ministry of Education and Joint International Research Laboratory of Ethnomedicine of Ministry of Education, Zunyi Medical University, Zunyi 563006, P. R. China
| | - Zheng-Qian Zhang
- Key Laboratory of Biocatalysis & Chiral Drug Synthesis of Guizhou Province, Generic Drug Research Center of Guizhou Province, Green Pharmaceuticals Engineering Research Center of Guizhou Province, School of Pharmacy, Zunyi Medical University, Zunyi 563006, P. R. China
- Key Laboratory of Basic Pharmacology of Ministry of Education and Joint International Research Laboratory of Ethnomedicine of Ministry of Education, Zunyi Medical University, Zunyi 563006, P. R. China
| | - Yao Du
- Key Laboratory of Biocatalysis & Chiral Drug Synthesis of Guizhou Province, Generic Drug Research Center of Guizhou Province, Green Pharmaceuticals Engineering Research Center of Guizhou Province, School of Pharmacy, Zunyi Medical University, Zunyi 563006, P. R. China
- Key Laboratory of Basic Pharmacology of Ministry of Education and Joint International Research Laboratory of Ethnomedicine of Ministry of Education, Zunyi Medical University, Zunyi 563006, P. R. China
| | - Jia-Huan Nie
- Key Laboratory of Biocatalysis & Chiral Drug Synthesis of Guizhou Province, Generic Drug Research Center of Guizhou Province, Green Pharmaceuticals Engineering Research Center of Guizhou Province, School of Pharmacy, Zunyi Medical University, Zunyi 563006, P. R. China
- Key Laboratory of Basic Pharmacology of Ministry of Education and Joint International Research Laboratory of Ethnomedicine of Ministry of Education, Zunyi Medical University, Zunyi 563006, P. R. China
| | - Yan Wang
- Key Laboratory of Biocatalysis & Chiral Drug Synthesis of Guizhou Province, Generic Drug Research Center of Guizhou Province, Green Pharmaceuticals Engineering Research Center of Guizhou Province, School of Pharmacy, Zunyi Medical University, Zunyi 563006, P. R. China
- Key Laboratory of Basic Pharmacology of Ministry of Education and Joint International Research Laboratory of Ethnomedicine of Ministry of Education, Zunyi Medical University, Zunyi 563006, P. R. China
| | - Bao-Dong Cui
- Key Laboratory of Biocatalysis & Chiral Drug Synthesis of Guizhou Province, Generic Drug Research Center of Guizhou Province, Green Pharmaceuticals Engineering Research Center of Guizhou Province, School of Pharmacy, Zunyi Medical University, Zunyi 563006, P. R. China
- Key Laboratory of Basic Pharmacology of Ministry of Education and Joint International Research Laboratory of Ethnomedicine of Ministry of Education, Zunyi Medical University, Zunyi 563006, P. R. China
| | - Xue-Qing Mou
- Key Laboratory of Biocatalysis & Chiral Drug Synthesis of Guizhou Province, Generic Drug Research Center of Guizhou Province, Green Pharmaceuticals Engineering Research Center of Guizhou Province, School of Pharmacy, Zunyi Medical University, Zunyi 563006, P. R. China
- Key Laboratory of Basic Pharmacology of Ministry of Education and Joint International Research Laboratory of Ethnomedicine of Ministry of Education, Zunyi Medical University, Zunyi 563006, P. R. China
| | - Ming-Qiang Zhou
- Key Laboratory of Biocatalysis & Chiral Drug Synthesis of Guizhou Province, Generic Drug Research Center of Guizhou Province, Green Pharmaceuticals Engineering Research Center of Guizhou Province, School of Pharmacy, Zunyi Medical University, Zunyi 563006, P. R. China
- National Engineering Research Center of Chiral Drugs, Chengdu Institute of Organic Chemistry, Chinese Academy of Sciences, Chengdu 610041, P. R. China
| | - Yong-Zheng Chen
- Key Laboratory of Biocatalysis & Chiral Drug Synthesis of Guizhou Province, Generic Drug Research Center of Guizhou Province, Green Pharmaceuticals Engineering Research Center of Guizhou Province, School of Pharmacy, Zunyi Medical University, Zunyi 563006, P. R. China
- Key Laboratory of Basic Pharmacology of Ministry of Education and Joint International Research Laboratory of Ethnomedicine of Ministry of Education, Zunyi Medical University, Zunyi 563006, P. R. China
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3
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Liu L. Hydride-Abstraction-Initiated Catalytic Stereoselective Intermolecular Bond-Forming Processes. Acc Chem Res 2022; 55:3537-3550. [PMID: 36384272 DOI: 10.1021/acs.accounts.2c00638] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
The stereoselective intermolecular bond-forming reactions through the direct manipulation of ubiquitous yet inert C(sp3)-H bonds represent an important and long-standing goal in chemistry. In particular, developing such a stereoselective bimolecular transformation involving carbocation intermediates generated via site-selective hydride abstraction or formal hydride abstraction by organic oxidants would avoid the preinstallation of directing groups and is therefore attractive. Hydride-abstraction-initiated bimolecular transformations have received considerable attention, but existing examples lack stereoselective studies. Prevalent stereoselective studies typically suffer from the narrow substrate scope of specific and highly reactive N-aryl amines and diarylmethanes together with limited synthetic utility. This Account describes our recent advances in the development and synthetic application of hydride-abstraction-initiated stereoselective intermolecular C-C and C-H bond-forming processes with significantly expanded scopes involving structurally diverse N-acyl amines and ethers together with nitriles, esters, and perfluoroalkyl moieties.We first explored hydride-abstraction-initiated stereoselective intermolecular C-C bond-forming processes. Utilizing triarylmethyl cations or oxoammonium ions as hydride abstractors, we accomplished the diastereoselective oxidative C-H functionalization of structurally diverse N-acyl amines and ethers with a range of organoboranes and C-H components, efficiently installing a series of alkyl, alkenyl, aryl, and alkynyl species into the α-position of heteroatoms with good levels of diastereocontrol. Subsequently, we developed an "acetal pool" strategy as the toolbox to regulate the stability of cationic intermediates and the compatibility of organic oxidants with a delicate asymmetric catalysis system. Utilizing this strategy, we achieved the catalytic enantioselective oxidative C-H alkenylation, arylation, alkynylation, and alkylation of diverse N-acyl heterocycles with a range of boronates and C-H components. Simultaneously, we extended this strategy to the asymmetric oxidative C-H alkylation of ethers. Notably, the method allows solvents that are used daily, such as tetrahydrofuran, tetrahydropyran, and diethyl ether, to be facilely transformed to high-value-added optically pure bioactive molecules. We further expanded the scope of this challenging area from the C(sp3)-H bond adjacent to electron-donating heteroatoms to valuable electron-withdrawing functional groups including nitriles, esters, and perfluoroalkyl moieties for the stereoselective construction of single and vicinal quaternary carbon stereocenters, respectively.We studied hydride-abstraction-initiated catalytic asymmetric intermolecular C-H bond-forming processes, known as redox deracemization. Utilizing the acetal pool strategy, we reported the first redox deracemization of cyclic benzylic ethers. Later, we disclosed an aerobic one-pot deracemization of diverse α-amino acid derivatives with excellent functional group compatibility. We further achieved the deracemization of the tertiary stereogenic center adjacent to electron-withdrawing groups including perfluoroalkyl, cyano, and ester moieties, which are otherwise difficult to construct.
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Affiliation(s)
- Lei Liu
- School of Chemistry and Chemical Engineering, Shandong University, Jinan250100, China
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4
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Lee W, Kim D, Seo S, Chang S. Photoinduced α-C-H Amination of Cyclic Amine Scaffolds Enabled by Polar-Radical Relay. Angew Chem Int Ed Engl 2022; 61:e202202971. [PMID: 35403797 DOI: 10.1002/anie.202202971] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2022] [Indexed: 11/09/2022]
Abstract
Herein, we report a polar-radical relay strategy for α-C-H amination of cyclic amines with N-chloro-N-sodio-carbamates. The relay is initiated by in situ generation of cyclic iminium intermediate using N-iodosuccinimide (NIS) oxidant as an initiator, which then operates through a series of polar (addition and elimination) and radical (homolysis, hydrogen- and halogen atom transfer) reactions to enable the challenging C-N bond formation in a controlled manner. A broad range of α-amino cyclic amines were readily accessed with excellent regioselectivity, and the superb applicability was further demonstrated by functionalization of biologically relevant compounds.
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Affiliation(s)
- Wongyu Lee
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, 34141, Republic of Korea.,Center for Catalytic Hydrocarbon Functionalizations, Institute for Basic Science (IBS), Daejeon, 34141, Republic of Korea
| | - Dongwook Kim
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, 34141, Republic of Korea.,Center for Catalytic Hydrocarbon Functionalizations, Institute for Basic Science (IBS), Daejeon, 34141, Republic of Korea
| | - Sangwon Seo
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, 34141, Republic of Korea.,Center for Catalytic Hydrocarbon Functionalizations, Institute for Basic Science (IBS), Daejeon, 34141, Republic of Korea
| | - Sukbok Chang
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, 34141, Republic of Korea.,Center for Catalytic Hydrocarbon Functionalizations, Institute for Basic Science (IBS), Daejeon, 34141, Republic of Korea
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5
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Miller JL, Lawrence JMIA, Rodriguez Del Rey FO, Floreancig PE. Synthetic applications of hydride abstraction reactions by organic oxidants. Chem Soc Rev 2022; 51:5660-5690. [PMID: 35712818 DOI: 10.1039/d1cs01169c] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Carbon-hydrogen bond functionalizations provide an attractive method for streamlining organic synthesis, and many strategies have been developed for conducting these transformations. Hydride-abstracting reactions have emerged as extremely effective methods for oxidative bond-forming processes due to their mild reaction conditions and high chemoselectivity. This review will predominantly focus on the mechanism, reaction development, natural product synthesis applications, approaches to catalysis, and use in enantioselective processes for hydride abstractions by quinone, oxoammonium ion, and carbocation oxidants. These are the most commonly employed hydride-abstracting agents, but recent efforts illustrate the potential for weaker ketone and triaryl borane oxidants, which will be covered at the end of the review.
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Affiliation(s)
- Jenna L Miller
- Department of Chemistry, University of Pittsburgh, Pittsburgh, Pennsylvania, 15260, USA.
| | - Jean-Marc I A Lawrence
- Department of Chemistry, University of Pittsburgh, Pittsburgh, Pennsylvania, 15260, USA.
| | | | - Paul E Floreancig
- Department of Chemistry, University of Pittsburgh, Pittsburgh, Pennsylvania, 15260, USA.
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6
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Lee W, Kim D, Seo S, Chang S. Photoinduced α‐C−H Amination of Cyclic Amine Scaffolds Enabled by Polar‐Radical Relay. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202202971] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Wongyu Lee
- Department of Chemistry Korea Advanced Institute of Science and Technology (KAIST) Daejeon 34141 Republic of Korea
- Center for Catalytic Hydrocarbon Functionalizations Institute for Basic Science (IBS) Daejeon 34141 Republic of Korea
| | - Dongwook Kim
- Department of Chemistry Korea Advanced Institute of Science and Technology (KAIST) Daejeon 34141 Republic of Korea
- Center for Catalytic Hydrocarbon Functionalizations Institute for Basic Science (IBS) Daejeon 34141 Republic of Korea
| | - Sangwon Seo
- Department of Chemistry Korea Advanced Institute of Science and Technology (KAIST) Daejeon 34141 Republic of Korea
- Center for Catalytic Hydrocarbon Functionalizations Institute for Basic Science (IBS) Daejeon 34141 Republic of Korea
| | - Sukbok Chang
- Department of Chemistry Korea Advanced Institute of Science and Technology (KAIST) Daejeon 34141 Republic of Korea
- Center for Catalytic Hydrocarbon Functionalizations Institute for Basic Science (IBS) Daejeon 34141 Republic of Korea
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7
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Xia Y, Wade NW, Palermo PN, Wang Y, Wang YM. Contrasteric coupling of allenes and tetrahydroisoquinolines by iron-catalysed allenic C(sp 2)-H functionalisation. Chem Commun (Camb) 2021; 57:13329-13332. [PMID: 34816837 PMCID: PMC8665127 DOI: 10.1039/d1cc05949a] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
An iron-catalysed C-H functionalisation of simple monosubstituted allenes for the synthesis of 1-tetrahydroisoquinolinyl 1,1-disubstituted allenes is reported. This transformation represents the first example of a direct conversion of allenic C-H bonds to C-C bonds through cross dehydrogenative coupling. The optimized protocol features broad scope and employs mild, functional group tolerant conditions.
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Affiliation(s)
- Yue Xia
- Department of Chemistry, University of Pittsburgh, Pittsburgh, Pennsylvania 15260, USA.
| | - Nicholas W Wade
- Department of Chemistry, University of Pittsburgh, Pittsburgh, Pennsylvania 15260, USA.
| | - Philip N Palermo
- Department of Chemistry, University of Pittsburgh, Pittsburgh, Pennsylvania 15260, USA.
| | - Yidong Wang
- Department of Chemistry, University of Pittsburgh, Pittsburgh, Pennsylvania 15260, USA.
| | - Yi-Ming Wang
- Department of Chemistry, University of Pittsburgh, Pittsburgh, Pennsylvania 15260, USA.
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8
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Miller JL, Zhou L, Liu P, Floreancig PE. Mechanism-Based Approach to Reagent Selection for Oxidative Carbon-Hydrogen Bond Cleavage Reactions. Chemistry 2021; 28:e202103078. [PMID: 34822737 DOI: 10.1002/chem.202103078] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2021] [Indexed: 11/07/2022]
Abstract
Numerous hydride-abstracting agents generate the same cationic intermediate, but substrate features such as intermediate cation stability, oxidation potential, and steric environment can influence reaction rates in an oxidant-dependent manner. This manuscript provides experimental data to illustrate the role that structural features play in the kinetics of hydride abstraction reactions with commonly used quinone-, oxoammonium ion-, and carbocation- based oxidants. Computational studies of the transition state structures and energies explain these results and energy decomposition analysis calculations reveal unique sensitivities to electrostatic attraction and steric repulsions. Rigorous rate studies of select reactions validated the capacity of the calculations to predict reactivity trends. Additionally, kinetics studies demonstrate the potential for product inhibition in DDQ-mediated reactions. These studies provide a clear guide to select the optimal oxidant for structurally disparate substrates and lead to predictions of reactivity that were validated experimentally.
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Affiliation(s)
- Jenna L Miller
- Department of Chemistry, University of Pittsburgh Pittsburgh, Pennsylvania, 15260, United States
| | - Lin Zhou
- Department of Chemistry, University of Pittsburgh Pittsburgh, Pennsylvania, 15260, United States
| | - Peng Liu
- Department of Chemistry, University of Pittsburgh Pittsburgh, Pennsylvania, 15260, United States
| | - Paul E Floreancig
- Department of Chemistry, University of Pittsburgh Pittsburgh, Pennsylvania, 15260, United States
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9
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Synthesis, characterization and antimicrobial investigation of new piperidinyl tetrahydrothieno[2,3-c]isoquinolines. ARAB J CHEM 2021. [DOI: 10.1016/j.arabjc.2021.103318] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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10
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One-pot synthesis of polysubstituted quinazolin-4(3H)-ones via sequential oxidative Ugi/Staudinger/aza-Wittig reactions starting from tertiary amines. Tetrahedron 2021. [DOI: 10.1016/j.tet.2021.132368] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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11
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Ao NRM, Zhu XQ, Zhao CX, Gao YR, Wang YQ. Photocatalyzed Csp 3-Csp 3 cross-dehydrogenative coupling of N-Boc-tetrahydroisoquinolines with α,β-unsaturated ketones. Org Biomol Chem 2021; 19:4752-4759. [PMID: 33978053 DOI: 10.1039/d1ob00527h] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
A novel photocatalyzed cross-dehydrogenative coupling reaction of N-Boc-tetrahydroisoquinolines with α,β-unsaturated ketones has been developed. This research provides an easy access to a variety of C1-substituted tetrahydroisoquinolines, which can be further transformed into benzo[a]-quinolizine-2-ones, the skeletons of natural products with a wide range of biological activities. The load of the photocatalyst is low and the oxidant is inexpensive and less toxic.
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Affiliation(s)
- Na-Ri-Mei Ao
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of Ministry of Education, National Demonstration Center for Experimental Chemistry Education, College of Chemistry & Materials Science, Northwest University, Xi'an 710069, People's Republic of China.
| | - Xue-Qing Zhu
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of Ministry of Education, National Demonstration Center for Experimental Chemistry Education, College of Chemistry & Materials Science, Northwest University, Xi'an 710069, People's Republic of China.
| | - Chun-Xin Zhao
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of Ministry of Education, National Demonstration Center for Experimental Chemistry Education, College of Chemistry & Materials Science, Northwest University, Xi'an 710069, People's Republic of China.
| | - Ya-Ru Gao
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of Ministry of Education, National Demonstration Center for Experimental Chemistry Education, College of Chemistry & Materials Science, Northwest University, Xi'an 710069, People's Republic of China.
| | - Yong-Qiang Wang
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of Ministry of Education, National Demonstration Center for Experimental Chemistry Education, College of Chemistry & Materials Science, Northwest University, Xi'an 710069, People's Republic of China.
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12
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Singh P, Batra A, Singh KN, Mritunjay M. Transition-Metal-Free Strategies for the Synthesis of C-1 Aryl-Substituted Tetrahydroisoquinolines. SYNTHESIS-STUTTGART 2021. [DOI: 10.1055/a-1344-2074] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
Abstract1-Aryl-1,2,3,4-tetrahydroisoquinolines are important structural motifs and are widely found in bioactive molecules, pharmaceuticals and synthetic drugs. In view of increasing environmental awareness, the development of transition-metal-free strategies for the synthesis of these compounds is highly desirable. Metal-free oxidative coupling and lithiation methodologies have emerged as effective tools in this area as they exclude the use of transition-metal catalysts and help in reducing unwanted and toxic-metal-based chemical waste in the environment. This review highlights recent advances on the direct arylation of tetrahydroisoquinolines for the synthesis of the title compounds in the absence of a metal salt. Also, the emphasis has been placed on mechanistic considerations of these reactions.1 Introduction2 Arylation of Tetrahydroisoquinolines via Oxidative Coupling2.1 Arylation Using Grignard Reagents2.2 Arylation Using Other Organometallic Reagents2.3 Arylation Using Aryl Organoboranes or Arenes3 Arylation of Tetrahydroisoquinolines via Lithiation3.1 Intermolecular Arylation3.2 Intramolecular Arylation4 Conclusion and Outlook
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Affiliation(s)
| | - Aanchal Batra
- PG Department of Chemistry, Mehr Chand Mahajan DAV College for Women
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13
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Abstract
This review highlights the state-of-the-art advances in C(sp3)–H functionalization involving isocyanides through the synergistic combination of isocyanide insertion and C(sp3)–H bond activation.
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Affiliation(s)
- Weixiang Wang
- Department of Chemistry
- Innovative Drug Research Center
- School of Medicine
- Shanghai University
- Shanghai 200444
| | - Tianqi Liu
- Department of Chemistry
- Innovative Drug Research Center
- School of Medicine
- Shanghai University
- Shanghai 200444
| | - Chang-Hua Ding
- Department of Chemistry
- Innovative Drug Research Center
- School of Medicine
- Shanghai University
- Shanghai 200444
| | - Bin Xu
- Department of Chemistry
- Innovative Drug Research Center
- School of Medicine
- Shanghai University
- Shanghai 200444
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14
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Xie Z, Li F, Niu L, Li H, Zheng J, Han R, Ju Z, Li S, Li D. CuBr/NHPI co-catalyzed aerobic oxidative [3 + 2] cycloaddition-aromatization to access 5,6-dihydro-pyrrolo[2,1-a]isoquinolines. Org Biomol Chem 2020; 18:6889-6898. [PMID: 32852493 DOI: 10.1039/d0ob01403f] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
An efficient and enviromentally friendly CuBr/NHPI co-catalyzed aerobic oxidative [3 + 2] cycloaddition-aromatization cascade was realized with N-substituted tetrahydroisoquinolines and electron-deficient olefins. Under the mild conditions, the reaction proceeded smoothly and displayed excellent functional group tolerance, affording 5,6-dihydro-pyrrolo[2,1-a]isoquinolines in good to high yields. This protocol exhibits a broad substrate scope to both N-alkyl tetrahydroisoquinolines and dipolarophile substrates.
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Affiliation(s)
- Zhiyu Xie
- College of Chemical and Materials Engineering, Xuchang University, No. 88, Bayi Road, Xuchang, Henan 461000, P. R. China.
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15
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Yu H, Kim H, Baek SH, Lee D. Direct and Efficient C(sp 3)-H Functionalization of N-Acyl/Sulfonyl Tetrahydroisoquinolines (THIQs) With Electron-Rich Nucleophiles via 2,3-Dichloro-5,6-Dicyano-1,4-Benzoquinone (DDQ) Oxidation. Front Chem 2020; 8:629. [PMID: 32850649 PMCID: PMC7403605 DOI: 10.3389/fchem.2020.00629] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2020] [Accepted: 06/17/2020] [Indexed: 11/25/2022] Open
Abstract
A highly efficient metal-free oxidative direct C(sp3)–H functionalization of N-acyl/sulfonyl 1,2,3,4-tetrahydroisoquinolines (THIQs) with a wide range of electron-rich nucleophiles was accomplished under mild conditions through oxidation with DDQ and subsequent trapping of the resulting reactive and stable N-acyl/sulfonyl iminium ions. The synthetic utility of this method was illustrated by a concise and efficient total synthesis of (±)-benzo[a]quinolizidine (10) in 3 steps from the known N-Cbz 1,2,3,4-THIQ 4b.
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Affiliation(s)
- Heesun Yu
- Research Institute of Pharmaceutical Science and Technology (RIPST), College of Pharmacy, Ajou University, Suwon, South Korea
| | - Hyoungsu Kim
- Research Institute of Pharmaceutical Science and Technology (RIPST), College of Pharmacy, Ajou University, Suwon, South Korea
| | - Seung-Hoon Baek
- Research Institute of Pharmaceutical Science and Technology (RIPST), College of Pharmacy, Ajou University, Suwon, South Korea
| | - Dongjoo Lee
- Research Institute of Pharmaceutical Science and Technology (RIPST), College of Pharmacy, Ajou University, Suwon, South Korea
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16
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Kouznetsov VV, Ortiz-Villamizar MC, Méndez-Vargas LY, Galvis CEP. A Review on Metal-Free Oxidative α-Cyanation and Alkynylation of N-Substituted Tetrahydroisoquinolines as a Rapid Route for the Synthesis of Isoquinoline Alkaloids. CURR ORG CHEM 2020. [DOI: 10.2174/1385272824999200420073539] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
As a fast-growing research field in modern organic chemistry, the crossdehydrogenative
coupling (CDC) has seen considerable development in its scope of application,
uptake into industry, and understanding of its mechanism to functionalize the tetrahydroisoquinoline
(THIQ) scaffold. Among the vast number of possibilities offered by
the CDC coupling, the metal-free oxidative α-cyanation and alkynylation reactions have
emerged as powerful strategies in the synthesis of diverse and potentially bioactive
THIQs. Even though transition-metal catalyzed CDC reactions have undoubtedly made
significant progress in THIQ chemistry, general and selective protocols for the metal-free
oxidative α-cyanation and alkynylation reactions of THIQs are urgently needed. Thereby,
this critical discussion is aimed to highlight the recent progress in this field of CDC reactions
where Csp3-H bonds are activated without metal catalysts to introduce the CN and the alkynyl groups into
the THIQ core.
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Affiliation(s)
- Vladimir V. Kouznetsov
- Laboratory of Organic and Bimolecular Chemistry, CMN, Industrial University of Santande, Guatiguará Technology Park, Km 2 Vía Refugio, Piedecuesta 681011, Colombia
| | - Marlyn C. Ortiz-Villamizar
- Laboratory of Organic and Bimolecular Chemistry, CMN, Industrial University of Santande, Guatiguará Technology Park, Km 2 Vía Refugio, Piedecuesta 681011, Colombia
| | - Leonor Y. Méndez-Vargas
- Laboratory of Organic and Bimolecular Chemistry, CMN, Industrial University of Santande, Guatiguará Technology Park, Km 2 Vía Refugio, Piedecuesta 681011, Colombia
| | - Carlos E. Puerto Galvis
- Laboratory of Organic and Bimolecular Chemistry, CMN, Industrial University of Santande, Guatiguará Technology Park, Km 2 Vía Refugio, Piedecuesta 681011, Colombia
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17
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Zhang Y, Li S, Zhu Y, Yang X, Zhou H, Li Y. Visible Light-Induced Oxidative Cross Dehydrogenative Coupling of Glycine Esters with β-Naphthols: Access to 1,3-Benzoxazines. J Org Chem 2020; 85:6261-6270. [DOI: 10.1021/acs.joc.9b01440] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Yuan Zhang
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, People’s Republic of China
| | - Shilin Li
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, People’s Republic of China
| | - Yin Zhu
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, People’s Republic of China
| | - Xiaorong Yang
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, People’s Republic of China
| | - Huang Zhou
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, People’s Republic of China
| | - Ying Li
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, People’s Republic of China
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18
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Gao Z, Xia Z, Dai L, Ye S. N‐Heterocyclic Carbene Catalyzed Photooxidation: Intramolecular Cross Dehydrogenative Coupling of Tetrahydroisoquinoline‐Tethered Aldehydes. Adv Synth Catal 2020. [DOI: 10.1002/adsc.202000164] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Affiliation(s)
- Zhong‐Hua Gao
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Molecular Recognition and Function, Institute of ChemistryChinese Academy of Sciences Beijing 100190 People's Republic of China
| | - Zi‐Hao Xia
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Molecular Recognition and Function, Institute of ChemistryChinese Academy of Sciences Beijing 100190 People's Republic of China
- University of Chinese Academy of Sciences Beijing 100049 People's Republic of China
| | - Lei Dai
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Molecular Recognition and Function, Institute of ChemistryChinese Academy of Sciences Beijing 100190 People's Republic of China
- University of Chinese Academy of Sciences Beijing 100049 People's Republic of China
| | - Song Ye
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Molecular Recognition and Function, Institute of ChemistryChinese Academy of Sciences Beijing 100190 People's Republic of China
- University of Chinese Academy of Sciences Beijing 100049 People's Republic of China
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19
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Toward Rational Understandings of α-C-H Functionalization: Energetic Studies of Representative Tertiary Amines. iScience 2020; 23:100851. [PMID: 32058963 PMCID: PMC6997867 DOI: 10.1016/j.isci.2020.100851] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2019] [Revised: 12/31/2019] [Accepted: 01/14/2020] [Indexed: 12/17/2022] Open
Abstract
Functionalization of α-C–H bonds of tertiary amines to build various α-C–X bonds has become a mainstream in synthetic chemistry nowadays. However, due to lack of fundamental knowledge on α-C–H bond strength as an energetic guideline, rational exploration of new synthetic methodologies remains a far-reaching anticipation. Herein, we report a unique hydricity-based approach to establish the first integrated energetic scale covering both the homolytic and heterolytic energies of α-C–H bonds for 45 representative tertiary amines and their radical cations. As showcased from the studies on tetrahydroisoquinolines (THIQs) by virtue of their thermodynamic criteria, the feasibility and mechanisms of THIQ oxidation were deduced, which, indeed, were found to correspond well with experimental observations. This integrated scale provides a good example to relate bond energetics with mechanisms and thermodynamic reactivity of amine α-C–H functionalization and hence, may be referenced for analyzing similar structure-property problems for various substrates. A unique hydricity-based methodology for bond energy determination The first integrated α-C–H bond energy scale of tertiary amines Thermodynamics-based diagnosis of the feasibility/mechanism of amine oxidation
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20
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Yan X, Tang YD, Jiang CS, Liu X, Zhang H. Oxidative Dearomative Cross-Dehydrogenative Coupling of Indoles with Diverse C-H Nucleophiles: Efficient Approach to 2,2-Disubstituted Indolin-3-ones. MOLECULES (BASEL, SWITZERLAND) 2020; 25:molecules25020419. [PMID: 31968572 PMCID: PMC7024378 DOI: 10.3390/molecules25020419] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/23/2019] [Revised: 01/12/2020] [Accepted: 01/15/2020] [Indexed: 11/16/2022]
Abstract
The oxidative, dearomative cross-dehydrogenative coupling of indoles with various C-H nucleophiles is developed. This process features a broad substrate scope with respect to both indoles and nucleophiles, affording structurally diverse 2,2-disubstituted indolin-3-ones in high yields (up to 99%). The oxidative dimerization and trimerization of indoles has also been demonstrated under the same conditions.
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Affiliation(s)
- Xue Yan
- School of Chemistry and Chemical Engineering, University of Jinan, Jinan 250022, China
- School of Biological Science and Technology, University of Jinan, Jinan 250022, China
| | - Ying-De Tang
- School of Chemistry and Chemical Engineering, University of Jinan, Jinan 250022, China
- School of Biological Science and Technology, University of Jinan, Jinan 250022, China
| | - Cheng-Shi Jiang
- School of Biological Science and Technology, University of Jinan, Jinan 250022, China
| | - Xigong Liu
- School of Biological Science and Technology, University of Jinan, Jinan 250022, China
- School of Chemistry and Chemical Engineering, Shandong University, Jinan 250100, China
- Correspondence: (X.L.); (H.Z.)
| | - Hua Zhang
- School of Biological Science and Technology, University of Jinan, Jinan 250022, China
- Correspondence: (X.L.); (H.Z.)
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21
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Shang W, Duan D, Liu Y, Lv J. Carbocation Lewis Acid TrBF4-Catalyzed 1,2-Hydride Migration: Approaches to (Z)-α,β-Unsaturated Esters and α-Branched β-Ketocarbonyls. Org Lett 2019; 21:8013-8017. [DOI: 10.1021/acs.orglett.9b03005] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Wansong Shang
- Key Laboratory of Optic-electric Sensing and Analytical Chemistry for Life Science, MOE, State Key Laboratory Base of Eco-Chemical Engineering, College of Chemistry and Molecular Engineering, Qingdao University of Science & Technology, Qingdao 266042, China
| | - Depeng Duan
- Key Laboratory of Optic-electric Sensing and Analytical Chemistry for Life Science, MOE, State Key Laboratory Base of Eco-Chemical Engineering, College of Chemistry and Molecular Engineering, Qingdao University of Science & Technology, Qingdao 266042, China
| | - Yongjun Liu
- Key Laboratory of Optic-electric Sensing and Analytical Chemistry for Life Science, MOE, State Key Laboratory Base of Eco-Chemical Engineering, College of Chemistry and Molecular Engineering, Qingdao University of Science & Technology, Qingdao 266042, China
| | - Jian Lv
- Key Laboratory of Optic-electric Sensing and Analytical Chemistry for Life Science, MOE, State Key Laboratory Base of Eco-Chemical Engineering, College of Chemistry and Molecular Engineering, Qingdao University of Science & Technology, Qingdao 266042, China
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22
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Gil-Negrete JM, Pérez Sestelo J, Sarandeses LA. Transition-Metal-Free Oxidative Cross-Coupling of Triorganoindium Reagents with Tetrahydroisoquinolines. J Org Chem 2019; 84:9778-9785. [DOI: 10.1021/acs.joc.9b00928] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Affiliation(s)
- José M. Gil-Negrete
- Centro de Investigaciones Científicas Avanzadas (CICA) and Departamento de Química, Universidade da Coruña, E-15071 A Coruña, Spain
| | - José Pérez Sestelo
- Centro de Investigaciones Científicas Avanzadas (CICA) and Departamento de Química, Universidade da Coruña, E-15071 A Coruña, Spain
| | - Luis A. Sarandeses
- Centro de Investigaciones Científicas Avanzadas (CICA) and Departamento de Química, Universidade da Coruña, E-15071 A Coruña, Spain
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23
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Feng G, Sun C, Xin X, Wan R, Liu L. Cross-dehydrogenative coupling of 3,6-dihydro-2H-pyrans with 1,3-dicarbonyls and aryl moieties. Tetrahedron Lett 2019. [DOI: 10.1016/j.tetlet.2019.05.016] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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24
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Wang Z, Mao Y, Guan H, Cao M, Hua J, Feng L, Liu L. Direct oxidative C(sp3) H cyanation of secondary benzylic ethers. CHINESE CHEM LETT 2019. [DOI: 10.1016/j.cclet.2019.03.019] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
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25
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Tan Q, Yang Z, Jiang D, Cheng Y, Yang J, Xi S, Zhang M. Copper‐Catalyzed Aerobic Oxidative Cyclization Cascade to Construct Bridged Skeletons: Total Synthesis of (−)‐Suaveoline. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201902155] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Qiuyuan Tan
- Chongqing Key Laboratory of Natural Product Synthesis and Drug ResearchSchool of Pharmaceutical SciencesChongqing University Chongqing 401331 China
| | - Zhao Yang
- Chongqing Key Laboratory of Natural Product Synthesis and Drug ResearchSchool of Pharmaceutical SciencesChongqing University Chongqing 401331 China
| | - Dan Jiang
- Chongqing Key Laboratory of Natural Product Synthesis and Drug ResearchSchool of Pharmaceutical SciencesChongqing University Chongqing 401331 China
| | - Yuegang Cheng
- Chongqing Key Laboratory of Natural Product Synthesis and Drug ResearchSchool of Pharmaceutical SciencesChongqing University Chongqing 401331 China
| | - Jiao Yang
- Chongqing Key Laboratory of Natural Product Synthesis and Drug ResearchSchool of Pharmaceutical SciencesChongqing University Chongqing 401331 China
| | - Song Xi
- Chongqing Key Laboratory of Natural Product Synthesis and Drug ResearchSchool of Pharmaceutical SciencesChongqing University Chongqing 401331 China
| | - Min Zhang
- Chongqing Key Laboratory of Natural Product Synthesis and Drug ResearchSchool of Pharmaceutical SciencesChongqing University Chongqing 401331 China
- School of Chemistry and Chemical EngineeringChongqing University Chongqing 401331 China
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26
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Tan Q, Yang Z, Jiang D, Cheng Y, Yang J, Xi S, Zhang M. Copper-Catalyzed Aerobic Oxidative Cyclization Cascade to Construct Bridged Skeletons: Total Synthesis of (-)-Suaveoline. Angew Chem Int Ed Engl 2019; 58:6420-6424. [PMID: 30835928 DOI: 10.1002/anie.201902155] [Citation(s) in RCA: 39] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2019] [Indexed: 12/13/2022]
Abstract
Based on the discovery of copper-catalyzed cyclopropanol ring-opening addition to iminium ions, an unprecedented catalytic aerobic C-H oxidation/cyclopropanol cyclization cascade using CuCl2 as the multifunctional catalyst and air as the oxidant was developed to construct the azabicyclo[3.3.1]nonane skeleton, which is widespread in natural products and medicines. Using this method, concise asymmetric total synthesis of the indole alkaloid (-)-suaveoline was achieved. This study not only provides an efficient, low-cost, and environmentally benign method for constructing such bridged frameworks, but also enriches the realm of cyclopropanol chemistry and C-H functionalization.
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Affiliation(s)
- Qiuyuan Tan
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research, School of Pharmaceutical Sciences, Chongqing University, Chongqing, 401331, China
| | - Zhao Yang
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research, School of Pharmaceutical Sciences, Chongqing University, Chongqing, 401331, China
| | - Dan Jiang
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research, School of Pharmaceutical Sciences, Chongqing University, Chongqing, 401331, China
| | - Yuegang Cheng
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research, School of Pharmaceutical Sciences, Chongqing University, Chongqing, 401331, China
| | - Jiao Yang
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research, School of Pharmaceutical Sciences, Chongqing University, Chongqing, 401331, China
| | - Song Xi
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research, School of Pharmaceutical Sciences, Chongqing University, Chongqing, 401331, China
| | - Min Zhang
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research, School of Pharmaceutical Sciences, Chongqing University, Chongqing, 401331, China
- School of Chemistry and Chemical Engineering, Chongqing University, Chongqing, 401331, China
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27
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28
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Morgante P, Dughera S, Ghigo G. Aerobic CuCl2-Catalyzed Dehydrogenative Cross-Coupling of Tertiary Amines. A Combined Computational and Experimental Study. J Phys Chem A 2019; 123:2796-2814. [PMID: 30862163 DOI: 10.1021/acs.jpca.9b00324] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Pierpaolo Morgante
- Dipartimento di Chimica, Università di Torino Via Giuria 7, 10125 Torino, Italy
| | - Stefano Dughera
- Dipartimento di Chimica, Università di Torino Via Giuria 7, 10125 Torino, Italy
| | - Giovanni Ghigo
- Dipartimento di Chimica, Università di Torino Via Giuria 7, 10125 Torino, Italy
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29
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Haldar S, Jana CK. Direct (het)arylation of tetrahydroisoquinolines via a metal and oxidant free C(sp 3)-H functionalization enabled three component reaction. Org Biomol Chem 2019; 17:1800-1804. [PMID: 30516776 DOI: 10.1039/c8ob02309c] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
An unprecedented method for the direct arylation and heteroarylation of tetrahydroisoquinolines under metal and oxidant free conditions is reported. The arylation reactions occurred via a C(sp3)-H functionalization enabled three component condensation of tetrahydroisoquinolines, 9-fluorenone imine, and arenes without involving a pre-functionalization/pre-derivatization step. A wide range of arenes and heteroarenes participated in the reaction to provide structurally diverse arylated tetrahydroisoquinolines with good to excellent yields.
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Affiliation(s)
- Surajit Haldar
- Department of Chemistry, Indian Institute of Technology Guwahati, 781039, India.
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30
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Xu Y, Xu ZJ, Liu ZP, Lou H. Visible-light-mediated de-aminative alkylation of N-arylamines with alkyl Katritzky salts. Org Chem Front 2019. [DOI: 10.1039/c9qo01175g] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
A visible-light-mediated de-aminative alkylation of N-arylamines has been developed, providing direct access to α-amino C–H functionalization from readily available Katritzky salts under mild conditions.
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Affiliation(s)
- Yuliang Xu
- Key Laboratory of Chemical Biology (Ministry of Education)
- School of Pharmacy
- Shandong University
- Jinan
- PR China
| | - Ze-Jun Xu
- Key Laboratory of Chemical Biology (Ministry of Education)
- School of Pharmacy
- Shandong University
- Jinan
- PR China
| | - Zhao-Peng Liu
- Key Laboratory of Chemical Biology (Ministry of Education)
- School of Pharmacy
- Shandong University
- Jinan
- PR China
| | - Hongxiang Lou
- Key Laboratory of Chemical Biology (Ministry of Education)
- School of Pharmacy
- Shandong University
- Jinan
- PR China
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31
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Mao Y, Cao M, Pan X, Huang J, Li J, Xu L, Liu L. Bimolecular oxidative C–H alkynylation of α-substituted isochromans. Org Chem Front 2019. [DOI: 10.1039/c9qo00352e] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
The first bimolecular oxidative C–H functionalization of secondary benzylic ethers for tertiary ether synthesis has been established in high efficiency.
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Affiliation(s)
- Ying Mao
- School of Pharmaceutical Sciences
- Shandong University
- Jinan 250012
- P.R. China
| | - Min Cao
- School of Chemistry and Chemical Engineering
- Shandong University
- Jinan 250100
- P.R. China
| | - Xiaoguang Pan
- School of Pharmaceutical Sciences
- Shandong University
- Jinan 250012
- P.R. China
| | - Jiancheng Huang
- School of Chemistry and Chemical Engineering
- Shandong University
- Jinan 250100
- P.R. China
| | - Jing Li
- School of Chemistry and Chemical Engineering
- Shandong University
- Jinan 250100
- P.R. China
| | - Liren Xu
- School of Chemistry and Chemical Engineering
- Shandong University
- Jinan 250100
- P.R. China
| | - Lei Liu
- School of Pharmaceutical Sciences
- Shandong University
- Jinan 250012
- P.R. China
- School of Chemistry and Chemical Engineering
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32
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Li S, Yang X, Wang Y, Zhou H, Zhang B, Huang G, Zhang Y, Li Y. Visible Light-Induced Aerobic Oxidative Csp3
−H Arylation of Glycine Derivatives. Adv Synth Catal 2018. [DOI: 10.1002/adsc.201801018] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Shilin Li
- State Key Laboratory of Applied Organic Chemistry; College of Chemistry and Chemical Engineering; Lanzhou University; 222 Tianshui South Road Lanzhou 730000 People's Republic of China
| | - Xiaorong Yang
- State Key Laboratory of Applied Organic Chemistry; College of Chemistry and Chemical Engineering; Lanzhou University; 222 Tianshui South Road Lanzhou 730000 People's Republic of China
| | - Yunwei Wang
- State Key Laboratory of Applied Organic Chemistry; College of Chemistry and Chemical Engineering; Lanzhou University; 222 Tianshui South Road Lanzhou 730000 People's Republic of China
| | - Huang Zhou
- State Key Laboratory of Applied Organic Chemistry; College of Chemistry and Chemical Engineering; Lanzhou University; 222 Tianshui South Road Lanzhou 730000 People's Republic of China
| | - Boyang Zhang
- State Key Laboratory of Applied Organic Chemistry; College of Chemistry and Chemical Engineering; Lanzhou University; 222 Tianshui South Road Lanzhou 730000 People's Republic of China
| | - Ganxing Huang
- State Key Laboratory of Applied Organic Chemistry; College of Chemistry and Chemical Engineering; Lanzhou University; 222 Tianshui South Road Lanzhou 730000 People's Republic of China
| | - Yuan Zhang
- State Key Laboratory of Applied Organic Chemistry; College of Chemistry and Chemical Engineering; Lanzhou University; 222 Tianshui South Road Lanzhou 730000 People's Republic of China
| | - Ying Li
- State Key Laboratory of Applied Organic Chemistry; College of Chemistry and Chemical Engineering; Lanzhou University; 222 Tianshui South Road Lanzhou 730000 People's Republic of China
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33
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Song W, Li M, Zheng N, Ullah K, Li J, Dong K, Zheng Y. Iridium-Catalyzed Highly Regioselective and Diastereoselective Allylic Etherification To Access cis-2,6-Disubstituted Dihydropyridinones. J Org Chem 2018; 83:12822-12830. [PMID: 30234304 DOI: 10.1021/acs.joc.8b01598] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A highly regio- and diastereoselective method to access cis-2,6-disubstituted dihydropyridinones under mild conditions by an iridium-catalyzed allylic etherification is reported. cis-2,6-Disubstituted dihydropyridinones are important precursors for the de novo synthesis of the corresponding piperidine alkaloids and iminosugars. This strategy features a broad substrate scope, high yields, and excellent regio- and diastereoselectivities. A π-allyl-Ir intermediate is involved in the mechanism. The strong A1,3-strain from the tosyl group may also favor the formation of cis-products in this transformation.
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Affiliation(s)
- Wangze Song
- State Key Laboratory of Fine Chemicals, School of Pharmaceutical Science and Technology , Dalian University of Technology , Dalian , 116024 , P. R. China
| | - Ming Li
- State Key Laboratory of Fine Chemicals, School of Pharmaceutical Science and Technology , Dalian University of Technology , Dalian , 116024 , P. R. China
| | - Nan Zheng
- State Key Laboratory of Fine Chemicals, School of Pharmaceutical Science and Technology , Dalian University of Technology , Dalian , 116024 , P. R. China.,School of Chemical Engineering , Dalian University of Technology , Dalian , 116024 , P. R. China
| | - Karim Ullah
- State Key Laboratory of Fine Chemicals, School of Pharmaceutical Science and Technology , Dalian University of Technology , Dalian , 116024 , P. R. China
| | - Junhao Li
- State Key Laboratory of Fine Chemicals, School of Pharmaceutical Science and Technology , Dalian University of Technology , Dalian , 116024 , P. R. China
| | - Kun Dong
- State Key Laboratory of Fine Chemicals, School of Pharmaceutical Science and Technology , Dalian University of Technology , Dalian , 116024 , P. R. China
| | - Yubin Zheng
- School of Chemical Engineering , Dalian University of Technology , Dalian , 116024 , P. R. China
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34
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Mandal S, Dwari S, Jana CK. Metal Free C–H Functionalization Enabled Diastereoselective Multicomponent Reaction of N-Heterocycles to Fused Heteropolycycles. J Org Chem 2018; 83:8874-8887. [PMID: 30025457 DOI: 10.1021/acs.joc.8b01105] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Sumana Mandal
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati, India 781039
| | - Soumita Dwari
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati, India 781039
| | - Chandan K. Jana
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati, India 781039
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35
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Yang F, Li Y, Floreancig PE, Li X, Liu L. Copper-catalyzed oxidative cross-dehydrogenative coupling of 2H-chromenes and terminal alkynes. Org Biomol Chem 2018; 16:5144-5149. [PMID: 29963678 PMCID: PMC6051884 DOI: 10.1039/c8ob00949j] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
An efficient copper-catalyzed cross-dehydrogenative coupling of 2H-chromenes and terminal alkynes mediated by DDQ has been established. A protic additive, EtOH, proved to be crucial for harmonizing the oxidation with a subsequent alkynylation step by retaining the oxidation state of an oxocarbenium ion in the form of acetal. The CDC reaction exhibits a good substrate scope, with a range of terminal aryl- and alkyl alkynes being well tolerated. The copper-catalyzed alkynylation of 2H-chromene acetals with terminal alkynes was also explored.
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Affiliation(s)
- Fei Yang
- School of Chemistry and Chemical Engineering, Shandong University, Jinan 250100, China.
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36
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Abstract
A multicomponent synthesis of tetrahydroisoquinolines from carboxylic acids, alkynyl ethers, and dihydroisoquinolines is described. This process features readily available starting materials, simple experimental procedures for achievement of molecule complexity, and structural diversity. The preliminary control experiment and crossover reaction provide important insight into the reaction mechanism. The formed tetrahydroisoquinolines could be transformed to an array of compounds.
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Affiliation(s)
- Linwei Zeng
- Institute of Drug Discovery and Design, College of Pharmaceutical Sciences , Zhejiang University , Hangzhou 310058 , China
| | - Bo Huang
- Institute of Drug Discovery and Design, College of Pharmaceutical Sciences , Zhejiang University , Hangzhou 310058 , China
| | - Yangyong Shen
- Institute of Drug Discovery and Design, College of Pharmaceutical Sciences , Zhejiang University , Hangzhou 310058 , China
| | - Sunliang Cui
- Institute of Drug Discovery and Design, College of Pharmaceutical Sciences , Zhejiang University , Hangzhou 310058 , China.,State Key Laboratory of Elemento-Organic Chemistry , Nankai University , Tianjin 300071 , China
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37
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Chen L, Sun C, Feng G, Cao M, Zhao SL, Yan J, Wan RZ, Liu L. Direct oxidative C-H alkynylation of N-carbamoyl tetrahydroisoquinolines and dihydroisoquinolines. Org Biomol Chem 2018; 16:2792-2799. [PMID: 29611855 DOI: 10.1039/c8ob00373d] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
An efficient oxidative C-H alkynylation of N-carbamoyl tetrahydroisoquinolines mediated by a TEMPO oxoammonium salt has been established. A variety of electronically varied N-carbamoyl tetrahydroisoquinolines reacted with a range of alkynyl potassium trifluoroborates smoothly under mild metal-free conditions. Dihydroisoquinolines were also suitable components for the reaction. The synthetic applicability of the method for facile access to structurally diverse bioactive molecules was further demonstrated.
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Affiliation(s)
- Lei Chen
- College of Animal Science and Veterinary Medicine, Shandong Agricultural University, Taian 271018, China.
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38
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Zheng H, Li L, Sun B, Gao Y, Song W, Zhao X, Gao Y, Xie Z, Zhang N, Ji J, Yuan H, Lou H. Design and synthesis of furyl/thineyl pyrroloquinolones based on natural alkaloid perlolyrine, lead to the discovery of potent and selective PDE5 inhibitors. Eur J Med Chem 2018; 150:30-38. [DOI: 10.1016/j.ejmech.2018.02.039] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2017] [Revised: 02/12/2018] [Accepted: 02/12/2018] [Indexed: 12/20/2022]
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39
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Dong J, Xia Q, Yan C, Song H, Liu Y, Wang Q. C(sp3)–H Azidation Reaction: A Protocol for Preparation of Aminals. J Org Chem 2018; 83:4516-4524. [DOI: 10.1021/acs.joc.8b00235] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Affiliation(s)
- Jianyang Dong
- State Key Laboratory of Elemento-Organic Chemistry, Research Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, People’s Republic of China
| | - Qing Xia
- State Key Laboratory of Elemento-Organic Chemistry, Research Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, People’s Republic of China
| | - Changcun Yan
- State Key Laboratory of Elemento-Organic Chemistry, Research Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, People’s Republic of China
| | - Hongjian Song
- State Key Laboratory of Elemento-Organic Chemistry, Research Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, People’s Republic of China
| | - Yuxiu Liu
- State Key Laboratory of Elemento-Organic Chemistry, Research Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, People’s Republic of China
| | - Qingmin Wang
- State Key Laboratory of Elemento-Organic Chemistry, Research Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, People’s Republic of China
- Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin 300071, People’s Republic of China
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40
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A novel tetrahydroisoquinoline (THIQ) analogue induces mitochondria-dependent apoptosis. Eur J Med Chem 2018; 150:719-728. [PMID: 29573707 DOI: 10.1016/j.ejmech.2018.03.017] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2017] [Revised: 03/04/2018] [Accepted: 03/05/2018] [Indexed: 12/31/2022]
Abstract
Lung cancer continues to be a leading cause of cancer-related death worldwide, with non-small cell lung cancer (NSCLC) accounting for more than 80% of lung cancer cases. Current therapies for NSCLC have only limited effect and treatment resistance develops rapidly. In a previous study, we have shown that C1-phenylethynyl tetrahydroisoquinoline (THIQ) analogue 4 has anti-proliferative activity against PC3 human prostate cancer cells. However, this anticancer effect was achieved with relatively high IC50 in A549 lung cancer cells. To improve the potency of the drug, in the present study, a series of novel THIQ analogues (analogues 5a-d) were prepared by using an oxidative C-H functionalization strategy, and their potential anticancer activities on A549 lung cancer cells were investigated. Among these analogues, analogue 5c can markedly inhibit A549 cell proliferation in a dose-dependent manner with a reasonable IC50 of 14.61 ± 1.03 μM. This effect was mediated by analogue 5c-induced G0/G1 phase arrest and cell apoptosis. Treatment with analogue 5c was shown to induce reactive oxygen species (ROS) accumulation, disruption of mitochondrial membrane potential, reduction of glutathione, elevation of intracellular calcium ion (Ca2+), and activation of Caspase-3. Furthermore, analogue 5c can lead to DNA double-strand break and the activation of p53 pathway in A549 cells. In conclusion, the oxidative C-H functionalization strategy to generate analogue 5c could improve the drug anticancer efficacy by inducing mitochondria-dependent apoptosis in A549 cells.
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41
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Punirun T, Soorukram D, Kuhakarn C, Reutrakul V, Pohmakotr M. Oxidative Difluoromethylation of Tetrahydroisoquinolines Using TMSCF 2SPh: Synthesis of Fluorinated Pyrrolo[2,1-a]isoquinolines and Benzo[a]quinolizidines. J Org Chem 2018; 83:765-782. [PMID: 29271203 DOI: 10.1021/acs.joc.7b02783] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
An efficient C1-difluoromethylation of tetrahydroisoquinolenes was achieved using TMSCF2SPh as a difluoromethylating agent and 2,2,6,6-tetramethylpiperidine-1-oxoammonium tetrafluoroborate (TEMPO+BF4-) as an oxidant. The process provides an access to a variety of C1-difluoro(phenylsulfanyl)methylated tetrahydroisoquinoline adducts in good yields. These adducts were employed as key precursors for preparing fluorinated pyrrolo[2,1-a]isoquinoline and benzo[a]quinolizidines.
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Affiliation(s)
- Teerachai Punirun
- Center of Excellence for Innovation in Chemistry (PERCH-CIC) and Department of Chemistry, Faculty of Science, Mahidol University , Rama VI Road, Bangkok 10400, Thailand
| | - Darunee Soorukram
- Center of Excellence for Innovation in Chemistry (PERCH-CIC) and Department of Chemistry, Faculty of Science, Mahidol University , Rama VI Road, Bangkok 10400, Thailand
| | - Chutima Kuhakarn
- Center of Excellence for Innovation in Chemistry (PERCH-CIC) and Department of Chemistry, Faculty of Science, Mahidol University , Rama VI Road, Bangkok 10400, Thailand
| | - Vichai Reutrakul
- Center of Excellence for Innovation in Chemistry (PERCH-CIC) and Department of Chemistry, Faculty of Science, Mahidol University , Rama VI Road, Bangkok 10400, Thailand
| | - Manat Pohmakotr
- Center of Excellence for Innovation in Chemistry (PERCH-CIC) and Department of Chemistry, Faculty of Science, Mahidol University , Rama VI Road, Bangkok 10400, Thailand
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42
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Capilla AS, Soucek R, Grau L, Romero M, Rubio-Martínez J, Caignard DH, Pujol MD. Substituted tetrahydroisoquinolines: synthesis, characterization, antitumor activity and other biological properties. Eur J Med Chem 2018; 145:51-63. [PMID: 29324343 DOI: 10.1016/j.ejmech.2017.12.098] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2017] [Revised: 12/29/2017] [Accepted: 12/30/2017] [Indexed: 10/18/2022]
Abstract
This work deals with the molecular design, synthesis and biological activity of a series of tetrahydro[1,4]dioxanisoquinolines and dimethoxyisoquinoline analogues. This study describes the synthesis strategy of these potential antitumor compounds, their multi-step synthesis and their optimization. A series of tetrahydroisoquinolines was synthesized and their cytotoxicity evaluated. Some of these tetrahydroisoquinolines showed promising KRas inhibition, antiangiogenesis activity and antiosteoporosis properties. Molecular modeling studies showed that compound 12 bind in the p1 pocket of the KRas protein making interactions with the hydrophobic residues Leu56, Tyr64, Tyr71 and Thr74 and hydrogen bonds with residues Glu37 and Asp38.
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Affiliation(s)
- A Sergi Capilla
- Laboratori de Química Farmacèutica (Unitat associada al CSIC), Facultat de Farmàcia, Universitat de Barcelona, Spain
| | - Richard Soucek
- Laboratori de Química Farmacèutica (Unitat associada al CSIC), Facultat de Farmàcia, Universitat de Barcelona, Spain
| | - Laura Grau
- Laboratori de Química Farmacèutica (Unitat associada al CSIC), Facultat de Farmàcia, Universitat de Barcelona, Spain
| | - Manel Romero
- Laboratori de Química Farmacèutica (Unitat associada al CSIC), Facultat de Farmàcia, Universitat de Barcelona, Spain
| | - Jaime Rubio-Martínez
- Department of Physical Chemistry, Faculty of Chemistry, University of Barcelona and the Institut de Recerca en Química Teòrica i Computacional (IQTCUB), Barcelona, Spain
| | - Daniel H Caignard
- Les laboratoires Servier, 1 rue Carle Hébert-92415, Courbevoie Cedex, 92200 Neuilly-sur Seine, France
| | - Maria Dolors Pujol
- Laboratori de Química Farmacèutica (Unitat associada al CSIC), Facultat de Farmàcia, Universitat de Barcelona, Spain.
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43
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Wei Y, Wang J, Wang Y, Yao X, Yang C, Huo C. Auto-oxidation promoted sp3 C–H arylation of glycine derivatives. Org Biomol Chem 2018; 16:4985-4989. [DOI: 10.1039/c8ob01068d] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
An auto-oxidation promoted sp3 C–H arylation reaction between N-aryl glycine derivatives and electron-rich arenes, leading to the formation of N-aryl α-aryl α-amino acid derivatives, is described. This atom-economical and environmentally benign reaction proceeds smoothly under mild reaction conditions and requires only Brønsted acid and oxygen (balloon). A plausible radical involved mechanism is proposed.
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Affiliation(s)
- Yuanyuan Wei
- College of Chemistry and Chemical Engineering
- Northwest Normal University Lanzhou
- Gansu 730070
- China
| | - Jie Wang
- College of Chemistry and Chemical Engineering
- Northwest Normal University Lanzhou
- Gansu 730070
- China
| | - Yajun Wang
- College of Chemistry and Chemical Engineering
- Northwest Normal University Lanzhou
- Gansu 730070
- China
| | - Xiaoqiang Yao
- College of Chemistry and Chemical Engineering
- Northwest Normal University Lanzhou
- Gansu 730070
- China
| | - Caixia Yang
- College of Chemistry and Chemical Engineering
- Northwest Normal University Lanzhou
- Gansu 730070
- China
| | - Congde Huo
- College of Chemistry and Chemical Engineering
- Northwest Normal University Lanzhou
- Gansu 730070
- China
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44
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Moriyama K. Recent advances in oxidative C–C coupling reaction of amides with carbon nucleophiles. Tetrahedron Lett 2017. [DOI: 10.1016/j.tetlet.2017.10.081] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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45
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Kim YH, Gil MG, Kim DY. Diethyl Azodicarboxylate-promoted Oxidative Coupling Reaction of N
-Phenyl Tetrahydroisoquinoline with β-Keto Acids. B KOREAN CHEM SOC 2017. [DOI: 10.1002/bkcs.11307] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Yong Hwan Kim
- Department of Chemistry; Soonchunhyang University; Chungnam 31538 Korea
| | - Min Gyun Gil
- Department of Chemistry; Soonchunhyang University; Chungnam 31538 Korea
| | - Dae Young Kim
- Department of Chemistry; Soonchunhyang University; Chungnam 31538 Korea
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46
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Pothikumar R, Sujatha C, Namitharan K. Transition-Metal-Free In Situ Generation of Terminal Alkenes: Synthesis of Multisubstituted Acrylamidines via Tandem sp3 C–H Olefination/sp2 C–H Arylation Reactions. ACS Catal 2017. [DOI: 10.1021/acscatal.7b02819] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Rajagopal Pothikumar
- Organic
Synthesis and Catalysis Laboratory, SRM Research Institute, SRM University, Chennai 603203, India
| | - Chandragiri Sujatha
- Organic
Synthesis and Catalysis Laboratory, SRM Research Institute, SRM University, Chennai 603203, India
| | - Kayambu Namitharan
- Organic
Synthesis and Catalysis Laboratory, SRM Research Institute, SRM University, Chennai 603203, India
- Department
of Chemistry, SRM University-AP, Amaravati 522502, India
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47
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Li SS, Fu S, Wang L, Xu L, Xiao J. t-BuOK-Mediated Oxidative Dehydrogenative C(sp 3)-H Arylation of 2-Alkylazaarenes with Nitroarenes. J Org Chem 2017; 82:8703-8709. [PMID: 28737943 DOI: 10.1021/acs.joc.7b00732] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
The first transition-metal free and regioselective C(sp3)-H arylation of 2-alkylazaarenes with nitroarenes has been achieved via t-BuOK-mediated dehydrogenative C(sp3)-C(sp2) coupling. This reaction provides an efficient access to the biologically important and synthetically useful 2-benzyl-substituted azaarenes under mild conditions without the need of prefunctionalization of 2-alkylazaarenes or using the specialized arylating agents.
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Affiliation(s)
- Shuai-Shuai Li
- College of Chemistry and Pharmaceutical Sciences, Qingdao Agricultural University , Qingdao 266109, China
| | - Shiheng Fu
- College of Chemistry and Pharmaceutical Sciences, Qingdao Agricultural University , Qingdao 266109, China
| | - Liang Wang
- College of Chemistry and Pharmaceutical Sciences, Qingdao Agricultural University , Qingdao 266109, China
| | - Lubin Xu
- College of Chemistry and Pharmaceutical Sciences, Qingdao Agricultural University , Qingdao 266109, China
| | - Jian Xiao
- College of Chemistry and Pharmaceutical Sciences, Qingdao Agricultural University , Qingdao 266109, China
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48
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Huang T, Liu X, Lang J, Xu J, Lin L, Feng X. Asymmetric Aerobic Oxidative Cross-Coupling of Tetrahydroisoquinolines with Alkynes. ACS Catal 2017. [DOI: 10.1021/acscatal.7b01912] [Citation(s) in RCA: 61] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Tianyu Huang
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, P. R. China
| | - Xiaohua Liu
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, P. R. China
| | - Jiawen Lang
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, P. R. China
| | - Jian Xu
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, P. R. China
| | - Lili Lin
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, P. R. China
| | - Xiaoming Feng
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, P. R. China
- Collaborative Innovation Center of Chemical Science and Engineering, Tianjin 300072, P. R. China
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49
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Purkait A, Roy SK, Srivastava HK, Jana CK. Metal-Free Sequential C(sp 2)-H/OH and C(sp 3)-H Aminations of Nitrosoarenes and N-Heterocycles to Ring-Fused Imidazoles. Org Lett 2017; 19:2540-2543. [PMID: 28485602 DOI: 10.1021/acs.orglett.7b00832] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Hydrogen bond assisted ortho-selective C(sp2)-H amination of nitrosoarenes and subsequent α-C(sp3)-H functionalization of aliphatic amines is achieved under metal-free conditions. The annulation of nitrosoarenes and 2-hydroxy-C-nitroso compounds with N-heterocycles provides a facile excess to a wide range of biologically relevant ring-fused benzimidazoles and structurally novel polycyclic imidazoles, respectively. Nucleophilic aromatic hydrogen substitution (SNArH) was found to be preferred over classical SNAr reaction during the C(sp2)-H amination of halogenated nitrosoarenes.
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Affiliation(s)
- Anisha Purkait
- Department of Chemistry, Indian Institute of Technology Guwahati , Guwahati, India 781039
| | - Subhra Kanti Roy
- Department of Chemistry, Indian Institute of Technology Guwahati , Guwahati, India 781039
| | | | - Chandan K Jana
- Department of Chemistry, Indian Institute of Technology Guwahati , Guwahati, India 781039
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50
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Kwon SJ, Gil MG, Kim DY. Visible light mediated photocatalytic oxidative coupling reaction of N -phenyl tetrahydroisoquinoline with β-keto acids. Tetrahedron Lett 2017. [DOI: 10.1016/j.tetlet.2017.03.026] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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