1
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Seo K, Jang SH, Rhee YH. Sequential Metal Catalysis towards 7‐Oxostaurosporine and Its Non‐Natural Septanose Analogue. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202112524] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Kyeongdeok Seo
- Department of Chemistry Pohang University of Science and Technology Cheongam-Ro 77, Nam-Gu Pohang, Kyeongbuk 37673 Republic of Korea
| | - Seok Hyeon Jang
- Department of Chemistry Pohang University of Science and Technology Cheongam-Ro 77, Nam-Gu Pohang, Kyeongbuk 37673 Republic of Korea
| | - Young Ho Rhee
- Department of Chemistry Pohang University of Science and Technology Cheongam-Ro 77, Nam-Gu Pohang, Kyeongbuk 37673 Republic of Korea
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2
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Zhuang H, Lu N, Ji N, Han F, Miao C. Bu
4
NHSO
4
‐Catalyzed Direct
N
‐Allylation of Pyrazole and its Derivatives with Allylic Alcohols in Water: A Metal‐Free, Recyclable and Sustainable System. Adv Synth Catal 2021. [DOI: 10.1002/adsc.202100864] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Affiliation(s)
- Hongfeng Zhuang
- College of Chemistry and Material Science Shandong Agricultural University Tai'an 271018 Shandong People's Republic of China
| | - Nan Lu
- College of Chemistry and Material Science Shandong Agricultural University Tai'an 271018 Shandong People's Republic of China
| | - Na Ji
- College of Chemistry and Material Science Shandong Agricultural University Tai'an 271018 Shandong People's Republic of China
| | - Feng Han
- College of Chemistry and Material Science Shandong Agricultural University Tai'an 271018 Shandong People's Republic of China
| | - Chengxia Miao
- College of Chemistry and Material Science Shandong Agricultural University Tai'an 271018 Shandong People's Republic of China
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3
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Seo K, Jang SH, Rhee YH. Sequential Metal Catalysis towards 7-Oxostaurosporine and Its Non-Natural Septanose Analogue. Angew Chem Int Ed Engl 2021; 61:e202112524. [PMID: 34786807 DOI: 10.1002/anie.202112524] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2021] [Indexed: 11/09/2022]
Abstract
We report sequential metal catalysis towards indolocarbazole glycosides. The signature event is highlighted by i) Pd0 -catalyzed addition of indolocarbazole to alkoxyallene combined with ring-closing-metathesis; ii) Ru-catalyzed chemoselective olefin migration; iii) PdII -catalyzed oxidative cyclization to build the bicyclic core structure of the target compounds. This approach gave access to both natural pyranose- and non-natural septanose glycosides. A short formal synthesis of 7-oxostaurosporine was achieved via this strategy.
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Affiliation(s)
- Kyeongdeok Seo
- Department of Chemistry, Pohang University of Science and Technology, Cheongam-Ro 77, Nam-Gu, Pohang, Kyeongbuk, 37673, Republic of Korea
| | - Seok Hyeon Jang
- Department of Chemistry, Pohang University of Science and Technology, Cheongam-Ro 77, Nam-Gu, Pohang, Kyeongbuk, 37673, Republic of Korea
| | - Young Ho Rhee
- Department of Chemistry, Pohang University of Science and Technology, Cheongam-Ro 77, Nam-Gu, Pohang, Kyeongbuk, 37673, Republic of Korea
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4
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Sun M, Liu M, Li C. Rhodium-Catalyzed Chemodivergent Regio- and Enantioselective Allylic Alkylation of Indoles. Chemistry 2021; 27:3457-3462. [PMID: 33289185 DOI: 10.1002/chem.202004613] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2020] [Revised: 11/30/2020] [Indexed: 12/25/2022]
Abstract
The control of C3/N1 chemoselectivity in indole alkylation with the same electrophiles is still challenging. An Rh/bisoxazolinephosphane-catalyzed chemodivergent regio- and enantioselective allylic alkylation of indoles was developed. Chiral C3- and N1-allylindoles can be selectively obtained with high branched/linear ratio and up to 99 % ee by changing the counteranion of Rh, the allylic carbonate, the reaction temperature, and the ligand.
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Affiliation(s)
- Minghe Sun
- Shanghai Key Laboratory for Molecular Engineering of Chiral, School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai, 200240, P. R. China
| | - Min Liu
- Shanghai Key Laboratory for Molecular Engineering of Chiral, School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai, 200240, P. R. China
| | - Changkun Li
- Shanghai Key Laboratory for Molecular Engineering of Chiral, School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai, 200240, P. R. China
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5
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Glatz F, Petrone DA, Carreira EM. Ir-Catalyzed Enantioconvergent Synthesis of Diversely Protected Allenylic Amines Employing Ammonia Surrogates. Angew Chem Int Ed Engl 2020; 59:16404-16408. [PMID: 32558158 DOI: 10.1002/anie.202005599] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2020] [Indexed: 01/14/2023]
Abstract
The first iridium catalyzed, enantioconvergent amination of allenylic carbonates is reported. This process utilizes various commercially available carbamates and sulfonamides to generate allenylic amines including commonly employed protected groups (Boc, Fmoc, Cbz, Ts, Ns) in 62-82 % yield and 87-98 % ee. The products generated through this scalable procedure serve as effective linchpins for the rapid, enantiospecific synthesis of a wide range of complex structures.
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Affiliation(s)
- Fabian Glatz
- Laboratorium für Organische Chemie, HCI H335, Eidgenössiche Technische Hochschule Zürich, Vladimir-Prelog-Weg 3, 8093, Zürich, Switzerland
| | - David A Petrone
- Laboratorium für Organische Chemie, HCI H335, Eidgenössiche Technische Hochschule Zürich, Vladimir-Prelog-Weg 3, 8093, Zürich, Switzerland
| | - Erick M Carreira
- Laboratorium für Organische Chemie, HCI H335, Eidgenössiche Technische Hochschule Zürich, Vladimir-Prelog-Weg 3, 8093, Zürich, Switzerland
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6
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Glatz F, Petrone DA, Carreira EM. Ir‐Catalyzed Enantioconvergent Synthesis of Diversely Protected Allenylic Amines Employing Ammonia Surrogates. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202005599] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Fabian Glatz
- Laboratorium für Organische Chemie, HCI H335Eidgenössiche Technische Hochschule Zürich Vladimir-Prelog-Weg 3 8093 Zürich Switzerland
| | - David A. Petrone
- Laboratorium für Organische Chemie, HCI H335Eidgenössiche Technische Hochschule Zürich Vladimir-Prelog-Weg 3 8093 Zürich Switzerland
| | - Erick M. Carreira
- Laboratorium für Organische Chemie, HCI H335Eidgenössiche Technische Hochschule Zürich Vladimir-Prelog-Weg 3 8093 Zürich Switzerland
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7
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Rossi‐Ashton JA, Clarke AK, Donald JR, Zheng C, Taylor RJK, Unsworth WP, You S. Iridium-Catalyzed Enantioselective Intermolecular Indole C2-Allylation. Angew Chem Int Ed Engl 2020; 59:7598-7604. [PMID: 32091146 PMCID: PMC7217203 DOI: 10.1002/anie.202001956] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2020] [Indexed: 12/22/2022]
Abstract
The enantioselective intermolecular C2-allylation of 3-substituted indoles is reported for the first time. This directing group-free approach relies on a chiral Ir-(P, olefin) complex and Mg(ClO4 )2 Lewis acid catalyst system to promote allylic substitution, providing the C2-allylated products in typically high yields (40-99 %) and enantioselectivities (83-99 % ee) with excellent regiocontrol. Experimental studies and DFT calculations suggest that the reaction proceeds via direct C2-allylation, rather than C3-allylation followed by in situ migration. Steric congestion at the indole-C3 position and improved π-π stacking interactions have been identified as major contributors to the C2-selectivity.
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Affiliation(s)
| | | | | | - Chao Zheng
- State Key Laboratory of Organometallic ChemistryShanghai Institute of Organic ChemistryChinese Academy of Sciences345 Lingling LuShanghai200032China
| | | | | | - Shu‐Li You
- State Key Laboratory of Organometallic ChemistryShanghai Institute of Organic ChemistryChinese Academy of Sciences345 Lingling LuShanghai200032China
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8
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Zhao Y, Cai L, Huang T, Meng S, Chan ASC, Zhao J. Solvent‐Mediated C3/C7 Regioselective Switch in Chiral Phosphoric Acid‐Catalyzed Enantioselective Friedel‐Crafts Alkylation of Indoles with α‐Ketiminoesters. Adv Synth Catal 2020. [DOI: 10.1002/adsc.201901380] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Yunlong Zhao
- Guangdong Provincial Key Laboratory of Chiral Molecule and Drug Discovery, School of Pharmaceutical SciencesSun Yat-sen University Guangzhou 510006 People's Republic of China
| | - Lu Cai
- Guangdong Provincial Key Laboratory of Chiral Molecule and Drug Discovery, School of Pharmaceutical SciencesSun Yat-sen University Guangzhou 510006 People's Republic of China
| | - Tongkun Huang
- Guangdong Provincial Key Laboratory of Chiral Molecule and Drug Discovery, School of Pharmaceutical SciencesSun Yat-sen University Guangzhou 510006 People's Republic of China
| | - Shanshui Meng
- Guangdong Provincial Key Laboratory of Chiral Molecule and Drug Discovery, School of Pharmaceutical SciencesSun Yat-sen University Guangzhou 510006 People's Republic of China
| | - Albert S. C. Chan
- Guangdong Provincial Key Laboratory of Chiral Molecule and Drug Discovery, School of Pharmaceutical SciencesSun Yat-sen University Guangzhou 510006 People's Republic of China
| | - Junling Zhao
- Guangdong Provincial Key Laboratory of Chiral Molecule and Drug Discovery, School of Pharmaceutical SciencesSun Yat-sen University Guangzhou 510006 People's Republic of China
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9
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Rossi‐Ashton JA, Clarke AK, Donald JR, Zheng C, Taylor RJK, Unsworth WP, You S. Iridium‐Catalyzed Enantioselective Intermolecular Indole C2‐Allylation. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202001956] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
| | | | | | - Chao Zheng
- State Key Laboratory of Organometallic ChemistryShanghai Institute of Organic ChemistryChinese Academy of Sciences 345 Lingling Lu Shanghai 200032 China
| | | | | | - Shu‐Li You
- State Key Laboratory of Organometallic ChemistryShanghai Institute of Organic ChemistryChinese Academy of Sciences 345 Lingling Lu Shanghai 200032 China
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10
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Gandolfo E, Tang X, Raha Roy S, Melchiorre P. Photochemical Asymmetric Nickel‐Catalyzed Acyl Cross‐Coupling. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201910168] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
- Eugenio Gandolfo
- ICIQ – Institute of Chemical Research of Catalonia, the Barcelona Institute of Science and Technology Avenida Països Catalans 16-43007 Tarragona Spain
| | - Xinjun Tang
- ICIQ – Institute of Chemical Research of Catalonia, the Barcelona Institute of Science and Technology Avenida Països Catalans 16-43007 Tarragona Spain
| | - Sudipta Raha Roy
- ICIQ – Institute of Chemical Research of Catalonia, the Barcelona Institute of Science and Technology Avenida Països Catalans 16-43007 Tarragona Spain
| | - Paolo Melchiorre
- ICREA Passeig Lluís Companys 23 08010 Barcelona Spain
- ICIQ – Institute of Chemical Research of Catalonia, the Barcelona Institute of Science and Technology Avenida Països Catalans 16-43007 Tarragona Spain
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11
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Gandolfo E, Tang X, Raha Roy S, Melchiorre P. Photochemical Asymmetric Nickel-Catalyzed Acyl Cross-Coupling. Angew Chem Int Ed Engl 2019; 58:16854-16858. [PMID: 31532568 PMCID: PMC6900114 DOI: 10.1002/anie.201910168] [Citation(s) in RCA: 71] [Impact Index Per Article: 14.2] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2019] [Revised: 09/17/2019] [Indexed: 11/29/2022]
Abstract
Photochemical enantioselective nickel-catalyzed cross-coupling reactions are difficult to implement. We report a visible-light-mediated strategy that successfully couples symmetrical anhydrides and 4-alkyl dihydropyridines (DHPs) to afford enantioenriched α-substituted ketones under mild conditions. The chemistry does not require exogenous photocatalysts. It is triggered by the direct excitation of DHPs, which act as a radical source and as a reductant, facilitating the turnover of the chiral catalytic nickel complex.
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Affiliation(s)
- Eugenio Gandolfo
- ICIQ – Institute of Chemical Research of Catalonia, the Barcelona Institute of Science and TechnologyAvenida Països Catalans16-43007TarragonaSpain
| | - Xinjun Tang
- ICIQ – Institute of Chemical Research of Catalonia, the Barcelona Institute of Science and TechnologyAvenida Països Catalans16-43007TarragonaSpain
| | - Sudipta Raha Roy
- ICIQ – Institute of Chemical Research of Catalonia, the Barcelona Institute of Science and TechnologyAvenida Països Catalans16-43007TarragonaSpain
| | - Paolo Melchiorre
- ICREAPasseig Lluís Companys 2308010BarcelonaSpain
- ICIQ – Institute of Chemical Research of Catalonia, the Barcelona Institute of Science and TechnologyAvenida Països Catalans16-43007TarragonaSpain
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12
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Shen J, Gao Q, Wang G, Tong M, Chen L, Xu S. Cu‐NHC‐Catalyzed Enantioselective Conjugate Silyl addition to Indol‐1‐ylacrylate Derivatives. ChemistrySelect 2019. [DOI: 10.1002/slct.201903570] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Jun‐Jian Shen
- State Key Laboratory for Oxo Synthesis and Selective OxidationCentre for Excellence in Molecular SynthesisSuzhou Research InstituteLanzhou Institute of Chemical PhysicsChinese Academy of Sciences Lanzhou 730000 China
| | - Qian Gao
- State Key Laboratory for Oxo Synthesis and Selective OxidationCentre for Excellence in Molecular SynthesisSuzhou Research InstituteLanzhou Institute of Chemical PhysicsChinese Academy of Sciences Lanzhou 730000 China
| | - Guangzhu Wang
- State Key Laboratory for Oxo Synthesis and Selective OxidationCentre for Excellence in Molecular SynthesisSuzhou Research InstituteLanzhou Institute of Chemical PhysicsChinese Academy of Sciences Lanzhou 730000 China
| | - Min Tong
- State Key Laboratory for Oxo Synthesis and Selective OxidationCentre for Excellence in Molecular SynthesisSuzhou Research InstituteLanzhou Institute of Chemical PhysicsChinese Academy of Sciences Lanzhou 730000 China
| | - Lili Chen
- State Key Laboratory for Oxo Synthesis and Selective OxidationCentre for Excellence in Molecular SynthesisSuzhou Research InstituteLanzhou Institute of Chemical PhysicsChinese Academy of Sciences Lanzhou 730000 China
| | - Senmiao Xu
- State Key Laboratory for Oxo Synthesis and Selective OxidationCentre for Excellence in Molecular SynthesisSuzhou Research InstituteLanzhou Institute of Chemical PhysicsChinese Academy of Sciences Lanzhou 730000 China
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13
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Larionov VA, Savel'yeva TF, Medvedev MG, Stoletova NV, Smol'yakov AF, Gugkaeva ZT, Cruchter T, Maleev VI. The SelectiveN-Functionalization of Indoles viaaza-Michael Addition in the Ligand Sphere of a Chiral Nickel(II) Complex: Asymmetric Synthesis of (S)-1H-Indole-Alanine Derivatives. European J Org Chem 2019. [DOI: 10.1002/ejoc.201900650] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
- Vladimir A. Larionov
- A. N. Nesmeyanov Institute of Organoelement Compounds of Russian Academy of Sciences; Vavilov Str. 28 119991 Moscow Russia
- Department of Inorganic Chemistry; Peoples' Friendship University of Russia (RUDN University); Miklukho-Maklaya Str. 6 117198 Moscow Russia
| | - Tat'yana F. Savel'yeva
- A. N. Nesmeyanov Institute of Organoelement Compounds of Russian Academy of Sciences; Vavilov Str. 28 119991 Moscow Russia
| | - Michael G. Medvedev
- A. N. Nesmeyanov Institute of Organoelement Compounds of Russian Academy of Sciences; Vavilov Str. 28 119991 Moscow Russia
- N. D. Zelinsky Institute of Organic Chemistry of Russian Academy of Sciences; Leninsky Prospect 47 119991 Moscow Russia
- Department of Chemistry; Lomonosov Moscow State University; Leninskie Gory 1/3 119991 Moscow Russia
- National Research University Higher School of Economics (HSE); Myasnitskaya Str. 20 101000 Moscow Russia
| | - Nadezhda V. Stoletova
- A. N. Nesmeyanov Institute of Organoelement Compounds of Russian Academy of Sciences; Vavilov Str. 28 119991 Moscow Russia
| | - Alexander F. Smol'yakov
- A. N. Nesmeyanov Institute of Organoelement Compounds of Russian Academy of Sciences; Vavilov Str. 28 119991 Moscow Russia
- Plekhanov Russian University of Economics; Stremyanny Per. 36 117997 Moscow Russia
| | - Zalina T. Gugkaeva
- A. N. Nesmeyanov Institute of Organoelement Compounds of Russian Academy of Sciences; Vavilov Str. 28 119991 Moscow Russia
| | - Thomas Cruchter
- Fachbereich Chemie; Philipps-Universität Marburg; Hans-Meerwein-Strasse 4 35043 Marburg Germany
| | - Victor I. Maleev
- A. N. Nesmeyanov Institute of Organoelement Compounds of Russian Academy of Sciences; Vavilov Str. 28 119991 Moscow Russia
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14
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Kim SW, Schempp TT, Zbieg JR, Stivala CE, Krische MJ. Regio- and Enantioselective Iridium-Catalyzed N-Allylation of Indoles and Related Azoles with Racemic Branched Alkyl-Substituted Allylic Acetates. Angew Chem Int Ed Engl 2019; 58:7762-7766. [PMID: 30964961 DOI: 10.1002/anie.201902799] [Citation(s) in RCA: 35] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2019] [Indexed: 12/16/2022]
Abstract
Cyclometallated π-allyliridium C,O-benzoates modified with (S)-tol-BINAP, which are stable to air, water, and SiO2 , catalyze highly enantioselective N-allylations of indoles and related azoles. This reaction complements previously reported metal-catalyzed indole allylations in that complete levels of N versus C3 and branched versus linear regioselectivity are observed.
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Affiliation(s)
- Seung Wook Kim
- University of Texas at Austin, Department of Chemistry, 105 E 24th St. (A5300), Austin, TX, 78712-1167, USA
| | - Tabitha T Schempp
- University of Texas at Austin, Department of Chemistry, 105 E 24th St. (A5300), Austin, TX, 78712-1167, USA
| | - Jason R Zbieg
- Discovery Chemistry, Genentech, Inc., 1 DNA Way, South San Francisco, CA, 94080, USA
| | - Craig E Stivala
- Discovery Chemistry, Genentech, Inc., 1 DNA Way, South San Francisco, CA, 94080, USA
| | - Michael J Krische
- University of Texas at Austin, Department of Chemistry, 105 E 24th St. (A5300), Austin, TX, 78712-1167, USA
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15
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Kim SW, Schempp TT, Zbieg JR, Stivala CE, Krische MJ. Regio‐ and Enantioselective Iridium‐Catalyzed N‐Allylation of Indoles and Related Azoles with Racemic Branched Alkyl‐Substituted Allylic Acetates. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201902799] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Seung Wook Kim
- University of Texas at AustinDepartment of Chemistry 105 E 24th St. (A5300) Austin TX 78712-1167 USA
| | - Tabitha T. Schempp
- University of Texas at AustinDepartment of Chemistry 105 E 24th St. (A5300) Austin TX 78712-1167 USA
| | - Jason R. Zbieg
- Discovery ChemistryGenentech, Inc. 1 DNA Way South San Francisco CA 94080 USA
| | - Craig E. Stivala
- Discovery ChemistryGenentech, Inc. 1 DNA Way South San Francisco CA 94080 USA
| | - Michael J. Krische
- University of Texas at AustinDepartment of Chemistry 105 E 24th St. (A5300) Austin TX 78712-1167 USA
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16
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Zhou Y, Breit B. Rhodium-Catalyzed Asymmetric N−H Functionalization of Quinazolinones with Allenes and Allylic Carbonates: The First Enantioselective Formal Total Synthesis of (−)-Chaetominine. Chemistry 2017; 23:18156-18160. [DOI: 10.1002/chem.201705059] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2017] [Indexed: 12/16/2022]
Affiliation(s)
- Yirong Zhou
- Institut für Organische Chemie and Freiburg Institute of Advanced Studies (FRIAS); Albert-Ludwigs-Universität; Alberstr. 21 79104 Freiburg Germany
- Key Laboratory of Functional Small Organic Molecules; Ministry of Education; College of Chemistry and Chemical Engineering; Jiangxi Normal University; Nanchang 330022 China
| | - Bernhard Breit
- Institut für Organische Chemie and Freiburg Institute of Advanced Studies (FRIAS); Albert-Ludwigs-Universität; Alberstr. 21 79104 Freiburg Germany
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17
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Mwenda ET, Nguyen HM. Enantioselective Synthesis of 1,2-Diamines Containing Tertiary and Quaternary Centers through Rhodium-Catalyzed DYKAT of Racemic Allylic Trichloroacetimidates. Org Lett 2017; 19:4814-4817. [PMID: 28876951 DOI: 10.1021/acs.orglett.7b02256] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
The amination of racemic secondary and tertiary allylic trichloroacetimidates possessing β-nitrogen substituents and proximal nitrogen-containing heterocycles, via chiral diene-ligated rhodium-catalyzed dynamic kinetic asymmetric transformations (DYKAT), provides branched allylic 1,2-diamines with high enantioselectivity. The catalytic system can be applied to the synthesis of 1,2-diamines possessing two contiguous stereocenters with excellent diastereoselectivity. Furthermore, the nitrogen-containing heterocycles suppress competing vinyl azirdine formation, allowing for the high enantioselective syntheses of 1,2-diamines possessing tertiary and quaternary centers.
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Affiliation(s)
- Edward T Mwenda
- Department of Chemistry, University of Iowa, Iowa City , Iowa 52242, United States
| | - Hien M Nguyen
- Department of Chemistry, University of Iowa, Iowa City , Iowa 52242, United States
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18
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Guo W, Cai A, Xie J, Kleij AW. Asymmetric Synthesis of α,α-Disubstituted Allylic Amines through Palladium-Catalyzed Allylic Substitution. Angew Chem Int Ed Engl 2017; 56:11797-11801. [DOI: 10.1002/anie.201705825] [Citation(s) in RCA: 47] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2017] [Revised: 07/19/2017] [Indexed: 12/27/2022]
Affiliation(s)
- Wusheng Guo
- Institute of Chemical Research of Catalonia (ICIQ); the Barcelona Institute of Science and Technology; Av. Països Catalans 16 43007 Tarragona Spain
| | - Aijie Cai
- Institute of Chemical Research of Catalonia (ICIQ); the Barcelona Institute of Science and Technology; Av. Països Catalans 16 43007 Tarragona Spain
| | - Jianing Xie
- Institute of Chemical Research of Catalonia (ICIQ); the Barcelona Institute of Science and Technology; Av. Països Catalans 16 43007 Tarragona Spain
| | - Arjan W. Kleij
- Institute of Chemical Research of Catalonia (ICIQ); the Barcelona Institute of Science and Technology; Av. Països Catalans 16 43007 Tarragona Spain
- Catalan Institute of Research and Advanced Studies (ICREA); Pg. Lluís Companys 23 08010 Barcelona Spain
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19
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Guo W, Cai A, Xie J, Kleij AW. Asymmetric Synthesis of α,α-Disubstituted Allylic Amines through Palladium-Catalyzed Allylic Substitution. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201705825] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Affiliation(s)
- Wusheng Guo
- Institute of Chemical Research of Catalonia (ICIQ); the Barcelona Institute of Science and Technology; Av. Països Catalans 16 43007 Tarragona Spain
| | - Aijie Cai
- Institute of Chemical Research of Catalonia (ICIQ); the Barcelona Institute of Science and Technology; Av. Països Catalans 16 43007 Tarragona Spain
| | - Jianing Xie
- Institute of Chemical Research of Catalonia (ICIQ); the Barcelona Institute of Science and Technology; Av. Països Catalans 16 43007 Tarragona Spain
| | - Arjan W. Kleij
- Institute of Chemical Research of Catalonia (ICIQ); the Barcelona Institute of Science and Technology; Av. Països Catalans 16 43007 Tarragona Spain
- Catalan Institute of Research and Advanced Studies (ICREA); Pg. Lluís Companys 23 08010 Barcelona Spain
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20
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Chen M, Sun J. Catalytic Asymmetric N-Alkylation of Indoles and Carbazoles through 1,6-Conjugate Addition of Aza-para-quinone Methides. Angew Chem Int Ed Engl 2017; 56:4583-4587. [PMID: 28332764 DOI: 10.1002/anie.201701947] [Citation(s) in RCA: 94] [Impact Index Per Article: 13.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2017] [Revised: 03/01/2017] [Indexed: 01/24/2023]
Abstract
Catalytic asymmetric N-alkylation of indoles and carbazoles represents a family of important but underdeveloped reactions. Herein, we describe a new organocatalytic strategy in which in situ generated aza-para-quinone methides are employed as the alkylating reagent. With the proper choice of a chiral phosphoric acid and an N-protective group, the intermolecular C-N bond formation with various indole and carbazole nucleophiles proceeded efficiently under mild conditions with excellent enantioselectivity and functional-group compatibility. Control experiments and kinetic studies provided important insight into the reaction mechanism.
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Affiliation(s)
- Min Chen
- Department of Chemistry, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong SAR, China
| | - Jianwei Sun
- Department of Chemistry, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong SAR, China
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21
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Chen M, Sun J. Catalytic Asymmetric N-Alkylation of Indoles and Carbazoles through 1,6-Conjugate Addition of Aza-para
-quinone Methides. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201701947] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Min Chen
- Department of Chemistry; The Hong Kong University of Science and Technology; Clear Water Bay, Kowloon Hong Kong SAR China
| | - Jianwei Sun
- Department of Chemistry; The Hong Kong University of Science and Technology; Clear Water Bay, Kowloon Hong Kong SAR China
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22
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Ling L, Cao J, Hu J, Zhang H. Copper-catalyzed N-alkylation of indoles by N-tosylhydrazones. RSC Adv 2017. [DOI: 10.1039/c7ra03765a] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
An efficient method for direct N-alkylation of indoles via copper-catalyzed reductive cross coupling between N-tosylhydrazones and indoles has been developed.
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Affiliation(s)
- Li Ling
- College of Chemistry & Chemical Engineering
- Inner Mongolia University
- Hohhot 010021
- P. R. China
- Inner Mongolia Key Laboratory of Fine Organic Synthesis
| | - Jing Cao
- College of Chemistry & Chemical Engineering
- Inner Mongolia University
- Hohhot 010021
- P. R. China
| | - Jianfeng Hu
- College of Chemistry & Chemical Engineering
- Inner Mongolia University
- Hohhot 010021
- P. R. China
- Inner Mongolia Key Laboratory of Fine Organic Synthesis
| | - Hao Zhang
- College of Chemistry & Chemical Engineering
- Inner Mongolia University
- Hohhot 010021
- P. R. China
- Inner Mongolia Key Laboratory of Fine Organic Synthesis
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23
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Zhang ZX, Chen SC, Jiao L. Total Synthesis of (+)-Minfiensine: Construction of the Tetracyclic Core Structure by an Asymmetric Cascade Cyclization. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201602771] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Ze-Xin Zhang
- Center of Basic Molecular Science (CBMS), Department of Chemistry; Tsinghua University; Beijing 100084 China
| | - Si-Cong Chen
- Center of Basic Molecular Science (CBMS), Department of Chemistry; Tsinghua University; Beijing 100084 China
| | - Lei Jiao
- Center of Basic Molecular Science (CBMS), Department of Chemistry; Tsinghua University; Beijing 100084 China
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24
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Zhang ZX, Chen SC, Jiao L. Total Synthesis of (+)-Minfiensine: Construction of the Tetracyclic Core Structure by an Asymmetric Cascade Cyclization. Angew Chem Int Ed Engl 2016; 55:8090-4. [DOI: 10.1002/anie.201602771] [Citation(s) in RCA: 43] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2016] [Indexed: 11/05/2022]
Affiliation(s)
- Ze-Xin Zhang
- Center of Basic Molecular Science (CBMS), Department of Chemistry; Tsinghua University; Beijing 100084 China
| | - Si-Cong Chen
- Center of Basic Molecular Science (CBMS), Department of Chemistry; Tsinghua University; Beijing 100084 China
| | - Lei Jiao
- Center of Basic Molecular Science (CBMS), Department of Chemistry; Tsinghua University; Beijing 100084 China
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25
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Brønsted Acid Catalyzed [3+2]-Cycloaddition of 2-Vinylindoles with In Situ Generated 2-Methide-2H-indoles: Highly Enantioselective Synthesis of Pyrrolo[1,2-a]indoles. Chemistry 2016; 22:7074-8. [DOI: 10.1002/chem.201601020] [Citation(s) in RCA: 76] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2016] [Indexed: 01/17/2023]
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26
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Jiang SZ, Zeng XY, Liang X, Lei T, Wei K, Yang YR. Iridium-Catalyzed Enantioselective Indole Cyclization: Application to the Total Synthesis and Absolute Stereochemical Assignment of (−)-Aspidophylline A. Angew Chem Int Ed Engl 2016; 55:4044-8. [PMID: 26891145 DOI: 10.1002/anie.201511549] [Citation(s) in RCA: 125] [Impact Index Per Article: 15.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2015] [Revised: 01/30/2016] [Indexed: 11/10/2022]
Affiliation(s)
- Shi-Zhi Jiang
- State Key Laboratory of Phytochemistry and Plant Resources in West China; Kunming Institute of Botany; Chinese Academy of Sciences, Lanhei 132#; Kunming 650201 China
| | - Xue-Yi Zeng
- State Key Laboratory of Phytochemistry and Plant Resources in West China; Kunming Institute of Botany; Chinese Academy of Sciences, Lanhei 132#; Kunming 650201 China
- University of Chinese Academy of Sciences; Beijing 100039 China
| | - Xiao Liang
- State Key Laboratory of Phytochemistry and Plant Resources in West China; Kunming Institute of Botany; Chinese Academy of Sciences, Lanhei 132#; Kunming 650201 China
- University of Chinese Academy of Sciences; Beijing 100039 China
| | - Ting Lei
- State Key Laboratory of Phytochemistry and Plant Resources in West China; Kunming Institute of Botany; Chinese Academy of Sciences, Lanhei 132#; Kunming 650201 China
| | - Kun Wei
- State Key Laboratory of Phytochemistry and Plant Resources in West China; Kunming Institute of Botany; Chinese Academy of Sciences, Lanhei 132#; Kunming 650201 China
| | - Yu-Rong Yang
- State Key Laboratory of Phytochemistry and Plant Resources in West China; Kunming Institute of Botany; Chinese Academy of Sciences, Lanhei 132#; Kunming 650201 China
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27
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Jiang SZ, Zeng XY, Liang X, Lei T, Wei K, Yang YR. Iridium-Catalyzed Enantioselective Indole Cyclization: Application to the Total Synthesis and Absolute Stereochemical Assignment of (−)-Aspidophylline A. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201511549] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Shi-Zhi Jiang
- State Key Laboratory of Phytochemistry and Plant Resources in West China; Kunming Institute of Botany; Chinese Academy of Sciences, Lanhei 132#; Kunming 650201 China
| | - Xue-Yi Zeng
- State Key Laboratory of Phytochemistry and Plant Resources in West China; Kunming Institute of Botany; Chinese Academy of Sciences, Lanhei 132#; Kunming 650201 China
- University of Chinese Academy of Sciences; Beijing 100039 China
| | - Xiao Liang
- State Key Laboratory of Phytochemistry and Plant Resources in West China; Kunming Institute of Botany; Chinese Academy of Sciences, Lanhei 132#; Kunming 650201 China
- University of Chinese Academy of Sciences; Beijing 100039 China
| | - Ting Lei
- State Key Laboratory of Phytochemistry and Plant Resources in West China; Kunming Institute of Botany; Chinese Academy of Sciences, Lanhei 132#; Kunming 650201 China
| | - Kun Wei
- State Key Laboratory of Phytochemistry and Plant Resources in West China; Kunming Institute of Botany; Chinese Academy of Sciences, Lanhei 132#; Kunming 650201 China
| | - Yu-Rong Yang
- State Key Laboratory of Phytochemistry and Plant Resources in West China; Kunming Institute of Botany; Chinese Academy of Sciences, Lanhei 132#; Kunming 650201 China
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28
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Chen LY, Yu XY, Chen JR, Feng B, Zhang H, Qi YH, Xiao WJ. Enantioselective direct functionalization of indoles by Pd/sulfoxide-phosphine-catalyzed N-allylic alkylation. Org Lett 2015; 17:1381-4. [PMID: 25738835 DOI: 10.1021/acs.orglett.5b00077] [Citation(s) in RCA: 49] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
A general and efficient Pd/sulfoxide-phosphine complex-catalyzed direct asymmetric N-allylic alkylation of indoles has been developed to allow for the preparation of various N-allylated indoles in generally good yields with excellent enantioselectivities. This catalytic system could also be extended to other N-containing heterocycles with good results.
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Affiliation(s)
- Li-Yan Chen
- †Key Laboratory of Pesticide and Chemical Biology, Ministry of Education, College of Chemistry, Central China Normal University, Wuhan 430079, China
| | - Xiao-Ye Yu
- †Key Laboratory of Pesticide and Chemical Biology, Ministry of Education, College of Chemistry, Central China Normal University, Wuhan 430079, China
| | - Jia-Rong Chen
- †Key Laboratory of Pesticide and Chemical Biology, Ministry of Education, College of Chemistry, Central China Normal University, Wuhan 430079, China
| | - Bin Feng
- †Key Laboratory of Pesticide and Chemical Biology, Ministry of Education, College of Chemistry, Central China Normal University, Wuhan 430079, China
| | - Hong Zhang
- †Key Laboratory of Pesticide and Chemical Biology, Ministry of Education, College of Chemistry, Central China Normal University, Wuhan 430079, China
| | - Ying-Hua Qi
- †Key Laboratory of Pesticide and Chemical Biology, Ministry of Education, College of Chemistry, Central China Normal University, Wuhan 430079, China
| | - Wen-Jing Xiao
- †Key Laboratory of Pesticide and Chemical Biology, Ministry of Education, College of Chemistry, Central China Normal University, Wuhan 430079, China.,‡State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000, China
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29
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Starkov P, Jamison TF, Marek I. Electrophilic Amination: The Case of Nitrenoids. Chemistry 2015; 21:5278-300. [DOI: 10.1002/chem.201405779] [Citation(s) in RCA: 58] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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30
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Yang D, Wang L, Han F, Li D, Zhao D, Cao Y, Ma Y, Kong W, Sun Q, Wang R. Highly Enantioselective Ring-Opening Reactions of Aziridines with Indole and Its Application in the Building of C3-Halogenated Pyrroloindolines. Chemistry 2014; 20:16478-83. [DOI: 10.1002/chem.201404354] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2014] [Indexed: 11/11/2022]
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31
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Zhu YY, Li X, Yu HY, Xiong YF, Zhang P, Pi HF, Ruan HL. Alkaloids from the bulbs of Lycoris longituba and their neuroprotective and acetylcholinesterase inhibitory activities. Arch Pharm Res 2014; 38:604-13. [PMID: 25219454 DOI: 10.1007/s12272-014-0397-2] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2014] [Accepted: 04/08/2014] [Indexed: 12/27/2022]
Abstract
Three novel alkaloids (1-3), together with nineteen known ones (4-22), were isolated from the bulbs of Lycoris longituba. Their structures were elucidated on the basis of extensive spectroscopic analyses, which belong to several Amaryllidaceae alkaloid skeletons. Among them, the harmane-type alkaloids (the new compound 1 and the known compounds 5, 6 and 7) were found for the first time from Lycoris genus. The isolates were tested for their neuroprotective activities against CoCl2, H2O2 and Aβ25-35-induced SH-SY5Y cell injuries, and the majority of them exhibited neuroprotective activities of different degrees. The acetylcholinesterase (AChE) inhibitory activities of the isolated alkaloids were also evaluated, while compounds 12, 14-20 and 22 exhibited extremely significant AChE inhibitory activities.
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Affiliation(s)
- Yun-Yun Zhu
- Faculty of Pharmacy, Tongji Medical College of Huazhong University of Science and Technology, Hangkong Road 13, Wuhan, 430030, People's Republic of China
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32
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Sunaba H, Kamata K, Mizuno N. Selective N-Alkylation of Indoles with α,β-Unsaturated Compounds Catalyzed by a Monomeric Phosphate. ChemCatChem 2014. [DOI: 10.1002/cctc.201402309] [Citation(s) in RCA: 15] [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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33
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Ye KY, Dai LX, You SL. Regio- and Enantioselective Synthesis ofN-Allylindoles by Iridium-Catalyzed Allylic Amination/Transition-Metal-Catalyzed Cyclization Reactions. Chemistry 2014; 20:3040-4. [DOI: 10.1002/chem.201400026] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2014] [Indexed: 12/16/2022]
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34
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Sevov CS, Zhou JS, Hartwig JF. Iridium-catalyzed, intermolecular hydroamination of unactivated alkenes with indoles. J Am Chem Soc 2014; 136:3200-7. [PMID: 24483848 DOI: 10.1021/ja412116d] [Citation(s) in RCA: 112] [Impact Index Per Article: 11.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
The addition of an N-H bond to an olefin is the most direct route for the synthesis of alkylamines. Currently, intermolecular hydroamination is limited to reactions of a narrow range of reagents containing N-H bonds or activated alkenes, and all the examples of additions to unactivated alkenes require large excesses of alkene. We report intermolecular hydroamination reactions of indoles with unactivated olefins. The reactions occur with as few as 1.5 equiv of olefin to form N-alkylindoles exclusively and in good yield. Characterizations of the catalyst resting state, kinetic data, labeling studies, and computational data imply that the addition occurs by olefin insertion into the Ir-N bond of an N-indolyl complex and that this insertion reaction is faster than insertion of olefin into the Ir-C bond of the isomeric C-2-indolyl complex.
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Affiliation(s)
- Christo S Sevov
- Division of Chemical Sciences, Lawrence Berkeley National Laboratory, Department of Chemistry, University of California , Berkeley, California 94720
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35
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Xu K, Thieme N, Breit B. Atom-Economic, Regiodivergent, and Stereoselective Coupling of Imidazole Derivatives with Terminal Allenes. Angew Chem Int Ed Engl 2014. [DOI: 10.1002/ange.201309126] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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36
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Xu K, Thieme N, Breit B. Atom-Economic, Regiodivergent, and Stereoselective Coupling of Imidazole Derivatives with Terminal Allenes. Angew Chem Int Ed Engl 2014; 53:2162-5. [DOI: 10.1002/anie.201309126] [Citation(s) in RCA: 85] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2013] [Indexed: 11/08/2022]
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37
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Du L, Cao P, Xing J, Lou Y, Jiang L, Li L, Liao J. Hydrogen-bond-promoted palladium catalysis: allylic alkylation of indoles with unsymmetrical 1,3-disubstituted allyl acetates using chiral bis(sulfoxide) phosphine ligands. Angew Chem Int Ed Engl 2013; 52:4207-11. [PMID: 23463674 DOI: 10.1002/anie.201209485] [Citation(s) in RCA: 102] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2012] [Revised: 01/30/2013] [Indexed: 11/09/2022]
Affiliation(s)
- Le Du
- Natural Products Research Center, Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu 610041, China
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38
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Du L, Cao P, Xing J, Lou Y, Jiang L, Li L, Liao J. Hydrogen-Bond-Promoted Palladium Catalysis: Allylic Alkylation of Indoles with Unsymmetrical 1,3-Disubstituted Allyl Acetates Using Chiral Bis(sulfoxide) Phosphine Ligands. Angew Chem Int Ed Engl 2013. [DOI: 10.1002/ange.201209485] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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39
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Cheng HG, Lu LQ, Wang T, Yang QQ, Liu XP, Li Y, Deng QH, Chen JR, Xiao WJ. Highly Enantioselective Friedel-Crafts Alkylation/N-Hemiacetalization Cascade Reaction with Indoles. Angew Chem Int Ed Engl 2013. [DOI: 10.1002/ange.201209998] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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40
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Cheng HG, Lu LQ, Wang T, Yang QQ, Liu XP, Li Y, Deng QH, Chen JR, Xiao WJ. Highly Enantioselective Friedel-Crafts Alkylation/N-Hemiacetalization Cascade Reaction with Indoles. Angew Chem Int Ed Engl 2013; 52:3250-4. [DOI: 10.1002/anie.201209998] [Citation(s) in RCA: 146] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2012] [Indexed: 11/05/2022]
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41
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Luo Y, Carnell AJ, Lam HW. Enantioselective Rhodium-Catalyzed Addition of Potassium Alkenyltrifluoroborates to Cyclic Imines. Angew Chem Int Ed Engl 2012; 51:6762-6. [DOI: 10.1002/anie.201202136] [Citation(s) in RCA: 129] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2012] [Indexed: 11/05/2022]
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42
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Luo Y, Carnell AJ, Lam HW. Enantioselective Rhodium-Catalyzed Addition of Potassium Alkenyltrifluoroborates to Cyclic Imines. Angew Chem Int Ed Engl 2012. [DOI: 10.1002/ange.201202136] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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43
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Madrahimov ST, Hartwig JF. Origins of enantioselectivity during allylic substitution reactions catalyzed by metallacyclic iridium complexes. J Am Chem Soc 2012; 134:8136-47. [PMID: 22486270 PMCID: PMC3368983 DOI: 10.1021/ja212217j] [Citation(s) in RCA: 75] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
In depth mechanistic studies of iridium catalyzed regioselective and enantioselective allylic substitution reactions are presented. A series of cyclometalated allyliridium complexes that are kinetically and chemically competent to be intermediates in the allylic substitution reactions was prepared and characterized by 1D and 2D NMR spectroscopies and single-crystal X-ray difraction. The rates of epimerization of the less thermodynamically stable diastereomeric allyliridium complexes to the thermodynamically more stable allyliridium stereoisomers were measured. The rates of nucleophilic attack by aniline and by N-methylaniline on the isolated allyliridium complexes were also measured. Attack on the thermodynamically less stable allyliridium complex was found to be orders of magnitude faster than attack on the thermodynamically more stable complex, yet the major enantiomer of the catalytic reaction is formed from the more stable diastereomer. Comparison of the rates of nucleophilic attack to the rates of epimerization of the diastereomeric allyliridium complexes containing a weakly coordinating counterion showed that nucleophilic attack on the less stable allyliridium species is much faster than conversion of the less stable isomer to the more stable isomer. These observations imply that Curtin-Hammett conditions are not met during iridium catalyzed allylic substitution reactions by η(3)-η(1)-η(3) interconversion. Rather, these data imply that when these conditions exist for this reaction, they are created by reversible oxidative addition, and the high selectivity of this oxidative addition step to form the more stable diastereomeric allyl complex leads to the high enantioselectivity. The stereochemical outcome of the individual steps of allylic substitution was assessed by reactions of deuterium-labeled substrates. The allylic substitution was shown to occur by oxidative addition with inversion of configuration, followed by an outer sphere nucleophilic attack that leads to a second inversion of configuration. This result contrasts the changes in configuration that occur during reactions of molybdenum complexes studied with these substrates previously. In short, these studies show that the factors that control the enantioselectivity of iridium-catalyzed allylic substitution are distinct from those that control enantioselectivity during allylic substitution catalyzed by palladium or molybdenum complexes and lead to the unique combination of high regioselectivity, enantioselectivity, and scope of reactive nucleophile.
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Affiliation(s)
- Sherzod T. Madrahimov
- Department of Chemistry, University of Illinois, 600 South Mathews Av. Urbana, IL 61801 and Department of Chemistry, University of California, Berkeley, Berkeley, CA 94720-1460
| | - John F. Hartwig
- Department of Chemistry, University of Illinois, 600 South Mathews Av. Urbana, IL 61801 and Department of Chemistry, University of California, Berkeley, Berkeley, CA 94720-1460
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44
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Liu WB, Zhang X, Dai LX, You SL. AsymmetricN-Allylation of Indoles Through the Iridium-Catalyzed Allylic Alkylation/Oxidation of Indolines. Angew Chem Int Ed Engl 2012; 51:5183-7. [DOI: 10.1002/anie.201200649] [Citation(s) in RCA: 99] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2012] [Indexed: 11/09/2022]
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45
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Liu WB, Zhang X, Dai LX, You SL. AsymmetricN-Allylation of Indoles Through the Iridium-Catalyzed Allylic Alkylation/Oxidation of Indolines. Angew Chem Int Ed Engl 2012. [DOI: 10.1002/ange.201200649] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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46
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Wu QF, Zheng C, You SL. Enantioselective Synthesis of Spiro Cyclopentane-1,3′-indoles and 2,3,4,9-Tetrahydro-1H-carbazoles by Iridium-Catalyzed Allylic Dearomatization and Stereospecific Migration. Angew Chem Int Ed Engl 2012. [DOI: 10.1002/ange.201107677] [Citation(s) in RCA: 86] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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47
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Wu QF, Zheng C, You SL. Enantioselective synthesis of spiro cyclopentane-1,3'-indoles and 2,3,4,9-tetrahydro-1H-carbazoles by iridium-catalyzed allylic dearomatization and stereospecific migration. Angew Chem Int Ed Engl 2012; 51:1680-3. [PMID: 22223488 DOI: 10.1002/anie.201107677] [Citation(s) in RCA: 224] [Impact Index Per Article: 18.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2011] [Indexed: 12/19/2022]
Affiliation(s)
- Qing-Feng Wu
- State Key Laboratory of Organometallic Chemistry, Shanghai, Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Lu, Shanghai 200032, China
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48
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Das K, Shibuya R, Nakahara Y, Germain N, Ohshima T, Mashima K. Platinum-Catalyzed Direct Amination of Allylic Alcohols with Aqueous Ammonia: Selective Synthesis of Primary Allylamines. Angew Chem Int Ed Engl 2011. [DOI: 10.1002/ange.201106737] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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49
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Das K, Shibuya R, Nakahara Y, Germain N, Ohshima T, Mashima K. Platinum-catalyzed direct amination of allylic alcohols with aqueous ammonia: selective synthesis of primary allylamines. Angew Chem Int Ed Engl 2011; 51:150-4. [PMID: 22086866 DOI: 10.1002/anie.201106737] [Citation(s) in RCA: 73] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2011] [Indexed: 11/12/2022]
Affiliation(s)
- Kalpataru Das
- Department of Chemistry, Graduate School of Engineering Science, Osaka University, CREST, Toyonaka, Osaka 560-8531, Japan
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50
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Xie Y, Zhao Y, Qian B, Yang L, Xia C, Huang H. Enantioselective N-H Functionalization of Indoles with α,β-Unsaturated γ-Lactams Catalyzed by Chiral Brønsted Acids. Angew Chem Int Ed Engl 2011; 50:5682-6. [DOI: 10.1002/anie.201102046] [Citation(s) in RCA: 105] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2011] [Indexed: 11/10/2022]
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