1
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Imamoto T. P-Stereogenic Phosphorus Ligands in Asymmetric Catalysis. Chem Rev 2024; 124:8657-8739. [PMID: 38954764 DOI: 10.1021/acs.chemrev.3c00875] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/04/2024]
Abstract
Chiral phosphorus ligands play a crucial role in asymmetric catalysis for the efficient synthesis of useful optically active compounds. They are largely categorized into two classes: backbone chirality ligands and P-stereogenic phosphorus ligands. Most of the reported ligands belong to the former class. Privileged ones such as BINAP and DuPhos are frequently employed in a wide range of catalytic asymmetric transformations. In contrast, the latter class of P-stereogenic phosphorus ligands has remained a small family for many years mainly because of their synthetic difficulty. The late 1990s saw the emergence of novel P-stereogenic phosphorus ligands with their superior enantioinduction ability in Rh-catalyzed asymmetric hydrogenation reactions. Since then, numerous P-stereogenic phosphorus ligands have been synthesized and used in catalytic asymmetric reactions. This Review summarizes P-stereogenic phosphorus ligands reported thus far, including their stereochemical and electronic properties that afford high to excellent enantioselectivities. Examples of reactions that use this class of ligands are described together with their applications in the construction of key intermediates for the synthesis of optically active natural products and therapeutic agents. The literature covered dates back to 1968 up until December 2023, centering on studies published in the late 1990s and later years.
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Affiliation(s)
- Tsuneo Imamoto
- Department of Chemistry, Graduate School of Science, Chiba University, Chiba 263-8522, Japan
- Division of Applied Chemistry, Graduate School of Engineering, Hokkaido University, Sapporo, Hokkaido 060-8628, Japan
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2
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Dutta S, Kim JH, Bhatt K, Rickertsen DRL, Abboud KA, Ghiviriga I, Seidel D. Alicyclic-Amine-Derived Imine-BF 3 Complexes: Easy-to-Make Building Blocks for the Synthesis of Valuable α-Functionalized Azacycles. Angew Chem Int Ed Engl 2024; 63:e202313247. [PMID: 37909921 PMCID: PMC10835740 DOI: 10.1002/anie.202313247] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2023] [Revised: 10/26/2023] [Accepted: 10/29/2023] [Indexed: 11/03/2023]
Abstract
A new strategy to access α-functionalized alicyclic amines via their corresponding imine-BF3 complexes is reported. Isolable imine-BF3 complexes, readily prepared via dehydrohalogenation of N-bromoamines in a base-promoted/18-crown-6 catalyzed process followed by addition of boron trifluoride etherate, undergo reactions with a wide range of organometallic nucleophiles to afford α-functionalized azacycles. Organozinc and organomagnesium nucleophiles add at ambient temperatures, obviating the need for cryogenic conditions. In situ preparation of imine-BF3 complexes provides access to α-functionalized morpholines and piperazines directly from their parent amines in a single operation. α-Functionalized morpholines can be elaborated further, for instance by installing a second substituent in the α'-position.
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Affiliation(s)
- Subhradeep Dutta
- Center for Heterocyclic Compounds, Department of Chemistry, University of Florida, Gainesville, FL 32611, USA
| | - Jae Hyun Kim
- Center for Heterocyclic Compounds, Department of Chemistry, University of Florida, Gainesville, FL 32611, USA
- College of Pharmacy, Chung-Ang University, Seoul, 06974, Republic of Korea
| | - Kamal Bhatt
- Center for Heterocyclic Compounds, Department of Chemistry, University of Florida, Gainesville, FL 32611, USA
| | - Dillon R L Rickertsen
- Center for Heterocyclic Compounds, Department of Chemistry, University of Florida, Gainesville, FL 32611, USA
| | - Khalil A Abboud
- Center for X-ray Crystallography, Department of Chemistry, University of Florida, Gainesville, FL 32611, USA
| | - Ion Ghiviriga
- Center for NMR Spectroscopy, Department of Chemistry, University of Florida, Gainesville, FL 32611, USA
| | - Daniel Seidel
- Center for Heterocyclic Compounds, Department of Chemistry, University of Florida, Gainesville, FL 32611, USA
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3
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Zhang B, Ruan J, Seidel D, Chen W. Palladium-Catalyzed Arylation of Endocyclic 1-Azaallyl Anions: Concise Synthesis of Unprotected Enantioenriched cis-2,3-Diarylpiperidines. Angew Chem Int Ed Engl 2023; 62:e202307638. [PMID: 37461285 PMCID: PMC10530244 DOI: 10.1002/anie.202307638] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2023] [Accepted: 07/17/2023] [Indexed: 07/29/2023]
Abstract
Unprotected cis-2,3-diarylpiperidines are synthesized through an unprecedented palladium-catalyzed cross-coupling reaction between aryl halides and elusive endocyclic 1-azaallyl anions. These intermediates are generated in situ by the deprotonation of 2-aryl-1-piperideines, precursors that are readily prepared in two operations from simple piperidines. An asymmetric version of this reaction with (2R, 3R)-iPr-BI-DIME as the ligand provides products in moderate to good yields and enantioselectivities. This study significantly expands the synthetic utility of endocyclic 1-azaallyl anions.
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Affiliation(s)
- Biao Zhang
- School of Chemical Science and Engineering, Institute for Advanced Studies, Tongji University, 1239 Siping Rd, Shanghai, 200092, P. R. of China
| | - Junhao Ruan
- School of Chemical Science and Engineering, Institute for Advanced Studies, Tongji University, 1239 Siping Rd, Shanghai, 200092, P. R. of China
| | - Daniel Seidel
- Center for Heterocyclic Compounds, Department of Chemistry, University of Florida, Gainesville, FL 32611, USA
| | - Weijie Chen
- School of Chemical Science and Engineering, Institute for Advanced Studies, Tongji University, 1239 Siping Rd, Shanghai, 200092, P. R. of China
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4
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Dutta S, Bhatt K, Cuffel F, Seidel D. Synthesis of Polycyclic Imidazoles via α-C-H/N-H Annulation of Alicyclic Amines. SYNTHESIS-STUTTGART 2023; 55:2343-2352. [PMID: 38314182 PMCID: PMC10836336 DOI: 10.1055/a-2022-1511] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
Secondary alicyclic amines are converted to their corresponding ring-fused imidazoles in a simple procedure consisting of oxidative imine formation followed by a van Leusen reaction. Amines with an existing α-substituent undergo regioselective ring-fusion at the α'-position. This method was utilized in a synthesis of fadrozole.
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Affiliation(s)
- Subhradeep Dutta
- Center for Heterocyclic Compounds, Department of Chemistry, University of Florida, Gainesville, Florida 32611, United States
| | - Kamal Bhatt
- Center for Heterocyclic Compounds, Department of Chemistry, University of Florida, Gainesville, Florida 32611, United States
| | - Fabian Cuffel
- Center for Heterocyclic Compounds, Department of Chemistry, University of Florida, Gainesville, Florida 32611, United States
| | - Daniel Seidel
- Center for Heterocyclic Compounds, Department of Chemistry, University of Florida, Gainesville, Florida 32611, United States
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5
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Xu C, Nader P, Xavier J, Captain B, Takenaka N. Evaluation of helicene-derived 2,2'-bipyridine N-monoxide catalyst for the enantioselective propargylation of N-acylhydrazones with allenyltrichlorosilane. Tetrahedron 2023; 141:133496. [PMID: 37790873 PMCID: PMC10545348 DOI: 10.1016/j.tet.2023.133496] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/05/2023]
Abstract
Helicene-derived 2,2'-bipyridine N-monoxide was evaluated as a Lewis base catalyst for the enantioselective propargylation of N-acylhydrazones with allenyltrichlorosilane. The helicene-derived catalyst provided moderate-to-good reactivity and enantioselectivity for a range of acylhydrazones. This study represents the first example of the catalytic asymmetric propargylation of non-activated acylhydrazones.
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Affiliation(s)
- Changgong Xu
- Chemistry Program, Department of Biomedical and Chemical Engineering and Sciences, Florida Institute of Technology, 150 West University Boulevard, Melbourne, FL 32901, USA
| | - Phillip Nader
- Chemistry Program, Department of Biomedical and Chemical Engineering and Sciences, Florida Institute of Technology, 150 West University Boulevard, Melbourne, FL 32901, USA
| | - Jonathan Xavier
- Chemistry Program, Department of Biomedical and Chemical Engineering and Sciences, Florida Institute of Technology, 150 West University Boulevard, Melbourne, FL 32901, USA
| | - Burjor Captain
- Department of Chemistry, University of Miami, 1301 Memorial Drive, Coral Gables, FL 33146-0431, USA
| | - Norito Takenaka
- Chemistry Program, Department of Biomedical and Chemical Engineering and Sciences, Florida Institute of Technology, 150 West University Boulevard, Melbourne, FL 32901, USA
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6
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Abonia R, Insuasty D, Laali KK. Recent Advances in the Synthesis of Propargyl Derivatives, and Their Application as Synthetic Intermediates and Building Blocks. Molecules 2023; 28:molecules28083379. [PMID: 37110613 PMCID: PMC10146578 DOI: 10.3390/molecules28083379] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2023] [Revised: 04/05/2023] [Accepted: 04/05/2023] [Indexed: 04/29/2023] Open
Abstract
The propargyl group is a highly versatile moiety whose introduction into small-molecule building blocks opens up new synthetic pathways for further elaboration. The last decade has witnessed remarkable progress in both the synthesis of propargylation agents and their application in the synthesis and functionalization of more elaborate/complex building blocks and intermediates. The goal of this review is to highlight these exciting advances and to underscore their impact.
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Affiliation(s)
- Rodrigo Abonia
- Research Group of Heterocyclic Compounds, Department of Chemistry, Universidad del Valle, Cali A.A. 25360, Colombia
| | - Daniel Insuasty
- Grupo de Investigación en Química y Biología, Departamento de Química y Biología, Universidad del Norte, Barranquilla 081007, Atlántico, Colombia
| | - Kenneth K Laali
- Department of Chemistry, University of North Florida, 1 UNF Drive, Jacksonville, FL 32224, USA
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7
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Chigumbu P, Fu J, Takia IRT, Wang Y, Han X. Friedel-Crafts Benzylation of Unprotected Anilines with Indole-3-
carbinols to Access Trifluoro-methyl(indolyl)phenylmethanes. LETT ORG CHEM 2022. [DOI: 10.2174/1570178618666210225114226] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
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An unprecedented protocol for the efficient and highly chemoselective alkylation of unprotected anilines with deactivated CF3-indole-3-carbinols promoted by In(OTf)3 has been developed. A series of diversified trifluoromethylated (indolyl)phenylmethanes were produced featuring the C-alkylation in moderate to high chemical yields and with high regioselectivities.
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Affiliation(s)
- Paidamoyo Chigumbu
- Provincial Key Laboratory for Chemical & Biological Processing, Technology of Farm Products, School of Biological
and Chemical Engineering, Zhejiang University of Science and Technology, Hangzhou, Zhejiang, China, 310023
| | - Junfeng Fu
- Provincial Key Laboratory for Chemical & Biological Processing, Technology of Farm Products, School of Biological
and Chemical Engineering, Zhejiang University of Science and Technology, Hangzhou, Zhejiang, China, 310023
| | - Ingrid Rakielle Tsapy Takia
- Provincial Key Laboratory for Chemical & Biological Processing, Technology of Farm Products, School of Biological
and Chemical Engineering, Zhejiang University of Science and Technology, Hangzhou, Zhejiang, China, 310023
| | - Yongjiang Wang
- Provincial Key Laboratory for Chemical & Biological Processing, Technology of Farm Products, School of Biological
and Chemical Engineering, Zhejiang University of Science and Technology, Hangzhou, Zhejiang, China, 310023
| | - Xiaoyu Han
- Provincial Key Laboratory for Chemical & Biological Processing, Technology of Farm Products, School of Biological
and Chemical Engineering, Zhejiang University of Science and Technology, Hangzhou, Zhejiang, China, 310023
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8
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Zhuang SY, Tang YX, Liu JY, Chen XL, Ma JT, Wu YD, Zheng KL, Wu AX. I 2-DMSO-Mediated N-H/α-C(sp 3)-H Difunctionalization of Tetrahydroisoquinoline: Formal [2 + 2 + 1] Annulation for the Construction of Pyrrolo[2,1- a]isoquinoline Derivatives. Org Lett 2022; 24:2858-2862. [PMID: 35394795 DOI: 10.1021/acs.orglett.2c00813] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
An I2-DMSO-mediated cascade reaction using methyl ketones and 1,2,3,4-tetrahydroisoquinolines (THIQs) as commercially available substrates has been developed for the construction of pyrrolo[2,1-a]isoquinoline derivatives. This metal-free process involves N-H/α-C(sp3)-H difunctionalization of THIQ. Two C-C bonds and one C-N bond are formed in one pot under mild conditions. Besides, a quaternary carbon center has been constructed in this transformation efficiently.
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Affiliation(s)
- Shi-Yi Zhuang
- Key Laboratory of Pesticide & Chemical Biology, Ministry of Education, College of Chemistry, Central China Normal University, Wuhan 430079, P.R. China
| | - Yong-Xing Tang
- Key Laboratory of Pesticide & Chemical Biology, Ministry of Education, College of Chemistry, Central China Normal University, Wuhan 430079, P.R. China
| | - Jin-Yi Liu
- Key Laboratory of Pesticide & Chemical Biology, Ministry of Education, College of Chemistry, Central China Normal University, Wuhan 430079, P.R. China
| | - Xiang-Long Chen
- Key Laboratory of Pesticide & Chemical Biology, Ministry of Education, College of Chemistry, Central China Normal University, Wuhan 430079, P.R. China
| | - Jin-Tian Ma
- Key Laboratory of Pesticide & Chemical Biology, Ministry of Education, College of Chemistry, Central China Normal University, Wuhan 430079, P.R. China
| | - Yan-Dong Wu
- Key Laboratory of Pesticide & Chemical Biology, Ministry of Education, College of Chemistry, Central China Normal University, Wuhan 430079, P.R. China
| | - Kai-Lu Zheng
- Guangdong Provincial Key Laboratory of Research and Development of Natural Drugs, School of Pharmacy, Guangdong Medical University, Dongguan 523808, P.R. China
| | - An-Xin Wu
- Key Laboratory of Pesticide & Chemical Biology, Ministry of Education, College of Chemistry, Central China Normal University, Wuhan 430079, P.R. China
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9
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Xie X, Bao M, Chen KW, Xu X, Hu W. Asymmetric three-component reaction of diazo compound with alcohol and seven-membered imine. Org Chem Front 2022. [DOI: 10.1039/d2qo00076h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A dirhodium and chiral phosphoric acid co-catalyzed asymmetric three-component reaction of diazo compound with alcohol and seven-membered imine has been developed via Mannich-type interception of transient oxonium ylide. This reaction...
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10
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Sangster JJ, Marshall JR, Turner NJ, Mangas-Sanchez J. New Trends and Future Opportunities in the Enzymatic Formation of C-C, C-N, and C-O bonds. Chembiochem 2021; 23:e202100464. [PMID: 34726813 PMCID: PMC9401909 DOI: 10.1002/cbic.202100464] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2021] [Revised: 10/29/2021] [Indexed: 01/04/2023]
Abstract
Organic chemistry provides society with fundamental products we use daily. Concerns about the impact that the chemical industry has over the environment is propelling major changes in the way we manufacture chemicals. Biocatalysis offers an alternative to other synthetic approaches as it employs enzymes, Nature's catalysts, to carry out chemical transformations. Enzymes are biodegradable, come from renewable sources, operate under mild reaction conditions, and display high selectivities in the processes they catalyse. As a highly multidisciplinary field, biocatalysis benefits from advances in different areas, and developments in the fields of molecular biology, bioinformatics, and chemical engineering have accelerated the extension of the range of available transformations (E. L. Bell et al., Nat. Rev. Meth. Prim. 2021, 1, 1-21). Recently, we surveyed advances in the expansion of the scope of biocatalysis via enzyme discovery and protein engineering (J. R. Marshall et al., Tetrahedron 2021, 82, 131926). Herein, we focus on novel enzymes currently available to the broad synthetic community for the construction of new C-C, C-N and C-O bonds, with the purpose of providing the non-specialist with new and alternative tools for chiral and sustainable chemical synthesis.
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Affiliation(s)
- Jack J Sangster
- Department of Chemistry, Manchester Institute of Biotechnology, University of Manchester, 131 Princess Street, Manchester, M1 7DN, UK
| | - James R Marshall
- Department of Chemistry, Manchester Institute of Biotechnology, University of Manchester, 131 Princess Street, Manchester, M1 7DN, UK
| | - Nicholas J Turner
- Department of Chemistry, Manchester Institute of Biotechnology, University of Manchester, 131 Princess Street, Manchester, M1 7DN, UK
| | - Juan Mangas-Sanchez
- Institute of Chemical Synthesis and Homogeneous Catalysis, Spanish National Research Council (CSIC), Pedro Cerbuna 12, 50009, Zaragoza, Spain.,ARAID Foundation, Zaragoza, Spain
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11
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Mohan C, Krishna RB, Sivanandan ST, Ibnusaud I. Synthesis of Pyrrolo[2,1‐
a
]isoquinoline Class of Natural Product Crispine A. European J Org Chem 2021. [DOI: 10.1002/ejoc.202100738] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Affiliation(s)
- Chithra Mohan
- Institute for Integrated Programmes and Research in Basic Sciences Mahatma Gandhi University Kottayam 686560 India
- School of Chemical Sciences Mahatma Gandhi University Kottayam 686560 India
| | - R. Bharath Krishna
- Institute for Integrated Programmes and Research in Basic Sciences Mahatma Gandhi University Kottayam 686560 India
| | | | - Ibrahim Ibnusaud
- Institute for Integrated Programmes and Research in Basic Sciences Mahatma Gandhi University Kottayam 686560 India
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12
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Valles DA, Dutta S, Paul A, Abboud KA, Ghiviriga I, Seidel D. α,α'-C-H Bond Difunctionalization of Unprotected Alicyclic Amines. Org Lett 2021; 23:6367-6371. [PMID: 34323490 PMCID: PMC8609614 DOI: 10.1021/acs.orglett.1c02187] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A simple one-pot procedure enables the sequential, regioselective, and diastereoselective introduction of the same or two different substituents to the α- and α'-positions of unprotected azacycles. Aryl, alkyl, and alkenyl substituents are introduced via their corresponding organolithium compounds. The scope of this transformation includes pyrrolidines, piperidines, azepanes, and piperazines.
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Affiliation(s)
- Daniel A. Valles
- Center for Heterocyclic Compounds, Department of Chemistry, University of Florida, Gainesville, Florida 32611, United States
| | - Subhradeep Dutta
- Center for Heterocyclic Compounds, Department of Chemistry, University of Florida, Gainesville, Florida 32611, United States
| | - Anirudra Paul
- Center for Heterocyclic Compounds, Department of Chemistry, University of Florida, Gainesville, Florida 32611, United States
| | - Khalil A. Abboud
- Center for X-ray Crystallography, Department of Chemistry, University of Florida, Gainesville, Florida 32611, United States
| | - Ion Ghiviriga
- Center for NMR Spectroscopy, Department of Chemistry, University of Florida, Gainesville, Florida 32611, United States
| | - Daniel Seidel
- Center for Heterocyclic Compounds, Department of Chemistry, University of Florida, Gainesville, Florida 32611, United States
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13
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Ben Maamer C, Mpawenayo PC, Lecachey B, Alouane N, Mangeney P, van der Lee A, Marrot J, Bouaouli S, Guillaumont M, Besbes R, Gerard H, Vrancken E, Campagne JM. Dynamic Kinetic Resolution Processes Based on the Switchable Configurational Instability of Allenyl Copper Reagents. Org Lett 2021; 23:6305-6310. [PMID: 34378945 DOI: 10.1021/acs.orglett.1c02095] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The configurational instability of allenyl copper reagents is unveiled. An experimental study highlights the crucial role of Li+ and of the reaction temperature in the control of the configurational stability of allenyl copper reagents. A judicious choice of the reaction conditions allows efficient dynamic kinetic resolution processes and gives a one-pot access to homopropargylic alcohols or amines bearing up to four contiguous defined stereogenic centers.
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Affiliation(s)
- Chayma Ben Maamer
- Institut Charles Gerhardt Montpellier, Univ. Montpellier, CNRS, ENSCM, Montpellier, France.,University of Tunis-El Manar, Faculty of Sciences of Tunis, Department of Chemistry, Laboratory of Analytical Chemistry and Electrochemistry, Campus Universities, 2092 Tunis El-Manar, Tunisia
| | - Pierre C Mpawenayo
- Institut Charles Gerhardt Montpellier, Univ. Montpellier, CNRS, ENSCM, Montpellier, France
| | - Baptiste Lecachey
- Institut Charles Gerhardt Montpellier, Univ. Montpellier, CNRS, ENSCM, Montpellier, France
| | - Nacira Alouane
- Laboratoire de Chimie Organique, Institut de Chimie Moléculaire, Univ. Paris 06, Paris, France
| | - Pierre Mangeney
- Laboratoire de Chimie Organique, Institut de Chimie Moléculaire, Univ. Paris 06, Paris, France
| | - Arie van der Lee
- Institut Européen des Membranes, Univ. Montpellier, CNRS, ENSCM, Montpellier, France
| | - Jérôme Marrot
- Institut Lavoisier de Versailles, UMR 8180, Université de Versailles, Saint-Quentin-en-Yvelines, France
| | - Samira Bouaouli
- Sorbonne Université, CNRS, Laboratoire de Chimie Théorique, LCT UMR 7616, Paris, France
| | - Maya Guillaumont
- Sorbonne Université, CNRS, Laboratoire de Chimie Théorique, LCT UMR 7616, Paris, France
| | - Rafâa Besbes
- University of Tunis-El Manar, Faculty of Sciences of Tunis, Department of Chemistry, Laboratory of Analytical Chemistry and Electrochemistry, Campus Universities, 2092 Tunis El-Manar, Tunisia
| | - Hélène Gerard
- Sorbonne Université, CNRS, Laboratoire de Chimie Théorique, LCT UMR 7616, Paris, France
| | - Emmanuel Vrancken
- Institut Charles Gerhardt Montpellier, Univ. Montpellier, CNRS, ENSCM, Montpellier, France
| | - Jean-Marc Campagne
- Institut Charles Gerhardt Montpellier, Univ. Montpellier, CNRS, ENSCM, Montpellier, France
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14
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Xiao X, Chen XH, Wang XX, Wu FY, Cui HL. NBS-mediated synthesis of bromodihydroindolizino[8,7-b]indole derivatives. Tetrahedron Lett 2021. [DOI: 10.1016/j.tetlet.2021.153255] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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15
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Chen W, Seidel D. α-C-H/N-H Annulation of Alicyclic Amines via Transient Imines: Preparation of Polycyclic Lactams. Org Lett 2021; 23:3729-3734. [PMID: 33881883 PMCID: PMC8175037 DOI: 10.1021/acs.orglett.1c01125] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Polycyclic lactams are prepared in a single operation from o-toluamides and cyclic amines in a process that involves transient cyclic imines, species that are conveniently obtained in situ from the corresponding lithium amides and simple ketone oxidants. Imines thus generated, such as 1-pyrroline and 1-piperideine, engage lithiated o-toluamides in a facile annulation process. Undesired side reactions such as imine deprotonation and o-toluamide dimerization are suppressed through the judicious choice of reaction conditions.
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Affiliation(s)
- Weijie Chen
- Center for Heterocyclic Compounds, Department of Chemistry, University of Florida, Gainesville, Florida, 32611, United States
| | - Daniel Seidel
- Center for Heterocyclic Compounds, Department of Chemistry, University of Florida, Gainesville, Florida, 32611, United States
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16
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Llobat A, Escorihuela J, Fustero S, Medio-Simón M. Diastereoselectivity of the Addition of Propargylic Magnesium Reagents to Fluorinated Aromatic Sulfinyl Imines. Org Lett 2021; 23:3691-3695. [PMID: 33881896 PMCID: PMC9490847 DOI: 10.1021/acs.orglett.1c01076] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
![]()
The
addition of propargylmagnesium bromide to fluorinated aromatic
sulfinyl imines gave homopropargyl amines with total regio- and diastereoselection.
Complete reversal of diastereoselectivity can be achieved in some
cases using coordinating (THF) or noncoordinating (DCM) solvents.
Substituted propargylic magnesium reagents have been also tested toward
fluorinated aryl sulfinyl imines affording chiral homoallenyl amines
with good yields and selectivity control. DFT calculations helped
to rationalize the origin of the experimental regio- and diastereoselectivities
observed in each case.
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Affiliation(s)
- Alberto Llobat
- Departamento de Química Orgánica, Universitat de València, Av. Vicent Andrés Estellés s/n, 46100 Burjassot, València, Spain
| | - Jorge Escorihuela
- Departamento de Química Orgánica, Universitat de València, Av. Vicent Andrés Estellés s/n, 46100 Burjassot, València, Spain
| | - Santos Fustero
- Departamento de Química Orgánica, Universitat de València, Av. Vicent Andrés Estellés s/n, 46100 Burjassot, València, Spain
| | - Mercedes Medio-Simón
- Departamento de Química Orgánica, Universitat de València, Av. Vicent Andrés Estellés s/n, 46100 Burjassot, València, Spain
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17
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Kim JH, Paul A, Ghiviriga I, Seidel D. α-C-H Bond Functionalization of Unprotected Alicyclic Amines: Lewis-Acid-Promoted Addition of Enolates to Transient Imines. Org Lett 2021; 23:797-801. [PMID: 33464093 PMCID: PMC7924990 DOI: 10.1021/acs.orglett.0c04024] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Enolizable cyclic imines, obtained in situ from their corresponding lithium amides by oxidation with simple ketone oxidants, are readily alkylated with a range of enolates to provide mono- and polycyclic β-aminoketones in a single operation, including the natural product (±)-myrtine. Nitrile anions also serve as competent nucleophiles in these transformations, which are promoted by BF3 etherate. β-Aminoesters derived from ester enolates can be converted to the corresponding β-lactams.
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Affiliation(s)
- Jae Hyun Kim
- Center for Heterocyclic Compounds, Department of Chemistry, University of Florida, Gainesville, Florida 32611, United States
| | - Anirudra Paul
- Center for Heterocyclic Compounds, Department of Chemistry, University of Florida, Gainesville, Florida 32611, United States
| | - Ion Ghiviriga
- Center for NMR Spectroscopy, Department of Chemistry, University of Florida, Gainesville, Florida 32611, United States
| | - Daniel Seidel
- Center for Heterocyclic Compounds, Department of Chemistry, University of Florida, Gainesville, Florida 32611, United States
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18
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Szabó T, Volk B, Milen M. Recent Advances in the Synthesis of β-Carboline Alkaloids. Molecules 2021; 26:663. [PMID: 33513936 PMCID: PMC7866041 DOI: 10.3390/molecules26030663] [Citation(s) in RCA: 36] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2020] [Revised: 01/16/2021] [Accepted: 01/21/2021] [Indexed: 12/31/2022] Open
Abstract
β-Carboline alkaloids are a remarkable family of natural and synthetic indole-containing heterocyclic compounds and they are widely distributed in nature. Recently, these alkaloids have been in the focus of interest, thanks to their diverse biological activities. Their pharmacological activity makes them desirable as sedative, anxiolytic, hypnotic, anticonvulsant, antitumor, antiviral, antiparasitic or antimicrobial drug candidates. The growing potential inherent in them encourages many researchers to address the challenges of the synthesis of natural products containing complex β-carboline frameworks. In this review, we describe the recent developments in the synthesis of β-carboline alkaloids and closely related derivatives through selected examples from the last 5 years. The focus is on the key steps with improved procedures and synthetic approaches. Furthermore the pharmacological potential of the alkaloids is also highlighted.
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Affiliation(s)
| | | | - Mátyás Milen
- Egis Pharmaceuticals Plc., Directorate of Drug Substance Development, P.O. Box 100, H-1475 Budapest, Hungary; (T.S.); (B.V.)
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19
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Gao J, Weng X, Ma C, Xu X, Fang P, Mei T. Electrochemical 2,2,6,6-tetramethylpiperidinyl-N-oxyl (TEMPO)-Mediated α-Cyanation and Phosphonylation of Cyclic Amines with Metal-Free Conditions. CHINESE J ORG CHEM 2021. [DOI: 10.6023/cjoc202103049] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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20
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Grace Victoria G, Rajasekhara Reddy S. Recent advances in the synthesis of organic chloramines and their insights into health care. NEW J CHEM 2021. [DOI: 10.1039/d1nj01086g] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Organic nitrogen–chlorine compounds and their derivatives are important heterocyclic motifs, exhibiting applications such as N-chlorinating agents, analytical reagents, disinfectants, antipathogens, and as synthetic intermediates for drugs, polymers, and natural products.
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Affiliation(s)
- G. Grace Victoria
- Department of Chemistry
- Vellore Institute of Technology (VIT)
- Vellore 632014
- India
- Department of Chemistry
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21
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Jamshaid F, Kondakal VV, Newman CD, Dobson R, João H, Rice CR, Mwansa JM, Thapa B, Hemming K. Cyclopropenones in the synthesis of indolizidine, pyrrolo[2,1-a]isoquinoline and indolizino[8,7-b]indole alkaloids. Tetrahedron 2020. [DOI: 10.1016/j.tet.2020.131570] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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22
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Cowper NGW, Hesse MJ, Chan KM, Reisman SE. A copper-catalyzed asymmetric oxime propargylation enables the synthesis of the gliovirin tetrahydro-1,2-oxazine core. Chem Sci 2020; 11:11897-11901. [PMID: 34094417 PMCID: PMC8162951 DOI: 10.1039/d0sc04802j] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022] Open
Abstract
The bicyclic tetrahydro-1,2-oxazine subunit of gliovirin is synthesized through a diastereoselective copper-catalyzed cyclization of an N-hydroxyamino ester. Oxidative elaboration to the fully functionalized bicycle was achieved through a series of mild transformations. Central to this approach was the development of the first catalytic, enantioselective propargylation of an oxime to furnish a key N-hydroyxamino ester intermediate. The bicyclic tetrahydro-1,2-oxazine subunit of gliovirin is synthesized through a diastereoselective copper-catalyzed cyclization of an N-hydroxyamino ester.![]()
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Affiliation(s)
- Nicholas G W Cowper
- The Warren and Katharine Schlinger Laboratory of Chemistry and Chemical Engineering, California Institute of Technology Pasadena CA 91125 USA
| | - Matthew J Hesse
- The Warren and Katharine Schlinger Laboratory of Chemistry and Chemical Engineering, California Institute of Technology Pasadena CA 91125 USA
| | - Katie M Chan
- The Warren and Katharine Schlinger Laboratory of Chemistry and Chemical Engineering, California Institute of Technology Pasadena CA 91125 USA
| | - Sarah E Reisman
- The Warren and Katharine Schlinger Laboratory of Chemistry and Chemical Engineering, California Institute of Technology Pasadena CA 91125 USA
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23
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Rapid functionalization of multiple C-H bonds in unprotected alicyclic amines. Nat Chem 2020; 12:545-550. [PMID: 32231260 DOI: 10.1038/s41557-020-0438-z] [Citation(s) in RCA: 51] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2019] [Accepted: 02/10/2020] [Indexed: 11/09/2022]
Abstract
The synthesis of valuable bioactive alicyclic amines containing variable substituents in multiple ring positions typically relies on multistep synthetic sequences that frequently require the introduction and subsequent removal of undesirable protecting groups. Although a vast number of studies have aimed to simplify access to such materials through the C-H bond functionalization of feedstock alicyclic amines, the simultaneous introduction of more than one substituent to unprotected amines has never been accomplished. Here we report an advance in C-H bond functionalization methodology that enables the introduction of up to three substituents in a single operation. Lithiated amines are first exposed to a ketone oxidant, generating transient imines that are subsequently converted to endocyclic 1-azaallyl anions, which can be processed further to furnish β-substituted, α,β-disubstituted, or α,β,α'-trisubstituted amines. This study highlights the unique utility of in situ-generated endocyclic 1-azaallyl anions, elusive intermediates in synthetic chemistry.
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24
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Yu S, Hua R, Fu X, Liu G, Zhang D, Jia S, Qiu H, Hu W. Asymmetric Multicomponent Reactions for Efficient Construction of Homopropargyl Amine Carboxylic Esters. Org Lett 2019; 21:5737-5741. [DOI: 10.1021/acs.orglett.9b02139] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Sifan Yu
- Guangdong Key Laboratory of Chiral Molecule and Drug Discovery, School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou 510006, China
| | - Ruyu Hua
- Guangdong Key Laboratory of Chiral Molecule and Drug Discovery, School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou 510006, China
| | - Xiang Fu
- Guangdong Key Laboratory of Chiral Molecule and Drug Discovery, School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou 510006, China
| | - Gengxin Liu
- Guangdong Key Laboratory of Chiral Molecule and Drug Discovery, School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou 510006, China
| | - Dan Zhang
- Guangdong Key Laboratory of Chiral Molecule and Drug Discovery, School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou 510006, China
| | - Shikun Jia
- Guangdong Key Laboratory of Chiral Molecule and Drug Discovery, School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou 510006, China
| | - Huang Qiu
- Guangdong Key Laboratory of Chiral Molecule and Drug Discovery, School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou 510006, China
| | - Wenhao Hu
- Guangdong Key Laboratory of Chiral Molecule and Drug Discovery, School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou 510006, China
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25
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Paul A, Seidel D. α-Functionalization of Cyclic Secondary Amines: Lewis Acid Promoted Addition of Organometallics to Transient Imines. J Am Chem Soc 2019; 141:8778-8782. [PMID: 31117670 DOI: 10.1021/jacs.9b04325] [Citation(s) in RCA: 87] [Impact Index Per Article: 17.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Cyclic imines, generated in situ from their corresponding N-lithiated amines and a ketone hydride acceptor, undergo reactions with a range of organometallic nucleophiles to generate α-functionalized amines in a single operation. Activation of the transient imines by Lewis acids that are compatible with the presence of lithium alkoxides was found to be crucial to accommodate a broad range of nucleophiles including lithium acetylides, Grignard reagents, and aryllithiums with attenuated reactivities.
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Affiliation(s)
- Anirudra Paul
- Center for Heterocyclic Compounds, Department of Chemistry , University of Florida , Gainesville , Florida 32611 , United States
| | - Daniel Seidel
- Center for Heterocyclic Compounds, Department of Chemistry , University of Florida , Gainesville , Florida 32611 , United States
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26
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Zhou Y, Shi Y, Torker S, Hoveyda AH. SN2″-Selective and Enantioselective Substitution with Unsaturated Organoboron Compounds and Catalyzed by a Sulfonate-Containing NHC-Cu Complex. J Am Chem Soc 2018; 140:16842-16854. [DOI: 10.1021/jacs.8b10885] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Yuebiao Zhou
- Department of Chemistry, Merkert Chemistry Center, Boston College, Chestnut Hill, Massachusetts 02467, United States
| | - Ying Shi
- Department of Chemistry, Merkert Chemistry Center, Boston College, Chestnut Hill, Massachusetts 02467, United States
| | - Sebastian Torker
- Department of Chemistry, Merkert Chemistry Center, Boston College, Chestnut Hill, Massachusetts 02467, United States
| | - Amir H. Hoveyda
- Department of Chemistry, Merkert Chemistry Center, Boston College, Chestnut Hill, Massachusetts 02467, United States
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27
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Patel ND, Sieber JD, Tcyrulnikov S, Simmons BJ, Rivalti D, Duvvuri K, Zhang Y, Gao DA, Fandrick KR, Haddad N, Lao KS, Mangunuru HPR, Biswas S, Qu B, Grinberg N, Pennino S, Lee H, Song JJ, Gupton BF, Garg NK, Kozlowski MC, Senanayake CH. Computationally Assisted Mechanistic Investigation and Development of Pd-Catalyzed Asymmetric Suzuki-Miyaura and Negishi Cross-Coupling Reactions for Tetra- ortho-Substituted Biaryl Synthesis. ACS Catal 2018; 8:10190-10209. [PMID: 30450265 DOI: 10.1021/acscatal.8b02509] [Citation(s) in RCA: 51] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
Metal-catalyzed cross-coupling reactions are extensively employed in both academia and industry for the synthesis of biaryl derivatives for applications to both medicine and material science. Application of these methods to prepare tetra-ortho-substituted biaryls leads to chiral atropisomeric products that introduces the opportunity to use catalyst-control to develop asymmetric cross-coupling procedures to access these important compounds. Asymmetric Pd-catalyzed Suzuki-Miyaura and Negishi cross-coupling reactions to form tetra-ortho-substituted biaryls were studied employing a collection of P-chiral dihydrobenzooxaphosphole (BOP) and dihydrobenzoazaphosphole (BAP) ligands. Enantioselectivities of up to 95:5 and 85:15 er were identified for the Suzuki-Miyaura and Negishi cross-coupling reactions, respectively. Unique ligands for the Suzuki-Miyaura reaction vs the Negishi reaction were identified. A computational study on these Suzuki-Miyaura and Negishi cross-coupling reactions enabled an understanding in the differences between the enantiodiscriminating events between these two cross-coupling reactions. These results support that enantioselectivity in the Negishi reaction results from the reductive elimination step, whereas all steps in the Suzuki-Miyaura catalytic cycle contribute to the overall enantioselection with transmetalation and reductive elimination providing the most contribution to the observed selectivities.
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Affiliation(s)
- Nitinchandra D. Patel
- Chemical Development, Boehringer Ingelheim Pharmaceuticals, Inc, 900 Ridgebury Road, Ridgefield, Connecticut 06877, United States
| | - Joshua D. Sieber
- Chemical Development, Boehringer Ingelheim Pharmaceuticals, Inc, 900 Ridgebury Road, Ridgefield, Connecticut 06877, United States
- Department of Chemistry, Virginia Commonwealth University, 1001 West Main Street, Richmond, Virginia 23284-3028, United States
| | - Sergei Tcyrulnikov
- Department of Chemistry, University of Pennsylvania, Philadelphia, Pennsylvania 19104-6323, United States
| | - Bryan J. Simmons
- Department of Chemistry and Biochemistry, University of California, Los Angeles, California 90095, United States
| | - Daniel Rivalti
- Chemical Development, Boehringer Ingelheim Pharmaceuticals, Inc, 900 Ridgebury Road, Ridgefield, Connecticut 06877, United States
- Department of Chemical and Life Science Engineering, Virginia Commonwealth University, 601 Main Street, P.O. Box 843028, Richmond, Virginia 23284-3028, United States
| | - Krishnaja Duvvuri
- Department of Chemistry and Biochemistry, The Ohio State University, 100 West 18th Avenue, Columbus, Ohio 43210, United States
| | - Yongda Zhang
- Chemical Development, Boehringer Ingelheim Pharmaceuticals, Inc, 900 Ridgebury Road, Ridgefield, Connecticut 06877, United States
| | - Donghong A. Gao
- Chemical Development, Boehringer Ingelheim Pharmaceuticals, Inc, 900 Ridgebury Road, Ridgefield, Connecticut 06877, United States
| | - Keith R. Fandrick
- Chemical Development, Boehringer Ingelheim Pharmaceuticals, Inc, 900 Ridgebury Road, Ridgefield, Connecticut 06877, United States
| | - Nizar Haddad
- Chemical Development, Boehringer Ingelheim Pharmaceuticals, Inc, 900 Ridgebury Road, Ridgefield, Connecticut 06877, United States
| | - Kendricks So Lao
- Department of Chemistry, University of Connecticut, 55 North Eagleville Road, Storrs, Connecticut 06269, United States
| | - Hari P. R. Mangunuru
- Chemical Development, Boehringer Ingelheim Pharmaceuticals, Inc, 900 Ridgebury Road, Ridgefield, Connecticut 06877, United States
- Department of Chemical and Life Science Engineering, Virginia Commonwealth University, 601 Main Street, P.O. Box 843028, Richmond, Virginia 23284-3028, United States
| | - Soumik Biswas
- Chemical Development, Boehringer Ingelheim Pharmaceuticals, Inc, 900 Ridgebury Road, Ridgefield, Connecticut 06877, United States
| | - Bo Qu
- Chemical Development, Boehringer Ingelheim Pharmaceuticals, Inc, 900 Ridgebury Road, Ridgefield, Connecticut 06877, United States
| | - Nelu Grinberg
- Chemical Development, Boehringer Ingelheim Pharmaceuticals, Inc, 900 Ridgebury Road, Ridgefield, Connecticut 06877, United States
| | - Scott Pennino
- Material and Analytical Sciences, Boehringer Ingelheim Pharmaceuticals, Inc., 900 Ridgebury Road, Ridgefield, Connecticut 06877, United States
| | - Heewon Lee
- Chemical Development, Boehringer Ingelheim Pharmaceuticals, Inc, 900 Ridgebury Road, Ridgefield, Connecticut 06877, United States
| | - Jinhua J. Song
- Chemical Development, Boehringer Ingelheim Pharmaceuticals, Inc, 900 Ridgebury Road, Ridgefield, Connecticut 06877, United States
| | - B. Frank Gupton
- Department of Chemical and Life Science Engineering, Virginia Commonwealth University, 601 Main Street, P.O. Box 843028, Richmond, Virginia 23284-3028, United States
| | - Neil K. Garg
- Department of Chemistry and Biochemistry, University of California, Los Angeles, California 90095, United States
| | - Marisa C. Kozlowski
- Department of Chemistry, University of Pennsylvania, Philadelphia, Pennsylvania 19104-6323, United States
| | - Chris H. Senanayake
- Chemical Development, Boehringer Ingelheim Pharmaceuticals, Inc, 900 Ridgebury Road, Ridgefield, Connecticut 06877, United States
- Astatech BioPharmaceutical Corporation, 488 Kelin West Road, Wengjiang, Chendu, Sichuan 611130, People’s Republic of China
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28
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Lennox AJJ, Goes SL, Webster MP, Koolman HF, Djuric SW, Stahl SS. Electrochemical Aminoxyl-Mediated α-Cyanation of Secondary Piperidines for Pharmaceutical Building Block Diversification. J Am Chem Soc 2018; 140:11227-11231. [PMID: 30141925 DOI: 10.1021/jacs.8b08145] [Citation(s) in RCA: 96] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Secondary piperidines are ideal pharmaceutical building blocks owing to the prevalence of piperidines in commercial drugs. Here, we report an electrochemical method for cyanation of the heterocycle adjacent to nitrogen without requiring protection or substitution of the N-H bond. The reaction utilizes ABNO (9-azabicyclononane N-oxyl) as a catalytic mediator. Electrochemical oxidation of ABNO generates the corresponding oxoammonium species, which promotes dehydrogenation of the 2° piperidine to the cyclic imine, followed by addition of cyanide. The low-potential, mediated electrolysis process is compatible with a wide range of heterocyclic and oxidatively sensitive substituents on the piperidine ring and enables synthesis of unnatural amino acids.
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Affiliation(s)
- Alastair J J Lennox
- Department of Chemistry , University of Wisconsin-Madison , 1101 University Avenue , Madison , Wisconsin 53706 , United States
| | - Shannon L Goes
- Department of Chemistry , University of Wisconsin-Madison , 1101 University Avenue , Madison , Wisconsin 53706 , United States
| | - Matthew P Webster
- AbbVie, Global Pharmaceutical R&D , 1 North Waukegan Road , North Chicago , Illinois 60064 , United States
| | - Hannes F Koolman
- AbbVie, Global Pharmaceutical R&D , 1 North Waukegan Road , North Chicago , Illinois 60064 , United States
| | - Stevan W Djuric
- AbbVie, Global Pharmaceutical R&D , 1 North Waukegan Road , North Chicago , Illinois 60064 , United States
| | - Shannon S Stahl
- Department of Chemistry , University of Wisconsin-Madison , 1101 University Avenue , Madison , Wisconsin 53706 , United States
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29
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Choudhary S, Pawar AP, Yadav J, Sharma DK, Kant R, Kumar I. One-Pot Synthesis of Chiral Tetracyclic Dibenzo[ b, f][1,4]oxazepine-Fused 1,2-Dihydropyridines (DHPs) under Metal-Free Conditions. J Org Chem 2018; 83:9231-9239. [PMID: 29906390 DOI: 10.1021/acs.joc.8b01232] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
An efficient protocol for the catalytic asymmetric synthesis of new dibenzo[ b, f][1,4]-oxazepine-fused 1,2-dihydropyridines (DHPs) has been described under metal-free conditions. This reaction proceeds through proline-catalyzed direct Mannich/cyclization between seven-membered dibenzo[ b, f][1,4]-oxazepine-imines and aqueous glutaraldehyde, followed by IBX-mediated site-selective dehydrogenative oxidation in one-pot operation with high yields (up to 92%) and excellent enantioselectivity (up to >99:1 er).
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Affiliation(s)
- Sachin Choudhary
- Department of Chemistry , Birla Institute of Technology & Science , Pilani 333 031 , India
| | - Amol Prakash Pawar
- Department of Chemistry , Birla Institute of Technology & Science , Pilani 333 031 , India
| | - Jyothi Yadav
- Department of Chemistry , Birla Institute of Technology & Science , Pilani 333 031 , India
| | - Devinder Kumar Sharma
- X-ray Crystallography Laboratory, Post-Graduate Department of Physics & Electronics , University of Jammu , Jammu and Kashmir 180 006 , India
| | - Rajni Kant
- X-ray Crystallography Laboratory, Post-Graduate Department of Physics & Electronics , University of Jammu , Jammu and Kashmir 180 006 , India
| | - Indresh Kumar
- Department of Chemistry , Birla Institute of Technology & Science , Pilani 333 031 , India
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30
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Abstract
Amines such as 1,2,3,4-tetrahydroisoquinoline undergo redox-neutral annulations with 2-(2-oxoethyl)malonates in the presence of catalytic amounts of benzoic acid. These reactions install a fully saturated five-membered ring and provide access to structures closely related to the natural products crispine A and harmicine.
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Affiliation(s)
- Zhengbo Zhu
- Center for Heterocyclic Compounds, Department of Chemistry, University of Florida, Gainesville, Florida 32611, United States
- Department of Chemistry and Chemical Biology, Rutgers, The State University of New Jersey, Piscataway, New Jersey 08854, United States
| | - Hemant S. Chandak
- Department of Chemistry and Chemical Biology, Rutgers, The State University of New Jersey, Piscataway, New Jersey 08854, United States
| | - Daniel Seidel
- Center for Heterocyclic Compounds, Department of Chemistry, University of Florida, Gainesville, Florida 32611, United States
- Department of Chemistry and Chemical Biology, Rutgers, The State University of New Jersey, Piscataway, New Jersey 08854, United States
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31
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Gu R, Flidrova K, Lehn JM. Dynamic Covalent Metathesis in the C═C/C═N Exchange between Knoevenagel Compounds and Imines. J Am Chem Soc 2018; 140:5560-5568. [DOI: 10.1021/jacs.8b01849] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Ruirui Gu
- Laboratoire de Chimie Supramoléculaire, Institut de Science et d’Ingénierie Supramoléculaires, Université de Strasbourg, 8 allée Gaspard Monge, 67000 Strasbourg, France
- Key Laboratory for Advanced Materials, School of Chemistry and Molecular Engineering, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, P. R. China
| | - Karolina Flidrova
- Laboratoire de Chimie Supramoléculaire, Institut de Science et d’Ingénierie Supramoléculaires, Université de Strasbourg, 8 allée Gaspard Monge, 67000 Strasbourg, France
| | - Jean-Marie Lehn
- Laboratoire de Chimie Supramoléculaire, Institut de Science et d’Ingénierie Supramoléculaires, Université de Strasbourg, 8 allée Gaspard Monge, 67000 Strasbourg, France
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32
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Gupta N, Tak R, Nazish M, Jakhar A, Khan NUH, Kureshy RI. Copper(II) Triflate Catalyzed Regioselective and Enantioselective Propargylation of Isatin Derivatives by Using Allenylboronic Acid Pinacol Ester. European J Org Chem 2018. [DOI: 10.1002/ejoc.201701745] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Naveen Gupta
- Inorganic Materials and Catalysis Division; CSIR-Central Salt and Marine Chemicals Research Institute; G. B. Marg 364 002 Bhavnagar- Gujarat, India
- Academy of Scientific and Innovative Research; CSIR-Central Salt and Marine Chemicals Research Institute; G. B. Marg 364 002 Bhavnagar Gujarat India
| | - Rajkumar Tak
- Inorganic Materials and Catalysis Division; CSIR-Central Salt and Marine Chemicals Research Institute; G. B. Marg 364 002 Bhavnagar- Gujarat, India
- Academy of Scientific and Innovative Research; CSIR-Central Salt and Marine Chemicals Research Institute; G. B. Marg 364 002 Bhavnagar Gujarat India
| | - Mohd Nazish
- Inorganic Materials and Catalysis Division; CSIR-Central Salt and Marine Chemicals Research Institute; G. B. Marg 364 002 Bhavnagar- Gujarat, India
- Academy of Scientific and Innovative Research; CSIR-Central Salt and Marine Chemicals Research Institute; G. B. Marg 364 002 Bhavnagar Gujarat India
| | - Ajay Jakhar
- Inorganic Materials and Catalysis Division; CSIR-Central Salt and Marine Chemicals Research Institute; G. B. Marg 364 002 Bhavnagar- Gujarat, India
- Academy of Scientific and Innovative Research; CSIR-Central Salt and Marine Chemicals Research Institute; G. B. Marg 364 002 Bhavnagar Gujarat India
| | - Noor-ul H. Khan
- Inorganic Materials and Catalysis Division; CSIR-Central Salt and Marine Chemicals Research Institute; G. B. Marg 364 002 Bhavnagar- Gujarat, India
- Academy of Scientific and Innovative Research; CSIR-Central Salt and Marine Chemicals Research Institute; G. B. Marg 364 002 Bhavnagar Gujarat India
| | - Rukhsana I. Kureshy
- Inorganic Materials and Catalysis Division; CSIR-Central Salt and Marine Chemicals Research Institute; G. B. Marg 364 002 Bhavnagar- Gujarat, India
- Academy of Scientific and Innovative Research; CSIR-Central Salt and Marine Chemicals Research Institute; G. B. Marg 364 002 Bhavnagar Gujarat India
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33
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Peng S, Ji D, Sun J. Gold-catalyzed [2+2+2+2]-annulation of 1,3,5-hexahydro-1,3,5-triazines with alkoxyallenes. Chem Commun (Camb) 2018; 53:12770-12773. [PMID: 29139488 DOI: 10.1039/c7cc07554e] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
An unprecedented gold-catalyzed [2+2+2+2]-annulation of 1,3,5-hexahydro-1,3,5-triazines with alkoxyallenes has been developed, providing eight-membered heterocycles in good to excellent yields. Deuterium labeling and control experiments reveal the possible reaction mechanism for this annulation.
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Affiliation(s)
- Shiyong Peng
- Jiangsu Key Laboratory of Advanced Catalytic Materials & Technology, School of Petrochemical Engineering, Changzhou University, Changzhou 213164, P. R. China.
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34
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De Munck L, Vila C, Pedro JR. Catalytic Asymmetric Reactions Involving the Seven-Membered Cyclic Imine Moieties Present in Dibenzo[b,f][1,4]oxazepines. European J Org Chem 2017. [DOI: 10.1002/ejoc.201701279] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Lode De Munck
- Departament de Química Orgànica; Facultat de Química; Universitat de València; Dr. Moliner 59 46100 Burjassot, València Spain
| | - Carlos Vila
- Departament de Química Orgànica; Facultat de Química; Universitat de València; Dr. Moliner 59 46100 Burjassot, València Spain
| | - José R. Pedro
- Departament de Química Orgànica; Facultat de Química; Universitat de València; Dr. Moliner 59 46100 Burjassot, València Spain
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35
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Molina A, Pascual-Escudero A, Adrio J, Carretero JC. Catalytic Asymmetric 1,3-Dipolar Cycloaddition/Hydroamination Sequence: Expeditious Access to Enantioenriched Pyrroloisoquinoline Derivatives. J Org Chem 2017; 82:11238-11246. [DOI: 10.1021/acs.joc.7b01927] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Affiliation(s)
- Alba Molina
- Departamento
de Química Orgánica, Facultad de Ciencias, Universidad Autónoma de Madrid, Cantoblanco, 28049 Madrid, Spain
| | - Ana Pascual-Escudero
- Departamento
de Química Orgánica, Facultad de Ciencias, Universidad Autónoma de Madrid, Cantoblanco, 28049 Madrid, Spain
| | - Javier Adrio
- Departamento
de Química Orgánica, Facultad de Ciencias, Universidad Autónoma de Madrid, Cantoblanco, 28049 Madrid, Spain
- Institute
for Advanced Research in Chemical Sciences (IAdChem), Universidad Autónoma de Madrid, 28049 Madrid, Spain
| | - Juan C. Carretero
- Departamento
de Química Orgánica, Facultad de Ciencias, Universidad Autónoma de Madrid, Cantoblanco, 28049 Madrid, Spain
- Institute
for Advanced Research in Chemical Sciences (IAdChem), Universidad Autónoma de Madrid, 28049 Madrid, Spain
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36
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Enantioselective addition of Et 2 Zn to seven‐membered cyclic imines catalyzed by a ( R )-VAPOL-Zn(II) complex. Tetrahedron Lett 2017. [DOI: 10.1016/j.tetlet.2017.07.042] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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37
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Affiliation(s)
- Guang-Jian Mei
- School of Chemistry and Material
Science, Jiangsu Normal University, Xuzhou 221116, China
| | - Feng Shi
- School of Chemistry and Material
Science, Jiangsu Normal University, Xuzhou 221116, China
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38
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Pulis AP, Yeung K, Procter DJ. Enantioselective copper catalysed, direct functionalisation of allenes via allyl copper intermediates. Chem Sci 2017; 8:5240-5247. [PMID: 28959423 PMCID: PMC5605774 DOI: 10.1039/c7sc01968h] [Citation(s) in RCA: 88] [Impact Index Per Article: 12.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2017] [Accepted: 06/01/2017] [Indexed: 11/29/2022] Open
Abstract
We explore the breadth of the copper catalysed functionalisation of allenes, which enables efficient access to enantioenriched, densely functionalised molecules.
The direct functionalisation of allenes under copper catalysis enables efficient access to enantioenriched, densely functionalised molecules. In this review we explore the breadth and depth of a versatile reaction manifold, which involves the element-cupration of allenes to generate allyl copper intermediates that are subsequently coupled with diverse arrays of electrophiles.
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Affiliation(s)
- Alexander P Pulis
- School of Chemistry , University of Manchester , Oxford Rd , Manchester , M13 9PL , UK . ;
| | - Kay Yeung
- School of Chemistry , University of Manchester , Oxford Rd , Manchester , M13 9PL , UK . ;
| | - David J Procter
- School of Chemistry , University of Manchester , Oxford Rd , Manchester , M13 9PL , UK . ;
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39
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Yang Z, Chen F, Zhang S, He Y, Yang N, Fan QH. Ruthenium-Catalyzed Enantioselective Hydrogenation of Phenanthridine Derivatives. Org Lett 2017; 19:1458-1461. [DOI: 10.1021/acs.orglett.7b00419] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Zhusheng Yang
- Key
Laboratory of Environmentally Friendly Chemistry of the Ministry of
Education, College of Chemistry, Xiangtan University, Xiangtan, Hunan 411105, P. R. China
- CAS
Key Laboratory of Molecular Recognition and Function, Institute of
Chemistry, Chinese Academy of Sciences (CAS), University of Chinese Academy of Sciences, Beijing 100190, P. R. China
| | - Fei Chen
- CAS
Key Laboratory of Molecular Recognition and Function, Institute of
Chemistry, Chinese Academy of Sciences (CAS), University of Chinese Academy of Sciences, Beijing 100190, P. R. China
| | - Shuxin Zhang
- CAS
Key Laboratory of Molecular Recognition and Function, Institute of
Chemistry, Chinese Academy of Sciences (CAS), University of Chinese Academy of Sciences, Beijing 100190, P. R. China
| | - Yanmei He
- CAS
Key Laboratory of Molecular Recognition and Function, Institute of
Chemistry, Chinese Academy of Sciences (CAS), University of Chinese Academy of Sciences, Beijing 100190, P. R. China
| | - Nianfa Yang
- Key
Laboratory of Environmentally Friendly Chemistry of the Ministry of
Education, College of Chemistry, Xiangtan University, Xiangtan, Hunan 411105, P. R. China
| | - Qing-Hua Fan
- CAS
Key Laboratory of Molecular Recognition and Function, Institute of
Chemistry, Chinese Academy of Sciences (CAS), University of Chinese Academy of Sciences, Beijing 100190, P. R. China
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40
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Smith MW, Zhou Z, Gao AX, Shimbayashi T, Snyder SA. A 7-Step Formal Asymmetric Total Synthesis of Strictamine via an Asymmetric Propargylation and Metal-Mediated Cyclization. Org Lett 2017; 19:1004-1007. [PMID: 28253628 DOI: 10.1021/acs.orglett.6b03839] [Citation(s) in RCA: 44] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Herein is shown how a novel catalytic asymmetric propargylation of 3,4-dihydro-β-carboline, followed by a designed Au(I)/Ag(I)-mediated 6-endo-dig cyclization, can directly deliver the indolenine-fused methanoquinolizidine core of the akuammiline alkaloid strictamine in its native oxidation state, ultimately achieving a 7-step formal asymmetric total synthesis. Also demonstrated are how the cyclization products can rearrange into vincorine-type skeletons and a further use for the developed propargylation with the first catalytic asymmetric total synthesis of decarbomethoxydihydrogambirtannine.
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Affiliation(s)
- Myles W Smith
- Columbia University , Dept. of Chemistry, 3000 Broadway, New York, New York 10027, United States.,The Scripps Research Institute , Dept. of Chemistry, 130 Scripps Way, Jupiter, Florida 33458, United States
| | - Zhiyao Zhou
- University of Chicago , Dept. of Chemistry, 5735 S. Ellis Avenue, Chicago, Illinois 60637, United States
| | - Alison X Gao
- The Scripps Research Institute , Dept. of Chemistry, 130 Scripps Way, Jupiter, Florida 33458, United States
| | - Takuya Shimbayashi
- University of Chicago , Dept. of Chemistry, 5735 S. Ellis Avenue, Chicago, Illinois 60637, United States
| | - Scott A Snyder
- Columbia University , Dept. of Chemistry, 3000 Broadway, New York, New York 10027, United States.,The Scripps Research Institute , Dept. of Chemistry, 130 Scripps Way, Jupiter, Florida 33458, United States.,University of Chicago , Dept. of Chemistry, 5735 S. Ellis Avenue, Chicago, Illinois 60637, United States
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41
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Alicea-Matías E, Soderquist JA. Asymmetric Propargylboration of Aldimines and Ketimines with the Borabicyclo[3.3.2]decanes: Novel Entries to Allenyl Carbinamines, Amino Acids, and Their α-Methyl Counterparts. Org Lett 2017; 19:336-339. [DOI: 10.1021/acs.orglett.6b03506] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Affiliation(s)
- Eyleen Alicea-Matías
- Department of Chemistry, University of Puerto Rico, Rio
Piedras 00931-3346, Puerto Rico
| | - John A. Soderquist
- Department of Chemistry, University of Puerto Rico, Rio
Piedras 00931-3346, Puerto Rico
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