1
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Bharadwaj KC. Chemoselective Intramolecular Morita-Baylis-Hillman Reaction; Acrylamide and Ketone as Sluggish Reacting Partners on a Labile Framework. J Org Chem 2024. [PMID: 38164748 DOI: 10.1021/acs.joc.3c02168] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2024]
Abstract
Chemoselectivity is an important issue frequently encountered while working over labile precursors. Carbonyl compounds with a heteroatom at the β carbon are sensitive precursors because they are prone to elimination under different conditions. Morita-Baylis-Hillman (MBH) reaction, although a widespread method for C-C bond formation, has its own limitations. Acrylamide and ketone are such limitations of the MBH reaction. Using them together for an intramolecular MBH (IMBH) reaction on a labile framework prone to elimination is a significant 2-fold synthetic challenge. A highly chemoselective IMBH reaction on such precursors has been established using 1,4-diazabicyclo[2.2.2]octane (DABCO) as a promoter. The protocol leads to quick access to a diversely substituted and functionalized piperidone framework in high yields. Various substitution patterns in the form of 34 successful examples have been studied. A diastereoselective version and tolerance to various functional and protecting groups are the added advantages of the developed methodology. A tertiary carbon at the β position of ketone, however, led to complete reversal of selectivity and gave only the elimination product. Control experiments toward a better understanding of the substitution pattern, role of catalyst, and mechanistic study have been carried out. As an application of the IMBH adduct, a one-step allylic rearrangement for the dihydropyridone framework has also been demonstrated.
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2
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Llor N, Peršolja P, Calbó A, Ordeix S, Ramírez N, Bosch J, Amat M. Chiral Aminoalcohol-Derived δ-Lactams Provide Easy Access to Piperidines and Acyclic Five-Carbon Building Blocks Bearing a Tertiary and a Quaternary Stereocenter. ACS OMEGA 2023; 8:34650-34662. [PMID: 37779970 PMCID: PMC10536026 DOI: 10.1021/acsomega.3c03580] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/22/2023] [Accepted: 07/10/2023] [Indexed: 10/03/2023]
Abstract
A procedure for the synthesis of enantiopure piperidines and acyclic building blocks (5-aminopentanols, O-protected 5-hydroxypentanenitriles) containing a tertiary and a quaternary stereocenter has been developed. Starting from a phenylglycinol- or aminoindanol-derived δ-lactam bearing an alkyl substituent at the α-position of the N,O-acetal carbon, easily accessible by a cyclocondensation reaction, the stereoselective dialkylation at the carbonyl α-position generates the quaternary stereocenter and the subsequent two-step reductive removal of the chiral inductor provides enantiopure 3,3,5-trisubstituted piperidines. Alternatively, the simultaneous reductive opening of the oxazolidine and piperidone rings of the dialkylated lactams followed by reductive or oxidative cleavage of the chiral inductor opens access to chiral 2,2,4-trisubstituted 5-amino-1-pentanols or 2,4,4-trisubstituted 5-hydroxypentanenitriles.
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Affiliation(s)
- Núria Llor
- Laboratory
of Organic Chemistry, Faculty of Pharmacy and Food Sciences, and Institute
of Biomedicine (IBUB), University of Barcelona, Barcelona 08028, Spain
| | - Peter Peršolja
- Laboratory
of Organic Chemistry, Faculty of Pharmacy and Food Sciences, University of Barcelona, Barcelona 08028, Spain
| | - Arnau Calbó
- Laboratory
of Organic Chemistry, Faculty of Pharmacy and Food Sciences, University of Barcelona, Barcelona 08028, Spain
| | - Sergi Ordeix
- Laboratory
of Organic Chemistry, Faculty of Pharmacy and Food Sciences, University of Barcelona, Barcelona 08028, Spain
| | - Nicolás Ramírez
- Laboratory
of Organic Chemistry, Faculty of Pharmacy and Food Sciences, University of Barcelona, Barcelona 08028, Spain
| | - Joan Bosch
- Laboratory
of Organic Chemistry, Faculty of Pharmacy and Food Sciences, and Institute
of Biomedicine (IBUB), University of Barcelona, Barcelona 08028, Spain
| | - Mercedes Amat
- Laboratory
of Organic Chemistry, Faculty of Pharmacy and Food Sciences, and Institute
of Biomedicine (IBUB), University of Barcelona, Barcelona 08028, Spain
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3
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Xu Z, Li X, Rose JA, Herzon SB. Finding activity through rigidity: syntheses of natural products containing tricyclic bridgehead carbon centers. Nat Prod Rep 2023; 40:1393-1431. [PMID: 37140079 PMCID: PMC10472132 DOI: 10.1039/d3np00008g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/05/2023]
Abstract
Covering: up to 2022Tricyclic bridgehead carbon centers (TBCCs) are a synthetically challenging substructure found in many complex natural products. Here we review the syntheses of ten representative families of TBCC-containing isolates, with the goal of outlining the strategies and tactics used to install these centers, including a discussion of the evolution of the successful synthetic design. We provide a summary of common strategies to inform future synthetic endeavors.
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Affiliation(s)
- Zhi Xu
- Department of Chemistry, Yale University, New Haven, Connecticut, 06520, USA.
| | - Xin Li
- Department of Chemistry, Yale University, New Haven, Connecticut, 06520, USA.
| | - John A Rose
- Department of Chemistry, Yale University, New Haven, Connecticut, 06520, USA.
| | - Seth B Herzon
- Department of Chemistry, Yale University, New Haven, Connecticut, 06520, USA.
- Departments of Pharmacology and Therapeutic Radiology, Yale School of Medicine, New Haven, Connecticut, 06520, USA
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4
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Kim S, Song SL, Zhang J, Kim D, Hong S, Chang S. Regio- and Enantioselective Catalytic δ-C-H Amidation of Dioxazolones Enabled by Open-Shell Copper-Nitrenoid Transfer. J Am Chem Soc 2023; 145:16238-16248. [PMID: 37462685 DOI: 10.1021/jacs.3c05258] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/27/2023]
Abstract
Controlling regio- and enantioselectivity in C-H functionalization reactions is of paramount importance due to their versatile synthetic utilities. Herein, we describe a new approach for the asymmetric δ-C(sp3)-H amidation catalysis of dioxazolones using a Cu(I) precursor with a chiral bisoxazoline ligand to access six-membered lactams with high to excellent regio- and enantioselectivity (up to >19:1 rr and >99:1 er). Combined experimental and computational mechanistic studies unveiled that the open-shell character of the postulated Cu-nitrenoids enables the regioselective hydrogen atom abstraction and subsequent enantio-determining radical rebound of the resulting carbon radical intermediates. The synthetic utility of this asymmetric cyclization was demonstrated in the diastereoselective introduction of additional functional groups into the chiral δ-lactam skeleton as well as in the rapid access to biorelevant azacyclic compounds.
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Affiliation(s)
- Suhyeon Kim
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, South Korea
- Center for Catalytic Hydrocarbon Functionalizations, Institute for Basic Science (IBS), Daejeon 34141, South Korea
| | - Se Lin Song
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, South Korea
- Center for Catalytic Hydrocarbon Functionalizations, Institute for Basic Science (IBS), Daejeon 34141, South Korea
| | - Jianbo Zhang
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, South Korea
- Center for Catalytic Hydrocarbon Functionalizations, Institute for Basic Science (IBS), Daejeon 34141, South Korea
| | - Dongwook Kim
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, South Korea
- Center for Catalytic Hydrocarbon Functionalizations, Institute for Basic Science (IBS), Daejeon 34141, South Korea
| | - Sungwoo Hong
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, South Korea
- Center for Catalytic Hydrocarbon Functionalizations, Institute for Basic Science (IBS), Daejeon 34141, South Korea
| | - Sukbok Chang
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, South Korea
- Center for Catalytic Hydrocarbon Functionalizations, Institute for Basic Science (IBS), Daejeon 34141, South Korea
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5
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Shahedi M, Omidi N, Habibi Z, Yousefi M, Brask J, Notash B, Mohammadi M. Biocatalytic stereoselective synthesis of pyrrolidine-2,3-diones containing all-carbon quaternary stereocenters. Org Biomol Chem 2023; 21:2742-2747. [PMID: 36916669 DOI: 10.1039/d2ob02294j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/11/2023]
Abstract
Highly functionalized pyrrolidine-2,3-diones can be synthesized efficiently and stereoselectively under mild conditions using a biocatalytic approach. The reaction led to the formation of new all-carbon quaternary stereocenters from Myceliophthora thermophila laccase (Novozym 51003) catalyzed oxidation of catechols to ortho-quinones and subsequent 1,4-addition with 3-hydroxy-1,5-dihydro-2H-pyrrol-2-ones. The reaction was conducted with various substituents on both reactants, resulting in 13 products in moderate to good yields (42-91%). The same 15 reactions were also tested with K3Fe(CN)6 as a catalyst, but here only one reaction resulted in a product (60% yield).
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Affiliation(s)
- Mansour Shahedi
- Department of Organic Chemistry, Shahid Beheshti University, 1983969411 Tehran, Iran.
| | - Niloofar Omidi
- Department of Organic Chemistry, Shahid Beheshti University, 1983969411 Tehran, Iran.
| | - Zohreh Habibi
- Department of Organic Chemistry, Shahid Beheshti University, 1983969411 Tehran, Iran.
| | - Maryam Yousefi
- Nanobiotechnology Research Center, Avicenna Research Institute, ACECR, Tehran, Iran.
| | - Jesper Brask
- Novozymes A/S, Krogshøjvej 36, 2880 Bagsværd, Copenhagen, Denmark
| | - Behrouz Notash
- Department of Inorganic Chemistry, Shahid Beheshti University, 1983969411 Tehran, Iran
| | - Mehdi Mohammadi
- Bioprocess Engineering Department, Institute of Industrial and Environmental Biotechnology, National Institute of Genetic Engineering and Biotechnology (NIGEB), Tehran, Iran
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6
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Wu X, Turlik A, Luan B, He F, Qu J, Houk KN, Chen Y. Nickel-Catalyzed Enantioselective Reductive Alkyl-Carbamoylation of Internal Alkenes. Angew Chem Int Ed Engl 2022; 61:e202207536. [PMID: 35818326 PMCID: PMC9427719 DOI: 10.1002/anie.202207536] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2022] [Indexed: 12/16/2022]
Abstract
Herein, we leverage the Ni-catalyzed enantioselective reductive dicarbofunctionalization of internal alkenes with alkyl iodides to enable the synthesis of chiral pyrrolidinones bearing vicinal stereogenic centers. The application of newly developed 1-Nap Quinim is critical for formation of two contiguous stereocenters in high yield, enantioselectivity, and diastereoselectivity. This catalytic system also improves both the yield and enantioselectivity in the synthesis of α,α-dialkylated γ-lactams. Computational studies reveal that the enantiodetermining step proceeds with a carbamoyl-NiI intermediate that is reduced by the Mn reductant prior to intramolecular migratory insertion. The presence of the t-butyl group of the Quinim ligand leads to an unfavorable distortion of the substrate in the TS that leads to the minor enantiomer. Calculations also support an improvement in enantioselectivity with 1-Nap Quinim compared to p-tol Quinim.
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Affiliation(s)
- Xianqing Wu
- Key Laboratory for Advanced Materials and Joint International Research Laboratory of Precision Chemistry and Molecular Engineering, Feringa Nobel Prize Scientist Joint Research Center, Frontiers Science Center for Materiobiology and Dynamic Chemistry, School of Chemistry and Molecular Engineering, East China University of Science & Technology, Shanghai, 200237, China
| | - Aneta Turlik
- Department of Chemistry and Biochemistry, University of California, Los Angeles
| | - Baixue Luan
- Key Laboratory for Advanced Materials and Joint International Research Laboratory of Precision Chemistry and Molecular Engineering, Feringa Nobel Prize Scientist Joint Research Center, Frontiers Science Center for Materiobiology and Dynamic Chemistry, School of Chemistry and Molecular Engineering, East China University of Science & Technology, Shanghai, 200237, China
| | - Feng He
- Key Laboratory for Advanced Materials and Joint International Research Laboratory of Precision Chemistry and Molecular Engineering, Feringa Nobel Prize Scientist Joint Research Center, Frontiers Science Center for Materiobiology and Dynamic Chemistry, School of Chemistry and Molecular Engineering, East China University of Science & Technology, Shanghai, 200237, China
| | - Jingping Qu
- Key Laboratory for Advanced Materials and Joint International Research Laboratory of Precision Chemistry and Molecular Engineering, Feringa Nobel Prize Scientist Joint Research Center, Frontiers Science Center for Materiobiology and Dynamic Chemistry, School of Chemistry and Molecular Engineering, East China University of Science & Technology, Shanghai, 200237, China
| | - K. N. Houk
- Department of Chemistry and Biochemistry, University of California, Los Angeles
| | - Yifeng Chen
- Key Laboratory for Advanced Materials and Joint International Research Laboratory of Precision Chemistry and Molecular Engineering, Feringa Nobel Prize Scientist Joint Research Center, Frontiers Science Center for Materiobiology and Dynamic Chemistry, School of Chemistry and Molecular Engineering, East China University of Science & Technology, Shanghai, 200237, China
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7
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Wu X, Turlik A, Luan B, He F, Qu J, Houk KN, Chen Y. Nickel‐Catalyzed Enantioselective Reductive Alkyl‐Carbamoylation of Internal Alkenes. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202207536] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Xianqing Wu
- East China University of Science and Technology school of chemistry and molecular engeering CHINA
| | - Aneta Turlik
- UCLA: University of California Los Angeles Department of Chemistry and Biochemistry UNITED STATES
| | - Baixue Luan
- East China University of Science and Technology school of chemistry and molecular engineering CHINA
| | - Feng He
- East China University of Science and Technology school of chemistry and molecular engeering CHINA
| | - Jingping Qu
- East China University of Science and Technology school of chemistry and molecular engineering CHINA
| | - Kendall N. Houk
- University of California, Los Angeles 607 Charles E Young Drive East 90095 Los Angeles UNITED STATES
| | - Yifeng Chen
- East China University of Science and Technology School of Chemistry and Molecular Engineering 130 Meilong Road 200237 Shanghai CHINA
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8
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Mudráková B, Kisszékelyi P, Vargová D, Zakiewicz D, Šebesta R. Asymmetric Tandem Conjugate Addition and Reaction with Carbocations on Unsaturated Heterocycles. Adv Synth Catal 2022. [DOI: 10.1002/adsc.202101485] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Brigita Mudráková
- Comenius University in Bratislava Faculty of Natural Sciences Department of Organic Chemistry, Mlynská dolina Ilkovičova 6 842 15 Bratislava Slovakia
| | - Péter Kisszékelyi
- Comenius University in Bratislava Faculty of Natural Sciences Department of Organic Chemistry, Mlynská dolina Ilkovičova 6 842 15 Bratislava Slovakia
| | - Denisa Vargová
- Comenius University in Bratislava Faculty of Natural Sciences Department of Organic Chemistry, Mlynská dolina Ilkovičova 6 842 15 Bratislava Slovakia
| | - Dorota Zakiewicz
- Comenius University in Bratislava Faculty of Natural Sciences Department of Organic Chemistry, Mlynská dolina Ilkovičova 6 842 15 Bratislava Slovakia
| | - Radovan Šebesta
- Comenius University in Bratislava Faculty of Natural Sciences Department of Organic Chemistry, Mlynská dolina Ilkovičova 6 842 15 Bratislava Slovakia
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9
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Yu X, Zhang T, Liu J, Li X. Recent Advances in the Construction of Quaternary Stereocenters via Palladium-Catalyzed Decarboxylative Asymmetric Allylic Alkylation. SYNTHESIS-STUTTGART 2021. [DOI: 10.1055/a-1533-3085] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
AbstractPalladium-catalyzed decarboxylative asymmetric allylic alkylation (DAAA) provides an efficient and powerful strategy to construct quaternary stereocenters, which are widely present in biologically active natural products and approved drugs. In this short review, we summarize recent developments (since 2018) in the facile synthesis of quaternary stereocenters via DAAA methods. Several representative examples of the use of DAAA strategies for the total synthesis of complex natural products further demonstrate its synthetic potential in the realm of organic and medicinal chemistry.1 Introduction2 Construction of Quaternary Stereocenters via Palladium Catalyzed DAAA3 Construction of Quaternary Stereocenters via Pd-Catalyzed Interceptive DAAA4 Application of DAAA in Natural Product Synthesis5 Conclusion
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Affiliation(s)
- Xinhui Yu
- Department of Medicinal Chemistry, Key Laboratory of Chemical Biology (Ministry of Education), School of Pharmaceutical Sciences, Cheeloo College of Medicine, Shandong University
| | - Ting Zhang
- Department of Medicinal Chemistry, Key Laboratory of Chemical Biology (Ministry of Education), School of Pharmaceutical Sciences, Cheeloo College of Medicine, Shandong University
| | - Jitian Liu
- Department of Medicinal Chemistry, Key Laboratory of Chemical Biology (Ministry of Education), School of Pharmaceutical Sciences, Cheeloo College of Medicine, Shandong University
| | - Xiaoxun Li
- Department of Medicinal Chemistry, Key Laboratory of Chemical Biology (Ministry of Education), School of Pharmaceutical Sciences, Cheeloo College of Medicine, Shandong University
- Suzhou Institute of Shandong University
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10
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Flores O, Wagner P, Suffert J. Cyclocarbopalladation/Stille Cascade: Stereoselective Access to Quaternary Functionalized Carbons. Org Lett 2021; 23:6568-6572. [PMID: 34375102 DOI: 10.1021/acs.orglett.1c02400] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Exploration of the 4-exo-dig cyclocarbopalladation in the discovery of new and original scaffolds afforded some unexpected results. The search for a way to produce seven-membered ring systems led to polycyclic molecules bearing a tetrasubstituted carbon. The triple bond that substitutes the cyclohexene ring on the starting compound is crucial for a high stereoselectivity. This observation has been confirmed by the reaction of a nonsubstituted cyclohexene ring resulting in poor stereoselectivity and low yields.
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Affiliation(s)
- Océane Flores
- Laboratoire d'Innovation Thérapeutique, Université de Strasbourg, CNRS, UMR 7200, 67000 Strasbourg, France
| | - Patrick Wagner
- Laboratoire d'Innovation Thérapeutique, Université de Strasbourg, CNRS, UMR 7200, 67000 Strasbourg, France
| | - Jean Suffert
- Laboratoire d'Innovation Thérapeutique, Université de Strasbourg, CNRS, UMR 7200, 67000 Strasbourg, France
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11
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Feng Z, Li Q, Chen L, Yao H, Lin A. Palladium-catalyzed asymmetric carbamoyl-carbonylation of alkenes. Sci China Chem 2021. [DOI: 10.1007/s11426-021-9992-2] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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12
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Sun B, Shi X, Zhuang X, Huang P, Shi R, Zhu R, Jin C. Photoinduced EDA Complexes Enabled Radical Tandem Cyclization/Arylation of Unactivated Alkene with 2-Amino-1,4-naphthoquinones. Org Lett 2021; 23:1862-1867. [DOI: 10.1021/acs.orglett.1c00268] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Affiliation(s)
- Bin Sun
- Collaborative Innovation Center of Yangtze River Delta Region Green Pharmaceuticals, Zhejiang University of Technology, Hangzhou 310014, P. R. China
| | - Xiayue Shi
- College of Pharmaceutical Sciences, Zhejiang University of Technology, Hangzhou 310014, P. R. China
| | - Xiaohui Zhuang
- Collaborative Innovation Center of Yangtze River Delta Region Green Pharmaceuticals, Zhejiang University of Technology, Hangzhou 310014, P. R. China
| | - Panyi Huang
- College of Pharmaceutical Sciences, Zhejiang University of Technology, Hangzhou 310014, P. R. China
| | - Rongcheng Shi
- College of Pharmaceutical Sciences, Zhejiang University of Technology, Hangzhou 310014, P. R. China
| | - Rui Zhu
- College of Pharmaceutical Sciences, Zhejiang University of Technology, Hangzhou 310014, P. R. China
| | - Can Jin
- Collaborative Innovation Center of Yangtze River Delta Region Green Pharmaceuticals, Zhejiang University of Technology, Hangzhou 310014, P. R. China
- College of Pharmaceutical Sciences, Zhejiang University of Technology, Hangzhou 310014, P. R. China
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13
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Wang Z, Yang ZP, Fu GC. Quaternary stereocentres via catalytic enantioconvergent nucleophilic substitution reactions of tertiary alkyl halides. Nat Chem 2021; 13:236-242. [PMID: 33432109 PMCID: PMC7925339 DOI: 10.1038/s41557-020-00609-7] [Citation(s) in RCA: 49] [Impact Index Per Article: 16.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2020] [Accepted: 11/18/2020] [Indexed: 11/25/2022]
Abstract
The development of efficient methods, particularly catalytic and enantioselective processes, for the construction of all-carbon quaternary stereocentres is an important (and difficult) challenge in organic synthesis, due to the occurrence of this motif in a range of bioactive molecules. One conceptually straightforward and potentially versatile approach is the catalytic enantioconvergent substitution reaction of a readily available racemic tertiary alkyl electrophile by an organometallic nucleophile; however, examples of such processes are rare. In this report, we demonstrate that a nickel-based chiral catalyst achieves enantioconvergent couplings of a variety of tertiary electrophiles (cyclic and acyclic α-halocarbonyl compounds) with alkenylmetal nucleophiles to form quaternary stereocentres with good yield and enantioselectivity under mild conditions in the presence of a range of functional groups. These couplings, which likely proceed via a radical pathway, provide access to an array of useful families of organic compounds, including intermediates in the total synthesis of two natural products, (−)-eburnamonine and madindoline A.
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Affiliation(s)
- Zhaobin Wang
- Division of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena, CA, USA
| | - Ze-Peng Yang
- Division of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena, CA, USA
| | - Gregory C Fu
- Division of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena, CA, USA.
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14
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Generation of acyclic chiral building blocks containing a quaternary stereocenter. Formal synthesis of alkaloids of the leuconolam-leuconoxine-mersicarpine group. Tetrahedron 2020. [DOI: 10.1016/j.tet.2020.131017] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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15
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Wu X, Qu J, Chen Y. Quinim: A New Ligand Scaffold Enables Nickel-Catalyzed Enantioselective Synthesis of α-Alkylated γ-Lactam. J Am Chem Soc 2020; 142:15654-15660. [DOI: 10.1021/jacs.0c07126] [Citation(s) in RCA: 47] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- Xianqing Wu
- Key Laboratory for Advanced Materials and Joint International Research Laboratory of Precision Chemistry and Molecular Engineering, Feringa Nobel Prize Scientist Joint Research Center, Frontiers Science Center for Materiobiology and Dynamic Chemistry, School of Chemistry and Molecular Engineering, East China University of Science & Technology, 130 Meilong Road, Shanghai 200237, China
| | - Jingping Qu
- Key Laboratory for Advanced Materials and Joint International Research Laboratory of Precision Chemistry and Molecular Engineering, Feringa Nobel Prize Scientist Joint Research Center, Frontiers Science Center for Materiobiology and Dynamic Chemistry, School of Chemistry and Molecular Engineering, East China University of Science & Technology, 130 Meilong Road, Shanghai 200237, China
| | - Yifeng Chen
- Key Laboratory for Advanced Materials and Joint International Research Laboratory of Precision Chemistry and Molecular Engineering, Feringa Nobel Prize Scientist Joint Research Center, Frontiers Science Center for Materiobiology and Dynamic Chemistry, School of Chemistry and Molecular Engineering, East China University of Science & Technology, 130 Meilong Road, Shanghai 200237, China
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16
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An X, Du J, Jia Z, Zhang Q, Yu K, Zhang Y, Zhao X, Fang R, Fan C. Asymmetric Catalytic [4+5] Annulation of
ortho
‐Quinone Methides with Vinylethylene Carbonates and its Extension to Stereoselective Tandem Rearrangement. Chemistry 2020; 26:3803-3809. [DOI: 10.1002/chem.201904903] [Citation(s) in RCA: 32] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2019] [Indexed: 12/21/2022]
Affiliation(s)
- Xian‐Tao An
- State Key Laboratory of Applied Organic ChemistryCollege of Chemistry and Chemical EngineeringLanzhou University 222 Tianshui Nanlu Lanzhou 730000 China
| | - Ji‐Yuan Du
- College of Chemistry and Chemical EngineeringLiaocheng University 1 Hunan Road Liaocheng 252059 China
| | - Zhi‐Long Jia
- State Key Laboratory of Applied Organic ChemistryCollege of Chemistry and Chemical EngineeringLanzhou University 222 Tianshui Nanlu Lanzhou 730000 China
| | - Qing Zhang
- State Key Laboratory of Applied Organic ChemistryCollege of Chemistry and Chemical EngineeringLanzhou University 222 Tianshui Nanlu Lanzhou 730000 China
| | - Ke‐Yin Yu
- State Key Laboratory of Applied Organic ChemistryCollege of Chemistry and Chemical EngineeringLanzhou University 222 Tianshui Nanlu Lanzhou 730000 China
| | - Yi‐Zhou Zhang
- State Key Laboratory of Applied Organic ChemistryCollege of Chemistry and Chemical EngineeringLanzhou University 222 Tianshui Nanlu Lanzhou 730000 China
| | - Xian‐He Zhao
- State Key Laboratory of Applied Organic ChemistryCollege of Chemistry and Chemical EngineeringLanzhou University 222 Tianshui Nanlu Lanzhou 730000 China
| | - Ran Fang
- State Key Laboratory of Applied Organic ChemistryCollege of Chemistry and Chemical EngineeringLanzhou University 222 Tianshui Nanlu Lanzhou 730000 China
| | - Chun‐An Fan
- State Key Laboratory of Applied Organic ChemistryCollege of Chemistry and Chemical EngineeringLanzhou University 222 Tianshui Nanlu Lanzhou 730000 China
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17
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Zhu G, Ma L, Zhang K, Zhou Z, Song H, Yi W. Cascade Reductive Rearrangement for the Stereoselective Synthesis of Multifunctional Piperidinones: A Combined Experimental and Computational Study. ChemistrySelect 2020. [DOI: 10.1002/slct.201904106] [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)
- Guoxun Zhu
- School of Chemical Engineering and TechnologySun Yat-sen University 135 Xin Gang West Road Guangzhou 510275 P.R. China
| | - Lei Ma
- Key Laboratory of Molecular Target and Clinical Pharmacology & the State Key Laboratory of Respiratory DiseaseSchool of Pharmaceutical Sciences & the Fifth Affiliated Hospital, Guangzhou Medical University Guangzhou, Guangdong 511436 P. R. China
| | - Kaixin Zhang
- School of Chemical Engineering and TechnologySun Yat-sen University 135 Xin Gang West Road Guangzhou 510275 P.R. China
| | - Zhi Zhou
- Key Laboratory of Molecular Target and Clinical Pharmacology & the State Key Laboratory of Respiratory DiseaseSchool of Pharmaceutical Sciences & the Fifth Affiliated Hospital, Guangzhou Medical University Guangzhou, Guangdong 511436 P. R. China
| | - Huacan Song
- School of Chemical Engineering and TechnologySun Yat-sen University 135 Xin Gang West Road Guangzhou 510275 P.R. China
| | - Wei Yi
- School of Chemical Engineering and TechnologySun Yat-sen University 135 Xin Gang West Road Guangzhou 510275 P.R. China
- Key Laboratory of Molecular Target and Clinical Pharmacology & the State Key Laboratory of Respiratory DiseaseSchool of Pharmaceutical Sciences & the Fifth Affiliated Hospital, Guangzhou Medical University Guangzhou, Guangdong 511436 P. R. China
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18
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Wei L, Chen L, Le Bideau F, Retailleau P, Dumas F. Straightforward access to densely substituted chiral succinimides through enantioselective organocatalyzed Michael addition of α-alkyl-cyclic ketones to maleimides. Org Chem Front 2020. [DOI: 10.1039/c9qo01463b] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A simple, cheap and unchanged organocatalytic system provides efficient access to densely substituted chiral succinimides bearing QCC–TCC vicinal stereocenters from unreactive α-alkyl cyclic ketones and maleimides.
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Affiliation(s)
- Lai Wei
- UMR CNRS 8076 BioCIS
- Conception et Synthèse de Molécules d'Intérêt Thérapeutique (CoSMIT)
- CNRS-Université Paris Sud
- Université Paris-Saclay
- Faculté de Pharmacie
| | - Li Chen
- UMR CNRS 8076 BioCIS
- Conception et Synthèse de Molécules d'Intérêt Thérapeutique (CoSMIT)
- CNRS-Université Paris Sud
- Université Paris-Saclay
- Faculté de Pharmacie
| | - Franck Le Bideau
- UMR CNRS 8076 BioCIS
- Conception et Synthèse de Molécules d'Intérêt Thérapeutique (CoSMIT)
- CNRS-Université Paris Sud
- Université Paris-Saclay
- Faculté de Pharmacie
| | - Pascal Retailleau
- UPR 2301
- Institut de Chimie des Substances Naturelles
- CNRS
- Gif sur Yvette F-91198
- France
| | - Françoise Dumas
- UMR CNRS 8076 BioCIS
- Conception et Synthèse de Molécules d'Intérêt Thérapeutique (CoSMIT)
- CNRS-Université Paris Sud
- Université Paris-Saclay
- Faculté de Pharmacie
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19
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Herndon JW. The chemistry of the carbon-transition metal double and triple bond: Annual survey covering the year 2018. Coord Chem Rev 2019. [DOI: 10.1016/j.ccr.2019.213051] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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20
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Min XL, Xu XR, He Y. Axial-to-Central Chirality Transfer for Construction of Quaternary Stereocenters via Dearomatization of BINOLs. Org Lett 2019; 21:9188-9193. [PMID: 31664848 DOI: 10.1021/acs.orglett.9b03558] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
All-carbon quaternary stereocenters are versatile building blocks, and their asymmetric construction has attracted much attention. Herein, we disclose an axial-to-central chirality transfer strategy for the synthesis of chiral quaternary stereocenters via dearomatization of (S)-BINOLs. The reaction proceeded smoothly with a wide range of propargyl carbonates to afford chiral spiro-compounds in high yields with excellent enantioselectivities. In addition, the strategy was extended to kinetic resolution of rac-BINOLs albeit with moderate s value.
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Affiliation(s)
- Xiao-Long Min
- School of Chemical Engineering , Nanjing University of Science & Technology , Nanjing 210094 , China
| | - Xu-Ran Xu
- School of Chemical Engineering , Nanjing University of Science & Technology , Nanjing 210094 , China
| | - Ying He
- School of Chemical Engineering , Nanjing University of Science & Technology , Nanjing 210094 , China
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21
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Makolo F, Viljoen A, Veale CGL. Mesembrine: The archetypal psycho-active Sceletium alkaloid. PHYTOCHEMISTRY 2019; 166:112061. [PMID: 31299396 DOI: 10.1016/j.phytochem.2019.112061] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/22/2019] [Revised: 06/06/2019] [Accepted: 06/30/2019] [Indexed: 06/10/2023]
Abstract
(-)-Mesembrine is a chiral alkaloid that features an aryloctahydroindole skeleton and is most commonly found in species of the succulent genus Sceletium. Several Sceletium species are used by various ethnic groups in South Africa to manage disorders of the central nervous system. Binding assays have revealed that mesembrine is a more potent inhibitor of the serotonin transporter (SERT) than fluoxetine (Prozac) which has prompted the commercialization of mesembrine-containing consumer products. The congested all carbon quaternary stereocenter present at the bridgehead of mesembrine has rendered it a compound of interest for research in synthetic chemistry, which has assisted in the absolute configuration of the naturally occurring isomer to be assigned. Accordingly, this review will cover the recent literature pertaining to the distribution, structural elucidation, chemotaxonomy, biosynthesis, organic synthesis, as well as the biological activities of (-)-mesembrine. Recent synthetic procedures of the non-natural enantiomer as well as the racemate are also considered.
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Affiliation(s)
- Felix Makolo
- Department of Pharmaceutical Sciences, Faculty of Science, Tshwane University of Technology, Private Bag X680, Pretoria, 0001, South Africa
| | - Alvaro Viljoen
- Department of Pharmaceutical Sciences, Faculty of Science, Tshwane University of Technology, Private Bag X680, Pretoria, 0001, South Africa; SAMRC Herbal Drugs Research Unit, Faculty of Science, Tshwane University of Technology, Private Bag X680, Pretoria, 0001, South Africa
| | - Clinton G L Veale
- School of Chemistry and Physics, Pietermaritzburg Campus, University of KwaZulu-Natal, Private Bag X01, Scottsville, 3209, South Africa.
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