1
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Li L, Yang S, Xu Z, Li S, Jiang J, Zhang YQ. Dinuclear Titanium(III)-Catalyzed Radical-Type Kinetic Resolution of Epoxides for the Enantioselective Synthesis of cis-Glycidic Esters. J Am Chem Soc 2024; 146:13546-13557. [PMID: 38690842 DOI: 10.1021/jacs.4c03346] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/03/2024]
Abstract
Glycidic esters represent pivotal constituents in synthetic chemistry, offering enhanced versatility for tailoring toward a diverse array of molecular targets in comparison with simple epoxides. While considerable progress has been made in the asymmetric synthesis of trans- and trisubstituted glycidic esters, achieving enantioselective preparation of cis-glycidic esters has remained a long-standing challenge. Here, we demonstrate a selectivity-predictable modular platform for the asymmetric synthesis of cis-glycidic esters via a novel dinuclear (salen)titanium(III)-catalyzed radical-type kinetic resolution (KR) approach. This radical KR protocol operates under mild conditions and demonstrates a wide substrate scope, facilitating the synthesis of alkyl- and aryl-substituted cis-glycidic esters with high levels of regioselectivity and enantioselectivity, along with hydroxy ester byproducts representing synthetically valuable motifs as well. This study presents a unique exploration of radical-type KR applied to epoxides, effectively overcoming the steric challenges inherent in conventional nucleophilic-type methodologies typically employed in epoxide chemistry.
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Affiliation(s)
- Longfei Li
- School of Chemistry and Chemical Engineering, Shandong University, Jinan 250100, P. R. China
| | - Shuo Yang
- School of Chemistry and Chemical Engineering, Shandong University, Jinan 250100, P. R. China
| | - Zhongyun Xu
- School of Chemistry and Chemical Engineering, Shandong University, Jinan 250100, P. R. China
| | - Shengxiao Li
- School of Chemistry and Chemical Engineering, Shandong University, Jinan 250100, P. R. China
| | - Jie Jiang
- School of Chemistry and Chemical Engineering, Shandong University, Jinan 250100, P. R. China
| | - Yong-Qiang Zhang
- School of Chemistry and Chemical Engineering, Shandong University, Jinan 250100, P. R. China
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2
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Qin C, Koengeter T, Zhao F, Mu Y, Liu F, Houk KN, Hoveyda AH. Z-Trisubstituted α,β-Unsaturated Esters and Acid Fluorides through Stereocontrolled Catalytic Cross-Metathesis. J Am Chem Soc 2023; 145:3748-3762. [PMID: 36720176 PMCID: PMC10075318 DOI: 10.1021/jacs.2c13245] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
Catalytic cross-metathesis (CM) reactions that can generate trisubstituted alkenes in high stereoisomeric purity are important but remain limited in scope. Here, CM reactions are introduced that generate Z-trisubstituted α-methyl, α,β-unsaturated, alkyl and aryl esters, thiol esters, and acid fluorides. Transformations are promoted by a Mo bis-aryloxide, a monoaryloxide pyrrolide, or a monoaryloxide chloride complex; air-stable and commercially available paraffin tablets containing a Mo complex may also be used. Alkyl, aryl, and silyl carboxylic esters as well as thiol esters and acid fluoride reagents are either purchasable or can be prepared in one step. Products were obtained in 55-95% yield and in 88:12->98:2 Z/E ratio (typically >95:5). The applicability of the approach is highlighted by a two-step conversion of citronellol to an isomintlactone precursor (1.7 g, 73% yield, and 97:3 Z/E) and a single-step transformation of lanosterol acetate to 3-epi-anwuweizic acid (72% yield and 94:6 Z/E). Included are the outcomes of DFT studies, regarding several initially puzzling catalyst activity trends, providing the following information: (1) it is key that a disubstituted Mo alkylidene, generated by a competing homo-metathesis (HM) pathway, can re-enter the productive CM cycle. (2) Whereas in a CM cycle the formation of a molybdacyclobutane is likely turnover-limiting, the collapse of related metallacycles in a HM cycle is probably rate-determining. It is therefore the relative energy barrier required for these steps that determines whether CM or HM is dominant with a particular complex.
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Affiliation(s)
- Can Qin
- Department of Chemistry, Merkert Chemistry Center, Boston College, Chestnut Hill, Massachusetts 02467, USA
- Supramolecular Science and Engineering Institute, University of Strasbourg, CNRS, 67000 Strasbourg, France
| | - Tobias Koengeter
- Department of Chemistry, Merkert Chemistry Center, Boston College, Chestnut Hill, Massachusetts 02467, USA
| | - Fengyue Zhao
- College of Sciences, Nanjing Agricultural University, Nanjing 210095, China
| | - Yucheng Mu
- Department of Chemistry, Merkert Chemistry Center, Boston College, Chestnut Hill, Massachusetts 02467, USA
| | - Fang Liu
- College of Sciences, Nanjing Agricultural University, Nanjing 210095, China
| | - K. N. Houk
- Department of Chemistry and Biochemistry, University of California, Los Angeles, California 90095, USA
| | - Amir H. Hoveyda
- Department of Chemistry, Merkert Chemistry Center, Boston College, Chestnut Hill, Massachusetts 02467, USA
- Supramolecular Science and Engineering Institute, University of Strasbourg, CNRS, 67000 Strasbourg, France
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3
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Kang G, Park S, Han S. Synthesis of High-Order and High-Oxidation State Securinega Alkaloids. Acc Chem Res 2023; 56:140-156. [PMID: 36594722 DOI: 10.1021/acs.accounts.2c00719] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
Securinega alkaloids, composed of more than 100 members characterized by the compact tetracyclic scaffold, have fascinated the synthetic community with their structural diversity and notable bioactivities. On the basis of the structural phenotype, oligomerizations and oxidations are major biosynthetic diversification modes of the basic Securinega framework. Despite the rich history of synthesis of basic monomeric Securinega alkaloids, the synthesis of oligomeric Securinega alkaloids, as well as oxidized derivatives, has remained relatively unexplored because of their extra structural complexity. In the first half of this Account, our synthetic studies toward high-order Securinega alkaloids are described. We aimed to establish a reliable synthetic method to form C14-C15' and C12-C15' bonds, which are prevalent connection modes between monomers. During our total synthesis of flueggenine C (9), we have invented an accelerated Rauhut-Currier reaction capable of forming the C14-C15' bond stereoselectively. Installation of the nucleophilic functionality to the Michael acceptor, which ushers the C-C bond forming conjugate addition to follow the intramolecular pathway, was the key to success. The C12-C15' linkage, which was inaccessible via an accelerated Rauhut-Currier reaction, was established by devising a complementary cross-coupling/conjugate reduction-based dimerization strategy that enabled the total synthesis of flueggenines D (11) and I (14). In this approach, the C12-C15' linkage was established via a Stille cross-coupling, and the stereochemistry of the C15' position was controlled during the following conjugate reduction step. In the later half of this Account, our achievements in the field of high-oxidation state Securinega alkaloids synthesis are depicted. We have developed oxidative transformations at the N1 and C2-C4 positions, where the biosynthetic oxidation event occurs most frequently. The discovery of a VO(acac)2-mediated regioselective Polonovski reaction allowed us to access the key 2,3-dehydroallosecurinine (112). Divergent synthesis of secu'amamine A (62) and fluvirosaones A (60) and B (61) was accomplished by exploiting the versatile reactivities of the C2/C3 enamine moiety in 112. We have also employed a fragment-coupling strategy between menisdaurilide and piperidine units, which allowed the installation of various oxygen-containing functionality on the piperidine ring. Combined with the late-stage, light-mediated epimerization and well-orchestrated oxidative modifications, collective total synthesis of seven C4-oxygenated securinine-type natural products was achieved. Lastly, the synthesis of flueggeacosine B (70) via two synthetic routes from allosecurinine (103) was illustrated. The first-generation synthesis (seven overall steps) employing Pd-catalyzed cross-coupling between stannane and thioester to form the key C3-C15' bond enabled the structural revision of the natural product. In the second-generation synthesis, we have invented visible-light-mediated, Cu-catalyzed cross-dehydrogenative coupling (CDC) between an aldehyde and electron-deficient olefin, which streamlined the synthetic pathway into four overall steps. Organisms frequently utilize dimerization (oligomerization) and oxidations during the biosynthesis as a means to expand the chemical space of their secondary metabolites. Therefore, methods and strategies for dimerizations and oxidations that we have developed using the Securinega alkaloids as a platform would be broadly applicable to other alkaloids. It is our sincere hope that lessons we have learned during our synthetic journey would benefit other chemists working on organic synthesis.
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Affiliation(s)
- Gyumin Kang
- Department of Chemistry, Korea Advanced Institute of Science & Technology (KAIST), Daejeon 34141, Republic of Korea
| | - Sangbin Park
- Department of Chemistry, Korea Advanced Institute of Science & Technology (KAIST), Daejeon 34141, Republic of Korea
| | - Sunkyu Han
- Department of Chemistry, Korea Advanced Institute of Science & Technology (KAIST), Daejeon 34141, Republic of Korea
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4
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Park S, Kang G, Kim C, Kim D, Han S. Collective total synthesis of C4-oxygenated securinine-type alkaloids via stereocontrolled diversifications on the piperidine core. Nat Commun 2022; 13:5149. [PMID: 36056139 PMCID: PMC9440219 DOI: 10.1038/s41467-022-32902-z] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2022] [Accepted: 08/23/2022] [Indexed: 11/08/2022] Open
Abstract
Securinega alkaloids have fascinated the synthetic chemical community for over six decades. Historically, major research foci in securinega alkaloid synthesis have been on the efficient construction of the fused tetracyclic framework that bears a butenolide moiety and tertiary amine-based heterocycles. These "basic" securinega alkaloids have evolved to undergo biosynthetic oxidative diversifications, especially on the piperidine core. However, a general synthetic solution to access these high-oxidation state securinega alkaloids is lacking. In this study, we have completed the total synthesis of various C4-oxygenated securinine-type alkaloids including securingines A, C, D, securitinine, secu'amamine D, phyllanthine, and 4-epi-phyllanthine. Our synthetic strategy features stereocontrolled oxidation, rearrangement, and epimerization at N1 and C2-C4 positions of the piperidine core within (neo)securinane scaffolds. Our discoveries provide a fundamental synthetic solution to all known securinine-type natural products with various oxidative and stereochemical variations around the central piperidine ring.
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Affiliation(s)
- Sangbin Park
- Department of Chemistry, Korea Advanced Institute of Science & Technology (KAIST), Daejeon, 34141, Republic of Korea
| | - Gyumin Kang
- Department of Chemistry, Korea Advanced Institute of Science & Technology (KAIST), Daejeon, 34141, Republic of Korea
- Center for Catalytic Hydrocarbon Functionalizations, Institute for Basic Science (IBS), Daejeon, 34141, Republic of Korea
| | - Chansu Kim
- Department of Chemistry, Korea Advanced Institute of Science & Technology (KAIST), Daejeon, 34141, Republic of Korea
| | - Dongwook Kim
- Center for Catalytic Hydrocarbon Functionalizations, Institute for Basic Science (IBS), Daejeon, 34141, Republic of Korea
| | - Sunkyu Han
- Department of Chemistry, Korea Advanced Institute of Science & Technology (KAIST), Daejeon, 34141, Republic of Korea.
- Center for Catalytic Hydrocarbon Functionalizations, Institute for Basic Science (IBS), Daejeon, 34141, Republic of Korea.
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5
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Tian T, Li M, Feng W, Ding Y, Li Z, Shi Z, Shen T. Total Syntheses and Cytotoxicity Evaluation of Coryaurone A and Representative Analogues. JOURNAL OF NATURAL PRODUCTS 2022; 85:1634-1640. [PMID: 35671109 DOI: 10.1021/acs.jnatprod.2c00345] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
The first total synthesis of coryaurone A, which was originally obtained from Psoralea corylifolia L., was achieved via an efficient route with the longest linear sequence of six steps from the commercially available 6-hydroxy-2H-benzofuran-3-one in 37% overall yield. A series of representative analogues were synthesized from the same starting material in 4-7 steps with overall yields of 27-56%. The cytotoxicities of these compounds against the leukemia cell line HL-60 and the colon cancer cell line SW480 were determined. Among them, compounds 12, 14, 21, and 27 exhibited different levels of cytotoxic activity, which were greater than the positive control cisplatin.
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Affiliation(s)
- Tian Tian
- School of Chemistry and Chemical Engineering, Lanzhou Jiaotong University, Lanzhou Gansu 730070, People's Republic of China
| | - Minghan Li
- School of Chemistry and Chemical Engineering, Lanzhou Jiaotong University, Lanzhou Gansu 730070, People's Republic of China
| | - Wei Feng
- School of Chemistry and Chemical Engineering, Lanzhou Jiaotong University, Lanzhou Gansu 730070, People's Republic of China
| | - Yalong Ding
- School of Chemistry and Chemical Engineering, Lanzhou Jiaotong University, Lanzhou Gansu 730070, People's Republic of China
| | - Zhaoyu Li
- School of Chemistry and Chemical Engineering, Lanzhou Jiaotong University, Lanzhou Gansu 730070, People's Republic of China
| | - Zheng Shi
- School of Chemistry and Chemical Engineering, Lanzhou Jiaotong University, Lanzhou Gansu 730070, People's Republic of China
| | - Tong Shen
- School of Chemistry and Chemical Engineering, Lanzhou Jiaotong University, Lanzhou Gansu 730070, People's Republic of China
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6
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Singh SK, Mishra N, Kumar S, Jaiswal MK, Tiwari VK. Growing Impact of Carbohydrate‐Based Organocatalysts. ChemistrySelect 2022. [DOI: 10.1002/slct.202201314] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Sumit K. Singh
- Department of Chemistry Institute of Science Banaras Hindu University Varanasi 221005 INDIA
| | - Nidhi Mishra
- Department of Chemistry Institute of Science Banaras Hindu University Varanasi 221005 INDIA
| | - Sunil Kumar
- Department of Chemistry Institute of Science Banaras Hindu University Varanasi 221005 INDIA
| | - Manoj K. Jaiswal
- Department of Chemistry Institute of Science Banaras Hindu University Varanasi 221005 INDIA
| | - Vinod K. Tiwari
- Department of Chemistry Institute of Science Banaras Hindu University Varanasi 221005 INDIA
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7
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Wojaczyńska E, Steppeler F, Iwan D, Scherrmann MC, Marra A. Synthesis and Applications of Carbohydrate-Based Organocatalysts. Molecules 2021; 26:7291. [PMID: 34885873 PMCID: PMC8659088 DOI: 10.3390/molecules26237291] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2021] [Revised: 11/22/2021] [Accepted: 11/24/2021] [Indexed: 12/22/2022] Open
Abstract
Organocatalysis is a very useful tool for the asymmetric synthesis of biologically or pharmacologically active compounds because it avoids the use of noxious metals, which are difficult to eliminate from the target products. Moreover, in many cases, the organocatalysed reactions can be performed in benign solvents and do not require anhydrous conditions. It is well-known that most of the above-mentioned reactions are promoted by a simple aminoacid, l-proline, or, to a lesser extent, by the more complex cinchona alkaloids. However, during the past three decades, other enantiopure natural compounds, the carbohydrates, have been employed as organocatalysts. In the present exhaustive review, the detailed preparation of all the sugar-based organocatalysts as well as their catalytic properties are described.
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Affiliation(s)
- Elżbieta Wojaczyńska
- Faculty of Chemistry, Wrocław University of Science and Technology, Wybrzeże Wyspiańskiego 27, 50 370 Wrocław, Poland
| | - Franz Steppeler
- Faculty of Chemistry, Wrocław University of Science and Technology, Wybrzeże Wyspiańskiego 27, 50 370 Wrocław, Poland
| | - Dominika Iwan
- Faculty of Chemistry, Wrocław University of Science and Technology, Wybrzeże Wyspiańskiego 27, 50 370 Wrocław, Poland
| | - Marie-Christine Scherrmann
- Institut de Chimie Moléculaire et des Matériaux d'Orsay (ICMMO), Université Paris-Saclay, Bâtiment 420, 91405 Orsay, France
| | - Alberto Marra
- Institut des Biomolécules Max Mousseron (IBMM-UMR 5247), Université de Montpellier, Pôle Chimie Balard Recherche, 1919 Route de Mende, 34293 Montpellier, France
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8
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Affiliation(s)
- Xiangqing Feng
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Molecular Recognition and Function, Institute of Chemistry, Chinese Academy of Sciences Beijing 100190 China
- University of Chinese Academy of Sciences Beijing 100049 China
| | - Haifeng Du
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Molecular Recognition and Function, Institute of Chemistry, Chinese Academy of Sciences Beijing 100190 China
- University of Chinese Academy of Sciences Beijing 100049 China
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9
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Optimization of Two Steps in Scale-Up Synthesis of Nannocystin A. Mar Drugs 2021; 19:md19040198. [PMID: 33807472 PMCID: PMC8066987 DOI: 10.3390/md19040198] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2021] [Revised: 03/23/2021] [Accepted: 03/29/2021] [Indexed: 01/03/2023] Open
Abstract
We have accomplished a 10-step (longest linear) total synthesis of nannocystin A on a four hundred milligram scale. The previously reported Kobayashi vinylogous Mukaiyama aldol reaction to connect C4 and C5 was unreproducible during the scaling up process. A more convenient and cost-efficient Keck asymmetric vinylogous aldol reaction was employed to improve this transformation.
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10
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11
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Clarasó C, Vicens L, Polo A, Costas M. Enantioselective Epoxidation of β,β-Disubstituted Enamides with a Manganese Catalyst and Aqueous Hydrogen Peroxide. Org Lett 2019; 21:2430-2435. [PMID: 30883137 DOI: 10.1021/acs.orglett.9b00729] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Enantioselective epoxidation of β,β-disubstituted enamides with aqueous hydrogen peroxide and a novel manganese catalyst is described. Epoxidation is stereospecific and proceeds fast under mild conditions. Amides are disclosed as key functional groups to enable high enantioselectivity.
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Affiliation(s)
- Carlota Clarasó
- Department de Química , Universitat de Girona . Campus de Montilivi, E-17003 Girona , Catalonia , Spain.,Institut de Química Computacional i Catàlisi (IQCC) , Universitat de Girona , E-17003 Girona , Catalonia , Spain
| | - Laia Vicens
- Department de Química , Universitat de Girona . Campus de Montilivi, E-17003 Girona , Catalonia , Spain.,Institut de Química Computacional i Catàlisi (IQCC) , Universitat de Girona , E-17003 Girona , Catalonia , Spain
| | - Alfonso Polo
- Department de Química , Universitat de Girona . Campus de Montilivi, E-17003 Girona , Catalonia , Spain
| | - Miquel Costas
- Department de Química , Universitat de Girona . Campus de Montilivi, E-17003 Girona , Catalonia , Spain.,Institut de Química Computacional i Catàlisi (IQCC) , Universitat de Girona , E-17003 Girona , Catalonia , Spain
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12
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Gupta AK, Yin X, Mukherjee M, Desai AA, Mohammadlou A, Jurewicz K, Wulff WD. Catalytic Asymmetric Epoxidation of Aldehydes with Two VANOL-Derived Chiral Borate Catalysts. Angew Chem Int Ed Engl 2019; 58:3361-3367. [PMID: 30556933 DOI: 10.1002/anie.201809511] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2018] [Revised: 12/13/2018] [Indexed: 12/15/2022]
Abstract
A highly diastereo- and enantioselective method for the epoxidation of aldehydes with α-diazoacetamides has been developed with two different borate ester catalysts of VANOL. Both catalytic systems are general for aromatic, aliphatic, and acetylenic aldehydes, giving high yields and inductions for nearly all cases. One borate ester catalyst has two molecules of VANOL and the other only one VANOL. Catalysts generated from BINOL and VAPOL are ineffective catalysts. An application is shown for access to the side-chain of taxol.
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Affiliation(s)
- Anil K Gupta
- Department of Chemistry, Michigan State University, East Lansing, MI, 48824, USA
| | - Xiaopeng Yin
- Department of Chemistry, Michigan State University, East Lansing, MI, 48824, USA
| | - Munmun Mukherjee
- Department of Chemistry, Michigan State University, East Lansing, MI, 48824, USA
| | - Aman A Desai
- Department of Chemistry, Michigan State University, East Lansing, MI, 48824, USA
| | - Aliakbar Mohammadlou
- Department of Chemistry, Michigan State University, East Lansing, MI, 48824, USA
| | - Kelsee Jurewicz
- Department of Chemistry, Michigan State University, East Lansing, MI, 48824, USA
| | - William D Wulff
- Department of Chemistry, Michigan State University, East Lansing, MI, 48824, USA
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13
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Gupta AK, Yin X, Mukherjee M, Desai AA, Mohammadlou A, Jurewicz K, Wulff WD. Catalytic Asymmetric Epoxidation of Aldehydes with Two VANOL-Derived Chiral Borate Catalysts. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201809511] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Affiliation(s)
- Anil K. Gupta
- Department of Chemistry; Michigan State University; East Lansing MI 48824 USA
| | - Xiaopeng Yin
- Department of Chemistry; Michigan State University; East Lansing MI 48824 USA
| | - Munmun Mukherjee
- Department of Chemistry; Michigan State University; East Lansing MI 48824 USA
| | - Aman A. Desai
- Department of Chemistry; Michigan State University; East Lansing MI 48824 USA
| | | | - Kelsee Jurewicz
- Department of Chemistry; Michigan State University; East Lansing MI 48824 USA
| | - William D. Wulff
- Department of Chemistry; Michigan State University; East Lansing MI 48824 USA
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14
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Spindler B, Kataeva O, Knölker HJ. Enantioselective Total Synthesis and Assignment of the Absolute Configuration of the Furo[3,2-a]carbazole Alkaloid Furoclausine-B. J Org Chem 2018; 83:15136-15143. [DOI: 10.1021/acs.joc.8b02426] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Benedikt Spindler
- Fakultät Chemie, Technische Universität Dresden, Bergstraße 66, 01069 Dresden, Germany
| | - Olga Kataeva
- A. M. Butlerov Chemistry Institute, Kazan Federal University, Kremlevskaya Str. 18, Kazan 420008 Russia
| | - Hans-Joachim Knölker
- Fakultät Chemie, Technische Universität Dresden, Bergstraße 66, 01069 Dresden, Germany
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15
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Zhao J, Wang W, Tang H, Ramella D, Luan Y. Modification of Cu2+ into Zr-based metal–organic framework (MOF) with carboxylic units as an efficient heterogeneous catalyst for aerobic epoxidation of olefins. MOLECULAR CATALYSIS 2018. [DOI: 10.1016/j.mcat.2018.06.023] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
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16
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Garcia-Castro M, Annamalai M, Golz C, Strohmann C, Kumar K. Stereoselective Synthesis of Trisubstituted Epoxides Marks the Route to Chiral Building Blocks with Quaternary Centers. European J Org Chem 2017. [DOI: 10.1002/ejoc.201701148] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Miguel Garcia-Castro
- Abteilung Chemische Biologie; Max-Planck-Institut für Molekulare Physiologie; Otto-Hahn-Straße 11 44227 Dortmund Germany
| | - Murali Annamalai
- Abteilung Chemische Biologie; Max-Planck-Institut für Molekulare Physiologie; Otto-Hahn-Straße 11 44227 Dortmund Germany
| | - Christopher Golz
- Fakultät Chemie und Chemische Biologie; Technische Universität Dortmund; Otto-Hahn-Straße 6 44221 Dortmund Germany
| | - Carsten Strohmann
- Fakultät Chemie und Chemische Biologie; Technische Universität Dortmund; Otto-Hahn-Straße 6 44221 Dortmund Germany
| | - Kamal Kumar
- Abteilung Chemische Biologie; Max-Planck-Institut für Molekulare Physiologie; Otto-Hahn-Straße 11 44227 Dortmund Germany
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17
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Rackl D, Kais V, Lutsker E, Reiser AO. Synthesis of Chiral Tetrahydrofurans and Pyrrolidines by Visible-Light-Mediated Deoxygenation. European J Org Chem 2017; 2017:2130-2138. [PMID: 28529446 PMCID: PMC5412674 DOI: 10.1002/ejoc.201700014] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2017] [Indexed: 11/12/2022]
Abstract
The synthesis of chiral tetrahydrofurans and pyrrolidines starting from 1,2-diols or β-amino alcohols, respectively, by visible-light-mediated deoxygenation is described. Easily accessible monoallylated/propargylated substrates were activated either as inexpensive ethyl oxalates or as recyclable 3,5-bis(trifluoromethyl)benzoates to generate alkyl radicals suitable for 5-exo-trig/5-exo-dig cyclizations under visible-light irradiation.
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Affiliation(s)
- Daniel Rackl
- Institute of Organic Chemistry University of Regensburg 93053 Regensburg Germany
| | - Viktor Kais
- Institute of Organic Chemistry University of Regensburg 93053 Regensburg Germany
| | - Eugen Lutsker
- Institute of Organic Chemistry University of Regensburg 93053 Regensburg Germany
| | - And Oliver Reiser
- Institute of Organic Chemistry University of Regensburg 93053 Regensburg Germany
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18
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Meninno S, Zullo L, Overgaard J, Lattanzi A. TunableCinchona-Based Thioureas-Catalysed Asymmetric Epoxidation to Synthetically Important Glycidic Ester Derivatives. Adv Synth Catal 2017. [DOI: 10.1002/adsc.201700146] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Sara Meninno
- Dipartimento di Chimica e Biologia “A. Zambelli”; Università di Salerno; Via Giovanni Paolo II 84084 Fisciano Italy
| | - Luca Zullo
- Dipartimento di Chimica e Biologia “A. Zambelli”; Università di Salerno; Via Giovanni Paolo II 84084 Fisciano Italy
| | - Jacob Overgaard
- Department of Chemistry; Aarhus University; Langelandsgade 140 8000 Aarhus Denmark
| | - Alessandra Lattanzi
- Dipartimento di Chimica e Biologia “A. Zambelli”; Università di Salerno; Via Giovanni Paolo II 84084 Fisciano Italy
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19
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Bulman Page PC, Chan Y, Noor Armylisas AH, Alahmdi M. Asymmetric epoxidation of chromenes mediated by iminium salts: Synthesis of mollugin and (3S,4R)-trans-3,4-dihydroxy-3,4-dihydromollugin. Tetrahedron 2016. [DOI: 10.1016/j.tet.2016.10.070] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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20
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Bulman Page PC, Bartlett CJ, Chan Y, Allin SM, McKenzie MJ, Lacour J, Jones GA. New biphenyl iminium salt catalysts for highly enantioselective asymmetric epoxidation: role of additional substitution and dihedral angle. Org Biomol Chem 2016; 14:4220-32. [PMID: 27006303 DOI: 10.1039/c6ob00542j] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
New biaryl iminium salt catalysts for enantioselective alkene epoxidation containing additional substitution in the heterocyclic ring are reported. The effects upon conformation and enantioselectivity of this additional substitution, and the influence of dihedral angle in these systems, has been investigated using a synthetic approach supported by density functional theory. Enantioselectivities of up to 97% ee were observed.
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Affiliation(s)
- Philip C Bulman Page
- School of Chemistry, University of East Anglia, Norwich Research Park, Norwich NR4 7TJ, UK.
| | - Christopher J Bartlett
- School of Chemistry, University of East Anglia, Norwich Research Park, Norwich NR4 7TJ, UK.
| | - Yohan Chan
- School of Chemistry, University of East Anglia, Norwich Research Park, Norwich NR4 7TJ, UK.
| | - Steven M Allin
- Department of Chemistry, Nottingham Trent University, Clifton, Nottinghamshire NG11 8NS, UK
| | - Michael J McKenzie
- Charnwood Molecular Ltd, 7 Beaumont Court, Prince William Road, Loughborough, Leicestershire LE11 5GA, UK
| | - Jérôme Lacour
- Département de Chimie Organique, Université de Genève, Quai Ernest Ansermet 30, CH-1121 Genève 4, Switzerland
| | - Garth A Jones
- School of Chemistry, University of East Anglia, Norwich Research Park, Norwich NR4 7TJ, UK.
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21
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Gaikwad RD, Kabiraj SS, Bhat SV. Synthesis of the fragrance terpene epoxides and selective monocyclization promoted by camphor and oxone®. FLAVOUR FRAG J 2016. [DOI: 10.1002/ffj.3322] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Ravindra D. Gaikwad
- V. G. Vaze College; Mumbai University; Mithagar Road, Mulund (E) Mumbai 400081 India
| | - Shilpi S. Kabiraj
- V. G. Vaze College; Mumbai University; Mithagar Road, Mulund (E) Mumbai 400081 India
| | - Sujata V. Bhat
- V. G. Vaze College; Mumbai University; Mithagar Road, Mulund (E) Mumbai 400081 India
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22
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Asakawa T, Yoshida A, Hirooka Y, Suzuki T, Itoh K, Shimizu K, Oku N, Furuta T, Wakimoto T, Inai M, Kan T. Synthesis of Chemical-Biology Tools Enabling in vivo Imaging and Analysis of Epigallocatechin Gallate. HETEROCYCLES 2016. [DOI: 10.3987/com-15-s(t)25] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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23
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Ji N, Yuan J, Liu M, Lan T, He W. Novel chiral Schiff base/Ti(iv) catalysts for the catalytic asymmetric epoxidation of N-alkenyl sulfonamides. Chem Commun (Camb) 2016; 52:7731-4. [DOI: 10.1039/c6cc02852g] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A novel highly enantioselective Schiff base/Ti(iv) catalyst for the catalytic asymmetric epoxidation of a series of N-alkenyl sulfonamides under mild conditions was described.
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Affiliation(s)
- Nan Ji
- Department of Chemistry
- School of Pharmacy
- Fourth Military Medical University
- Xi'an 710032
- P. R. China
| | - Jiani Yuan
- Department of Chemistry
- School of Pharmacy
- Fourth Military Medical University
- Xi'an 710032
- P. R. China
| | - Miaoxi Liu
- Department of Chemistry
- School of Pharmacy
- Fourth Military Medical University
- Xi'an 710032
- P. R. China
| | - Ting Lan
- Department of Chemistry
- School of Pharmacy
- Fourth Military Medical University
- Xi'an 710032
- P. R. China
| | - Wei He
- Department of Chemistry
- School of Pharmacy
- Fourth Military Medical University
- Xi'an 710032
- P. R. China
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24
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Zhou Y, Jiang J, Gao Y, Ma J, Pang SY, Li J, Lu XT, Yuan LP. Activation of Peroxymonosulfate by Benzoquinone: A Novel Nonradical Oxidation Process. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2015; 49:12941-12950. [PMID: 26452059 DOI: 10.1021/acs.est.5b03595] [Citation(s) in RCA: 506] [Impact Index Per Article: 56.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
The reactions between peroxymonosulfate (PMS) and quinones were investigated for the first time in this work, where benzoquinone (BQ) was selected as a model quinone. It was demonstrated that BQ could efficiently activate PMS for the degradation of sulfamethoxazole (SMX; a frequently detected antibiotic in the environments), and the degradation rate increased with solution pH from 7 to 10. Interestingly, quenching studies suggested that neither hydroxyl radical (•OH) nor sulfate radical (SO4•-) was produced therein. Instead, the generation of singlet oxygen (1O2) was proved by using two chemical probes (i.e., 2,2,6,6-tetramethyl-4-piperidinol and 9,10-diphenylanthracene) with the appearance of 1O2 indicative products detected by electron paramagnetic resonance spectrometry and liquid chromatography mass spectrometry, respectively. A catalytic mechanism was proposed involving the formation of a dioxirane intermediate between PMS and BQ and the subsequent decomposition of this intermediate into 1O2. Accordingly, a kinetic model was developed, and it well described the experimental observation that the pH-dependent decomposition rate of PMS was first-order with respect to BQ. These findings have important implications for the development of novel nonradical oxidation processes based on PMS, because 1O2 as a moderately reactive electrophile may suffer less interference from background organic matters compared with nonselective •OH and SO4•-.
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Affiliation(s)
- Yang Zhou
- State Key Laboratory of Urban Water Resource and Environment, School of Municipal and Environmental Engineering, Harbin Institute of Technology , Harbin, Heilongjiang 150090, China
| | - Jin Jiang
- State Key Laboratory of Urban Water Resource and Environment, School of Municipal and Environmental Engineering, Harbin Institute of Technology , Harbin, Heilongjiang 150090, China
| | - Yuan Gao
- State Key Laboratory of Urban Water Resource and Environment, School of Municipal and Environmental Engineering, Harbin Institute of Technology , Harbin, Heilongjiang 150090, China
| | - Jun Ma
- State Key Laboratory of Urban Water Resource and Environment, School of Municipal and Environmental Engineering, Harbin Institute of Technology , Harbin, Heilongjiang 150090, China
| | - Su-Yan Pang
- Key Laboratory of Green Chemical Engineering and Technology of College of Heilongjiang Province, College of Chemical and Environmental Engineering, Harbin University of Science and Technology , Harbin, Heilongjiang 150040, China
| | - Juan Li
- State Key Laboratory of Urban Water Resource and Environment, School of Municipal and Environmental Engineering, Harbin Institute of Technology , Harbin, Heilongjiang 150090, China
| | - Xue-Ting Lu
- Key Laboratory of Green Chemical Engineering and Technology of College of Heilongjiang Province, College of Chemical and Environmental Engineering, Harbin University of Science and Technology , Harbin, Heilongjiang 150040, China
| | - Li-Peng Yuan
- Key Laboratory of Green Chemical Engineering and Technology of College of Heilongjiang Province, College of Chemical and Environmental Engineering, Harbin University of Science and Technology , Harbin, Heilongjiang 150040, China
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25
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Bulman Page PC, Pearce CA, Chan Y, Parker P, Buckley BR, Rassias GA, Elsegood MRJ. Atropo- and Diastereoselective Construction of Tetracyclic Biphenylazepinium Salts Derived from Aminoalcohols: Use as Catalysts in Enantioselective Asymmetric Epoxidation. J Org Chem 2015. [DOI: 10.1021/acs.joc.5b01157] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Philip C. Bulman Page
- School
of Chemistry, University of East Anglia, Norwich Research Park, Norwich, Norfolk NR4 7TJ, U.K
| | - Christopher A. Pearce
- School
of Chemistry, University of East Anglia, Norwich Research Park, Norwich, Norfolk NR4 7TJ, U.K
| | - Yohan Chan
- School
of Chemistry, University of East Anglia, Norwich Research Park, Norwich, Norfolk NR4 7TJ, U.K
| | - Phillip Parker
- Chemistry
Department, Loughborough University, Loughborough, Leicestershire LE11 3TU, U.K
| | - Benjamin R. Buckley
- Chemistry
Department, Loughborough University, Loughborough, Leicestershire LE11 3TU, U.K
| | | | - Mark R. J. Elsegood
- Chemistry
Department, Loughborough University, Loughborough, Leicestershire LE11 3TU, U.K
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26
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Zeng C, Yuan D, Zhao B, Yao Y. Highly Enantioselective Epoxidation of α,β-Unsaturated Ketones Catalyzed by Rare-Earth Amides [(Me3Si)2N]3RE(μ-Cl)Li(THF)3 with Phenoxy-Functionalized Chiral Prolinols. Org Lett 2015; 17:2242-5. [DOI: 10.1021/acs.orglett.5b00833] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Affiliation(s)
- Chao Zeng
- Key
Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry,
Chemical Engineering and Materials Science, Dushu Lake
Campus, Soochow University, Suzhou 215123, People’s Republic of China
| | - Dan Yuan
- Key
Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry,
Chemical Engineering and Materials Science, Dushu Lake
Campus, Soochow University, Suzhou 215123, People’s Republic of China
| | - Bei Zhao
- Key
Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry,
Chemical Engineering and Materials Science, Dushu Lake
Campus, Soochow University, Suzhou 215123, People’s Republic of China
| | - Yingming Yao
- Key
Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry,
Chemical Engineering and Materials Science, Dushu Lake
Campus, Soochow University, Suzhou 215123, People’s Republic of China
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27
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Candu N, Rizescu C, Podolean I, Tudorache M, Parvulescu VI, Coman SM. Efficient magnetic and recyclable SBILC (supported basic ionic liquid catalyst)-based heterogeneous organocatalysts for the asymmetric epoxidation of trans-methylcinnamate. Catal Sci Technol 2015. [DOI: 10.1039/c4cy00891j] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A green heterogeneous catalytic alternative was developed for the asymmetric epoxidation of trans-methylcinnamate to (2R,3S)-phenyl glycidate.
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Affiliation(s)
- N. Candu
- Department of Organic Chemistry, Biochemistry and Catalysis
- Faculty of Chemistry
- University of Bucharest
- Bucharest 030018
- Romania
| | - C. Rizescu
- Department of Organic Chemistry, Biochemistry and Catalysis
- Faculty of Chemistry
- University of Bucharest
- Bucharest 030018
- Romania
| | - I. Podolean
- Department of Organic Chemistry, Biochemistry and Catalysis
- Faculty of Chemistry
- University of Bucharest
- Bucharest 030018
- Romania
| | - M. Tudorache
- Department of Organic Chemistry, Biochemistry and Catalysis
- Faculty of Chemistry
- University of Bucharest
- Bucharest 030018
- Romania
| | - V. I. Parvulescu
- Department of Organic Chemistry, Biochemistry and Catalysis
- Faculty of Chemistry
- University of Bucharest
- Bucharest 030018
- Romania
| | - S. M. Coman
- Department of Organic Chemistry, Biochemistry and Catalysis
- Faculty of Chemistry
- University of Bucharest
- Bucharest 030018
- Romania
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28
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Takahashi M, Suzuki N, Ishikawa T, Huang HY, Chang HS, Chen IS. Unprecedented 8,9'-neolignans: enantioselective synthesis of possible stereoisomers for structural determination. JOURNAL OF NATURAL PRODUCTS 2014; 77:2585-2589. [PMID: 25427159 DOI: 10.1021/np500641a] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
(+)-Wutaienin (3) and its C-7 methyl ether (4), isolated from Zanthoxylum wutaiense, were found to be unprecedented 8,9'-neolignans containing an (S)-2-(1,1-dimethyl-1-hydroxymethyl)-7-methoxydihydrobenzofuran skeleton. Wutaienin (3) was present in the plant as an inseparable 1:1 mixture of the (7,8)-syn-diastereoisomers. The diastereoisomeric mixture was characterized by comparison with four possible diastereoisomers, which were enantioselectively synthesized from (S)-5-bromo-(1,1-dimethyl-1-hydroxymethyl)-7-methoxydihydrobenzofuran using Evans' oxazolidinone-assisted asymmetric aldol condensation to install the chiral centers at the C-7 and C-8 positions.
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Affiliation(s)
- Masato Takahashi
- Graduate School of Pharmaceutical Sciences, Chiba University , 1-8-1 Inohana, Chuo, Chiba 260-8675, Japan
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29
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Luo L, Yamamoto H. Iron(II)-Catalyzed Asymmetric Epoxidation of Trisubstituted α,β-Unsaturated Esters. European J Org Chem 2014; 2014:7803-7805. [PMID: 26146482 DOI: 10.1002/ejoc.201403220] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
An asymmetric epoxidation of trisubstituted α,β-unsaturated esters is described. The oxidation utilizes a pseudo-C2-symmetric iron(II) catalyst [Fe(L*)2(CH3CN)(OTf)](OTf) and peracetic acid as oxidant, yielding the α,β-epoxyesters in high enantiomeric purity (up to 99% ee).
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Affiliation(s)
- Lan Luo
- Department of Chemistry, The University of Chicago, 5735 South Ellis Avenue, Chicago, Illinois 60637 (United States)
| | - Hisashi Yamamoto
- Department of Chemistry, The University of Chicago, 5735 South Ellis Avenue, Chicago, Illinois 60637 (United States), Molecular Catalyst Research Center, Chubu University, 1200 Matsumoto, Kasugai, Aichi 487-8501 (Japan)
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30
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Bulman Page PC, Chan Y, Liddle J, Elsegood MR. Carbohydrate-derived iminium salt organocatalysts for the asymmetric epoxidation of alkenes. Tetrahedron 2014. [DOI: 10.1016/j.tet.2014.07.052] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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31
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Kawai H, Shibata N. Asymmetric Synthesis of Agrochemically Attractive Trifluoromethylated Dihydroazoles and Related Compounds under Organocatalysis. CHEM REC 2014; 14:1024-40. [DOI: 10.1002/tcr.201402023] [Citation(s) in RCA: 53] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2014] [Indexed: 11/10/2022]
Affiliation(s)
- Hiroyuki Kawai
- Department of Nanopharmaceutical Science and Department of Frontier Materials; Graduate School of Engineering; Nagoya Institute of Technology; Gokiso Showa-ku Nagoya 466-8555 Japan
| | - Norio Shibata
- Department of Nanopharmaceutical Science and Department of Frontier Materials; Graduate School of Engineering; Nagoya Institute of Technology; Gokiso Showa-ku Nagoya 466-8555 Japan
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32
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Held FE, Wei S, Eder K, Tsogoeva SB. One-pot route to β-adrenergic blockers via enantioselective organocatalysed epoxidation of terminal alkenes as a key step. RSC Adv 2014. [DOI: 10.1039/c4ra04011b] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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33
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Nguyen VH, Pham VC, Do TT, Mai HDT, Le NT, Vu VN, Tran VH, Nguyen TMH, Dehaen W, Chau VM. Synthesis and Biological Evaluation of Oseltamivir Analogues from Shikimic Acid. Nat Prod Commun 2014. [DOI: 10.1177/1934578x1400900724] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
New oseltamivir analogues were designed and synthesized, starting from shikimic acid. Biological evaluation against three human cancer cell lines (KB, MCF7 and Lu-1) showed that many of them exhibited cytotoxic activity. Azides 5 are more active than the corresponding amines 6. Thus, the reduction of the azide group into amine led to the loss of cytotoxicity. The compounds with a cyclohexanemethyloxy group at C-3 were more active than the other investigated compounds belonging to the same series. This cyclohexanemethyloxy group seems to be critical for the cytotoxic activity of this class of compounds. The synthetic oseltamivir analogues 6a-e had no inhibition activity, even at the concentration of 50 μM when they were evaluated for their in vitro influenza A neuraminidase inhibitory activity by an enzymatic assay.
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Affiliation(s)
- Van Hung Nguyen
- Institute of Marine Biochemistry – VAST, 18, Hoang Quoc Viet Road, Cau Giay, Hanoi, Vietnam
| | - Van Cuong Pham
- Institute of Marine Biochemistry – VAST, 18, Hoang Quoc Viet Road, Cau Giay, Hanoi, Vietnam
| | - Thi Thao Do
- Institute of Biotechnology – VAST, 18, Hoang Quoc Viet Road, Cau Giay, Hanoi, Vietnam
| | - Huong Doan Thi Mai
- Institute of Marine Biochemistry – VAST, 18, Hoang Quoc Viet Road, Cau Giay, Hanoi, Vietnam
| | - Nguyen Thanh Le
- Institute of Marine Biochemistry – VAST, 18, Hoang Quoc Viet Road, Cau Giay, Hanoi, Vietnam
| | - Van Nam Vu
- Institute of Marine Biochemistry – VAST, 18, Hoang Quoc Viet Road, Cau Giay, Hanoi, Vietnam
| | - Van Hieu Tran
- Institute of Marine Biochemistry – VAST, 18, Hoang Quoc Viet Road, Cau Giay, Hanoi, Vietnam
| | - Thi Minh Hang Nguyen
- Institute of Marine Biochemistry – VAST, 18, Hoang Quoc Viet Road, Cau Giay, Hanoi, Vietnam
| | - Wim Dehaen
- Department of Chemistry, KU Leuven, Celestijnenlaan 200F 3001, Leuven, Belgium
| | - Van Minh Chau
- Institute of Marine Biochemistry – VAST, 18, Hoang Quoc Viet Road, Cau Giay, Hanoi, Vietnam
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34
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Davis RL, Stiller J, Naicker T, Jiang H, Jørgensen KA. Asymmetric organocatalytic epoxidations: reactions, scope, mechanisms, and applications. Angew Chem Int Ed Engl 2014; 53:7406-26. [PMID: 24919420 DOI: 10.1002/anie.201400241] [Citation(s) in RCA: 112] [Impact Index Per Article: 11.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2014] [Indexed: 12/26/2022]
Abstract
Chiral epoxides serve as versatile building blocks in the synthesis of complex organic frameworks. The high strain imposed by the three-membered ring system makes epoxides prone to a variety of nucleophilic ring-opening reactions. Since the development of the Sharpless epoxidation, there have been many important contributions and advances in this area. With the rapid development of the field of asymmetric organocatalysis, a wide range of organocatalysts is now able to catalyze the epoxidation of broad class of unsaturated carbonyl compounds. In this Minireview, recent progress in the development of organocatalytic asymmetric epoxidation methods, the proposed mechanisms of these reactions and their applications as intermediates is reported.
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Affiliation(s)
- Rebecca L Davis
- Center for Catalysis, Department of Chemistry, Aarhus University, 8000 Aarhus C (Denmark); Department of Chemistry, University of Manitoba, Winnipeg, Manitoba, R3T 2N2 (Canada)
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35
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Davis RL, Stiller J, Naicker T, Jiang H, Jørgensen KA. Organokatalytische asymmetrische Epoxidierungen - Reaktionen, Mechanismen und Anwendungen. Angew Chem Int Ed Engl 2014. [DOI: 10.1002/ange.201400241] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
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36
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Zhu Y, Wang Q, Cornwall RG, Shi Y. Organocatalytic asymmetric epoxidation and aziridination of olefins and their synthetic applications. Chem Rev 2014; 114:8199-256. [PMID: 24785198 DOI: 10.1021/cr500064w] [Citation(s) in RCA: 335] [Impact Index Per Article: 33.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Affiliation(s)
- Yingguang Zhu
- Department of Chemistry, Colorado State University , Fort Collins, Colorado 80523, United States
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37
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Ji T, Wang Y, Wang M, Niu B, Xie P, Pittman CU, Zhou A. Parallel syntheses of eight-membered ring sultams via two cascade reactions in water. ACS COMBINATORIAL SCIENCE 2013; 15:595-600. [PMID: 24180492 DOI: 10.1021/co400116p] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
From vinyl sulfonamides as precursors to vinyl sulfonamide epoxides, two cascade reaction protocols were developed to synthesize eight-membered ring sultams in water. These protocols employ intermolecular Michael addition by NaOH or NaHS in water, followed by rapid proton transfer and intramolecular 8-endo-tet epoxide ring-opening to give medium-size sultams selectively in one-pot. Novel core structures and high synthetic efficiency make these cascade reactions highly suitable for sultam library production. Both reactions proceeded well and afforded the respective sultams in good yields under environmentally friendly conditions.
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Affiliation(s)
- Tao Ji
- Pharmacy
School, Jiangsu University, Xuefu Road 301, Zhenjiang City, Jiangsu, 212013, China
| | - Yanjie Wang
- Pharmacy
School, Jiangsu University, Xuefu Road 301, Zhenjiang City, Jiangsu, 212013, China
| | - Min Wang
- Pharmacy
School, Jiangsu University, Xuefu Road 301, Zhenjiang City, Jiangsu, 212013, China
| | - Ben Niu
- Pharmacy
School, Jiangsu University, Xuefu Road 301, Zhenjiang City, Jiangsu, 212013, China
| | - Ping Xie
- Scientific
Information Research Institute, Jiangsu University (Library), Xuefu Road 301, Zhenjiang, Jiangsu, 212013, China
| | - Charles U. Pittman
- Department
of Chemistry, Mississippi State University, Mississippi State, Mississippi 39762, United States, United States
| | - Aihua Zhou
- Pharmacy
School, Jiangsu University, Xuefu Road 301, Zhenjiang City, Jiangsu, 212013, China
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38
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Lerum RV, Russo CM, Marquez JE, Chisholm JD. A Rhodium-Catalyzed Tandem Alkyne Dimerization/ 1,4-Addition Reaction. Adv Synth Catal 2013. [DOI: 10.1002/adsc.201300743] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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39
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Page PCB, Appleby LF, Chan Y, Day DP, Buckley BR, Slawin AMZ, Allin SM, McKenzie MJ. Kinetic resolution in asymmetric epoxidation using iminium salt catalysis. J Org Chem 2013; 78:8074-82. [PMID: 23862687 PMCID: PMC3817536 DOI: 10.1021/jo401345m] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2013] [Indexed: 01/23/2023]
Abstract
The first reported examples of kinetic resolution in epoxidation reactions using iminium salt catalysis are described, providing up to 99% ee in the epoxidation of racemic cis-chromenes.
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Affiliation(s)
- Philip C Bulman Page
- School of Chemistry, University of East Anglia, Norwich Research Park, Norwich, Norfolk NR4 7TJ, UK.
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40
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Hussain H, Green IR, Ahmed I. Journey describing applications of oxone in synthetic chemistry. Chem Rev 2013; 113:3329-71. [PMID: 23451713 DOI: 10.1021/cr3004373] [Citation(s) in RCA: 186] [Impact Index Per Article: 16.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Affiliation(s)
- Hidayat Hussain
- Department of Chemistry, University of Paderborn, Warburger Strasse 100, 33098 Paderborn, Germany.
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41
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Kawai H, Okusu S, Yuan Z, Tokunaga E, Yamano A, Shiro M, Shibata N. Enantioselective Synthesis of Epoxides Having a Tetrasubstituted Trifluoromethylated Carbon Center: Methylhydrazine-Induced Aerobic Epoxidation of β,β-Disubstituted Enones. Angew Chem Int Ed Engl 2013; 52:2221-5. [DOI: 10.1002/anie.201209355] [Citation(s) in RCA: 86] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2012] [Revised: 12/23/2012] [Indexed: 11/06/2022]
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Kawai H, Okusu S, Yuan Z, Tokunaga E, Yamano A, Shiro M, Shibata N. Enantioselective Synthesis of Epoxides Having a Tetrasubstituted Trifluoromethylated Carbon Center: Methylhydrazine-Induced Aerobic Epoxidation of β,β-Disubstituted Enones. Angew Chem Int Ed Engl 2013. [DOI: 10.1002/ange.201209355] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Bulman Page PC, Mace A, Arquier D, Bethell D, Buckley BR, Willock DJ, Hutchings GJ. Towards heterogeneous organocatalysis: chiral iminium cations supported on porous materials for enantioselective alkene epoxidation. Catal Sci Technol 2013. [DOI: 10.1039/c3cy00352c] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Wang W, Xue J, Tian T, Jiao Y, Li Y. The first asymmetric total synthesis of (+)-coriandrone A and B. Org Biomol Chem 2013; 11:6686-90. [DOI: 10.1039/c3ob41497c] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Xuan YN, Lin HS, Yan M. Highly efficient asymmetric synthesis of α,β-epoxy esters via one-pot organocatalytic epoxidation and oxidative esterification. Org Biomol Chem 2013; 11:1815-7. [DOI: 10.1039/c3ob00056g] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Page PCB, Bartlett CJ, Chan Y, Day D, Parker P, Buckley BR, Rassias GA, Slawin AMZ, Allin SM, Lacour J, Pinto A. Asymmetric epoxidation using iminium salt organocatalysts featuring dynamically controlled atropoisomerism. J Org Chem 2012; 77:6128-38. [PMID: 22708806 DOI: 10.1021/jo300915u] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Introduction of a pseudoaxial substituent at a stereogenic center adjacent to the nitrogen atom in binaphthyl- and biphenyl-derived azepinium salt organocatalysts affords improved enantioselectivities and yields in the epoxidation of unfunctionalized alkenes. In the biphenyl-derived catalysts, the atropoisomerism at the biphenyl axis is controlled by the interaction of this substituent with the chiral substituent at nitrogen.
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Affiliation(s)
- Philip C Bulman Page
- School of Chemistry, University of East Anglia, Norwich Research Park, Norwich, Norfolk NR4 7TJ, UK.
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Schöberl C, Jäger V. 3- and 4-Uloses Derived from N-Acetyl-D-glucosamine: A Unique Pair of Complementary Organocatalysts for Asymmetric Epoxidation of Alkenes. Adv Synth Catal 2012. [DOI: 10.1002/adsc.201100735] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Zhao D, Mao L, Wang L, Yang D, Wang R. Catalytic asymmetric construction of tetrasubstituted carbon stereocenters by conjugate addition of dialkyl phosphine oxides to β,β-disubstituted α,β-unsaturated carbonyl compounds. Chem Commun (Camb) 2012; 48:889-91. [DOI: 10.1039/c1cc16079f] [Citation(s) in RCA: 51] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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First enantioselective synthesis of methyl (+)-7-methoxyanodendroate, an antitubercular dihydrobenzofuran. Tetrahedron Lett 2011. [DOI: 10.1016/j.tetlet.2011.10.095] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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Peng X, Li P, Shi Y. Synthesis of (+)-Ambrisentan via Chiral Ketone-Catalyzed Asymmetric Epoxidation. J Org Chem 2011; 77:701-3. [DOI: 10.1021/jo201927m] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Xianyou Peng
- Beijing National Laboratory
for Molecular Sciences, CAS Key Laboratory of Molecular Recognition
and Function, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
| | - Peijun Li
- Beijing National Laboratory
for Molecular Sciences, CAS Key Laboratory of Molecular Recognition
and Function, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
| | - Yian Shi
- Beijing National Laboratory
for Molecular Sciences, CAS Key Laboratory of Molecular Recognition
and Function, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
- Department of Chemistry, Colorado State University, Fort Collins, Colorado 80523,
United States
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