1
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Jo WS, Curtis BJ, Rehan M, Adrover-Castellano ML, Sherman DH, Healy AR. N-to- S Acyl Transfer as an Enabling Strategy in Asymmetric and Chemoenzymatic Synthesis. JACS AU 2024; 4:2058-2066. [PMID: 38818054 PMCID: PMC11134368 DOI: 10.1021/jacsau.4c00257] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/20/2024] [Revised: 05/01/2024] [Accepted: 05/02/2024] [Indexed: 06/01/2024]
Abstract
The observation of thioester-mediated acyl transfer processes in nature has inspired the development of novel protein synthesis and functionalization methodologies. The chemoselective transfer of an acyl group from S-to-N is the basis of several powerful ligation strategies. In this work, we sought to apply the reverse process, the transfer of an acyl group from N-to-S, as a method to convert stable chiral amides into more reactive thioesters. To this end, we developed a novel cysteine-derived oxazolidinone that serves as both a chiral imide auxiliary and an acyl transfer agent. This auxiliary combines the desirable features of rigid chiral imides as templates for asymmetric transformations with the synthetic applicability of thioesters. We demonstrate that the auxiliary can be applied in a range of highly selective asymmetric transformations. Subsequent intramolecular N-to-S acyl transfer of the chiral product and in situ trapping of the resulting thioester provides access to diverse carboxylic acid derivatives under mild conditions. The oxazolidinone thioester products can also be isolated and used in Pd-mediated transformations to furnish highly valuable chiral scaffolds, such as noncanonical amino acids, cyclic ketones, tetrahydropyrones, and dihydroquinolinones. Finally, we demonstrate that the oxazolidinone thioesters can also serve as a surrogate for SNAC-thioesters, enabling their seamless use as non-native substrates in biocatalytic transformations.
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Affiliation(s)
- Woonkee S Jo
- Chemistry Program, New York University Abu Dhabi (NYUAD), Saadiyat Island, Abu Dhabi 129188, United Arab Emirates (UAE)
| | - Brian J Curtis
- Life Sciences Institute, University of Michigan, 210 Washtenaw Avenue, Ann Arbor, MI 48109, USA
| | - Mohammad Rehan
- Chemistry Program, New York University Abu Dhabi (NYUAD), Saadiyat Island, Abu Dhabi 129188, United Arab Emirates (UAE)
| | | | - David H Sherman
- Life Sciences Institute, University of Michigan, 210 Washtenaw Avenue, Ann Arbor, MI 48109, USA
- Departments of Medicinal Chemistry, Chemistry, and Microbiology & Immunology, University of Michigan, Ann Arbor, MI 48109USA
| | - Alan R Healy
- Chemistry Program, New York University Abu Dhabi (NYUAD), Saadiyat Island, Abu Dhabi 129188, United Arab Emirates (UAE)
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2
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Oiarbide M, Palomo C. Brønsted Base-Catalyzed Enantioselective α-Functionalization of Carbonyl Compounds Involving π-Extended Enolates. CHEM REC 2023; 23:e202300164. [PMID: 37350363 DOI: 10.1002/tcr.202300164] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2023] [Revised: 06/06/2023] [Indexed: 06/24/2023]
Abstract
Chiral Brønsted base (BB) catalyzed asymmetric transformations constitute an important tool for synthesis. A meaningful fraction of these transformations proceeds through transiently generated enolate intermediates, which display quite versatile reactivity against a variety of electrophiles. Some years ago, our group became interested in developing BB-catalyzed asymmetric reactions of enolizable carbonyl substrates that involve π-extended enolates in which, besides control of reaction diastereo and enantioselectivity, the site-selectivity control is an additional issue in most cases. In the examples covered in this account the opportunities deployed, and the challenges posed, by these methods are illustrated, with a focus on the generation of quaternary carbon stereocenters. In the way, new bifunctional BB catalysts as well as achiral templates were developed that may find further applications.
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Affiliation(s)
- Mikel Oiarbide
- Departamento de Química Orgánica I, Universidad del País Vasco UPV/EHU, Manuel Lardizabal 3, 20018 San Sebastián, Spain
| | - Claudio Palomo
- Departamento de Química Orgánica I, Universidad del País Vasco UPV/EHU, Manuel Lardizabal 3, 20018 San Sebastián, Spain
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3
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Sayed M, Shi Z, Han ZY, Gong LZ. Asymmetric construction of phosphono dihydropyranones from α-ketophosphonates enabled by Pd/chiral isothiourea relay catalysis. Org Biomol Chem 2023; 21:7305-7310. [PMID: 37668247 DOI: 10.1039/d3ob01267k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/06/2023]
Abstract
A highly enantio- and diastereoselective approach has been developed for the synthesis of chiral phosphono dihydropyranones. This approach is enabled by Pd/chiral isothiourea relay catalysis under mild reaction conditions, starting from readily available benzyl bromides, CO, and α-ketophosphonates. The cascade reaction involves the generation of a ketene intermediate from Pd-catalyzed carbonylation of benzyl bromide and subsequent chiral Lewis base catalyzed formal [4 + 2] reaction. Phosphono lactone products can also be transformed to chiral 1,5-diester products in good yield and high stereoselectivity.
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Affiliation(s)
- Mostafa Sayed
- Department of Chemistry, University of Science and Technology of China, Hefei 230026, China.
- Chemistry Department, Faculty of Science, New Valley University, El-Kharja 72511, Egypt
| | - Zhipeng Shi
- Department of Chemistry, University of Science and Technology of China, Hefei 230026, China.
| | - Zhi-Yong Han
- Department of Chemistry, University of Science and Technology of China, Hefei 230026, China.
| | - Liu-Zhu Gong
- Department of Chemistry, University of Science and Technology of China, Hefei 230026, China.
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4
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Lin L, Wang M, Zhou J, Li F, Liu H. Highly diastereo- and enantioselective C2 addition of 5 H-oxazol-4-ones to γ-keto-α,β-unsaturated esters. Chem Commun (Camb) 2023; 59:3606-3609. [PMID: 36891781 DOI: 10.1039/d3cc00554b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/04/2023]
Abstract
The direct C2-addition of 5H-oxazol-4-ones to γ-keto-α,β-unsaturated esters catalyzed by a chiral squaramide has been achieved. Diverse highly functionalized γ-keto esters bearing a C2-oxazolone at the α-position were afforded in high yields with excellent stereoselectivities (d.r. > 20 : 1 and up to 98% ee).
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Affiliation(s)
- Li Lin
- Key Laboratory of Preclinical Study for New Drugs of Gansu Province, Research Unit of Peptide Science, Chinese Academy of Medical Sciences, 2019RU066, Institute of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Lanzhou University, Lanzhou, 730000, P. R. China.
| | - Mei Wang
- Key Laboratory of Preclinical Study for New Drugs of Gansu Province, Research Unit of Peptide Science, Chinese Academy of Medical Sciences, 2019RU066, Institute of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Lanzhou University, Lanzhou, 730000, P. R. China.
| | - Jiawei Zhou
- Key Laboratory of Preclinical Study for New Drugs of Gansu Province, Research Unit of Peptide Science, Chinese Academy of Medical Sciences, 2019RU066, Institute of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Lanzhou University, Lanzhou, 730000, P. R. China.
| | - Fei Li
- Key Laboratory of Preclinical Study for New Drugs of Gansu Province, Research Unit of Peptide Science, Chinese Academy of Medical Sciences, 2019RU066, Institute of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Lanzhou University, Lanzhou, 730000, P. R. China.
| | - Huiyun Liu
- Key Laboratory of Preclinical Study for New Drugs of Gansu Province, Research Unit of Peptide Science, Chinese Academy of Medical Sciences, 2019RU066, Institute of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Lanzhou University, Lanzhou, 730000, P. R. China.
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5
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Hans AC, Becker PM, Haußmann J, Suhr S, Wanner DM, Lederer V, Willig F, Frey W, Sarkar B, Kästner J, Peters R. A Practical and Robust Zwitterionic Cooperative Lewis Acid/Acetate/Benzimidazolium Catalyst for Direct 1,4-Additions. Angew Chem Int Ed Engl 2023; 62:e202217519. [PMID: 36651714 DOI: 10.1002/anie.202217519] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2022] [Revised: 01/17/2023] [Accepted: 01/18/2023] [Indexed: 01/19/2023]
Abstract
A catalyst type is disclosed allowing for exceptional efficiency in direct 1,4-additions. The catalyst is a zwitterionic entity, in which acetate binds to CuII , which is formally negatively charged and serving as counterion for benzimidazolium. All 3 functionalities are involved in the catalytic activation. For maleimides productivity was increased by a factor >300 compared to literature (TONs up to 6700). High stereoselectivity and productivity was attained for a broad range of other Michael acceptors as well. The polyfunctional catalyst is accessible in only 4 steps from N-Ph-benzimidazole with an overall yield of 96 % and robust during catalysis. This allowed to reuse the same catalyst multiple times with nearly constant efficiency. Mechanistic studies, in particular by DFT, give a detailed picture how the catalyst operates. The benzimidazolium unit stabilizes the coordinated enolate nucleophile and prevents that acetate/acetic acid dissociate from the catalyst.
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Affiliation(s)
- Andreas C Hans
- Universität Stuttgart, Institut für Organische Chemie, Pfaffenwaldring 55, 70569, Stuttgart, Germany
| | - Patrick M Becker
- Universität Stuttgart, Institut für Theoretische Chemie, Pfaffenwaldring 55, 70569, Stuttgart, Germany
| | - Johanna Haußmann
- Universität Stuttgart, Institut für Organische Chemie, Pfaffenwaldring 55, 70569, Stuttgart, Germany
| | - Simon Suhr
- Universität Stuttgart, Institut für Anorganische Chemie, Pfaffenwaldring 55, 70569, Stuttgart, Germany
| | - Daniel M Wanner
- Universität Stuttgart, Institut für Organische Chemie, Pfaffenwaldring 55, 70569, Stuttgart, Germany
| | - Vera Lederer
- Universität Stuttgart, Institut für Organische Chemie, Pfaffenwaldring 55, 70569, Stuttgart, Germany
| | - Felix Willig
- Universität Stuttgart, Institut für Organische Chemie, Pfaffenwaldring 55, 70569, Stuttgart, Germany
| | - Wolfgang Frey
- Universität Stuttgart, Institut für Organische Chemie, Pfaffenwaldring 55, 70569, Stuttgart, Germany
| | - Biprajit Sarkar
- Universität Stuttgart, Institut für Anorganische Chemie, Pfaffenwaldring 55, 70569, Stuttgart, Germany
| | - Johannes Kästner
- Universität Stuttgart, Institut für Theoretische Chemie, Pfaffenwaldring 55, 70569, Stuttgart, Germany
| | - René Peters
- Universität Stuttgart, Institut für Organische Chemie, Pfaffenwaldring 55, 70569, Stuttgart, Germany
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6
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Joshi H, Singh VK. Cinchona Derivatives as Bifunctional H‐bonding Organocatalysts in Asymmetric Vinylogous Conjugate Addition Reactions. ASIAN J ORG CHEM 2022. [DOI: 10.1002/ajoc.202100053] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Harshit Joshi
- Department of Chemistry Indian Institute of Technology Kanpur Kanpur-208016 Uttar Pradesh India
| | - Vinod K. Singh
- Department of Chemistry Indian Institute of Technology Kanpur Kanpur-208016 Uttar Pradesh India
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7
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Yıldırım A, Kaya Y, Göker M. Screening of simple carbohydrates as a renewable organocatalyst for the efficient construction of 1,3-benzoxazine scaffold. Carbohydr Res 2021; 510:108458. [PMID: 34634551 DOI: 10.1016/j.carres.2021.108458] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2021] [Revised: 10/03/2021] [Accepted: 10/05/2021] [Indexed: 11/25/2022]
Abstract
A convenient protocol for the two component preparation of 1,3-benzoxazines by using several protected and unprotected carbohydrate molecules as organocatalysts have been developed which is broadly applicable to condensation reaction between variety of Mannich bases and paraformaldehyde. This study revealed that fructose have much higher catalytic activity than the other carbohydrates and can be an alternative to metal-containing catalysts as a green renewable organocatalyst for efficient and rapid construction of 1,3-benzoxazine skeleton. In this context, 21 benzoxazine compounds were successfully synthesized and spectral characterizations of these compounds were carried out by spectroscopic methods and elemental analysis. Furthermore, density functional theory (DFT) calculations have been performed to study the detailed mechanism of organocatalyst assisted synthesis of the benzoxazine monomers. The results obtained from these calculations showed that the more realistic reaction pathway involves formation of a phenolate based intermediate which loses a water molecule to form benzenaminium ion. Subsequently, this ion provides the formation of the corresponding benzoxazines with good yields through the intramolecular ring closure step.
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Affiliation(s)
- Ayhan Yıldırım
- Department of Chemistry, Faculty of Arts and Sciences, Bursa Uludağ University, P. O. Box 16059, Bursa, Turkey.
| | - Yunus Kaya
- Department of Chemistry, Faculty of Natural Sciences, Architecture and Engineering, Bursa Technical University, Bursa, 16310, Turkey
| | - Mustafa Göker
- Department of Chemistry, Faculty of Arts and Sciences, Bursa Uludağ University, P. O. Box 16059, Bursa, Turkey
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8
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Yin Q, Wen X, Chen Y, Gong X, Hu L. Phase-Transfer Catalyzed Asymmetric [4 + 1] Annulations for the Synthesis of Chiral 2,2-Disubstituted Tetrahydrothiophenes. Org Lett 2021; 23:7529-7534. [PMID: 34529440 DOI: 10.1021/acs.orglett.1c02744] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
An efficient catalytic asymmetric [4 + 1] reaction, which features the use of simple β-keto esters as one-carbon nucleophiles and 5-succinimidothio-pent-2-enoates as four-atom bielectrophiles, has been developed in the presence of a bifunctional chiral phase-transfer catalyst. The new annulation provides a distinct protocol to access the functionalized 2-acyl-2-carboxyl tetrahydrothiophenes bearing consecutive quaternary and tertiary carbon stereocenters in high diastereoselectivities and enantioselectivities. Moreover, the prepared products could be readily transformed into the chiral 2-alkyl-2-carboxyl tetrahydrothiophenes via two steps of debenzoylation and alkylation reactions.
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Affiliation(s)
- Qi Yin
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research, School of Pharmaceutical Sciences, Chongqing University, Chongqing 401331, China
| | - Xiaolu Wen
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research, School of Pharmaceutical Sciences, Chongqing University, Chongqing 401331, China
| | - Yiwei Chen
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research, School of Pharmaceutical Sciences, Chongqing University, Chongqing 401331, China
| | - Xiangnan Gong
- Analytical and Testing Center, Chongqing University, Chongqing 401331, China
| | - Lin Hu
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research, School of Pharmaceutical Sciences, Chongqing University, Chongqing 401331, China
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9
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Zheng Y, Jiang W, Tan J, Yan J, Zhan R, Huang H. Organocatalytic β,γ-Selective Activation of Deconjugated Butenolides Access to Chiral Tricyclic Chroman-butyrolactones. J Org Chem 2021; 86:12821-12830. [PMID: 34465087 DOI: 10.1021/acs.joc.1c01449] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
A highly efficient method for the β,γ-selective activation of deconjugated butenolides has been developed through an organocatalytic asymmetric vinylogous cascade reaction. This protocol enables the construction of a broad range of substituted tricyclic chroman-butyrolactones by vinylogous Michael/oxa-Michael pathways in good yield (up to 89%) with good to high enantioselectivity (up to 97:3 er) and excellent diastereoselectivity. The ring-opening esterification of butyrolactones was also demonstrated.
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Affiliation(s)
- Yangqing Zheng
- Key Laboratory of Chinese Medicinal Resource from Lingnan, Ministry of Education, School of Pharmaceutical Sciences, Guangzhou University of Chinese Medicine, Guangzhou 510006, P.R. China
| | - Weichao Jiang
- Key Laboratory of Chinese Medicinal Resource from Lingnan, Ministry of Education, School of Pharmaceutical Sciences, Guangzhou University of Chinese Medicine, Guangzhou 510006, P.R. China
| | - Jingbo Tan
- Key Laboratory of Chinese Medicinal Resource from Lingnan, Ministry of Education, School of Pharmaceutical Sciences, Guangzhou University of Chinese Medicine, Guangzhou 510006, P.R. China
| | - Juzhang Yan
- Key Laboratory of Chinese Medicinal Resource from Lingnan, Ministry of Education, School of Pharmaceutical Sciences, Guangzhou University of Chinese Medicine, Guangzhou 510006, P.R. China
| | - Ruoting Zhan
- Key Laboratory of Chinese Medicinal Resource from Lingnan, Ministry of Education, School of Pharmaceutical Sciences, Guangzhou University of Chinese Medicine, Guangzhou 510006, P.R. China
| | - Huicai Huang
- Key Laboratory of Chinese Medicinal Resource from Lingnan, Ministry of Education, School of Pharmaceutical Sciences, Guangzhou University of Chinese Medicine, Guangzhou 510006, P.R. China.,Guangdong Provincial Key Laboratory of Catalysis, Southern University of Science and Technology, Shenzhen 518055, P.R. China
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10
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Wen J, Shi Z. From C4 to C7: Innovative Strategies for Site-Selective Functionalization of Indole C-H Bonds. Acc Chem Res 2021; 54:1723-1736. [PMID: 33709705 DOI: 10.1021/acs.accounts.0c00888] [Citation(s) in RCA: 103] [Impact Index Per Article: 34.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
The widespread presence of hydrocarbons makes C-H functionalization an attractive alternative to traditional cross-coupling methods. As indole is an important heteroarene in a plethora of natural products and pharmaceuticals, C-H functionalization of indole moieties has emerged as one of the most important topics in this field. Due to the presence of multiple C-H bonds in indoles, site selectivity is a long-standing challenge. Much effort has been devoted to the C-H functionalization of indoles at the C3 or C2 position, while accessing the benzene core (from C4 to C7) is considerably more challenging.This Account summarizes our recent efforts toward site-selective C-H functionalization of indoles at the benzene core based on innovative strategies. A common method to solve the issue involves the development of directing groups (DGs). Our early studies establish that the installation of the N-P(O)tBu2 group at the N position can produce C7 and C6 arylation products using palladium and copper catalysts, respectively. The developed system can also be extended to direct arylation of indoles at the C5 and C4 positions by installing a pivaloyl group at the C3 position. Further investigation of indoles bearing N-PtBu2 groups shows a more diverse reactivity for C-H functionalizations at the C7 position, including arylation, olefination, acylation, alkylation, silylation, and carbonylation with different coupling partners. Compared to the P(V) DG, the P(III) group can be easily attached to the indole substrates and detached from the products. However, these attractive reactions rely mostly on precious metal catalysts with ligands; this requirement can be a significant limitation, particularly for large-scale syntheses and the necessity of removal of toxic trace metals in pharmaceutical products. We have also uncovered a general strategy for chelation-assisted aromatic C-H borylation just using simple BBr3 under mild conditions, in which the installation of pivaloyl groups at the N1 or C3 position of indoles can selectively deliver the boron species to the unfavorable C7 or C4 positions and allow subsequent C-H borylation without any metal. This transition-metal-free strategy can be extended to synthesize C7 and C4 hydroxylated indoles by boron-mediated directed C-H hydroxylation under mild reaction conditions and with broad functional group compatibility.In this Account, we describe our contributions to this topic since 2015. These studies provide efficient and attractive methods for the divergent synthesis of valuable substituted indoles and insights into the exploration of new strategies for the site-selective C-H functionalization and directives for other important heteroarenes.
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Affiliation(s)
- Jian Wen
- State Key Laboratory of Coordination Chemistry, Chemistry and Biomedicine Innovation Center (ChemBIC), School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, China
| | - Zhuangzhi Shi
- State Key Laboratory of Coordination Chemistry, Chemistry and Biomedicine Innovation Center (ChemBIC), School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, China
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11
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Fujita K, Miura M, Funahashi Y, Hatanaka T, Nakamura S. Enantioselective Reaction of 2 H-Azirines with Oxazol-5-(4 H)-ones Catalyzed by Cinchona Alkaloid Sulfonamide Catalysts. Org Lett 2021; 23:2104-2108. [PMID: 33650878 DOI: 10.1021/acs.orglett.1c00259] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The enantioselective reaction of 2H-azirines with oxazol-5-(4H)-ones (oxazolones) using a cinchona alkaloid sulfonamide catalyst has been developed. The reaction proceeded at the C-2 position of oxazolones to afford products with consecutive tetrasubstituted stereogenic centers in high yield with high diastereo- and enantioselectivity. The obtained aziridines were converted into various chiral compounds without loss of enantiopurity.
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Affiliation(s)
- Kazuki Fujita
- Department of Life Science and Applied Chemistry, Graduate School of Engineering, Nagoya Institute of Technology, Gokiso, Showa-ku, Nagoya 466-8555, Japan
| | - Masataka Miura
- Department of Life Science and Applied Chemistry, Graduate School of Engineering, Nagoya Institute of Technology, Gokiso, Showa-ku, Nagoya 466-8555, Japan
| | - Yasuhiro Funahashi
- Department of Chemistry, Graduate School of Science, Osaka University, 1-1 Machikaneyama, Toyonaka, Osaka 560-0043, Japan
| | - Tsubasa Hatanaka
- Department of Chemistry, Graduate School of Science, Osaka University, 1-1 Machikaneyama, Toyonaka, Osaka 560-0043, Japan
| | - Shuichi Nakamura
- Department of Life Science and Applied Chemistry, Graduate School of Engineering, Nagoya Institute of Technology, Gokiso, Showa-ku, Nagoya 466-8555, Japan.,Frontier Research Institute for Material Science, Nagoya Institute of Technology, Gokiso, Showa-ku, Nagoya 466-8555, Japan
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12
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Peňaška T, Palchykov V, Rakovský E, Addová G, Šebesta R. Stereoselective Organocatalytic Construction of Spiro Oxindole Pyrrolidines Using Unsaturated α‐Ketoesters and α‐Ketoamides. European J Org Chem 2021. [DOI: 10.1002/ejoc.202100022] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Tibor Peňaška
- Department of Organic Chemistry Faculty of Natural Sciences Comenius University in Bratislava Mlynská dolina, Ilkovičova 6 84215 Bratislava Slovakia
| | - Vitalii Palchykov
- Department of Organic Chemistry Faculty of Natural Sciences Comenius University in Bratislava Mlynská dolina, Ilkovičova 6 84215 Bratislava Slovakia
- Research Institute of Chemistry and Geology Oles Honchar Dnipro National University Gagarina Av. 72 Dnipro 49010 Ukraine
| | - Erik Rakovský
- Department of Inorganic Chemistry Faculty of Natural Sciences Comenius University in Bratislava Mlynská dolina, Ilkovičova 6 84215 Bratislava Slovakia
| | - Gabriela Addová
- Department of Organic Chemistry Faculty of Natural Sciences Comenius University in Bratislava Mlynská dolina, Ilkovičova 6 84215 Bratislava Slovakia
| | - Radovan Šebesta
- Department of Organic Chemistry Faculty of Natural Sciences Comenius University in Bratislava Mlynská dolina, Ilkovičova 6 84215 Bratislava Slovakia
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13
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Arimura M, Tanaka K, Kanda M, Urushibara K, Fujii S, Katagiri K, Azumaya I, Kagechika H, Tanatani A. Construction of Aromatic Multilayered Structures Based on the Conformational Properties of N,N'-Dimethylated Squaramide. Chempluschem 2021; 86:198-205. [PMID: 33508169 DOI: 10.1002/cplu.202000678] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2020] [Revised: 01/12/2021] [Indexed: 11/10/2022]
Abstract
Squaramide is a highly rigid four-membered ring system bearing two carbonyl and two amino groups, and its derivatives have found applications in many fields. We synthesized several N,N'-dimethylated oligosquaramides linked via phenyl groups, and investigated their structures in the crystalline state and in solution. Compounds 1, 2 (bissquaramides), and 13 (trissquaramide) exist as folded structures in the crystalline state, in which the aromatic rings are located in a face-to-face position. In their multilayered structures, the benzene rings are more nearly parallel and are closer to each other, compared with those in N,N'-dimethylated oligoureas. Individual molecules of meta-connected compounds 2 and 13 show a helical structure with all-R or all-S axis chirality, but afford only racemic crystals. The NMR spectra indicated that these compounds retain well-ordered folded structures in solution. The unique steric and electronic properties of N,N'-dimethylated squaramide can provide access to novel functional aromatic multilayered and helical foldamers.
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Affiliation(s)
- Maiko Arimura
- Department of Chemistry, Faculty of Science, Ochanomizu University, 2-1-1 Otsuka, Bunkyo-ku, Tokyo, 112-8610, Japan
| | - Kimiko Tanaka
- Department of Chemistry, Faculty of Science, Ochanomizu University, 2-1-1 Otsuka, Bunkyo-ku, Tokyo, 112-8610, Japan
| | - Midori Kanda
- Department of Chemistry, Faculty of Science, Ochanomizu University, 2-1-1 Otsuka, Bunkyo-ku, Tokyo, 112-8610, Japan
| | - Ko Urushibara
- Department of Chemistry, Faculty of Science, Ochanomizu University, 2-1-1 Otsuka, Bunkyo-ku, Tokyo, 112-8610, Japan
| | - Shinya Fujii
- Institute of Biomaterials and Bioengineering, Tokyo Medical and Dental University (TMDU), 2-3-10 Kanda-Surugadai, Chiyoda-ku, Tokyo, 101-0062, Japan
| | - Kosuke Katagiri
- Department of Chemistry, Faculty of Science and Engineering, Konan University, 8-9-1 Okamoto, Higashinada, Kobe, Hyogo, 658-8501, Japan
| | - Isao Azumaya
- Faculty of Pharmaceutical Sciences, Toho University, 2-2-1 Miyama, Funabashi, Chiba, 274-8510, Japan
| | - Hiroyuki Kagechika
- Institute of Biomaterials and Bioengineering, Tokyo Medical and Dental University (TMDU), 2-3-10 Kanda-Surugadai, Chiyoda-ku, Tokyo, 101-0062, Japan
| | - Aya Tanatani
- Department of Chemistry, Faculty of Science, Ochanomizu University, 2-1-1 Otsuka, Bunkyo-ku, Tokyo, 112-8610, Japan
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14
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Zhu B, Yang T, Gu Y, Zhu S, Zhu G, Chang J. Enantioselective organocatalytic amination of 2-perfluoroalkyl-oxazol-5(2H)-ones towards the synthesis of chiral N,O-aminals with perfluoroalkyl and amino groups. Org Chem Front 2021. [DOI: 10.1039/d1qo00569c] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
The first highly enantioselective amination at the C-2 position of oxazol-5(2H)-ones has been presented. Two efficient relay asymmetric transformation processes were successfully utilized to synthesize chiral N,O-aminals with a quaternary center.
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Affiliation(s)
- Bo Zhu
- NMPA Key Laboratory for Research and Evaluation of Innovative Drug
- Henan Key Laboratory of Organic Functional Molecule and Drug Innovation
- School of Chemistry and Chemical Engineering
- Henan Normal University
- Xinxiang
| | - Tianxiao Yang
- NMPA Key Laboratory for Research and Evaluation of Innovative Drug
- Henan Key Laboratory of Organic Functional Molecule and Drug Innovation
- School of Chemistry and Chemical Engineering
- Henan Normal University
- Xinxiang
| | - Yingxin Gu
- NMPA Key Laboratory for Research and Evaluation of Innovative Drug
- Henan Key Laboratory of Organic Functional Molecule and Drug Innovation
- School of Chemistry and Chemical Engineering
- Henan Normal University
- Xinxiang
| | - Shuping Zhu
- NMPA Key Laboratory for Research and Evaluation of Innovative Drug
- Henan Key Laboratory of Organic Functional Molecule and Drug Innovation
- School of Chemistry and Chemical Engineering
- Henan Normal University
- Xinxiang
| | - Gongming Zhu
- NMPA Key Laboratory for Research and Evaluation of Innovative Drug
- Henan Key Laboratory of Organic Functional Molecule and Drug Innovation
- School of Chemistry and Chemical Engineering
- Henan Normal University
- Xinxiang
| | - Junbiao Chang
- NMPA Key Laboratory for Research and Evaluation of Innovative Drug
- Henan Key Laboratory of Organic Functional Molecule and Drug Innovation
- School of Chemistry and Chemical Engineering
- Henan Normal University
- Xinxiang
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15
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Rajeev N, Sharath Kumar KS, Bommegowda YK, Rangappa KS, Sadashiva MP. Catalyst free sequential one‐pot reaction for the synthesis of 3‐indole propanoates/propanoic acid/propanamides as antituberculosis agents. J CHIN CHEM SOC-TAIP 2020. [DOI: 10.1002/jccs.202000386] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
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16
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Li L, Yang T, Zhang T, Zhu B, Chang J. Organocatalytic Asymmetric Tandem Cyclization/Michael Addition via Oxazol-5(2 H)-One Formation: Access to Perfluoroalkyl-Containing N, O-Acetal Derivatives. J Org Chem 2020; 85:12294-12303. [PMID: 32893624 DOI: 10.1021/acs.joc.0c01545] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Herein, we report a convenient organocatalytic asymmetric tandem cyclization/Michael addition protocol for the synthesis of diastereomerically pure and highly enantioenriched perfluoroalkyl-containing N,O-acetal derivatives starting from racemic N-perfluoroacyl amino acids under mild conditions. This efficient atom economic reaction leads to highly enantioselective and diastereoselective construction of N,O-acetal derivatives containing oxazolone and perfluoroalkyl moieties containing vicinal quaternary and tertiary stereocenters (up to 97% yield, up to 96% ee, and up to >20:1 dr).
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Affiliation(s)
- Luyao Li
- Henan Key Laboratory of Organic Functional Molecule and Drug Innovation, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, P. R. China
| | - Tianxiao Yang
- Henan Key Laboratory of Organic Functional Molecule and Drug Innovation, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, P. R. China
| | - Tao Zhang
- Henan Key Laboratory of Organic Functional Molecule and Drug Innovation, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, P. R. China
| | - Bo Zhu
- Henan Key Laboratory of Organic Functional Molecule and Drug Innovation, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, P. R. China
| | - Junbiao Chang
- Henan Key Laboratory of Organic Functional Molecule and Drug Innovation, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, P. R. China
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17
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Chen Y, Wang Y, Wang S, Ma YY, Zhao DG, Zhan R, Huang H. Asymmetric Construction of Cyclobutanes via Direct Vinylogous Michael Addition/Cyclization of β,γ-Unsaturated Amides. Org Lett 2020; 22:7135-7140. [DOI: 10.1021/acs.orglett.0c02488] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- Yuzhen Chen
- Research Center of Chinese Herbal Resource Science and Engineering, Key Laboratory of Chinese Medicinal Resource from Lingnan, Ministry of Education, Guangzhou University of Chinese Medicine, Guangzhou 510006, China
| | - Yichen Wang
- Research Center of Chinese Herbal Resource Science and Engineering, Key Laboratory of Chinese Medicinal Resource from Lingnan, Ministry of Education, Guangzhou University of Chinese Medicine, Guangzhou 510006, China
| | - Shuzhong Wang
- Research Center of Chinese Herbal Resource Science and Engineering, Key Laboratory of Chinese Medicinal Resource from Lingnan, Ministry of Education, Guangzhou University of Chinese Medicine, Guangzhou 510006, China
| | - Yan-Yan Ma
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen 529020, China
| | - Deng-Gao Zhao
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen 529020, China
| | - Ruoting Zhan
- Research Center of Chinese Herbal Resource Science and Engineering, Key Laboratory of Chinese Medicinal Resource from Lingnan, Ministry of Education, Guangzhou University of Chinese Medicine, Guangzhou 510006, China
| | - Huicai Huang
- Research Center of Chinese Herbal Resource Science and Engineering, Key Laboratory of Chinese Medicinal Resource from Lingnan, Ministry of Education, Guangzhou University of Chinese Medicine, Guangzhou 510006, China
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18
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Verma RS, Mishra M, Pandey CB, Kumar S, Tiwari B. Global Access to 3/4-Phosphorylated Heterocycles via a Carbene-Catalyzed Stetter Reaction of Vinylphosphonates and Aldehydes. J Org Chem 2020; 85:8166-8175. [DOI: 10.1021/acs.joc.0c00150] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Ram Subhawan Verma
- Division of Molecular Synthesis & Drug Discovery, Centre of Biomedical Research, SGPGIMS-Campus, Raebareli Road, Lucknow 226014, India
| | - Monika Mishra
- Division of Molecular Synthesis & Drug Discovery, Centre of Biomedical Research, SGPGIMS-Campus, Raebareli Road, Lucknow 226014, India
| | - Chandra Bhan Pandey
- Division of Molecular Synthesis & Drug Discovery, Centre of Biomedical Research, SGPGIMS-Campus, Raebareli Road, Lucknow 226014, India
| | - Shailesh Kumar
- Department of Chemistry, Babasaheb Bhimrao Ambedkar University, Vidya Vihar, Raebareli Road, Lucknow 226025, India
| | - Bhoopendra Tiwari
- Division of Molecular Synthesis & Drug Discovery, Centre of Biomedical Research, SGPGIMS-Campus, Raebareli Road, Lucknow 226014, India
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19
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Chen L, He J. DABCO-Catalyzed Michael/Alkylation Cascade Reactions Involving α-Substituted Ammonium Ylides for the Construction of Spirocyclopropyl Oxindoles: Access to the Powerful Chemical Leads against HIV-1. J Org Chem 2020; 85:5203-5219. [DOI: 10.1021/acs.joc.9b03164] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Lin Chen
- School of Chemistry and Materials Science, Guizhou Normal University, Guiyang 550001, China
| | - Jin He
- School of Chemistry and Materials Science, Guizhou Normal University, Guiyang 550001, China
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20
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Curti C, Battistini L, Sartori A, Zanardi F. New Developments of the Principle of Vinylogy as Applied to π-Extended Enolate-Type Donor Systems. Chem Rev 2020; 120:2448-2612. [PMID: 32040305 PMCID: PMC7993750 DOI: 10.1021/acs.chemrev.9b00481] [Citation(s) in RCA: 102] [Impact Index Per Article: 25.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2019] [Indexed: 12/19/2022]
Abstract
The principle of vinylogy states that the electronic effects of a functional group in a molecule are possibly transmitted to a distal position through interposed conjugated multiple bonds. As an emblematic case, the nucleophilic character of a π-extended enolate-type chain system may be relayed from the legitimate α-site to the vinylogous γ, ε, ..., ω remote carbon sites along the chain, provided that suitable HOMO-raising strategies are adopted to transform the unsaturated pronucleophilic precursors into the reactive polyenolate species. On the other hand, when "unnatural" carbonyl ipso-sites are activated as nucleophiles (umpolung), vinylogation extends the nucleophilic character to "unnatural" β, δ, ... remote sites. Merging the principle of vinylogy with activation modalities and concepts such as iminium ion/enamine organocatalysis, NHC-organocatalysis, cooperative organo/metal catalysis, bifunctional organocatalysis, dicyanoalkylidene activation, and organocascade reactions represents an impressive step forward for all vinylogous transformations. This review article celebrates this evolutionary progress, by collecting, comparing, and critically describing the achievements made over the nine year period 2010-2018, in the generation of vinylogous enolate-type donor substrates and their use in chemical synthesis.
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Affiliation(s)
| | | | | | - Franca Zanardi
- Dipartimento di Scienze degli
Alimenti e del Farmaco, Università
di Parma, Parco Area delle Scienze 27A, 43124 Parma, Italy
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21
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Zhang Z, Xiao F, Wu HM, Dong XQ, Wang CJ. Pd-Catalyzed Asymmetric Hydroalkylation of 1,3-Dienes: Access to Unnatural α-Amino Acid Derivatives Containing Vicinal Quaternary and Tertiary Stereogenic Centers. Org Lett 2020; 22:569-574. [PMID: 31895576 DOI: 10.1021/acs.orglett.9b04341] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Pd-phosphinooxazoline (Pd-PHOX)-catalyzed asymmetric hydroalkylation of 1,3-dienes with azlactones was successfully developed for the first time, affording various enantioenriched α-quaternary α-amino acid derivatives bearing contiguous quaternary and tertiary stereogenic centers in good yields with exclusive regioselectivity and excellent stereoselective control (up to 92% yield, >20:1 dr, and >99% ee). The scale-up catalytic asymmetric hydroalkylation was performed well without loss of reactivity and stereoselectivities, which exhibited great potential application. The synthetic utility of the current methodology was demonstrated through product transformations to access other biologically important compounds such as chiral β-amino alcohol and α-quaternary cyclic α-amino acid derivatives.
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Affiliation(s)
- Zongpeng Zhang
- Engineering Research Center of Organosilicon Compounds & Materials, Ministry of Education, College of Chemistry and Molecular Sciences , Wuhan University , Wuhan 430072 , China
| | - Fan Xiao
- Engineering Research Center of Organosilicon Compounds & Materials, Ministry of Education, College of Chemistry and Molecular Sciences , Wuhan University , Wuhan 430072 , China
| | - Hui-Min Wu
- Engineering Research Center of Organosilicon Compounds & Materials, Ministry of Education, College of Chemistry and Molecular Sciences , Wuhan University , Wuhan 430072 , China
| | - Xiu-Qin Dong
- Engineering Research Center of Organosilicon Compounds & Materials, Ministry of Education, College of Chemistry and Molecular Sciences , Wuhan University , Wuhan 430072 , China
| | - Chun-Jiang Wang
- Engineering Research Center of Organosilicon Compounds & Materials, Ministry of Education, College of Chemistry and Molecular Sciences , Wuhan University , Wuhan 430072 , China.,State Key Laboratory of Organometallic Chemistry , Shanghai Institute of Organic Chemistry , Shanghai 230021 , China
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22
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Cativiela C, Ordóñez M, Viveros-Ceballos JL. Stereoselective synthesis of acyclic α,α-disubstituted α-amino acids derivatives from amino acids templates. Tetrahedron 2020. [DOI: 10.1016/j.tet.2019.130875] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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23
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Li L, Zhu B, Fan H, Jiang Z, Chang J. Direct organocatalytic asymmetric Michael reaction of fluorine hemiaminal-type nucleophile to 4-nitro-5-styrylisoxazoles. Org Chem Front 2020. [DOI: 10.1039/d0qo00348d] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Herein, we report a chiral bifunctional thiourea catalyzed asymmetric Michael addition reaction between 2-(trifluoromethyl)oxazol-5(2H)-one as a direct C-2-position nucleophile to 4-nitro-5-styrylisoxazoles for the first time.
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Affiliation(s)
- Luyao Li
- Henan Key Laboratory of Organic Functional Molecule and Drug Innovation
- School of Chemistry and Chemical Engineering
- Henan Normal University
- Xinxiang
- P. R. China
| | - Bo Zhu
- Henan Key Laboratory of Organic Functional Molecule and Drug Innovation
- School of Chemistry and Chemical Engineering
- Henan Normal University
- Xinxiang
- P. R. China
| | - Huihui Fan
- Henan Key Laboratory of Organic Functional Molecule and Drug Innovation
- School of Chemistry and Chemical Engineering
- Henan Normal University
- Xinxiang
- P. R. China
| | - Zhiyong Jiang
- Henan Key Laboratory of Organic Functional Molecule and Drug Innovation
- School of Chemistry and Chemical Engineering
- Henan Normal University
- Xinxiang
- P. R. China
| | - Junbiao Chang
- Henan Key Laboratory of Organic Functional Molecule and Drug Innovation
- School of Chemistry and Chemical Engineering
- Henan Normal University
- Xinxiang
- P. R. China
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24
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Bera K, Ayyagari N, Satam N, Namboothiri INN. Stereoselective synthesis of hydrazinodihydrofurans via cascade Michael addition-substitution involving the reaction of curcumin and other β-dicarbonyls with α-hydrazinonitroalkenes. Org Biomol Chem 2019; 18:140-153. [PMID: 31803896 DOI: 10.1039/c9ob01974j] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Highly diastereoselective synthesis of 2-hydrazinated 2,3-dihydrofurans in good to excellent yields involving an interrupted Feist-Bénary type reaction by treating a wide variety of 1,3-dicarbonyl compounds, including curcumins, with α-hydrazinated nitroalkenes is reported here. The first ever enantioselective reaction of α-hydrazinonitroalkenes has also been carried out with two selected 1,3-dicarbonyls, dimedone and cyclohexanone by employing an l-t-leucine derived squaramide as the chiral organocatalyst to afford the enantio-enriched 2-hydrazinodihydrofurans as single diastereomers in good yields and with good enantioselectivities.
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Affiliation(s)
- Kalisankar Bera
- Department of Chemistry, Indian Institute of Technology Bombay, Mumbai 400076, India.
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25
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Shu C, Liu H, Slawin AMZ, Carpenter-Warren C, Smith AD. Isothiourea-catalysed enantioselective Michael addition of N-heterocyclic pronucleophiles to α,β-unsaturated aryl esters. Chem Sci 2019; 11:241-247. [PMID: 34040717 PMCID: PMC8133005 DOI: 10.1039/c9sc04303a] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
The isothiourea-catalysed enantioselective Michael addition of 3-aryloxindole and 4-substituted-dihydropyrazol-3-one pronucleophiles to α,β-unsaturated p-nitrophenyl esters is reported. This process generates products containing two contiguous stereocentres, one quaternary, in good yields and excellent enantioselectivities (>30 examples, up to > 95 : 5 dr and 99 : 1 er). This protocol harnesses the multifunctional ability of p-nitrophenoxide to promote effective catalysis. In contrast to previous methodologies using tertiary amine Lewis bases, in which the pronucleophile was used as the solvent, this work allows bespoke pronucleophiles to be used in stoichiometric quantities. The isothiourea-catalysed enantioselective Michael addition of 3-aryloxindole and 4-substituted-dihydropyrazol-3-one pronucleophiles to α,β-unsaturated p-nitrophenyl esters is reported.![]()
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Affiliation(s)
- Chang Shu
- EaStCHEM, School of Chemistry, University of St Andrews North Haugh, St Andrews Fife KY16 9ST UK
| | - Honglei Liu
- EaStCHEM, School of Chemistry, University of St Andrews North Haugh, St Andrews Fife KY16 9ST UK
| | - Alexandra M Z Slawin
- EaStCHEM, School of Chemistry, University of St Andrews North Haugh, St Andrews Fife KY16 9ST UK
| | - Cameron Carpenter-Warren
- EaStCHEM, School of Chemistry, University of St Andrews North Haugh, St Andrews Fife KY16 9ST UK
| | - Andrew D Smith
- EaStCHEM, School of Chemistry, University of St Andrews North Haugh, St Andrews Fife KY16 9ST UK
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26
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Spontaneous chiral resolution of N,N′-diarylsquaramides: Formation of various types of one-handed helical networks during crystallization. Tetrahedron 2019. [DOI: 10.1016/j.tet.2019.03.049] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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27
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Campano TE, Iriarte I, Olaizola O, Etxabe J, Mielgo A, Ganboa I, Odriozola JM, García JM, Oiarbide M, Palomo C. Enantioselective Addition of Alkynyl Ketones to Nitroolefins Assisted by Brønsted Base/H‐Bonding Catalysis. Chemistry 2019; 25:4390-4397. [DOI: 10.1002/chem.201805542] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2018] [Indexed: 11/08/2022]
Affiliation(s)
- Teresa E. Campano
- Departamento de Química Orgánica IUniversidad del País Vasco UPV/EHU Manuel Lardizabal 3 20018 San Sebastián Spain
| | - Igor Iriarte
- Departamento de Química Orgánica IUniversidad del País Vasco UPV/EHU Manuel Lardizabal 3 20018 San Sebastián Spain
| | - Olatz Olaizola
- Departamento de Química Orgánica IUniversidad del País Vasco UPV/EHU Manuel Lardizabal 3 20018 San Sebastián Spain
| | - Julen Etxabe
- Departamento de Química Orgánica IUniversidad del País Vasco UPV/EHU Manuel Lardizabal 3 20018 San Sebastián Spain
| | - Antonia Mielgo
- Departamento de Química Orgánica IUniversidad del País Vasco UPV/EHU Manuel Lardizabal 3 20018 San Sebastián Spain
| | - Iñaki Ganboa
- Departamento de Química Orgánica IUniversidad del País Vasco UPV/EHU Manuel Lardizabal 3 20018 San Sebastián Spain
| | - José M. Odriozola
- Departamento de Química AplicadaInstitute for Advanced Materials (INAMAT)Universidad Pública de Navarra 31006 Pamplona Spain
| | - Jesús M. García
- Departamento de Química AplicadaInstitute for Advanced Materials (INAMAT)Universidad Pública de Navarra 31006 Pamplona Spain
| | - Mikel Oiarbide
- Departamento de Química Orgánica IUniversidad del País Vasco UPV/EHU Manuel Lardizabal 3 20018 San Sebastián Spain
| | - Claudio Palomo
- Departamento de Química Orgánica IUniversidad del País Vasco UPV/EHU Manuel Lardizabal 3 20018 San Sebastián Spain
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28
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Zhou L, Zeng Y, Gao X, Wang Q, Wang C, Wang B, Wang W, Wu Y, Zheng B, Guo H. A chiral squaramide-catalyzed asymmetric dearomative tandem annulation reaction through a kinetic resolution of MBH alcohols: highly enantioselective synthesis of three-dimensional heterocyclic compounds. Chem Commun (Camb) 2019; 55:10464-10467. [DOI: 10.1039/c9cc05483a] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
An asymmetric dearomative tandem annulation reaction of MBH alcohols via chiral squaramide catalysis.
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Affiliation(s)
- Leijie Zhou
- Department of Applied Chemistry
- China Agricultural University
- Beijing 100193
- China
| | - Yuan Zeng
- Department of Applied Chemistry
- China Agricultural University
- Beijing 100193
- China
| | - Xing Gao
- Department of Applied Chemistry
- China Agricultural University
- Beijing 100193
- China
| | - Qijun Wang
- Department of Applied Chemistry
- China Agricultural University
- Beijing 100193
- China
| | - Chang Wang
- Department of Applied Chemistry
- China Agricultural University
- Beijing 100193
- China
| | - Bo Wang
- Department of Applied Chemistry
- China Agricultural University
- Beijing 100193
- China
| | - Wei Wang
- College of Public Health
- Zhengzhou University
- Zhengzhou 450001
- China
| | - Yongjun Wu
- College of Public Health
- Zhengzhou University
- Zhengzhou 450001
- China
| | - Bing Zheng
- Department of Applied Chemistry
- China Agricultural University
- Beijing 100193
- China
| | - Hongchao Guo
- Department of Applied Chemistry
- China Agricultural University
- Beijing 100193
- China
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29
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Yang J, Sun W, He Z, Yu C, Bao G, Li Y, Liu Y, Hong L, Wang R. Access to α,γ-Diamino Diacid Derivatives via Organocatalytic Asymmetric 1,4-Addition of Azlactones and Dehydroalanines. Org Lett 2018; 20:7080-7084. [PMID: 30398880 DOI: 10.1021/acs.orglett.8b03020] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
A convenient and functional-group-tolerant organocatalytic asymmetric 1,4-addition of azlactones and dehydroalanine is disclosed. The reaction is used for the first synthesis of chiral α,γ-diamino diacid derivatives with nonadjacent stereogenic centers in moderate to high yields, with excellent diastereo- and enantioselectivities, under the catalysis of a chiral thiourea catalyst. In addition, the reaction could be conducted in gram-scale, and the products of the reaction could be readily converted to various α,γ-diamino diacid derivatives, α,γ-diamino dialcohols, and modified peptides with nonproteinogenic amino acid residues.
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Affiliation(s)
- Junxian Yang
- School of Life Sciences, Key Laboratory of Preclinical Study for New Drugs of Gansu Province, School of Basic Medical Sciences , Lanzhou University , Lanzhou 730000 , China
| | - Wangsheng Sun
- School of Life Sciences, Key Laboratory of Preclinical Study for New Drugs of Gansu Province, School of Basic Medical Sciences , Lanzhou University , Lanzhou 730000 , China
| | - Zeyuan He
- School of Life Sciences, Key Laboratory of Preclinical Study for New Drugs of Gansu Province, School of Basic Medical Sciences , Lanzhou University , Lanzhou 730000 , China
| | - Changjun Yu
- School of Life Sciences, Key Laboratory of Preclinical Study for New Drugs of Gansu Province, School of Basic Medical Sciences , Lanzhou University , Lanzhou 730000 , China
| | - Guangjun Bao
- School of Life Sciences, Key Laboratory of Preclinical Study for New Drugs of Gansu Province, School of Basic Medical Sciences , Lanzhou University , Lanzhou 730000 , China
| | - Yiping Li
- School of Life Sciences, Key Laboratory of Preclinical Study for New Drugs of Gansu Province, School of Basic Medical Sciences , Lanzhou University , Lanzhou 730000 , China
| | - Yuyang Liu
- School of Life Sciences, Key Laboratory of Preclinical Study for New Drugs of Gansu Province, School of Basic Medical Sciences , Lanzhou University , Lanzhou 730000 , China
| | - Liang Hong
- School of Pharmaceutical Sciences , Sun Yat-sen University , Guangzhou 510006 , China
| | - Rui Wang
- School of Life Sciences, Key Laboratory of Preclinical Study for New Drugs of Gansu Province, School of Basic Medical Sciences , Lanzhou University , Lanzhou 730000 , China
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30
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Teegardin KA, Gotcher L, Weaver JD. Formation of Non-Natural α,α-Disubstituted Amino Esters via Catalytic Michael Addition. Org Lett 2018; 20:7239-7244. [PMID: 30387616 DOI: 10.1021/acs.orglett.8b03161] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The enolate monoanion of amino esters is explored, and the first catalytic Michael addition of α-amino esters is demonstrated. These studies indicate that the acidity of the αC-H is the primary factor determining reactivity. Thus, polyfluorophenylglycine amino esters yield novel α-amino esters in the presence of a catalytic amount of a guanidine-derived base and Michael acceptors. Reactivity requires an acidic N-H, which is accomplished using common protecting groups such as N-Bz, N-Boc, and N-Cbz. Calculations and labeling experiments provide insight into the governing principles in which a key C-to-N proton transfer occurs, resulting in an expansion of the scope to include a number of natural amino esters. The study culminates with a late-stage functionalization of peptidic γ-secretase inhibitor, DAPT.
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Affiliation(s)
- Kip A Teegardin
- Department of Chemistry , Oklahoma State University , Stillwater , Oklahoma 74078 , United States
| | - Lacey Gotcher
- Department of Chemistry , Oklahoma State University , Stillwater , Oklahoma 74078 , United States
| | - Jimmie D Weaver
- Department of Chemistry , Oklahoma State University , Stillwater , Oklahoma 74078 , United States
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31
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Yu Z, Jin Z, Duan M, Bai R, Lu Y, Lan Y. Toward a Predictive Understanding of Phosphine-Catalyzed [3 + 2] Annulation of Allenoates with Acrylate or Imine. J Org Chem 2018; 83:9729-9740. [PMID: 30113828 DOI: 10.1021/acs.joc.8b01259] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Both theoretical and experimental studies were performed to explore the mechanism, regioselectivity, and enantioselectivity of phosphine-catalyzed [3 + 2] annulation between allenoates and acrylate or imine. Using density functional theory computations, we predicted that the enantioselective determining step is the nucleophilic addition of acrylate or imine to the catalyst-activated allenoate. In the key step, we proposed two hydrogen bonding interaction models (intermolecular H-bond model and intramolecular H-bond model). For acrylate substrates, the reaction proceeds via the intramolecular H-bond model and the strong noncovalent interactions between the 2-naphthyl ester moiety lead to the re-face attack pathway being more favorable. For imine substrates, the intermolecular H-bond model operates. In the annulation process, the bulky n-propyl oriented toward a crowded, sterically demanding environment plays a significant role in asymmetric induction. The theoretical calculation results agreed with experimental observations, and these results provide valuable insight into catalyst design and understanding of mechanisms of related reactions.
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Affiliation(s)
- Zhaoyuan Yu
- School of Chemistry and Chemical Engineering , Chongqing University , Chongqing 400030 , China.,Department of Chemistry , National University of Singapore , 3 Science Drive 3 , Singapore 117543 , Singapore
| | - Zhichao Jin
- Department of Chemistry , National University of Singapore , 3 Science Drive 3 , Singapore 117543 , Singapore
| | - Meng Duan
- School of Chemistry and Chemical Engineering , Chongqing University , Chongqing 400030 , China
| | - Ruopeng Bai
- School of Chemistry and Chemical Engineering , Chongqing University , Chongqing 400030 , China
| | - Yixin Lu
- Department of Chemistry , National University of Singapore , 3 Science Drive 3 , Singapore 117543 , Singapore
| | - Yu Lan
- College of Chemistry and Molecular Engineering , Zhengzhou University , Zhengzhou 450001 , China.,School of Chemistry and Chemical Engineering , Chongqing University , Chongqing 400030 , China
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32
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Pinheiro DL, Nielsen DU, Amarante GW, Skrydstrup T. Pd-catalyzed carbonylative α-arylation of azlactones: A formal four-component coupling route to α,α-disubstituted amino acids. J Catal 2018. [DOI: 10.1016/j.jcat.2018.04.027] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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33
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Borah AJ, Shi Z. Rhodium-Catalyzed, Remote Terminal Hydroarylation of Activated Olefins through a Long-Range Deconjugative Isomerization. J Am Chem Soc 2018; 140:6062-6066. [DOI: 10.1021/jacs.8b03560] [Citation(s) in RCA: 127] [Impact Index Per Article: 21.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Arun Jyoti Borah
- State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, China
| | - Zhuangzhi Shi
- State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, China
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34
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Vargová D, Baran R, Šebesta R. Investigations towards the stereoselective organocatalyzed Michael addition of dimethyl malonate to a racemic nitroalkene: possible route to the 4-methylpregabalin core structure. Beilstein J Org Chem 2018; 14:553-559. [PMID: 29623117 PMCID: PMC5852648 DOI: 10.3762/bjoc.14.42] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2017] [Accepted: 02/18/2018] [Indexed: 11/23/2022] Open
Abstract
Chiral derivatives of γ-aminobutyric acid are widely used as medicines and can be obtained by organocatalytic Michael additions. We show here the stereoselective synthesis of 4-methylpregabalin stereoisomers using a Michael addition of dimethyl malonate to a racemic nitroalkene. The key step of the synthesis operates as a kinetic resolution with a chiral squaramide catalyst. Furthermore, specific organocatalysts can provide respective stereoisomers of the key Michael adduct in up to 99:1 er.
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Affiliation(s)
- Denisa Vargová
- Department of Organic Chemistry, Faculty of Natural Sciences, Comenius University in Bratislava, Mlynská dolina, Ilkovičova 6, SK-842 15 Bratislava, Slovakia
| | - Rastislav Baran
- Department of Organic Chemistry, Faculty of Natural Sciences, Comenius University in Bratislava, Mlynská dolina, Ilkovičova 6, SK-842 15 Bratislava, Slovakia
| | - Radovan Šebesta
- Department of Organic Chemistry, Faculty of Natural Sciences, Comenius University in Bratislava, Mlynská dolina, Ilkovičova 6, SK-842 15 Bratislava, Slovakia
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35
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Zhang M, Yu C, Xie J, Xun X, Sun W, Hong L, Wang R. Phosphoric Acid Catalyzed Asymmetric [2+2] Cyclization/Penicillin-Penillonic Acid Rearrangement. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201712571] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Ming Zhang
- School of Pharmaceutical Sciences; Sun Yat-sen University; Guangzhou 510006 China
- Key Laboratory of Preclinical Study for New Drugs of Gansu Province; School of Basic Medical Sciences; Lanzhou University; Lanzhou 730000 China
| | - Changjun Yu
- Key Laboratory of Preclinical Study for New Drugs of Gansu Province; School of Basic Medical Sciences; Lanzhou University; Lanzhou 730000 China
| | - Junqiu Xie
- School of Pharmaceutical Sciences; Sun Yat-sen University; Guangzhou 510006 China
| | - Xudong Xun
- School of Pharmaceutical Sciences; Sun Yat-sen University; Guangzhou 510006 China
| | - Wangsheng Sun
- Key Laboratory of Preclinical Study for New Drugs of Gansu Province; School of Basic Medical Sciences; Lanzhou University; Lanzhou 730000 China
| | - Liang Hong
- School of Pharmaceutical Sciences; Sun Yat-sen University; Guangzhou 510006 China
| | - Rui Wang
- Key Laboratory of Preclinical Study for New Drugs of Gansu Province; School of Basic Medical Sciences; Lanzhou University; Lanzhou 730000 China
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36
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Zhang M, Yu C, Xie J, Xun X, Sun W, Hong L, Wang R. Phosphoric Acid Catalyzed Asymmetric [2+2] Cyclization/Penicillin-Penillonic Acid Rearrangement. Angew Chem Int Ed Engl 2018; 57:4921-4925. [DOI: 10.1002/anie.201712571] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2017] [Revised: 01/23/2018] [Indexed: 12/24/2022]
Affiliation(s)
- Ming Zhang
- School of Pharmaceutical Sciences; Sun Yat-sen University; Guangzhou 510006 China
- Key Laboratory of Preclinical Study for New Drugs of Gansu Province; School of Basic Medical Sciences; Lanzhou University; Lanzhou 730000 China
| | - Changjun Yu
- Key Laboratory of Preclinical Study for New Drugs of Gansu Province; School of Basic Medical Sciences; Lanzhou University; Lanzhou 730000 China
| | - Junqiu Xie
- School of Pharmaceutical Sciences; Sun Yat-sen University; Guangzhou 510006 China
| | - Xudong Xun
- School of Pharmaceutical Sciences; Sun Yat-sen University; Guangzhou 510006 China
| | - Wangsheng Sun
- Key Laboratory of Preclinical Study for New Drugs of Gansu Province; School of Basic Medical Sciences; Lanzhou University; Lanzhou 730000 China
| | - Liang Hong
- School of Pharmaceutical Sciences; Sun Yat-sen University; Guangzhou 510006 China
| | - Rui Wang
- Key Laboratory of Preclinical Study for New Drugs of Gansu Province; School of Basic Medical Sciences; Lanzhou University; Lanzhou 730000 China
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37
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Chen H, Ni M, Bao X, Wang C, Liu L, Chang W, Li J. The Diverse Reactivity of Homopropargylic Amines as “Masked” 1C Synthons for the Aza-Friedel-Crafts Alkylation of Indoles. European J Org Chem 2018. [DOI: 10.1002/ejoc.201701523] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Affiliation(s)
- Hao Chen
- The State Key Laboratory and Institute of Elemento-Organic Chemistry; College of Chemistry; Nankai University; Weijin Road 94# 300071 Tianjin China
| | - Min Ni
- School of Pharmacy; Nantong University; 226001 Nantong China
| | - Xiaofeng Bao
- School of Pharmacy; Nantong University; 226001 Nantong China
| | - Chan Wang
- The State Key Laboratory and Institute of Elemento-Organic Chemistry; College of Chemistry; Nankai University; Weijin Road 94# 300071 Tianjin China
| | - Lingyan Liu
- The State Key Laboratory and Institute of Elemento-Organic Chemistry; College of Chemistry; Nankai University; Weijin Road 94# 300071 Tianjin China
| | - Weixing Chang
- The State Key Laboratory and Institute of Elemento-Organic Chemistry; College of Chemistry; Nankai University; Weijin Road 94# 300071 Tianjin China
| | - Jing Li
- The State Key Laboratory and Institute of Elemento-Organic Chemistry; College of Chemistry; Nankai University; Weijin Road 94# 300071 Tianjin China
- Collaborative Innovation Center of Chemical Science and Engineering (Tianjin); 300071 Tianjin China
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38
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Chen G, Hu M, Peng Y. Switchable Synthesis of 3-Substituted 1H-Indazoles and 3,3-Disubstituted 3H-Indazole-3-phosphonates Tuned by Phosphoryl Groups. J Org Chem 2018; 83:1591-1597. [PMID: 29283256 DOI: 10.1021/acs.joc.7b02857] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
3-Alkyl/aryl-1H-indazoles and 3-alkyl/aryl-3H-indazole-3-phosphonates were synthesized efficiently through a 1,3-dipolar cycloaddition reaction between α-substituted α-diazomethylphosphonates and arynes under simple reaction conditions. The product distribution was controlled by the phosphoryl group, which acted both as a tuning group and a traceless group in the reaction.
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Affiliation(s)
- Guihua Chen
- Key Laboratory of Applied Chemistry of Chongqing Municipality, School of Chemistry and Chemical Engineering, Southwest University , Chongqing 400715, P. R. China
| | - Minglin Hu
- Key Laboratory of Applied Chemistry of Chongqing Municipality, School of Chemistry and Chemical Engineering, Southwest University , Chongqing 400715, P. R. China
| | - Yungui Peng
- Key Laboratory of Applied Chemistry of Chongqing Municipality, School of Chemistry and Chemical Engineering, Southwest University , Chongqing 400715, P. R. China
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39
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Zhu WR, Chen Q, Lin N, Chen KB, Zhang ZW, Fang G, Weng J, Lu G. Organocatalytic Michael/cyclization cascade reactions of 3-isothiocyanato oxindoles with 3-trifluoroethylidene oxindoles: an approach for the synthesis of 3′-trifluoromethyl substituted 3,2′-pyrrolidinyl-bispirooxindoles. Org Chem Front 2018. [DOI: 10.1039/c8qo00044a] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A series of 3′-trifluoromethyl substituted 3,2′-pyrrolidinyl-bispirooxindoles were constructed via an asymmetric Michael/cyclization cascade reaction.
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Affiliation(s)
- Wen-Run Zhu
- College of Pharmacy
- Guangxi University of Chinese Medicine
- Nanning
- P.R. China
| | - Qing Chen
- College of Pharmacy
- Guangxi University of Chinese Medicine
- Nanning
- P.R. China
- Guangxi Zhuang Yao Medicine Center of Engineering and Technology
| | - Ning Lin
- College of Pharmacy
- Guangxi University of Chinese Medicine
- Nanning
- P.R. China
- Guangxi Zhuang Yao Medicine Center of Engineering and Technology
| | - Kai-Bin Chen
- College of Pharmacy
- Guangxi University of Chinese Medicine
- Nanning
- P.R. China
| | - Zhen-Wei Zhang
- College of Pharmacy
- Guangxi University of Chinese Medicine
- Nanning
- P.R. China
| | - Gang Fang
- College of Pharmacy
- Guangxi University of Chinese Medicine
- Nanning
- P.R. China
| | - Jiang Weng
- Institute of Medicinal Chemistry
- School of Pharmaceutical Sciences
- Sun Yat-sen University
- Guangzhou
- P.R. China
| | - Gui Lu
- Institute of Medicinal Chemistry
- School of Pharmaceutical Sciences
- Sun Yat-sen University
- Guangzhou
- P.R. China
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40
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Laina-Martín V, del Río-Rodríguez R, Díaz-Tendero S, Fernández-Salas JA, Alemán J. Asymmetric synthesis of Rauhut–Currier-type esters via Mukaiyama–Michael reaction to acylphosphonates under bifunctional catalysis. Chem Commun (Camb) 2018; 54:13941-13944. [DOI: 10.1039/c8cc07561a] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A highly enantioselective organocatalytic Mukaiyama–Michael reaction of silyloxy dienes and α,β-unsaturated acyl phosphonates under bifunctional organocatalysis is presented.
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Affiliation(s)
- Víctor Laina-Martín
- Departamento de Química Orgánica (Módulo 1), Facultad de Ciencias, Universidad Autónoma de Madrid
- 28049-Madrid
- Spain
| | - Roberto del Río-Rodríguez
- Departamento de Química Orgánica (Módulo 1), Facultad de Ciencias, Universidad Autónoma de Madrid
- 28049-Madrid
- Spain
| | - Sergio Díaz-Tendero
- Institute for Advanced Research in Chemical Sciences (IAdChem), Universidad Autónoma de Madrid
- 28049 Madrid
- Spain
- Condensed Matter Physics Center (IFIMAC), Facultad de Ciencias, Universidad Autónoma de Madrid
- 28049 Madrid
| | - Jose A. Fernández-Salas
- Departamento de Química Orgánica (Módulo 1), Facultad de Ciencias, Universidad Autónoma de Madrid
- 28049-Madrid
- Spain
| | - José Alemán
- Departamento de Química Orgánica (Módulo 1), Facultad de Ciencias, Universidad Autónoma de Madrid
- 28049-Madrid
- Spain
- Institute for Advanced Research in Chemical Sciences (IAdChem), Universidad Autónoma de Madrid
- 28049 Madrid
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41
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Del Pozo S, Vera S, Oiarbide M, Palomo C. Catalytic Asymmetric Synthesis of Quaternary Barbituric Acids. J Am Chem Soc 2017; 139:15308-15311. [PMID: 29023111 DOI: 10.1021/jacs.7b09124] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
The catalytic asymmetric α-functionalization of prochiral barbituric acids, a subtype of pseudosymmetric 1,3-diamides, to yield the corresponding 5,5-disubstituted (quaternary) derivatives remains essentially unsolved. In this study 2-alkylthio-4,6-dioxopirimidines are designed as key 1,3-diamide surrogates that perform exceedingly in amine-squaramide catalyzed C-C bond forming reactions with vinyl ketones or Morita-Baylis-Hillmann-type allyl bromides as electrophiles. Mild acid hydrolysis of adducts affords barbituric acid derivatives with an in-ring quaternary carbon in unprecedented enantioselectivity, offering valuable materials for biological evaluations.
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Affiliation(s)
- Sandra Del Pozo
- Departamento de Química Orgánica I, Universidad del País Vasco , Manuel de Lardizabal 3, 2018 San Sebastián, Spain
| | - Silvia Vera
- Departamento de Química Orgánica I, Universidad del País Vasco , Manuel de Lardizabal 3, 2018 San Sebastián, Spain
| | - Mikel Oiarbide
- Departamento de Química Orgánica I, Universidad del País Vasco , Manuel de Lardizabal 3, 2018 San Sebastián, Spain
| | - Claudio Palomo
- Departamento de Química Orgánica I, Universidad del País Vasco , Manuel de Lardizabal 3, 2018 San Sebastián, Spain
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42
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Xie L, Bai H, Li J, Yu X, Zhang Z, Fu B. Cu(II)-catalyzed enantioselective 1,3-dipolar cycloaddition of nitrones with α, β-unsaturated acyl phosphonates. Tetrahedron 2017. [DOI: 10.1016/j.tet.2017.03.086] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
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43
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Li Y, He CQ, Gao FX, Li Z, Xue XS, Li X, Houk KN, Cheng JP. Design and Applications of N-tert-Butyl Sulfinyl Squaramide Catalysts. Org Lett 2017; 19:1926-1929. [DOI: 10.1021/acs.orglett.7b00727] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Affiliation(s)
- Yao Li
- State key Laboratory
of Elemento-Organic Chemistry, College of Chemistry, Collaborative
Innovation Center of Chemical Science and Engineering, Nankai University, Tianjin 300071, China
| | - Cyndi Qixin He
- Department of Chemistry and Biochemistry, University of California, Los
Angeles, California 90095, United States
| | - Fei-Xiang Gao
- State key Laboratory
of Elemento-Organic Chemistry, College of Chemistry, Collaborative
Innovation Center of Chemical Science and Engineering, Nankai University, Tianjin 300071, China
| | - Zhen Li
- State key Laboratory
of Elemento-Organic Chemistry, College of Chemistry, Collaborative
Innovation Center of Chemical Science and Engineering, Nankai University, Tianjin 300071, China
| | - Xiao-Song Xue
- State key Laboratory
of Elemento-Organic Chemistry, College of Chemistry, Collaborative
Innovation Center of Chemical Science and Engineering, Nankai University, Tianjin 300071, China
| | - Xin Li
- State key Laboratory
of Elemento-Organic Chemistry, College of Chemistry, Collaborative
Innovation Center of Chemical Science and Engineering, Nankai University, Tianjin 300071, China
| | - K. N. Houk
- Department of Chemistry and Biochemistry, University of California, Los
Angeles, California 90095, United States
| | - Jin-Pei Cheng
- State key Laboratory
of Elemento-Organic Chemistry, College of Chemistry, Collaborative
Innovation Center of Chemical Science and Engineering, Nankai University, Tianjin 300071, China
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44
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Zhao B, Li J, Du D. Squaramide‐Catalyzed Asymmetric Reactions. CHEM REC 2017; 17:994-1018. [DOI: 10.1002/tcr.201600140] [Citation(s) in RCA: 71] [Impact Index Per Article: 10.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2016] [Accepted: 02/27/2017] [Indexed: 01/10/2023]
Affiliation(s)
- Bo‐Liang Zhao
- School of Chemistry and Chemical EngineeringBeijing Institute of Technology 5 South Zhongguancun Street Beijing 100081 People's Republic of China
| | - Jun‐Hua Li
- School of Chemistry and Chemical EngineeringBeijing Institute of Technology 5 South Zhongguancun Street Beijing 100081 People's Republic of China
| | - Da‐Ming Du
- School of Chemistry and Chemical EngineeringBeijing Institute of Technology 5 South Zhongguancun Street Beijing 100081 People's Republic of China
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45
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Guo J, Lin ZH, Chen KB, Xie Y, Chan ASC, Weng J, Lu G. Asymmetric amination of 2-substituted indolin-3-ones catalyzed by natural cinchona alkaloids. Org Chem Front 2017. [DOI: 10.1039/c7qo00129k] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The natural quinine-catalyzed enantioselective amination of 2-substituted indolin-3-ones with azodicarboxylates has been developed.
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Affiliation(s)
- Jing Guo
- Institute of Medicinal Chemistry
- School of Pharmaceutical Sciences
- Sun Yat-sen University
- Guangzhou 510006
- China
| | - Zi-Hui Lin
- Institute of Medicinal Chemistry
- School of Pharmaceutical Sciences
- Sun Yat-sen University
- Guangzhou 510006
- China
| | - Kai-Bin Chen
- Institute of Medicinal Chemistry
- School of Pharmaceutical Sciences
- Sun Yat-sen University
- Guangzhou 510006
- China
| | - Ying Xie
- Institute of Medicinal Chemistry
- School of Pharmaceutical Sciences
- Sun Yat-sen University
- Guangzhou 510006
- China
| | - Albert S. C. Chan
- Institute of Medicinal Chemistry
- School of Pharmaceutical Sciences
- Sun Yat-sen University
- Guangzhou 510006
- China
| | - Jiang Weng
- Institute of Medicinal Chemistry
- School of Pharmaceutical Sciences
- Sun Yat-sen University
- Guangzhou 510006
- China
| | - Gui Lu
- Institute of Medicinal Chemistry
- School of Pharmaceutical Sciences
- Sun Yat-sen University
- Guangzhou 510006
- China
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46
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Huang WJ, Chen Q, Lin N, Long XW, Pan WG, Xiong YS, Weng J, Lu G. Asymmetric synthesis of trifluoromethyl-substituted 3,3′-pyrrolidinyl-dispirooxindoles through organocatalytic 1,3-dipolar cycloaddition reactions. Org Chem Front 2017. [DOI: 10.1039/c6qo00723f] [Citation(s) in RCA: 64] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
A series of trifluoromethylated 3,3′-pyrrolidinyl-dispirooxindoles were constructedviaasymmetric [3 + 2] cycloaddition.
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Affiliation(s)
- Wei-Jie Huang
- Institute of Medicinal Chemistry
- School of Pharmaceutical Sciences
- Sun Yat-sen University
- Guangzhou 510006
- China
| | - Qing Chen
- College of Pharmacy
- Guangxi University of Chinese Medicine
- Nanning 530200
- People's Republic of China
- Guangxi Zhuang Yao Medicine Center of Engineering and Technology
| | - Ning Lin
- College of Pharmacy
- Guangxi University of Chinese Medicine
- Nanning 530200
- People's Republic of China
- Guangxi Zhuang Yao Medicine Center of Engineering and Technology
| | - Xian-Wen Long
- Institute of Medicinal Chemistry
- School of Pharmaceutical Sciences
- Sun Yat-sen University
- Guangzhou 510006
- China
| | - Wei-Gao Pan
- College of Pharmacy
- Guangxi University of Chinese Medicine
- Nanning 530200
- People's Republic of China
| | - Yan-Shi Xiong
- Institute of Medicinal Chemistry
- School of Pharmaceutical Sciences
- Sun Yat-sen University
- Guangzhou 510006
- China
| | - Jiang Weng
- Institute of Medicinal Chemistry
- School of Pharmaceutical Sciences
- Sun Yat-sen University
- Guangzhou 510006
- China
| | - Gui Lu
- Institute of Medicinal Chemistry
- School of Pharmaceutical Sciences
- Sun Yat-sen University
- Guangzhou 510006
- China
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47
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48
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Zhang ML, Wu ZJ, Zhao JQ, Luo Y, Xu XY, Zhang XM, Yuan WC. Michael Addition–Lactonization of Arylacetyl Phosphonate to β,γ-Unsaturated α-Keto Esters for the Synthesis of Chiral syn-3,4-Dihydropyranones and 5,6-Dihydropyranones. Org Lett 2016; 18:5110-5113. [DOI: 10.1021/acs.orglett.6b02558] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Ming-Liang Zhang
- University of Chinese Academy of Sciences, Beijing 100049, China
| | | | - Jian-Qiang Zhao
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Yuan Luo
- University of Chinese Academy of Sciences, Beijing 100049, China
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49
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Zhang K, An J, Su Y, Zhang J, Wang Z, Cheng T, Liu G. Amphiphilic Hyperbranched Polyethoxysiloxane: A Self-Templating Assembled Platform to Fabricate Functionalized Mesostructured Silicas for Aqueous Enantioselective Reactions. ACS Catal 2016. [DOI: 10.1021/acscatal.6b01315] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Kun Zhang
- Key Laboratory
of Resource
Chemistry of Ministry of Education, Shanghai Key Laboratory of Rare
Earth Functional Materials, Shanghai Normal University, Shanghai 200234, China
| | - Juzeng An
- Key Laboratory
of Resource
Chemistry of Ministry of Education, Shanghai Key Laboratory of Rare
Earth Functional Materials, Shanghai Normal University, Shanghai 200234, China
| | - Yanchao Su
- Key Laboratory
of Resource
Chemistry of Ministry of Education, Shanghai Key Laboratory of Rare
Earth Functional Materials, Shanghai Normal University, Shanghai 200234, China
| | - Jueyu Zhang
- Key Laboratory
of Resource
Chemistry of Ministry of Education, Shanghai Key Laboratory of Rare
Earth Functional Materials, Shanghai Normal University, Shanghai 200234, China
| | - Ziyun Wang
- Key Laboratory
of Resource
Chemistry of Ministry of Education, Shanghai Key Laboratory of Rare
Earth Functional Materials, Shanghai Normal University, Shanghai 200234, China
| | - Tanyu Cheng
- Key Laboratory
of Resource
Chemistry of Ministry of Education, Shanghai Key Laboratory of Rare
Earth Functional Materials, Shanghai Normal University, Shanghai 200234, China
| | - Guohua Liu
- Key Laboratory
of Resource
Chemistry of Ministry of Education, Shanghai Key Laboratory of Rare
Earth Functional Materials, Shanghai Normal University, Shanghai 200234, China
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50
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Govender T, Arvidsson PI, Maguire GEM, Kruger HG, Naicker T. Enantioselective Organocatalyzed Transformations of β-Ketoesters. Chem Rev 2016; 116:9375-437. [PMID: 27463615 DOI: 10.1021/acs.chemrev.6b00156] [Citation(s) in RCA: 94] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The β-ketoester structural motif continues to intrigue chemists with its electrophilic and nucleophilic sites. Proven to be a valuable tool within organic synthesis, natural product, and medicinal chemistry, reports on chiral β-ketoester molecular skeletons display a steady increase. With the reignition of organocatalysis in the past decade, asymmetric methods available for the synthesis of this structural unit has significantly expanded, making it one of the most exploited substrates for organocatalytic transformations. This review provides comprehensive information on the plethora of organocatalysts used in stereoselective organocatalyzed construction of β-ketoester-containing compounds.
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Affiliation(s)
- Thavendran Govender
- Catalysis and Peptide Research Unit, University of KwaZulu Natal , Durban, 4001, South Africa
| | - Per I Arvidsson
- Catalysis and Peptide Research Unit, University of KwaZulu Natal , Durban, 4001, South Africa.,P. I. Arvidsson, Science for Life Laboratory, Drug Discovery and Development Platform and Division of Translational Medicine and Chemical Biology, Department of Medical Biochemistry and Biophysics, Karolinska Institutet SE-171 77 Stockholm, Sweden
| | - Glenn E M Maguire
- Catalysis and Peptide Research Unit, University of KwaZulu Natal , Durban, 4001, South Africa
| | - Hendrik G Kruger
- Catalysis and Peptide Research Unit, University of KwaZulu Natal , Durban, 4001, South Africa
| | - Tricia Naicker
- Catalysis and Peptide Research Unit, University of KwaZulu Natal , Durban, 4001, South Africa
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