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La-Ongthong K, Chantarojsiri T, Soorukram D, Leowanawat P, Reutrakul V, Kuhakarn C. Electro-oxidative Methylation of 2-Isocyanobiaryls Using N,N-dimethylformamide (DMF) as Carbon Source: Synthesis of 6-Methylphenanthridines. Chem Asian J 2024; 19:e202400176. [PMID: 38489229 DOI: 10.1002/asia.202400176] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2024] [Revised: 03/14/2024] [Accepted: 03/14/2024] [Indexed: 03/17/2024]
Abstract
A benign electrochemical method to access 6-methylphenanthridines from 2-isocyanobiaryls using N,N-dimethylformamide (DMF) as a methyl source is reported. The protocol operates at ambient temperature without the need for harmful methylating reagents. Mechanistic studies suggested that DMF delivered a methylene synthon, followed by reduction at the cathode and tautomerization. The method offers environmental benefits by avoiding metal-based reagents and harsh conditions.
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Affiliation(s)
- Kannika La-Ongthong
- Department of Chemistry, Faculty of Science, Mahidol University, Rama VI Road, Bangkok, 10400, Thailand
- Center of Excellence for Innovation in Chemistry (PERCH-CIC), Faculty of Science, Mahidol University, Rama VI Road, Bangkok, 10400, Thailand
| | - Teera Chantarojsiri
- Department of Chemistry, Faculty of Science, Mahidol University, Rama VI Road, Bangkok, 10400, Thailand
- Center of Excellence for Innovation in Chemistry (PERCH-CIC), Faculty of Science, Mahidol University, Rama VI Road, Bangkok, 10400, Thailand
| | - Darunee Soorukram
- Department of Chemistry, Faculty of Science, Mahidol University, Rama VI Road, Bangkok, 10400, Thailand
- Center of Excellence for Innovation in Chemistry (PERCH-CIC), Faculty of Science, Mahidol University, Rama VI Road, Bangkok, 10400, Thailand
| | - Pawaret Leowanawat
- Department of Chemistry, Faculty of Science, Mahidol University, Rama VI Road, Bangkok, 10400, Thailand
- Center of Excellence for Innovation in Chemistry (PERCH-CIC), Faculty of Science, Mahidol University, Rama VI Road, Bangkok, 10400, Thailand
| | - Vichai Reutrakul
- Department of Chemistry, Faculty of Science, Mahidol University, Rama VI Road, Bangkok, 10400, Thailand
- Center of Excellence for Innovation in Chemistry (PERCH-CIC), Faculty of Science, Mahidol University, Rama VI Road, Bangkok, 10400, Thailand
| | - Chutima Kuhakarn
- Department of Chemistry, Faculty of Science, Mahidol University, Rama VI Road, Bangkok, 10400, Thailand
- Center of Excellence for Innovation in Chemistry (PERCH-CIC), Faculty of Science, Mahidol University, Rama VI Road, Bangkok, 10400, Thailand
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2
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Westawker LP, Khusnutdinova JK, Wallick RF, Mirica LM. Palladium K-edge X-ray Absorption Spectroscopy Studies on Controlled Ligand Systems. Inorg Chem 2023; 62:21128-21137. [PMID: 38039413 DOI: 10.1021/acs.inorgchem.3c03032] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/03/2023]
Abstract
X-ray absorption spectroscopy (XAS) is widely used across the life and physical sciences to identify the electronic properties and structure surrounding a specific element. XAS is less often used for the characterization of organometallic compounds, especially for sensitive and highly reactive species. In this study, we used solid- and solution-phase XAS to compare a series of 25 palladium complexes in controlled ligand environments. The compounds include palladium centers in the formal I, II, III, and IV oxidation states, supported by tridentate and tetradentate macrocyclic ligands, with different halide and methyl ligand combinations. The Pd K-edge energies increased not only upon oxidizing the metal center but also upon increasing the denticity of the ligand framework, substituting sigma-donating methyl groups with chlorides, and increasing the charge of the overall metal complex by replacing charged ligands with neutral ligands. These trends were then applied to characterize compounds whose oxidation states were otherwise unconfirmed.
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Affiliation(s)
- Luke P Westawker
- Department of Chemistry, University of Illinois at Urbana-Champaign, 600 S. Mathews Avenue, Urbana, Illinois 61801, United States
| | - Julia K Khusnutdinova
- Coordination Chemistry and Catalysis Unit, Okinawa Institute of Science and Technology Graduate University, 1919-1 Tancha, Onna-son, Okinawa 904-0495, Japan
| | - Rachel F Wallick
- Department of Chemistry, University of Illinois at Urbana-Champaign, 600 S. Mathews Avenue, Urbana, Illinois 61801, United States
| | - Liviu M Mirica
- Department of Chemistry, University of Illinois at Urbana-Champaign, 600 S. Mathews Avenue, Urbana, Illinois 61801, United States
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3
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Sinha SK, Ghosh P, Jain S, Maiti S, Al-Thabati SA, Alshehri AA, Mokhtar M, Maiti D. Transition-metal catalyzed C-H activation as a means of synthesizing complex natural products. Chem Soc Rev 2023; 52:7461-7503. [PMID: 37811747 DOI: 10.1039/d3cs00282a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/10/2023]
Abstract
Over the past few decades, the advent of C-H activation has led to a rethink among chemists about the synthetic strategies employed for multi-step transformations. Indeed, deploying innovative and masterful tricks against the numerous classical organic transformations has been the need of the hour. Despite this, the immense importance of C-H activation remains unfulfilled unless the methodology can be deployed for large-scale industrial processes and towards the concise, step-economic synthesis of prodigious natural products and pharmaceutical drugs. Lately, the growing potential of C-H activation methodology has indeed driven the pioneers of synthetic organic chemists into finding more efficient methods to accelerate the synthesis of such complex molecular scaffolds. This review aims to draw a general overview of the various C-H activation procedures that have been adopted for synthesizing these vast majority of structurally complicated natural products. Our objective lies in drawing a complete picture and taking the readers through the synthesis of a series of such complex organic compounds by simplified techniques, making it step-economic on a larger scale and thus instigating the readers to trigger the use of such methodology and uncover new, unique patterns for future synthesis of such natural products.
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Affiliation(s)
- Soumya Kumar Sinha
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai-400076, India.
| | - Pintu Ghosh
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai-400076, India.
| | - Shubhanshu Jain
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai-400076, India.
| | - Siddhartha Maiti
- School of Biosciences, Engineering and Technology, VIT Bhopal University, Kothrikalan, Sehore, Madhya Pradesh - 466114, India
| | - Shaeel A Al-Thabati
- Department of Chemistry, Faculty of Science, King Abdulaziz University, P.O. Box 80203, Jeddah, 21589, Saudi Arabia
| | - Abdulmohsen Ali Alshehri
- Department of Chemistry, Faculty of Science, King Abdulaziz University, P.O. Box 80203, Jeddah, 21589, Saudi Arabia
| | - Mohamed Mokhtar
- Department of Chemistry, Faculty of Science, King Abdulaziz University, P.O. Box 80203, Jeddah, 21589, Saudi Arabia
| | - Debabrata Maiti
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai-400076, India.
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4
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Murtaza A, Ulhaq Z, Shirinfar B, Rani S, Aslam S, Martins GM, Ahmed N. Arenes and Heteroarenes C-H Functionalization Under Enabling Conditions: Electrochemistry, Photoelectrochemistry & Flow Technology. CHEM REC 2023; 23:e202300119. [PMID: 37255348 DOI: 10.1002/tcr.202300119] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2023] [Revised: 05/18/2023] [Indexed: 06/01/2023]
Abstract
C-H bond functionalization generates molecular complexity in single-step transformation. However, the activation of C-H bonds requires expensive metals or stoichiometric amounts of oxidizing/reducing species. In many cases, they often require pre-functionalization of starting molecules. Such pre-activating measures cause waste generation and their separation from the final product is also troublesome. In such a scenario, reactions activating elements generating from renewable energy resources such as electricity and light would be more efficient, green, and cost-effective. Further, incorporation of growing flow technology in chemical transformation processes will accelerate the safer accesses of valuable products. Arenes & heteroarenes are ubiquitous in pharmaceuticals, natural products, medicinal compounds, and other biologically important molecules. Herein, we discussed enabling tools and technologies used for the recent C-H bonds functionalization of arenes and heteroarenes.
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Affiliation(s)
- Ayesha Murtaza
- Department of Chemistry, Khwaja Fareed University of Engineering and Information Technology, Rahim Yar Khan, 64200, Pakistan
| | - Zia Ulhaq
- Chemical Engineering Department, Khwaja Fareed University of Engineering and Information Technology, Rahim Yar Khan, 64200, Pakistan
| | - Bahareh Shirinfar
- Department of Chemistry, University of Bath, BA2 7AY, Bath, United Kingdom
- West Herts College, Hertfordshire, Watford, WD17 3EZ, London, United Kingdom
| | - Sadia Rani
- Department of Chemistry, The Women University Multan, Multan, 60000, Pakistan
| | - Samina Aslam
- Department of Chemistry, The Women University Multan, Multan, 60000, Pakistan
| | - Guilherme M Martins
- Department of Chemistry, Federal University of Sao Carlos - UFS Car, 13565-905, São Carlos -SP, Brazil
- School of Chemistry, Cardiff University, Main Building Park Place, Cardiff, CF10 3AT, United Kingdom
| | - Nisar Ahmed
- School of Chemistry, Cardiff University, Main Building Park Place, Cardiff, CF10 3AT, United Kingdom
- Centre for Chemical and Biological Sciences, HEJ Research Institute of Chemistry, University of Karachi, Karachi, 75270, Pakistan
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5
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Docherty JH, Lister TM, Mcarthur G, Findlay MT, Domingo-Legarda P, Kenyon J, Choudhary S, Larrosa I. Transition-Metal-Catalyzed C-H Bond Activation for the Formation of C-C Bonds in Complex Molecules. Chem Rev 2023. [PMID: 37163671 DOI: 10.1021/acs.chemrev.2c00888] [Citation(s) in RCA: 21] [Impact Index Per Article: 21.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/12/2023]
Abstract
Site-predictable and chemoselective C-H bond functionalization reactions offer synthetically powerful strategies for the step-economic diversification of both feedstock and fine chemicals. Many transition-metal-catalyzed methods have emerged for the selective activation and functionalization of C-H bonds. However, challenges of regio- and chemoselectivity have emerged with application to highly complex molecules bearing significant functional group density and diversity. As molecular complexity increases within molecular structures the risks of catalyst intolerance and limited applicability grow with the number of functional groups and potentially Lewis basic heteroatoms. Given the abundance of C-H bonds within highly complex and already diversified molecules such as pharmaceuticals, natural products, and materials, design and selection of reaction conditions and tolerant catalysts has proved critical for successful direct functionalization. As such, innovations within transition-metal-catalyzed C-H bond functionalization for the direct formation of carbon-carbon bonds have been discovered and developed to overcome these challenges and limitations. This review highlights progress made for the direct metal-catalyzed C-C bond forming reactions including alkylation, methylation, arylation, and olefination of C-H bonds within complex targets.
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Affiliation(s)
- Jamie H Docherty
- School of Chemistry, University of Manchester, Oxford Road, Manchester M13 9PL, United Kingdom
| | - Thomas M Lister
- School of Chemistry, University of Manchester, Oxford Road, Manchester M13 9PL, United Kingdom
| | - Gillian Mcarthur
- School of Chemistry, University of Manchester, Oxford Road, Manchester M13 9PL, United Kingdom
| | - Michael T Findlay
- School of Chemistry, University of Manchester, Oxford Road, Manchester M13 9PL, United Kingdom
| | - Pablo Domingo-Legarda
- School of Chemistry, University of Manchester, Oxford Road, Manchester M13 9PL, United Kingdom
| | - Jacob Kenyon
- School of Chemistry, University of Manchester, Oxford Road, Manchester M13 9PL, United Kingdom
| | - Shweta Choudhary
- School of Chemistry, University of Manchester, Oxford Road, Manchester M13 9PL, United Kingdom
| | - Igor Larrosa
- School of Chemistry, University of Manchester, Oxford Road, Manchester M13 9PL, United Kingdom
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6
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Mao Y, Li J, Tang C, Ma B, Xu Z, Ke C, Feng L, Zhang H, Yao S, Dai HX, Ye Y. Fused-ring α-pyrones from intramolecular C–H activation and their lipids-lowering activity associated with LXR-IDOL-LDLR axis regulation. Eur J Med Chem 2022; 244:114866. [DOI: 10.1016/j.ejmech.2022.114866] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2022] [Revised: 10/09/2022] [Accepted: 10/18/2022] [Indexed: 11/26/2022]
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7
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Rh(III)-catalyzed twofold unsymmetrical C H alkenylation-annulation/amidation reaction enabled delivery of diverse furoquinazolinones. Tetrahedron Lett 2022. [DOI: 10.1016/j.tetlet.2022.154141] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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8
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Dutta S, Bhattacharya T, Geffers FJ, Bürger M, Maiti D, Werz DB. Pd-catalysed C-H functionalisation of free carboxylic acids. Chem Sci 2022; 13:2551-2573. [PMID: 35340865 PMCID: PMC8890104 DOI: 10.1039/d1sc05392b] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2021] [Accepted: 01/07/2022] [Indexed: 11/21/2022] Open
Abstract
Pd-catalysed C-H functionalisation of free carboxylic acids has drawn significant attention over the last few years due to the predominance of carboxylic acid moieties in pharmaceuticals and agrochemicals. But their coordinating ability was overlooked and masked by exogenous directing groups for a long time. Even other crucial roles of carboxylic acids as additives and steric inducers that directly influence the mode of a reaction have been widely neglected. This review aims to embrace all of the diverse aspects of carboxylic acids except additive and steric effects by concisely and systematically describing their versatile role in Pd-catalysed proximal and distal C-H activation reactions that could be implemented in the pharmaceutical and agrochemical industries. In addition, the mechanistic perspectives along with several recent strategies developed in the last few years discussed here will serve as educational resources for future research.
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Affiliation(s)
- Suparna Dutta
- Department of Chemistry, Indian Institute of Technology Bombay Powai Mumbai 400076 India https://www.dmaiti.com
| | - Trisha Bhattacharya
- Department of Chemistry, Indian Institute of Technology Bombay Powai Mumbai 400076 India https://www.dmaiti.com
| | - Finn J Geffers
- Technische Universität Braunschweig, Institute of Organic Chemistry Hagenring 30 38106 Braunschweig Germany https://www.werzlab.de
| | - Marcel Bürger
- Technische Universität Braunschweig, Institute of Organic Chemistry Hagenring 30 38106 Braunschweig Germany https://www.werzlab.de
| | - Debabrata Maiti
- Department of Chemistry, Indian Institute of Technology Bombay Powai Mumbai 400076 India https://www.dmaiti.com
| | - Daniel B Werz
- Technische Universität Braunschweig, Institute of Organic Chemistry Hagenring 30 38106 Braunschweig Germany https://www.werzlab.de
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9
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Yang X, Wang G, Ye ZS. Palladium-catalyzed nucleomethylation of alkynes for synthesis of methylated heteroaromatic compounds. Chem Sci 2022; 13:10095-10102. [PMID: 36128232 PMCID: PMC9430495 DOI: 10.1039/d2sc03294e] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2022] [Accepted: 08/09/2022] [Indexed: 11/29/2022] Open
Abstract
Herein, we disclosed a novel and efficient palladium-catalyzed nucleomethylation of alkynes for the simultaneous construction of the heteroaromatic ring and methyl group. The 3-methylindoles, 3-methylbenzofurans and 4-methylisoquinolines were obtained in moderate to excellent yields. Notably, this methodology was employed as a key step for synthesis of a pregnane X receptor antagonist, zindoxifene, bazedoxifene and AFN-1252. The kinetic studies revealed that reductive elimination might be the rate-determining step. A novel palladium-catalyzed nucleomethylation of alkynes is developed, affording 3-methylindoles, 3-methylbenzofurans and 4-methylisoquinolines in moderate to excellent yields.![]()
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Affiliation(s)
- Xi Yang
- Zhang Dayu School of Chemistry, Dalian University of Technology, Dalian 116024, P. R. China
| | - Gang Wang
- Zhang Dayu School of Chemistry, Dalian University of Technology, Dalian 116024, P. R. China
| | - Zhi-Shi Ye
- Zhang Dayu School of Chemistry, Dalian University of Technology, Dalian 116024, P. R. China
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10
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Abstract
Natural products have significant biological properties that arise from their fascinating molecular architectures. Despite many advances in synthetic method development, the efficient synthesis of highly-functionalized and structurally intricate natural products...
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11
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Jana R, Begam HM, Dinda E. The emergence of the C-H functionalization strategy in medicinal chemistry and drug discovery. Chem Commun (Camb) 2021; 57:10842-10866. [PMID: 34596175 DOI: 10.1039/d1cc04083a] [Citation(s) in RCA: 37] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Owing to the market competitiveness and urgent societal need, an optimum speed of drug discovery is an important criterion for successful implementation. Despite the rapid ascent of artificial intelligence and computational and bioanalytical techniques to accelerate drug discovery in big pharma, organic synthesis of privileged scaffolds predicted in silico for in vitro and in vivo studies is still considered as the rate-limiting step. C-H activation is the latest technology added into an organic chemist's toolbox for the rapid construction and late-stage modification of functional molecules to achieve the desired chemical and physical properties. Particularly, elimination of prefunctionalization steps, exceptional functional group tolerance, complexity-to-diversity oriented synthesis, and late-stage functionalization of privileged medicinal scaffolds expand the chemical space. It has immense potential for the rapid synthesis of a library of molecules, structural modification to achieve the required pharmacological properties such as absorption, distribution, metabolism, excretion, toxicology (ADMET) and attachment of chemical reporters for proteome profiling, metabolite synthesis, etc. for preclinical studies. Although heterocycle synthesis, late-stage drug modification, 18F labelling, methylation, etc. via C-H functionalization have been reviewed from the synthetic standpoint, a general overview of these protocols from medicinal and drug discovery aspects has not been reviewed. In this feature article, we will discuss the recent trends of C-H activation methodologies such as synthesis of medicinal scaffolds through C-H activation/annulation cascade; C-H arylation for sp2-sp2 and sp2-sp3 cross-coupling; C-H borylation/silylation to introduce a functional linchpin for further manipulation; C-H amination for N-heterocycles and hydrogen bond acceptors; C-H fluorination/fluoroalkylation to tune polarity and lipophilicity; C-H methylation: methyl magic in drug discovery; peptide modification and macrocyclization for therapeutics and biologics; fluorescent labelling and radiolabelling for bioimaging; bioconjugation for chemical biology studies; drug-metabolite synthesis for biodistribution and excretion studies; late-stage diversification of drug-molecules to increase efficacy and safety; cutting-edge DNA encoded library synthesis and improved synthesis of drug molecules via C-H activation in medicinal chemistry and drug discovery.
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Affiliation(s)
- Ranjan Jana
- Organic and Medicinal Chemistry Division, CSIR-Indian Institute of Chemical Biology, 4 Raja S. C. Mullick Road, Kolkata-700032, India.
| | - Hasina Mamataj Begam
- Organic and Medicinal Chemistry Division, CSIR-Indian Institute of Chemical Biology, 4 Raja S. C. Mullick Road, Kolkata-700032, India.
| | - Enakshi Dinda
- Department of Chemistry and Environment, Heritage Institute of Technology, Kolkata-700107, India
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12
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Wang X, Hu N, Kong W, Song B, Li S. Facile and divergent optimization of chromazonarol enabled the identification of simplified drimane meroterpenoids as novel pharmaceutical leads. Eur J Med Chem 2021; 227:113912. [PMID: 34653771 DOI: 10.1016/j.ejmech.2021.113912] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2021] [Revised: 10/06/2021] [Accepted: 10/07/2021] [Indexed: 12/22/2022]
Abstract
The diversity of drimane hydroquinones was significantly expanded by the facile construction of (+)-chromazonarol relevant natural products, isomers, and analogues for the discovery of new pharmaceutical leads. The structure-activity relationship of (+)-chromazonarol relevant (non)-natural products was delineated via the synergistic interaction of the programmable synthesis and bioactivity-guided screening. The first divergent derivatization of (+)-chromazonarol demonstrated that the phenolic hydroxyl group is one inviolable requirement for antifungal effect. Pinpoint modification of (+)-yahazunol manifested the position of hydroxyl group was crucial for both antifungal and antitumor activities. (+)-Albaconol, (+)-neoalbaconol, and two (+)-yahazunol isomers (24 and 25) proved to be the novel pharmaceutical leads. The probable macromolecular targets were estimated to deliver new information about the biological potentials resident in (+)-yahazunol relevant products. This work also featured the first synthesis of (+)-albaconol and (+)-neoalbaconol, the first biological exploration of (+)-dictyvaric acid and improved preparation of (+)-8-epi-puupehedione and a promising pelorol analogue.
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Affiliation(s)
- Xia Wang
- Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Guizhou University, Huaxi District, Guiyang, 550025, China; Department of Pesticide Science, College of Plant Protection, Nanjing Agricultural University, Weigang 1, Xuanwu District, Nanjing, 210095, China
| | - Nvdan Hu
- Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Guizhou University, Huaxi District, Guiyang, 550025, China
| | - Wenlong Kong
- Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Guizhou University, Huaxi District, Guiyang, 550025, China
| | - Baoan Song
- Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Guizhou University, Huaxi District, Guiyang, 550025, China
| | - Shengkun Li
- Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Guizhou University, Huaxi District, Guiyang, 550025, China; Department of Pesticide Science, College of Plant Protection, Nanjing Agricultural University, Weigang 1, Xuanwu District, Nanjing, 210095, China.
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13
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Huang J, Chen Z, Wu J. Recent Progress in Methyl-Radical-Mediated Methylation or Demethylation Reactions. ACS Catal 2021. [DOI: 10.1021/acscatal.1c02010] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Affiliation(s)
- Jiapian Huang
- Key Laboratory of Functional Small Organic Molecules, Ministry of Education, and Jiangxi Key Laboratory of Green Chemistry, College of Chemistry & Chemical Engineering, Jiangxi Normal University, 99 Ziyang Road, Nanchang, Jiangxi 330022, P. R. China
- School of Pharmaceutical and Materials Engineering & Institute for Advanced Studies, Taizhou University, 1139 Shifu Avenue, Taizhou 318000, China
| | - Zhiyuan Chen
- Key Laboratory of Functional Small Organic Molecules, Ministry of Education, and Jiangxi Key Laboratory of Green Chemistry, College of Chemistry & Chemical Engineering, Jiangxi Normal University, 99 Ziyang Road, Nanchang, Jiangxi 330022, P. R. China
| | - Jie Wu
- School of Pharmaceutical and Materials Engineering & Institute for Advanced Studies, Taizhou University, 1139 Shifu Avenue, Taizhou 318000, China
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, China
- School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang 453007, China
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14
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Wang M, Wang W, Li D, Wang WJ, Zhan R, Shao LD. α-C(sp 3)-H Arylation of Cyclic Carbonyl Compounds. NATURAL PRODUCTS AND BIOPROSPECTING 2021; 11:379-404. [PMID: 34097248 PMCID: PMC8275813 DOI: 10.1007/s13659-021-00312-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/07/2021] [Accepted: 05/24/2021] [Indexed: 05/05/2023]
Abstract
α-C(sp3)-H arylation is an important type of C-H functionalization. Various biologically significant natural products, chemical intermediates, and drugs have been effectively prepared via C-H functionalization. Cyclic carbonyl compounds comprise of cyclic ketones, enones, lactones, and lactams. The α-C(sp3)-H arylation of these compounds have been exhibited high efficiency in forming C(sp3)-C(sp2) bonds, played a crucial role in organic synthesis, and attracted majority of interests from organic and medicinal communities. This review focused on the most significant advances including methods, mechanism, and applications in total synthesis of natural products in the field of α-C(sp3)-H arylations of cyclic carbonyl compounds in recent years.
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Affiliation(s)
- Mei Wang
- Yunnan Key Laboratory of Southern Medicinal Utilization, School of Chinese Materia Medica, Yunnan University of Chinese Medicine, Kunming, 650050, China
| | - Wei Wang
- Yunnan Key Laboratory of Southern Medicinal Utilization, School of Chinese Materia Medica, Yunnan University of Chinese Medicine, Kunming, 650050, China
| | - Dashan Li
- Yunnan Key Laboratory of Southern Medicinal Utilization, School of Chinese Materia Medica, Yunnan University of Chinese Medicine, Kunming, 650050, China
| | - Wen-Jing Wang
- Yunnan Key Laboratory of Southern Medicinal Utilization, School of Chinese Materia Medica, Yunnan University of Chinese Medicine, Kunming, 650050, China
| | - Rui Zhan
- School of Chemistry and Chemical Engineering, Yunnan Normal University, Kunming, 650050, China.
| | - Li-Dong Shao
- Yunnan Key Laboratory of Southern Medicinal Utilization, School of Chinese Materia Medica, Yunnan University of Chinese Medicine, Kunming, 650050, China.
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15
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Lam NYS, Wu K, Yu JQ. Advancing the Logic of Chemical Synthesis: C-H Activation as Strategic and Tactical Disconnections for C-C Bond Construction. Angew Chem Int Ed Engl 2021; 60:15767-15790. [PMID: 33073459 PMCID: PMC8177825 DOI: 10.1002/anie.202011901] [Citation(s) in RCA: 157] [Impact Index Per Article: 52.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2020] [Revised: 09/28/2020] [Indexed: 12/13/2022]
Abstract
The design of synthetic routes by retrosynthetic logic is decisively influenced by the transformations available. Transition-metal-catalyzed C-H activation has emerged as a powerful strategy for C-C bond formation, with myriad methods developed for diverse substrates and coupling partners. However, its uptake in total synthesis has been tepid, partially due to their apparent synthetic intractability, as well as a lack of comprehensive guidelines for implementation. This Review addresses these issues and offers a guide to identify retrosynthetic opportunities to generate C-C bonds by C-H activation processes. By comparing total syntheses accomplished using traditional approaches and recent C-H activation methods, this Review demonstrates how C-H activation enabled C-C bond construction has led to more efficient retrosynthetic strategies, as well as the execution of previously unattainable tactical maneuvers. Finally, shortcomings of existing processes are highlighted; this Review illustrates how some highlighted total syntheses can be further economized by adopting next-generation ligand-enabled approaches.
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Affiliation(s)
- Nelson Y S Lam
- Department of Chemistry, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, CA, 92037, USA
| | - Kevin Wu
- Department of Chemistry, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, CA, 92037, USA
| | - Jin-Quan Yu
- Department of Chemistry, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, CA, 92037, USA
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16
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Weis E, Hayes MA, Johansson MJ, Martín-Matute B. Iridium-catalyzed C-H methylation and d 3-methylation of benzoic acids with application to late-stage functionalizations. iScience 2021; 24:102467. [PMID: 34027322 DOI: 10.1016/j.isci.2021.102467] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2021] [Revised: 03/24/2021] [Accepted: 04/21/2021] [Indexed: 12/31/2022] Open
Abstract
Late-stage functionalization (LSF) has over the past years emerged as a powerful approach in the drug discovery process. At its best, it allows for rapid access to new analogues from a single drug-like molecule, bypassing the need for de novo synthesis. To be successful, methods able to tolerate the diverse functional groups present in drug-like molecules that perform under mild conditions are required. C-H methylation is of particular interest due to the magic methyl effect in medicinal chemistry. Herein we report an iridium-catalyzed carboxylate-directed ortho C-H methylation and d 3-methylation of benzoic acids. The method uses commercially available reagents and precatalyst and requires no inert atmosphere or exclusion of moisture. Substrates bearing electron-rich and electron-poor groups were successfully methylated, including compounds with competing directing/coordinating groups. The method was also applied to the LSF of several marketed drugs, forming analogues with increased metabolic stability compared with the parent drug.
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Affiliation(s)
- Erik Weis
- Department of Organic Chemistry, Stockholm University, Stockholm 106 91, Sweden.,Medicinal Chemistry, Research and Early Development, Cardiovascular, Renal and Metabolism (CVRM), Biopharmaceuticals R&D, AstraZeneca, Gothenburg, Sweden
| | - Martin A Hayes
- Hit Discovery, Discovery Sciences, Biopharmaceuticals R&D, AstraZeneca, Gothenburg, Sweden
| | - Magnus J Johansson
- Medicinal Chemistry, Research and Early Development, Cardiovascular, Renal and Metabolism (CVRM), Biopharmaceuticals R&D, AstraZeneca, Gothenburg, Sweden
| | - Belén Martín-Matute
- Department of Organic Chemistry, Stockholm University, Stockholm 106 91, Sweden
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17
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Das J, Mal DK, Maji S, Maiti D. Recent Advances in External-Directing-Group-Free C–H Functionalization of Carboxylic Acids without Decarboxylation. ACS Catal 2021. [DOI: 10.1021/acscatal.1c00176] [Citation(s) in RCA: 39] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Affiliation(s)
- Jayabrata Das
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India
| | - Dibya Kanti Mal
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India
| | - Suman Maji
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India
| | - Debabrata Maiti
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India
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18
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Provencher PA, Bay KL, Hoskin JF, Houk KN, Yu JQ, Sorensen EJ. Cyclization by C(sp 3)–H Arylation with a Transient Directing Group for the Diastereoselective Preparation of Indanes. ACS Catal 2021. [DOI: 10.1021/acscatal.0c05081] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Philip A. Provencher
- Department of Chemistry, Princeton University, Princeton, New Jersey 08544, United States
| | - Katherine L. Bay
- Department of Chemistry and Biochemistry, University of Chemistry, Los Angeles, California 90095, United States
| | - John F. Hoskin
- Department of Chemistry, Princeton University, Princeton, New Jersey 08544, United States
| | - K. N. Houk
- Department of Chemistry and Biochemistry, University of Chemistry, Los Angeles, California 90095, United States
| | - Jin-Quan Yu
- Department of Chemistry, The Scripps Research Institute, La Jolla, California 92037, United States
| | - Erik J. Sorensen
- Department of Chemistry, Princeton University, Princeton, New Jersey 08544, United States
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19
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Lin J, Hu L, Chen C, Feng H, Yu Y, Yang Y, Zhou B. Rhodium-Catalyzed Twofold Unsymmetrical C-H Alkenylation-Annulation/Thiolation Reaction To Access Thiobenzofurans. Org Lett 2021; 23:1194-1198. [PMID: 33523667 DOI: 10.1021/acs.orglett.0c04134] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
A Rh(III)-catalyzed twofold unsymmetrical C-H alkenylation-annulation/thiolation reaction has been developed, enabling the straightforward and efficient synthesis of various thiobenzofurans in one step. This robust protocol proceeds with a broad substrate scope and good functional group tolerance under relatively mild reaction conditions.
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Affiliation(s)
- Jian Lin
- Center for Supramolecular Chemistry & Catalysis and Department of Chemistry, College of Science, Shanghai University, Shanghai 200444, China.,State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, China.,University of Chinese Academy of Sciences, Beijing 100049, China
| | - Liuyu Hu
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, China.,University of Chinese Academy of Sciences, Beijing 100049, China.,School of Chinese Materia Medica, Nanjing University of Chinese Medicine, Nanjing, Jiangsu 210023, China
| | - Chao Chen
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, China.,University of Chinese Academy of Sciences, Beijing 100049, China.,Department of Medicinal Chemistry, School of Pharmacy, Fudan University, Shanghai 201203, China
| | - Huijin Feng
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, China
| | - Yang Yu
- Center for Supramolecular Chemistry & Catalysis and Department of Chemistry, College of Science, Shanghai University, Shanghai 200444, China
| | - Yaxi Yang
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, China.,University of Chinese Academy of Sciences, Beijing 100049, China.,School of Pharmaceutical Science and Technology, Hangzhou Institute for Advanced Study, University of Chinese Academy of Sciences, Hangzhou 310024, China
| | - Bing Zhou
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, China.,University of Chinese Academy of Sciences, Beijing 100049, China.,School of Chinese Materia Medica, Nanjing University of Chinese Medicine, Nanjing, Jiangsu 210023, China.,School of Pharmaceutical Science and Technology, Hangzhou Institute for Advanced Study, University of Chinese Academy of Sciences, Hangzhou 310024, China
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20
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Lam NYS, Wu K, Yu J. Advancing the Logic of Chemical Synthesis: C−H Activation as Strategic and Tactical Disconnections for C−C Bond Construction. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202011901] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Affiliation(s)
- Nelson Y. S. Lam
- Department of Chemistry The Scripps Research Institute 10550 North Torrey Pines Road La Jolla CA 92037 USA
| | - Kevin Wu
- Department of Chemistry The Scripps Research Institute 10550 North Torrey Pines Road La Jolla CA 92037 USA
| | - Jin‐Quan Yu
- Department of Chemistry The Scripps Research Institute 10550 North Torrey Pines Road La Jolla CA 92037 USA
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21
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Zhuang Z, Herron AN, Liu S, Yu JQ. Rapid Construction of Tetralin, Chromane, and Indane Motifs via Cyclative C-H/C-H Coupling: Four-Step Total Synthesis of (±)-Russujaponol F. J Am Chem Soc 2021; 143:687-692. [PMID: 33395528 DOI: 10.1021/jacs.0c12484] [Citation(s) in RCA: 44] [Impact Index Per Article: 14.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
The development of practical C-H/C-H coupling reactions remains a challenging yet appealing synthetic venture because it circumvents the need to prefunctionalize both coupling partners for the generation of C-C bonds. Herein we report a cyclative C(sp3)-H/C(sp2)-H coupling reaction of free aliphatic acids enabled by a cyclopentane-based mono-N-protected β-amino acid ligand. This reaction uses inexpensive sodium percarbonate (Na2CO3·1.5H2O2) as the sole oxidant and generates water as the only byproduct. A range of biologically important scaffolds, including tetralins, chromanes, and indanes, can be easily prepared by this protocol. Finally, the synthetic application of this methodology is demonstrated by the concise total synthesis of (±)-russujaponol F in a four-step sequence starting from readily available phenylacetic acid and pivalic acid through sequential functionalizations of four C-H bonds.
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Affiliation(s)
- Zhe Zhuang
- Department of Chemistry, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, California 92037, United States
| | - Alastair N Herron
- Department of Chemistry, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, California 92037, United States
| | - Shuang Liu
- Department of Chemistry, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, California 92037, United States
| | - Jin-Quan Yu
- Department of Chemistry, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, California 92037, United States
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22
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Aynetdinova D, Callens MC, Hicks HB, Poh CYX, Shennan BDA, Boyd AM, Lim ZH, Leitch JA, Dixon DJ. Installing the “magic methyl” – C–H methylation in synthesis. Chem Soc Rev 2021; 50:5517-5563. [DOI: 10.1039/d0cs00973c] [Citation(s) in RCA: 71] [Impact Index Per Article: 23.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Following notable cases of remarkable potency increases in methylated analogues of lead compounds, this review documents the state-of-the-art in C–H methylation technology.
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Affiliation(s)
- Daniya Aynetdinova
- Department of Chemistry
- University of Oxford
- Chemistry Research Laboratory
- Oxford
- UK
| | - Mia C. Callens
- Department of Chemistry
- University of Oxford
- Chemistry Research Laboratory
- Oxford
- UK
| | - Harry B. Hicks
- Department of Chemistry
- University of Oxford
- Chemistry Research Laboratory
- Oxford
- UK
| | - Charmaine Y. X. Poh
- Department of Chemistry
- University of Oxford
- Chemistry Research Laboratory
- Oxford
- UK
| | | | - Alistair M. Boyd
- Department of Chemistry
- University of Oxford
- Chemistry Research Laboratory
- Oxford
- UK
| | - Zhong Hui Lim
- Department of Chemistry
- University of Oxford
- Chemistry Research Laboratory
- Oxford
- UK
| | - Jamie A. Leitch
- Department of Chemistry
- University of Oxford
- Chemistry Research Laboratory
- Oxford
- UK
| | - Darren J. Dixon
- Department of Chemistry
- University of Oxford
- Chemistry Research Laboratory
- Oxford
- UK
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23
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Li J, Fang F, Wang R, Li Y, Xu B, Liu H, Zhou Y. A Rh(iii)-catalyzed C–H activation/regiospecific annulation cascade of benzoic acids with propargyl acetates to unusual 3-alkylidene-isochromanones. Org Chem Front 2021. [DOI: 10.1039/d1qo00387a] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We developed a new approach to synthesize isochromanones with benzoic acids and propargyl acetates, which introducing an unusual exocyclic C–C double bond at the 3-position with high regioselectivity and moderate to excellent yields.
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Affiliation(s)
- Jiyuan Li
- Department of Chemistry
- Shanghai University
- Shanghai 200444
- China
- State Key Laboratory of Drug Research
| | - Feifei Fang
- State Key Laboratory of Drug Research
- Shanghai Institute of Materia Medica
- Chinese Academy of Sciences
- Shanghai 201203
- China
| | - Run Wang
- State Key Laboratory of Drug Research
- Shanghai Institute of Materia Medica
- Chinese Academy of Sciences
- Shanghai 201203
- China
| | - Yuan Li
- State Key Laboratory of Drug Research
- Shanghai Institute of Materia Medica
- Chinese Academy of Sciences
- Shanghai 201203
- China
| | - Bin Xu
- Department of Chemistry
- Shanghai University
- Shanghai 200444
- China
| | - Hong Liu
- State Key Laboratory of Drug Research
- Shanghai Institute of Materia Medica
- Chinese Academy of Sciences
- Shanghai 201203
- China
| | - Yu Zhou
- State Key Laboratory of Drug Research
- Shanghai Institute of Materia Medica
- Chinese Academy of Sciences
- Shanghai 201203
- China
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24
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Boddapati SNM, Tamminana R, Alam MM, Gugulothu S, Varala R, Bollikolla HB. Efficient Pd( ii)-catalyzed regioselective ortho-halogenation of arylcyanamides. NEW J CHEM 2021. [DOI: 10.1039/d1nj01998h] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
2-Halo arylcyanamides have been constructed from cyanamides via Pd(ii)-catalyzed selective ortho-halogenation under moderate reaction conditions.
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Affiliation(s)
- S. N. Murthy Boddapati
- Department of Chemistry, Acharya Nagarjuna University, N Nagar, Guntur, A. P-522510, India
- Department of Chemistry, Sir C R Reddy College, P G Courses, Eluru, A.P-534007, India
| | - Ramana Tamminana
- Department of Chemistry, GITAM Deemed to be University, Bengaluru Campus, Bengaluru Rural, Karnataka, 562163, India
| | - M. Mujahid Alam
- Department of Chemistry, College of Science, King Khalid University, PO Box 9004, Abha 61413, Saudi Arabia
| | - Sailaja Gugulothu
- Department of Chemistry, Acharya Nagarjuna University, N Nagar, Guntur, A. P-522510, India
| | | | - Hari Babu Bollikolla
- Department of Chemistry, Acharya Nagarjuna University, N Nagar, Guntur, A. P-522510, India
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25
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Mies T, White AJP, Parsons PJ, Barrett AGM. Biomimetic Syntheses of Analogs of Hongoquercin A and B by Late-Stage Derivatization. J Org Chem 2020; 86:1802-1817. [DOI: 10.1021/acs.joc.0c02638] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Affiliation(s)
- Thomas Mies
- Department of Chemistry, Imperial College, Molecular Sciences Research Hub, White City Campus, Wood Lane, London W12 0BZ, England
| | - Andrew J. P. White
- Department of Chemistry, Imperial College, Molecular Sciences Research Hub, White City Campus, Wood Lane, London W12 0BZ, England
| | - Philip J. Parsons
- Department of Chemistry, Imperial College, Molecular Sciences Research Hub, White City Campus, Wood Lane, London W12 0BZ, England
| | - Anthony G. M. Barrett
- Department of Chemistry, Imperial College, Molecular Sciences Research Hub, White City Campus, Wood Lane, London W12 0BZ, England
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26
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Salazar CA, Flesch KN, Haines BE, Zhou PS, Musaev DG, Stahl SS. Tailored quinones support high-turnover Pd catalysts for oxidative C-H arylation with O 2. Science 2020; 370:1454-1460. [PMID: 33214286 DOI: 10.1126/science.abd1085] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2020] [Revised: 10/12/2020] [Accepted: 11/09/2020] [Indexed: 02/04/2023]
Abstract
Palladium(II)-catalyzed carbon-hydrogen (C-H) oxidation reactions could streamline the synthesis of pharmaceuticals, agrochemicals, and other complex organic molecules. Existing methods, however, commonly exhibit poor catalyst performance with high palladium (Pd) loading (e.g., 10 mole %) and a need for (super)stoichiometric quantities of undesirable oxidants, such as benzoquinone and silver(I) salts. The present study probes the mechanism of a representative Pd-catalyzed oxidative C-H arylation reaction and elucidates mechanistic features that undermine catalyst performance, including substrate-consuming side reactions and sequestration of the catalyst as an inactive species. Systematic tuning of the quinone cocatalyst overcomes these deleterious features. Use of 2,5-di-tert-butyl-p-benzoquinone enables efficient use of molecular oxygen as the oxidant, high reaction yields, and >1900 turnovers by the Pd catalyst.
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Affiliation(s)
- Chase A Salazar
- Department of Chemistry, University of Wisconsin-Madison, 1101 University Avenue, Madison, WI 53706, USA
| | - Kaylin N Flesch
- Department of Chemistry, University of Wisconsin-Madison, 1101 University Avenue, Madison, WI 53706, USA
| | - Brandon E Haines
- Cherry L. Emerson Center for Scientific Computation, Emory University, 1515 Dickey Drive, Atlanta, GA 30322, USA
| | - Philip S Zhou
- Department of Chemistry, University of Wisconsin-Madison, 1101 University Avenue, Madison, WI 53706, USA
| | - Djamaladdin G Musaev
- Cherry L. Emerson Center for Scientific Computation, Emory University, 1515 Dickey Drive, Atlanta, GA 30322, USA
| | - Shannon S Stahl
- Department of Chemistry, University of Wisconsin-Madison, 1101 University Avenue, Madison, WI 53706, USA.
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27
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Mandal A, Garai B, Dana S, Bera R, Baidya M. Cross-Dehydrogenative Coupling/Annulation of Arene Carboxylic Acids and Alkenes in Water with Ruthenium(II) Catalyst and Air. Chem Asian J 2020; 15:4009-4013. [PMID: 33090685 DOI: 10.1002/asia.202001087] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2020] [Revised: 10/10/2020] [Indexed: 12/29/2022]
Abstract
A cross-dehydrogenative coupling of arene carboxylic acids with olefins is reported with ruthenium(II) catalyst employing air and water as green oxidant and solvent, respectively. It offers a robust synthesis of valuable phthalide molecules. A one-pot sequential strategy is also disclosed to access Heck-type products that are apparently difficult to make directly from arene carboxylic acids.
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Affiliation(s)
- Anup Mandal
- Department of Chemistry, Indian Institute of Technology Madras, Chennai, 600 036, Tamil Nadu, India
| | - Bholanath Garai
- Department of Chemistry, Indian Institute of Technology Madras, Chennai, 600 036, Tamil Nadu, India
| | - Suman Dana
- Department of Chemistry, Indian Institute of Technology Madras, Chennai, 600 036, Tamil Nadu, India
| | - Ratnadeep Bera
- Department of Chemistry, Indian Institute of Technology Madras, Chennai, 600 036, Tamil Nadu, India
| | - Mahiuddin Baidya
- Department of Chemistry, Indian Institute of Technology Madras, Chennai, 600 036, Tamil Nadu, India
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28
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N-Tosylcarboxamide in C–H Functionalization: More than a Simple Directing Group. Processes (Basel) 2020. [DOI: 10.3390/pr8080981] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
C–H activation with transition metal catalysis has become an important tool in organic synthesis for the functionalization of low reactive bonds and the preparation of complex molecules. The choice of the directing group (DG) proves to be crucial for the selectivity in this type of reaction, and several different functional groups have been used efficiently. This review describes recent advances in C–H functionalization of aromatic rings directed by a N-tosylcarboxamide group. Results regarding alkenylation, alkoxylation, halogenation, and arylation of C–H in the ortho position to the tosylcarboxamide are presented. Moreover, the advantage of this particular directing group is that it can undergo further transformation and act as CO or CON fragment reservoir to produce, in sequential fashion or one-pot sequence, various interesting (hetero)cycles such as phenanthridinones, dihydroisoquinolinones, fluorenones, or isoindolinones.
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29
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C-Methylation of Organic Substrates: A Comprehensive Overview. Part II—Methyl Metals as Methylating Agents. CHEMISTRY AFRICA 2020. [DOI: 10.1007/s42250-020-00172-1] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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30
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Baudoin O. Mehrfache katalytische C‐H‐Bindungsfunktionalisierungen in der Naturstoffsynthese. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202001224] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Affiliation(s)
- Olivier Baudoin
- University of Basel Department of Chemistry St. Johanns-Ring 19 CH-4056 Basel Schweiz
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31
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Baudoin O. Multiple Catalytic C-H Bond Functionalization for Natural Product Synthesis. Angew Chem Int Ed Engl 2020; 59:17798-17809. [PMID: 32220111 DOI: 10.1002/anie.202001224] [Citation(s) in RCA: 96] [Impact Index Per Article: 24.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2020] [Indexed: 01/17/2023]
Abstract
In the past decade, multiple catalytic C-H bond functionalization has been successfully applied in natural product synthesis as a strategy to reduce the number of steps, increase overall yield and employ more easily available starting materials. This minireview presents selected examples making use of multiple C-H bond functionalization in conceptually different ways. First, linear syntheses are discussed, wherein multiple C-H functionalization is employed either from simple (hetero)cyclic cores, at a late stage, or to build polycyclic systems. Second, the use of multiple C-H functionalization as a strategic tool in convergent synthesis to access and couple complex fragments is discussed. Information on the scalability of the employed methods is provided when available. The presented cases indicate that multiple C-H functionalization strategies should play a great role to shape the future synthesis of functional complex molecules with improved sustainability.
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Affiliation(s)
- Olivier Baudoin
- University of Basel, Department of Chemistry, St. Johanns-Ring 19, CH-4056, Basel, Switzerland
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32
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Ghosh K, Rit RK, Shankar M, Mukherjee K, Sahoo AK. Directing Group Assisted Unsymmetrical Multiple Functionalization of Arene C-H Bonds. CHEM REC 2020; 20:1017-1042. [PMID: 32779389 DOI: 10.1002/tcr.202000063] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2020] [Revised: 07/09/2020] [Accepted: 07/10/2020] [Indexed: 12/28/2022]
Abstract
Multiple C-H bond functionalizations promptly install diverse groups on the molecular framework and consequently fabricate complex molecular entities. This review briefly surveys the conceptual development of directing group assisted unsymmetrical multiple functionalization of arene C(sp2 )-H bonds, which is exceedingly appealing and highly important.
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Affiliation(s)
- Koushik Ghosh
- School of Chemistry, University of Hyderabad, Hyderabad, 500046, India
| | - Raja K Rit
- School of Chemistry, University of Hyderabad, Hyderabad, 500046, India
| | - Majji Shankar
- School of Chemistry, University of Hyderabad, Hyderabad, 500046, India
| | - Kallol Mukherjee
- School of Chemistry, University of Hyderabad, Hyderabad, 500046, India
| | - Akhila K Sahoo
- School of Chemistry, University of Hyderabad, Hyderabad, 500046, India
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33
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Suh SE, Chen SJ, Mandal M, Guzei IA, Cramer CJ, Stahl SS. Site-Selective Copper-Catalyzed Azidation of Benzylic C-H Bonds. J Am Chem Soc 2020; 142:11388-11393. [PMID: 32539355 PMCID: PMC7405889 DOI: 10.1021/jacs.0c05362] [Citation(s) in RCA: 91] [Impact Index Per Article: 22.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
Site selectivity represents a key challenge for non-directed C-H functionalization, even when the C-H bond is intrinsically reactive. Here, we report a copper-catalyzed method for benzylic C-H azidation of diverse molecules. Experimental and density functional theory studies suggest the benzyl radical reacts with a CuII-azide species via a radical-polar crossover pathway. Comparison of this method with other C-H azidation methods highlights its unique site selectivity, and conversions of the benzyl azide products into amine, triazole, tetrazole, and pyrrole functional groups highlight the broad utility of this method for target molecule synthesis and medicinal chemistry.
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Affiliation(s)
- Sung-Eun Suh
- Department of Chemistry, University of Wisconsin–Madison, 1101 University Avenue, Madison, Wisconsin 53706, United States
| | - Si-Jie Chen
- Department of Chemistry, University of Wisconsin–Madison, 1101 University Avenue, Madison, Wisconsin 53706, United States
| | - Mukunda Mandal
- Department of Chemistry, Chemical Theory Center and Supercomputing Institute, University of Minnesota, Minneapolis, Minnesota 55455, United States
| | - Ilia A. Guzei
- Department of Chemistry, University of Wisconsin–Madison, 1101 University Avenue, Madison, Wisconsin 53706, United States
| | - Christopher J. Cramer
- Department of Chemistry, Chemical Theory Center and Supercomputing Institute, University of Minnesota, Minneapolis, Minnesota 55455, United States
| | - Shannon S. Stahl
- Department of Chemistry, University of Wisconsin–Madison, 1101 University Avenue, Madison, Wisconsin 53706, United States
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34
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Ghosh K, Ghosh A, Mukherjee K, Rit RK, Sahoo AK. Sulfoximine-Assisted Unsymmetrical Twofold C-H Functionalization of Arenes. J Org Chem 2020; 85:8618-8626. [PMID: 32519873 DOI: 10.1021/acs.joc.0c01010] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
An unprecedented ruthenium (Ru)-catalyzed twofold unsymmetrical annulation of 3-O/N-allyl benzoic acid derivatives with isocyanates for the construction of dihydro-furan/indole-fused phthalimide scaffolds is discussed. This double-unsymmetrical functionalization of both o,o'-C-H bonds of arene moiety is explicitly viable under the influence of methylphenyl sulfoximine directing group constructing three different [C-C/C-C(O)/N-C(O)] bonds under a single catalytic system. A broad scope with all six-carbon-substituted arene motifs, control experiments, and gram-scale synthesis make the synthetic model viable and significant.
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Affiliation(s)
- Koushik Ghosh
- School of Chemistry, University of Hyderabad, Hyderabad 500046, India
| | - Arghadip Ghosh
- School of Chemistry, University of Hyderabad, Hyderabad 500046, India
| | - Kallol Mukherjee
- School of Chemistry, University of Hyderabad, Hyderabad 500046, India
| | - Raja K Rit
- School of Chemistry, University of Hyderabad, Hyderabad 500046, India
| | - Akhila K Sahoo
- School of Chemistry, University of Hyderabad, Hyderabad 500046, India
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35
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Friis SD, Johansson MJ, Ackermann L. Cobalt-catalysed C-H methylation for late-stage drug diversification. Nat Chem 2020; 12:511-519. [PMID: 32472105 DOI: 10.1038/s41557-020-0475-7] [Citation(s) in RCA: 106] [Impact Index Per Article: 26.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2019] [Accepted: 04/24/2020] [Indexed: 01/01/2023]
Abstract
The magic methyl effect is well acknowledged in medicinal chemistry, but despite its significance, accessing such analogues via derivatization at a late stage remains a pivotal challenge. In an effort to mitigate this major limitation, we here present a strategy for the cobalt-catalysed late-stage C-H methylation of structurally complex drug molecules. Enabling broad applicability, the transformation relies on a boron-based methyl source and takes advantage of inherently present functional groups to guide the C-H activation. The relative reactivity observed for distinct classes of functionalities were determined and the sensitivity of the transformation towards a panel of common functional motifs was tested under various reaction conditions. Without the need for prefunctionalization or postdeprotection, a diverse array of marketed drug molecules and natural products could be methylated in a predictable manner. Subsequent physicochemical and biological testing confirmed the magnitude with which this seemingly minor structural change can affect important drug properties.
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Affiliation(s)
- Stig D Friis
- Medicinal Chemistry, Research and Early Development, Cardiovascular, Renal and Metabolism (CVRM), BioPharmaceuticals R&D, AstraZeneca, Gothenburg, Sweden
| | - Magnus J Johansson
- Medicinal Chemistry, Research and Early Development, Cardiovascular, Renal and Metabolism (CVRM), BioPharmaceuticals R&D, AstraZeneca, Gothenburg, Sweden.
| | - Lutz Ackermann
- Institut für Organische und Biomolekulare Chemie, Georg-August-Universität Göttingen, Göttingen, Germany.
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36
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Valero M, Kruissink T, Blass J, Weck R, Güssregen S, Plowright AT, Derdau V. C-H Functionalization-Prediction of Selectivity in Iridium(I)-Catalyzed Hydrogen Isotope Exchange Competition Reactions. Angew Chem Int Ed Engl 2020; 59:5626-5631. [PMID: 31917506 PMCID: PMC7232431 DOI: 10.1002/anie.201914220] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2019] [Indexed: 12/22/2022]
Abstract
An assessment of the C-H activation catalyst [(COD)Ir(IMes)(PPh3 )]PF6 (COD=1,5-cyclooctadiene, IMes=1,3-bis(2,4,6-trimethylphenyl)imidazol-2-ylidene) in the deuteration of phenyl rings containing different functional directing groups is divulged. Competition experiments have revealed a clear order of the directing groups in the hydrogen isotope exchange (HIE) with an iridium (I) catalyst. Through DFT calculations the iridium-substrate coordination complex has been identified to be the main trigger for reactivity and selectivity in the competition situation with two or more directing groups. We postulate that the competition concept found in this HIE reaction can be used to explain regioselectivities in other transition-metal-catalyzed functionalization reactions of complex drug-type molecules as long as a C-H activation mechanism is involved.
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Affiliation(s)
- Mégane Valero
- Sanofi-Aventis (Deutschland) GmbH, R&DIntegrated Drug DiscoveryIndustriepark Höchst65926Frankfurt am MainGermany
| | - Thomas Kruissink
- Sanofi-Aventis (Deutschland) GmbH, R&DIntegrated Drug DiscoveryIndustriepark Höchst65926Frankfurt am MainGermany
| | - Jennifer Blass
- Sanofi-Aventis (Deutschland) GmbH, R&DIntegrated Drug DiscoveryIndustriepark Höchst65926Frankfurt am MainGermany
| | - Remo Weck
- Sanofi-Aventis (Deutschland) GmbH, R&DIntegrated Drug DiscoveryIndustriepark Höchst65926Frankfurt am MainGermany
| | - Stefan Güssregen
- Sanofi-Aventis (Deutschland) GmbH, R&DIntegrated Drug DiscoveryIndustriepark Höchst65926Frankfurt am MainGermany
| | - Alleyn T. Plowright
- Sanofi-Aventis (Deutschland) GmbH, R&DIntegrated Drug DiscoveryIndustriepark Höchst65926Frankfurt am MainGermany
| | - Volker Derdau
- Sanofi-Aventis (Deutschland) GmbH, R&DIntegrated Drug DiscoveryIndustriepark Höchst65926Frankfurt am MainGermany
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37
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Xia G, Zhuang Z, Liu LY, Schreiber SL, Melillo B, Yu JQ. Ligand-Enabled β-Methylene C(sp 3 )-H Arylation of Masked Aliphatic Alcohols. Angew Chem Int Ed Engl 2020; 59:7783-7787. [PMID: 32050036 DOI: 10.1002/anie.202000632] [Citation(s) in RCA: 32] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2020] [Indexed: 12/18/2022]
Abstract
Despite recent advances, reactivity and site-selectivity remain significant obstacles for the practical application of C(sp3 )-H bond functionalization methods. Here, we describe a system that combines a salicylic-aldehyde-derived L,X-type directing group with an electron-deficient 2-pyridone ligand to enable the β-methylene C(sp3 )-H arylation of aliphatic alcohols, which has not been possible previously. Notably, this protocol is compatible with heterocycles embedded in both alcohol substrates and aryl coupling partners. A site- and stereo-specific annulation of dihydrocholesterol and the synthesis of a key intermediate of englitazone illustrate the practicality of this method.
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Affiliation(s)
- Guoqin Xia
- Department of Chemistry, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, CA, 92037, USA
| | - Zhe Zhuang
- Department of Chemistry, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, CA, 92037, USA
| | - Luo-Yan Liu
- Department of Chemistry, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, CA, 92037, USA
| | - Stuart L Schreiber
- Chemical Biology and Therapeutics Science Program, Broad Institute, Cambridge, MA, 02142, USA
- Department of Chemistry and Chemical Biology, Harvard University, Cambridge, MA, 02138, USA
| | - Bruno Melillo
- Department of Chemistry, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, CA, 92037, USA
- Chemical Biology and Therapeutics Science Program, Broad Institute, Cambridge, MA, 02142, USA
| | - Jin-Quan Yu
- Department of Chemistry, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, CA, 92037, USA
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38
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Xia G, Zhuang Z, Liu L, Schreiber SL, Melillo B, Yu J. Ligand‐Enabled β‐Methylene C(sp
3
)−H Arylation of Masked Aliphatic Alcohols. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202000632] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Guoqin Xia
- Department of Chemistry The Scripps Research Institute 10550 North Torrey Pines Road La Jolla CA 92037 USA
| | - Zhe Zhuang
- Department of Chemistry The Scripps Research Institute 10550 North Torrey Pines Road La Jolla CA 92037 USA
| | - Luo‐Yan Liu
- Department of Chemistry The Scripps Research Institute 10550 North Torrey Pines Road La Jolla CA 92037 USA
| | - Stuart L. Schreiber
- Chemical Biology and Therapeutics Science Program Broad Institute Cambridge MA 02142 USA
- Department of Chemistry and Chemical Biology Harvard University Cambridge MA 02138 USA
| | - Bruno Melillo
- Department of Chemistry The Scripps Research Institute 10550 North Torrey Pines Road La Jolla CA 92037 USA
- Chemical Biology and Therapeutics Science Program Broad Institute Cambridge MA 02142 USA
| | - Jin‐Quan Yu
- Department of Chemistry The Scripps Research Institute 10550 North Torrey Pines Road La Jolla CA 92037 USA
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39
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Valero M, Kruissink T, Blass J, Weck R, Güssregen S, Plowright AT, Derdau V. C−H Functionalization—Prediction of Selectivity in Iridium(I)‐Catalyzed Hydrogen Isotope Exchange Competition Reactions. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.201914220] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Mégane Valero
- Sanofi-Aventis (Deutschland) GmbH, R&D Integrated Drug Discovery Industriepark Höchst 65926 Frankfurt am Main Germany
| | - Thomas Kruissink
- Sanofi-Aventis (Deutschland) GmbH, R&D Integrated Drug Discovery Industriepark Höchst 65926 Frankfurt am Main Germany
| | - Jennifer Blass
- Sanofi-Aventis (Deutschland) GmbH, R&D Integrated Drug Discovery Industriepark Höchst 65926 Frankfurt am Main Germany
| | - Remo Weck
- Sanofi-Aventis (Deutschland) GmbH, R&D Integrated Drug Discovery Industriepark Höchst 65926 Frankfurt am Main Germany
| | - Stefan Güssregen
- Sanofi-Aventis (Deutschland) GmbH, R&D Integrated Drug Discovery Industriepark Höchst 65926 Frankfurt am Main Germany
| | - Alleyn T. Plowright
- Sanofi-Aventis (Deutschland) GmbH, R&D Integrated Drug Discovery Industriepark Höchst 65926 Frankfurt am Main Germany
| | - Volker Derdau
- Sanofi-Aventis (Deutschland) GmbH, R&D Integrated Drug Discovery Industriepark Höchst 65926 Frankfurt am Main Germany
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40
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Wu M, Chu J. Directing group assists in transition metal‐catalyzed site‐selective C‐H bond activation/transformations. J CHIN CHEM SOC-TAIP 2020. [DOI: 10.1002/jccs.201900471] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Ming‐Jung Wu
- Department of ChemistryNational Sun Yat‐sen University Kaohsiung Taiwan
| | - Jean‐Ho Chu
- Department of Applied ScienceNational Taitung University Taitung Taiwan
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41
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Gao MY, Li JH, Zhang SB, Chen LJ, Li YS, Dong ZB. A Mild Synthesis of 2-Substituted Benzothiazoles via Nickel-Catalyzed Intramolecular Oxidative C-H Functionalization. J Org Chem 2019; 85:493-500. [PMID: 31845809 DOI: 10.1021/acs.joc.9b02543] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A highly efficient synthetic method for the preparation of 2-aminobenzothiazoles starting from arylthioureas has been reported. By using a nickel catalyst, arylthioureas undergo intramolecular oxidative C-H bond functionalization, giving the desired 2-aminobenzothiazoles in good to excellent yields. This protocol features an inexpensive catalyst, low catalyst loading, mild reaction conditions, a short reaction time, and good to excellent yields, and it can be scaled up easily to a gram scale with almost no yields decreasing.
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Affiliation(s)
- Ming-Yuan Gao
- School of Chemistry and Environmental Engineering , Wuhan Institute of Technology , Wuhan 430205 , China
| | - Jing-Hang Li
- School of Chemistry and Environmental Engineering , Wuhan Institute of Technology , Wuhan 430205 , China
| | - Shi-Bo Zhang
- School of Chemistry and Environmental Engineering , Wuhan Institute of Technology , Wuhan 430205 , China
| | - Li-Jun Chen
- School of Chemistry and Environmental Engineering , Wuhan Institute of Technology , Wuhan 430205 , China
| | - Yue-Sheng Li
- Hubei Key Laboratory of Radiation Chemistry and Functional Materials, School of Nuclear Technology and Chemistry & Biology , Hubei University of Science and Technology , Xianning 437100 , China
| | - Zhi-Bing Dong
- Hubei Key Laboratory of Radiation Chemistry and Functional Materials, School of Nuclear Technology and Chemistry & Biology , Hubei University of Science and Technology , Xianning 437100 , China.,School of Chemistry and Environmental Engineering , Wuhan Institute of Technology , Wuhan 430205 , China
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42
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Liu D, Yu L, Yu Y, Xia Z, Song Z, Liao L, Tan Z, Chen X. Nickel-Catalyzed Ortho
C-H Methylation of Aromatic Amides with Di-tert
-butyl Peroxide as Methylation Reagent. European J Org Chem 2019. [DOI: 10.1002/ejoc.201901211] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Da Liu
- State Key Laboratory of Chemo/Biosensing and Chemometrics; College of Chemistry and Chemical Engineering; Hunan University; 410082 Changsha P. R. China
- College of Chemistry and Chemical Engineering; Kamp Pharmaceuticals CO., LTD.; 415900 Changde P. R. China
| | - Lin Yu
- State Key Laboratory of Chemo/Biosensing and Chemometrics; College of Chemistry and Chemical Engineering; Hunan University; 410082 Changsha P. R. China
| | - Yongqi Yu
- State Key Laboratory of Chemo/Biosensing and Chemometrics; College of Chemistry and Chemical Engineering; Hunan University; 410082 Changsha P. R. China
| | - Zhen Xia
- State Key Laboratory of Chemo/Biosensing and Chemometrics; College of Chemistry and Chemical Engineering; Hunan University; 410082 Changsha P. R. China
| | - Zenan Song
- State Key Laboratory of Chemo/Biosensing and Chemometrics; College of Chemistry and Chemical Engineering; Hunan University; 410082 Changsha P. R. China
| | - Lihong Liao
- College of Chemistry and Chemical Engineering; Kamp Pharmaceuticals CO., LTD.; 415900 Changde P. R. China
| | - Ze Tan
- State Key Laboratory of Chemo/Biosensing and Chemometrics; College of Chemistry and Chemical Engineering; Hunan University; 410082 Changsha P. R. China
| | - Xiang Chen
- State Key Laboratory of Chemo/Biosensing and Chemometrics; College of Chemistry and Chemical Engineering; Hunan University; 410082 Changsha P. R. China
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43
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Large B, Gigant N, Joseph D, Prim D. Rhodium-Catalyzed C-H Activation of Naphthamides for the Syntheiss of Substituted 3 H
-Benzo[ e
]isoindolin-3-ones. European J Org Chem 2019. [DOI: 10.1002/ejoc.201901244] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Affiliation(s)
- Benjamin Large
- ILV, UVSQ, CNRS; Université Paris-Saclay; 78035 Versailles France
| | - Nicolas Gigant
- BioCIS, Université Paris-Sud, CNRS; Université Paris-Saclay; 92296 Châtenay-Malabry France
| | - Delphine Joseph
- BioCIS, Université Paris-Sud, CNRS; Université Paris-Saclay; 92296 Châtenay-Malabry France
| | - Damien Prim
- ILV, UVSQ, CNRS; Université Paris-Saclay; 78035 Versailles France
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44
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Guntreddi T, Shankar M, Kommu N, Sahoo AK. Construction of Pyranoisoquinolines via Ru(II)-Catalyzed Unsymmetrical Double Annulation of N-Methoxybenzamides with Unactivated Alkynes. J Org Chem 2019; 84:13033-13044. [PMID: 31411030 DOI: 10.1021/acs.joc.9b01878] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A ruthenium (Ru)-catalyzed double annulation of easily accessible N-methoxybenzamide derivatives with unactivated alkynes for the synthesis of unusual 6,6-fused pyranoisoquinolines is described. Both ortho-C-H bonds of arenes and the N- and O-moieties of N-methoxybenzamides are involved in the construction of four [(C-C)-(C-N) and (C-C)-(C-O)] bonds in one step under single catalytic conditions. The unsymmetrical annulation of N-methoxybenzamides with two distinct alkynes is also demonstrated. The oxidizable directing group N-methoxyamine (NHOMe) assists the unsymmetrical double annulations of arenes [that use both N- and O-heteroatoms] in a single operation. This synthetic method features excellent substrate scope and tolerates a wide range of functional groups. Peripheral modification of pyranoisoquinolines for the construction of complex heterocyclic compounds is also demonstrated.
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Affiliation(s)
| | - Majji Shankar
- School of Chemistry , University of Hyderabad , Hyderabad , Telangana 500046 , India
| | - Nagarjuna Kommu
- Advanced Center of Research in High Energy Materials (ACRHEM) , University of Hyderabad , Hyderabad , Telangana 500046 , India
| | - Akhila K Sahoo
- School of Chemistry , University of Hyderabad , Hyderabad , Telangana 500046 , India.,Advanced Center of Research in High Energy Materials (ACRHEM) , University of Hyderabad , Hyderabad , Telangana 500046 , India
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45
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Yang T, Xia WJ, Zhou B, Xin Y, Shen Y, Li YM. The Cascade Methylation/Cyclization of ortho
-Cyanoarylacrylamides with Dicumyl Peroxide. European J Org Chem 2019. [DOI: 10.1002/ejoc.201900918] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- Tao Yang
- Faculty of Life Science and Technology; Kunming University of Science and Technology; 650500 Kunming P. R. China
| | - Wen-Jin Xia
- Faculty of Life Science and Technology; Kunming University of Science and Technology; 650500 Kunming P. R. China
| | - Bin Zhou
- Faculty of Life Science and Technology; Kunming University of Science and Technology; 650500 Kunming P. R. China
| | - Yangchun Xin
- Katzin Diagnostic & Research PET/MR Center; Nemours/Alfred I. DuPont Hospital for Children; 19803 Wilmington DE United States
| | - Yuehai Shen
- Faculty of Life Science and Technology; Kunming University of Science and Technology; 650500 Kunming P. R. China
| | - Ya-Min Li
- Faculty of Life Science and Technology; Kunming University of Science and Technology; 650500 Kunming P. R. China
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46
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Ghosh KK, Uttry A, Koldemir A, Ong M, van Gemmeren M. Direct β-C(sp3)–H Acetoxylation of Aliphatic Carboxylic Acids. Org Lett 2019; 21:7154-7157. [DOI: 10.1021/acs.orglett.9b02741] [Citation(s) in RCA: 39] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Kiron K. Ghosh
- Organisch-Chemisches Institut, Westfälische Wilhelms-Universität Münster, Corrensstraße 40, 48149 Münster, Germany
| | - Alexander Uttry
- Organisch-Chemisches Institut, Westfälische Wilhelms-Universität Münster, Corrensstraße 40, 48149 Münster, Germany
| | - Aylin Koldemir
- Organisch-Chemisches Institut, Westfälische Wilhelms-Universität Münster, Corrensstraße 40, 48149 Münster, Germany
| | - Mike Ong
- Organisch-Chemisches Institut, Westfälische Wilhelms-Universität Münster, Corrensstraße 40, 48149 Münster, Germany
| | - Manuel van Gemmeren
- Organisch-Chemisches Institut, Westfälische Wilhelms-Universität Münster, Corrensstraße 40, 48149 Münster, Germany
- Max Planck Institute for Chemical Energy Conversion, Stiftstraße 34-36, 45470 Mülheim an der Ruhr, Germany
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47
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48
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Morrill LA, Susick RB, Chari JV, Garg NK. Total Synthesis as a Vehicle for Collaboration. J Am Chem Soc 2019; 141:12423-12443. [PMID: 31356068 DOI: 10.1021/jacs.9b05588] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
"Collaboration" is not the first word most would associate with the field of total synthesis. In fact, the spirit of total synthesis is all-too-often reputed as being more competitive, rather than collaborative, sometimes even within individual laboratories. However, recent studies in total synthesis have inspired a number of collaborative efforts that strategically blend synthetic methodology, biocatalysis, biosynthesis, computational chemistry, and drug discovery with complex molecule synthesis. This Perspective highlights select recent advances in these areas, including collaborative syntheses of chlorolissoclimide, nigelladine A, artemisinin, ingenol, hippolachnin A, communesin A, and citrinalin B. The legendary Woodward-Eschenmoser collaboration that led to the total synthesis of vitamin B12 is also discussed.
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Affiliation(s)
- Lucas A Morrill
- Department of Chemistry and Biochemistry , University of California , Los Angeles , California 90095 , United States
| | - Robert B Susick
- Department of Chemistry and Biochemistry , University of California , Los Angeles , California 90095 , United States
| | - Jason V Chari
- Department of Chemistry and Biochemistry , University of California , Los Angeles , California 90095 , United States
| | - Neil K Garg
- Department of Chemistry and Biochemistry , University of California , Los Angeles , California 90095 , United States
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49
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Beyond Friedel and Crafts: Directed Alkylation of C−H Bonds in Arenes. Angew Chem Int Ed Engl 2019; 58:7202-7236. [DOI: 10.1002/anie.201806629] [Citation(s) in RCA: 69] [Impact Index Per Article: 13.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2018] [Revised: 08/13/2018] [Indexed: 11/07/2022]
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50
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Abstract
The first enantioselective total syntheses of highly complex hexacyclic meroterpenoids STR-2 and -9 (strongylophorine (STR)) are reported. Key elements of the synthetic route include the use of Robinson-type annulation reaction to construct the tricyclic terpenoid building block and a highly efficient PIDA-mediated 1,3-diaxial sp3 C-H activation to incorporate the requisite δ-lactone moiety. This route also enables the determination of absolute configuration of the synthesized natural products.
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Affiliation(s)
- Dattatraya H Dethe
- Department of Chemistry , Indian Institute of Technology , Kanpur , Uttar Pradesh 208016 , India
| | - Susanta Kumar Sau
- Department of Chemistry , Indian Institute of Technology , Kanpur , Uttar Pradesh 208016 , India
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