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Chen W, Jiang J, Wang J. Asymmetric Ruthenium-Catalyzed C-H Activation by a Versatile Chiral-Amide-Directing Strategy. Angew Chem Int Ed Engl 2024; 63:e202316741. [PMID: 38102747 DOI: 10.1002/anie.202316741] [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: 11/03/2023] [Revised: 12/15/2023] [Accepted: 12/15/2023] [Indexed: 12/17/2023]
Abstract
A versatile and readily available chiral amide directing group has been developed for the ruthenium(II)-catalyzed asymmetric C-H activation. Asymmetric C-H activation of the related chiral benzamides with various olefins, aldehydes and propargylic alcohols has been accomplished with high stereoselectivities, affording a series of chiral products including 3,4-dihydroisocoumarins (up to 96 % ee), isocoumarins (up to 92 % ee), phthalides (up to 99 % ee), chiral bicyclo[2.2.1]heptanes (>20 : 1 dr), 4-alkylidene-3,4-dihydroisocoumarins (up to 97 % ee) and allenes (>20 : 1 dr). Importantly, our methodologies enabled concise syntheses of many biologically active compounds and natural products (e.g., Montroumarin, Cyclosporone E, Cyclosporone Q, Concentricolide, Chuangxinol, and Eleutherol).
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Affiliation(s)
- Wenkun Chen
- School of Chemistry, Key Laboratory of Bioinorganic and Synthetic Chemistry of Ministry of Education, Guangdong Key Laboratory of Chiral Molecule and Drug Discovery, Sun Yat-Sen University, 510006, Guangzhou, P. R. China
| | - Jijun Jiang
- School of Chemistry, Key Laboratory of Bioinorganic and Synthetic Chemistry of Ministry of Education, Guangdong Key Laboratory of Chiral Molecule and Drug Discovery, Sun Yat-Sen University, 510006, Guangzhou, P. R. China
| | - Jun Wang
- School of Chemistry, Key Laboratory of Bioinorganic and Synthetic Chemistry of Ministry of Education, Guangdong Key Laboratory of Chiral Molecule and Drug Discovery, Sun Yat-Sen University, 510006, Guangzhou, P. R. China
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Sadıkoğulları BC, Şenel P, Çini N, Faysal AA, Odabaşoğlu M, Özdemir AD, Gölcü A. An Overview of Natural and Synthetic Phthalides Involved in Cancer Studies: Past, Present, and Future. ChemistrySelect 2022. [DOI: 10.1002/slct.202202004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Bleda Can Sadıkoğulları
- Istanbul Technical University Faculty of Sciences and Letters Department of Chemistry Istanbul 34469 Turkey
| | - Pelin Şenel
- Istanbul Technical University Faculty of Sciences and Letters Department of Chemistry Istanbul 34469 Turkey
| | - Nejla Çini
- Istanbul Technical University Faculty of Sciences and Letters Department of Chemistry Istanbul 34469 Turkey
| | - Abdullah Al Faysal
- Istanbul Technical University Faculty of Sciences and Letters Department of Chemistry Istanbul 34469 Turkey
| | - Mustafa Odabaşoğlu
- Karadeniz Technical University Faculty of Sciences and Letters Department of Chemistry Trabzon 61080 Turkey
| | - Ayşe Daut Özdemir
- Istanbul Technical University Faculty of Sciences and Letters Department of Chemistry Istanbul 34469 Turkey
| | - Ayşegül Gölcü
- Istanbul Technical University Faculty of Sciences and Letters Department of Chemistry Istanbul 34469 Turkey
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Rhytidhylides A and B, Two New Phthalide Derivatives from the Endophytic Fungus Rhytidhysteron sp. BZM-9. Molecules 2021; 26:molecules26206092. [PMID: 34684677 PMCID: PMC8540479 DOI: 10.3390/molecules26206092] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2021] [Revised: 10/03/2021] [Accepted: 10/06/2021] [Indexed: 01/19/2023] Open
Abstract
Two new phthalide derivatives, rhytidhylides A (1) and B (2), together with ten known compounds (3–12) were isolated from cultures of Rhytidhysteron sp. BZM-9, an endophyte isolated from the leaves of Leptospermum brachyandrum. Their structures were identified by an extensive analysis of NMR, HRESIMS, ECD, and through comparison with data reported in the literature. In addition, the cytotoxic activities against two human hepatoma cell lines (HepG2 and SMMC7721) and antibacterial activities against MRSA and E. coli were evaluated.
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Liu Y, Majhi PK, Song R, Mou C, Hao L, Chai H, Jin Z, Chi YR. Carbene‐Catalyzed Dynamic Kinetic Resolution and Asymmetric Acylation of Hydroxyphthalides and Related Natural Products. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.201912926] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Affiliation(s)
- Yingguo Liu
- Nanyang Technological University Division of Chemistry & Biological Chemistry School of Physical & Mathematical Sciences Singapore 637371 Singapore
| | - Pankaj Kumar Majhi
- Nanyang Technological University Division of Chemistry & Biological Chemistry School of Physical & Mathematical Sciences Singapore 637371 Singapore
| | - Runjiang Song
- Nanyang Technological University Division of Chemistry & Biological Chemistry School of Physical & Mathematical Sciences Singapore 637371 Singapore
| | - Chengli Mou
- School of Pharmacy Guizhou University of Traditional Chinese Medicine Huaxi District Guiyang Guizhou 550025 China
| | - Lin Hao
- Nanyang Technological University Division of Chemistry & Biological Chemistry School of Physical & Mathematical Sciences Singapore 637371 Singapore
| | - Huifang Chai
- School of Pharmacy Guizhou University of Traditional Chinese Medicine Huaxi District Guiyang Guizhou 550025 China
| | - Zhichao Jin
- Key Laboratory of Green Pesticide and Agricultural Bioengineering Ministry of Education Guizhou University Huaxi District Guiyang 550025 China
| | - Yonggui Robin Chi
- Nanyang Technological University Division of Chemistry & Biological Chemistry School of Physical & Mathematical Sciences Singapore 637371 Singapore
- Key Laboratory of Green Pesticide and Agricultural Bioengineering Ministry of Education Guizhou University Huaxi District Guiyang 550025 China
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Liu Y, Majhi PK, Song R, Mou C, Hao L, Chai H, Jin Z, Chi YR. Carbene-Catalyzed Dynamic Kinetic Resolution and Asymmetric Acylation of Hydroxyphthalides and Related Natural Products. Angew Chem Int Ed Engl 2020; 59:3859-3863. [PMID: 31867859 DOI: 10.1002/anie.201912926] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2019] [Revised: 12/12/2019] [Indexed: 01/08/2023]
Abstract
A catalytic dynamic kinetic resolution and asymmetric acylation reaction of hydroxyphthalides is developed. The reaction involves formation of a carbene catalyst derived chiral acyl azolium intermediate that effectively differentiates the two enantiomers of racemic hydroxyphthalides. The method allows quick access to enantiomerically enriched phthalidyl esters with proven applications in medicine. It also enables asymmetric modification of natural products and other functional molecules that contain acetal/ketal groups, such as corollosporine and fimbricalyxlactone C.
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Affiliation(s)
- Yingguo Liu
- Nanyang Technological University, Division of Chemistry & Biological Chemistry, School of Physical & Mathematical Sciences, Singapore, 637371, Singapore
| | - Pankaj Kumar Majhi
- Nanyang Technological University, Division of Chemistry & Biological Chemistry, School of Physical & Mathematical Sciences, Singapore, 637371, Singapore
| | - Runjiang Song
- Nanyang Technological University, Division of Chemistry & Biological Chemistry, School of Physical & Mathematical Sciences, Singapore, 637371, Singapore
| | - Chengli Mou
- School of Pharmacy, Guizhou University of Traditional Chinese Medicine, Huaxi District, Guiyang, Guizhou, 550025, China
| | - Lin Hao
- Nanyang Technological University, Division of Chemistry & Biological Chemistry, School of Physical & Mathematical Sciences, Singapore, 637371, Singapore
| | - Huifang Chai
- School of Pharmacy, Guizhou University of Traditional Chinese Medicine, Huaxi District, Guiyang, Guizhou, 550025, China
| | - Zhichao Jin
- Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Guizhou University, Huaxi District, Guiyang, 550025, China
| | - Yonggui Robin Chi
- Nanyang Technological University, Division of Chemistry & Biological Chemistry, School of Physical & Mathematical Sciences, Singapore, 637371, Singapore.,Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Guizhou University, Huaxi District, Guiyang, 550025, China
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Phthalides: Distribution in Nature, Chemical Reactivity, Synthesis, and Biological Activity. PROGRESS IN THE CHEMISTRY OF ORGANIC NATURAL PRODUCTS 104 2017; 104:127-246. [DOI: 10.1007/978-3-319-45618-8_2] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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Shen T, Liu XB, Zhang W. Calocephalactone: A New Phthalide Derivative from the Root ofLeontopodium calocephalum. J CHIN CHEM SOC-TAIP 2016. [DOI: 10.1002/jccs.201500280] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Potterat O, Hamburger M. Concepts and technologies for tracking bioactive compounds in natural product extracts: generation of libraries, and hyphenation of analytical processes with bioassays. Nat Prod Rep 2013; 30:546-64. [DOI: 10.1039/c3np20094a] [Citation(s) in RCA: 102] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
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Tianpanich K, Prachya S, Wiyakrutta S, Mahidol C, Ruchirawat S, Kittakoop P. Radical scavenging and antioxidant activities of isocoumarins and a phthalide from the endophytic fungus Colletotrichum sp. JOURNAL OF NATURAL PRODUCTS 2011; 74:79-81. [PMID: 21174408 DOI: 10.1021/np1003752] [Citation(s) in RCA: 60] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
Five known isocoumarins, monocerin (1), derivative 2, and fusarentin derivatives 3-5, and a new phthalide (6) were isolated from the endophytic fungus Colletotrichum sp. 2 selectively exhibited cytotoxic activity toward the HepG2 cell line. Compounds 2 and 4 scavenged 2,2-diphenyl-1-picrylhydrazyl (DPPH) free radicals (IC(50) values of 23.4 and 16.4 μM, respectively) and inhibited superoxide anion radical formation (IC(50) values of 52.6 and 4.3 μM, respectively). The C-7 hydroxyl group in 2 and 4 might be important for radical scavenging activities. Isocoumarins 1-3 and phthalide 6 showed potent antioxidant activity.
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Vuignier K, Schappler J, Veuthey JL, Carrupt PA, Martel S. Drug-protein binding: a critical review of analytical tools. Anal Bioanal Chem 2010; 398:53-66. [PMID: 20454782 DOI: 10.1007/s00216-010-3737-1] [Citation(s) in RCA: 271] [Impact Index Per Article: 19.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2010] [Revised: 04/08/2010] [Accepted: 04/08/2010] [Indexed: 11/26/2022]
Abstract
The extent of drug binding to plasma proteins, determined by measuring the free active fraction, has a significant effect on the pharmacokinetics and pharmacodynamics of a drug. It is therefore highly important to estimate drug-binding ability to these macromolecules in the early stages of drug discovery and in clinical practice. Traditionally, equilibrium dialysis is used, and is presented as the reference method, but it suffers from many drawbacks. In an attempt to circumvent these, a vast array of different methods has been developed. This review focuses on the most important approaches used to characterize drug-protein binding. A description of the principle of each method with its inherent strengths and weaknesses is outlined. The binding affinity ranges, information accessibility, material consumption, and throughput are compared for each method. Finally, a discussion is included to help users choose the most suitable approach from among the wealth of methods presented.
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Affiliation(s)
- Karine Vuignier
- School of Pharmaceutical Sciences, University of Geneva, University of Lausanne, Quai E-Ansermet 30, 1211 Geneva 4, Switzerland
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Gullo VP, McAlpine J, Lam KS, Baker D, Petersen F. Drug discovery from natural products. J Ind Microbiol Biotechnol 2006; 33:523-31. [PMID: 16544162 DOI: 10.1007/s10295-006-0107-2] [Citation(s) in RCA: 93] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2005] [Accepted: 02/10/2006] [Indexed: 05/07/2023]
Abstract
Natural product compounds are the source of numerous therapeutic agents. Recent progress to discover drugs from natural product sources has resulted in compounds that are being developed to treat cancer, resistant bacteria and viruses and immunosuppressive disorders. Many of these compounds were discovered by applying recent advances in understanding the genetics of secondary metabolism in actinomycetes, exploring the marine environment and applying new screening technologies. In many instances, the discovery of a novel natural product serves as a tool to better understand targets and pathways in the disease process. This review describes recent progress in drug discovery from natural sources including several examples of compounds that inhibit novel drug targets.
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Affiliation(s)
- Vincent P Gullo
- Cetek Corporation, 260 Cedar Hill Street, Marlborough, MA 01752, USA.
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Gullo VP, Hughes DE. Exploiting new approaches for natural product drug discovery in the biotechnology industry. DRUG DISCOVERY TODAY. TECHNOLOGIES 2005; 2:281-286. [PMID: 24981948 DOI: 10.1016/j.ddtec.2005.08.002] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
In recent years, large pharmaceutical companies have significantly reduced or eliminated the search for new therapeutic agents from natural sources. In spite of the many successes from natural product drug discovery, these companies have chosen to focus on compound libraries as the source of new lead compounds. Smaller biotechnology companies are continuing the search for novel natural products by developing and employing new and innovative approaches. This paper will describe some of these recent approaches to natural product drug discovery.:
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Affiliation(s)
- Vincent P Gullo
- Cetek Corporation, 260 Cedar Hill Street, Marlboro, MA 01752, USA.
| | - Dallas E Hughes
- Cetek Corporation, 260 Cedar Hill Street, Marlboro, MA 01752, USA
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