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Huang Z, Akana ME, Sanders KM, Weix DJ. A decarbonylative approach to alkylnickel intermediates and C(sp 3)-C(sp 3) bond formation. Science 2024; 385:1331-1337. [PMID: 39298574 DOI: 10.1126/science.abi4860] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2024] [Accepted: 08/21/2024] [Indexed: 09/22/2024]
Abstract
The myriad nickel-catalyzed cross-coupling reactions rely on the formation of an organonickel intermediate, but limitations in forming monoalkylnickel species have limited options for C(sp3) cross-coupling. The formation of monoalkylnickel(II) species from abundant carboxylic acid esters would be valuable, but carboxylic acid derivatives are primarily decarboxylated to form alkyl radicals that lack the correct reactivity. In this work, we disclose a facile oxidative addition and decarbonylation sequence that forms monoalkylnickel(II) intermediates through a nonradical process. The key ligand, bis(4-methylpyrazole)pyridine, accelerates decarbonylation, stabilizes the alkylnickel(II) intermediate, and destabilizes off-cycle nickel(0) carbonyl species. The utility of this new reactivity in C(sp3)-C(sp3) bond formation is demonstrated in a reaction that is challenging by purely radical methods-the selective cross-coupling of primary carboxylic acid esters with primary alkyl iodides.
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Affiliation(s)
- Zhidao Huang
- Department of Chemistry, University of Wisconsin-Madison, Madison, WI 53706, USA
| | - Michelle E Akana
- Department of Chemistry, University of Wisconsin-Madison, Madison, WI 53706, USA
| | - Kyana M Sanders
- Department of Chemistry, University of Wisconsin-Madison, Madison, WI 53706, USA
| | - Daniel J Weix
- Department of Chemistry, University of Wisconsin-Madison, Madison, WI 53706, USA
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Singh A, Singh K, Kaur K, Singh A, Sharma A, Kaur K, Kaur J, Kaur G, Kaur U, Kaur H, Singh P, Bedi PMS. Coumarin as an Elite Scaffold in Anti-Breast Cancer Drug Development: Design Strategies, Mechanistic Insights, and Structure-Activity Relationships. Biomedicines 2024; 12:1192. [PMID: 38927399 PMCID: PMC11200728 DOI: 10.3390/biomedicines12061192] [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: 05/05/2024] [Revised: 05/24/2024] [Accepted: 05/25/2024] [Indexed: 06/28/2024] Open
Abstract
Breast cancer is the most common cancer among women. Currently, it poses a significant threat to the healthcare system due to the emerging resistance and toxicity of available drug candidates in clinical practice, thus generating an urgent need for the development of new potent and safer anti-breast cancer drug candidates. Coumarin (chromone-2-one) is an elite ring system widely distributed among natural products and possesses a broad range of pharmacological properties. The unique distribution and pharmacological efficacy of coumarins attract natural product hunters, resulting in the identification of numerous natural coumarins from different natural sources in the last three decades, especially those with anti-breast cancer properties. Inspired by this, numerous synthetic derivatives based on coumarins have been developed by medicinal chemists all around the globe, showing promising anti-breast cancer efficacy. This review is primarily focused on the development of coumarin-inspired anti-breast cancer agents in the last three decades, especially highlighting design strategies, mechanistic insights, and their structure-activity relationship. Natural coumarins having anti-breast cancer efficacy are also briefly highlighted. This review will act as a guideline for researchers and medicinal chemists in designing optimum coumarin-based potent and safer anti-breast cancer agents.
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Affiliation(s)
- Atamjit Singh
- Department of Pharmaceutical Sciences, Guru Nanak Dev University, Amritsar 143005, Punjab, India; (K.S.); (A.S.); (K.K.); (J.K.); (G.K.)
| | - Karanvir Singh
- Department of Pharmaceutical Sciences, Guru Nanak Dev University, Amritsar 143005, Punjab, India; (K.S.); (A.S.); (K.K.); (J.K.); (G.K.)
| | | | - Amandeep Singh
- Department of Pharmacology, Penn State Cancer Institute, CH72, Penn State College of Medicine, Penn State Milton S. Hershey Medical Center, 500 University Drive, Hershey, PA 17033, USA;
| | - Aman Sharma
- Department of Pharmaceutical Sciences, Guru Nanak Dev University, Amritsar 143005, Punjab, India; (K.S.); (A.S.); (K.K.); (J.K.); (G.K.)
| | - Kirandeep Kaur
- Department of Pharmaceutical Sciences, Guru Nanak Dev University, Amritsar 143005, Punjab, India; (K.S.); (A.S.); (K.K.); (J.K.); (G.K.)
| | - Jaskirat Kaur
- Department of Pharmaceutical Sciences, Guru Nanak Dev University, Amritsar 143005, Punjab, India; (K.S.); (A.S.); (K.K.); (J.K.); (G.K.)
| | - Gurleen Kaur
- Department of Pharmaceutical Sciences, Guru Nanak Dev University, Amritsar 143005, Punjab, India; (K.S.); (A.S.); (K.K.); (J.K.); (G.K.)
| | - Uttam Kaur
- University School of Business Management, Chandigarh University, Gharuan 140413, Mohali, India;
| | - Harsimran Kaur
- Department of Pharmaceutical Chemistry, Khalsa College of Pharmacy, Amritsar 143005, Punjab, India; (H.K.); (P.S.)
| | - Prabhsimran Singh
- Department of Pharmaceutical Chemistry, Khalsa College of Pharmacy, Amritsar 143005, Punjab, India; (H.K.); (P.S.)
| | - Preet Mohinder Singh Bedi
- Department of Pharmaceutical Sciences, Guru Nanak Dev University, Amritsar 143005, Punjab, India; (K.S.); (A.S.); (K.K.); (J.K.); (G.K.)
- Drug and Pollution Testing Laboratory, Guru Nanak Dev University, Amritsar 143005, Punjab, India
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Frizler M, Mertens MD, Gütschow M. Fluorescent nitrile-based inhibitors of cysteine cathepsins. Bioorg Med Chem Lett 2012; 22:7715-8. [PMID: 23122525 DOI: 10.1016/j.bmcl.2012.09.086] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2012] [Revised: 09/20/2012] [Accepted: 09/25/2012] [Indexed: 01/18/2023]
Abstract
Cysteine cathepsins play an important role in many (patho)physiological conditions. Among them, cathepsins L, S, K and B are subjects of several drug discovery programs. Besides their role as drug targets, cysteine cathepsins are additionally considered to be possible biomarkers for inflammation and cancer. Herein, we describe the design, synthesis, biological evaluation and spectral properties of fluorescently labeled dipeptide- and azadipeptide nitriles.
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Affiliation(s)
- Maxim Frizler
- Pharmaceutical Institute, Pharmaceutical Chemistry I, University of Bonn, An der Immenburg 4, D-53121 Bonn, Germany
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Abstract
Iejimalide B, a structurally unique 24-membered polyene macrolide having a previously underutilized mode of anticancer activity, was synthesized according to a strategy employing Julia-Kocienski olefinations, a palladium-catalyzed Heck reaction, a palladium-catalyzed Marshall propargylation, a Keck-type esterification, and a palladium-catalyzed macrolide-forming, intramolecular Stille coupling of a highly complex cyclization substrate. The overall synthesis is efficient (19.5% overall yield for 15 linear steps) and allows for more practical scaled-up synthesis than previously reported strategies that differed in the order of assembly of key subunits and in the method of macrocyclization. The present synthesis paves the way for efficient preparation of analogues for drug development efforts.
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Affiliation(s)
- Qingshou Chen
- Department of Chemistry and Biochemistry and Harper Cancer Research Center, University of Notre Dame, Notre Dame, Indiana 46556
- Department of Medicinal Chemistry & Molecular Pharmacology, Laboratory for Chemical Biology & Drug Development, Bindley Bioscience Center at Purdue Discovery Park, West Lafayette, IN 47907-2057
| | - Dirk Schweitzer
- Department of Chemistry and Biochemistry and Harper Cancer Research Center, University of Notre Dame, Notre Dame, Indiana 46556
| | - John Kane
- Department of Chemistry and Biochemistry and Harper Cancer Research Center, University of Notre Dame, Notre Dame, Indiana 46556
| | - V. Jo Davisson
- Department of Medicinal Chemistry & Molecular Pharmacology, Laboratory for Chemical Biology & Drug Development, Bindley Bioscience Center at Purdue Discovery Park, West Lafayette, IN 47907-2057
| | - Paul Helquist
- Department of Chemistry and Biochemistry and Harper Cancer Research Center, University of Notre Dame, Notre Dame, Indiana 46556
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Gagnepain J, Moulin E, Nevado C, Waser M, Maier A, Kelter G, Fiebig HH, Fürstner A. Molecular Editing and Assessment of the Cytotoxic Properties of Iejimalide and Progeny. Chemistry 2011; 17:6973-84. [DOI: 10.1002/chem.201100180] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2011] [Indexed: 01/21/2023]
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Gagnepain J, Moulin E, Fürstner A. Gram-Scale Synthesis of Iejimalide B. Chemistry 2011; 17:6964-72. [DOI: 10.1002/chem.201100178] [Citation(s) in RCA: 69] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2011] [Indexed: 02/03/2023]
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Loughrey BT, Williams ML, Carruthers TJ, Parsons PG, Healy PC. Synthesis, Structure, and Selective Cytotoxicity of Organometallic Cp*RuII O-Alkyl-N-phenylcarbamate Sandwich Complexes. Aust J Chem 2010. [DOI: 10.1071/ch09420] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Tetraphenylborate salts of the η6-arene Cp*RuII O-alkyl-N-phenyl carbamate organometallic sandwich complexes, [Cp*Ru(PhNHCO2R)]BPh4 for R = Me (1), Et (2), and n-Pr (3), have been prepared by a facile one-pot reaction between ruthenium trichloride, pentamethylcyclopentadiene, and phenylisocyanate in refluxing alcohol solutions, and have been characterized by Fourier-transform IR and NMR spectroscopy, electrospray mass spectrometry, and single-crystal X-ray structure determinations. In vitro cytotoxicity studies show the complexes to be potent growth inhibitors for a range of tumour cell lines, while expressing significantly lower levels of toxicity towards a normal human fibroblast cell line.
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Blunt JW, Copp BR, Hu WP, Munro MHG, Northcote PT, Prinsep MR. Marine natural products. Nat Prod Rep 2009; 26:170-244. [PMID: 19177222 DOI: 10.1039/b805113p] [Citation(s) in RCA: 410] [Impact Index Per Article: 27.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
This review covers the literature published in 2007 for marine natural products, with 948 citations(627 for the period January to December 2007) referring to compounds isolated from marine microorganisms and phytoplankton, green algae, brown algae, red algae, sponges, cnidarians,bryozoans, molluscs, tunicates, echinoderms and true mangrove plants. The emphasis is on new compounds (961 for 2007), together with the relevant biological activities, source organisms and country of origin. Biosynthetic studies, first syntheses, and syntheses that lead to the revision of structures or stereochemistries, have been included.1 Introduction, 2 Reviews, 3 Marine microorganisms and phytoplankton, 4 Green algae, 5 Brown algae, 6 Red algae, 7 Sponges, 8 Cnidarians, 9 Bryozoans, 10 Molluscs, 11 Tunicates (ascidians),12 Echinoderms, 13 Miscellaneous, 14 Conclusion, 15 References.
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Affiliation(s)
- John W Blunt
- Department of Chemistry, University of Canterbury, Christchurch, New Zealand.
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Kuramochi K, Yukizawa S, Ikeda S, Sunoki T, Arai S, Matsui R, Morita A, Mizushina Y, Sakaguchi K, Sugawara F, Ikekita M, Kobayashi S. Syntheses and applications of fluorescent and biotinylated epolactaene derivatives: Epolactaene and its derivative induce disulfide formation. Bioorg Med Chem 2008; 16:5039-49. [DOI: 10.1016/j.bmc.2008.03.029] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2008] [Revised: 03/10/2008] [Accepted: 03/11/2008] [Indexed: 11/27/2022]
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Schweitzer D, Kane JJ, Strand D, McHenry P, Tenniswood M, Helquist P. Total Synthesis of Iejimalide B. An Application of the Shiina Macrolactonization. Org Lett 2007; 9:4619-22. [DOI: 10.1021/ol702129w] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Dirk Schweitzer
- Department of Chemistry and Biochemistry and Walther Cancer Research Center and Department of Biological Sciences, University of Notre Dame, Notre Dame, Indiana 46556
| | - John J. Kane
- Department of Chemistry and Biochemistry and Walther Cancer Research Center and Department of Biological Sciences, University of Notre Dame, Notre Dame, Indiana 46556
| | - Daniel Strand
- Department of Chemistry and Biochemistry and Walther Cancer Research Center and Department of Biological Sciences, University of Notre Dame, Notre Dame, Indiana 46556
| | - Peter McHenry
- Department of Chemistry and Biochemistry and Walther Cancer Research Center and Department of Biological Sciences, University of Notre Dame, Notre Dame, Indiana 46556
| | - Martin Tenniswood
- Department of Chemistry and Biochemistry and Walther Cancer Research Center and Department of Biological Sciences, University of Notre Dame, Notre Dame, Indiana 46556
| | - Paul Helquist
- Department of Chemistry and Biochemistry and Walther Cancer Research Center and Department of Biological Sciences, University of Notre Dame, Notre Dame, Indiana 46556
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Fürstner A, Nevado C, Waser M, Tremblay M, Chevrier C, Teplý F, Aïssa C, Moulin E, Müller O. Total Synthesis of Iejimalide A−D and Assessment of the Remarkable Actin-Depolymerizing Capacity of These Polyene Macrolides. J Am Chem Soc 2007; 129:9150-61. [PMID: 17602484 DOI: 10.1021/ja072334v] [Citation(s) in RCA: 128] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
A concise and convergent total synthesis of the highly cytotoxic marine natural products iejimalide A-D (1-4) is reported, which relies on an effective ring-closing metathesis (RCM) reaction of a cyclization precursor containing no less than 10 double bonds. Because of the exceptional sensitivity of this polyunsaturated intermediate and its immediate precursors toward acid, base, and even gentle warming, the assembly process hinged upon the judicious choice of protecting groups and the careful optimization of all individual transformations. As a consequence, particularly mild protocols for Stille as well as Suzuki reactions of elaborate coupling partners have been developed that hold considerable promise for applications in other complex settings. Moreover, a series of non-natural "iejimalide-like" compounds has been prepared, differing from the natural lead in the polar head groups linked to the macrolide's N-terminus. With the aid of these compounds it was possible to uncover the hitherto unknown effect of iejimalide and analogues on the actin cytoskeleton. Their capacity to depolymerize this microfilament network rivals that of the latrunculins which constitute the standard in the field. Structural modifications of the peptidic terminus in 2 are thereby well accommodated, without compromising the biological effects. The iejimalides hence constitute an important new class of probe molecules for chemical biology in addition to their role as promising lead structures for the development of novel anticancer agents.
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Affiliation(s)
- Alois Fürstner
- Max-Planck-Institut für Kohlenforschung, D-45470 Mülheim/Ruhr, Germany.
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