1
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Ghosh A, Lipisa YB, Fridman N, Szpilman AM. 2-Nitro-cyclopropyl-1-carbonyl Compounds from Unsaturated Carbonyl Compounds and Nitromethane via Enolonium Species. J Org Chem 2023; 88:1977-1987. [PMID: 36749318 DOI: 10.1021/acs.joc.2c02125] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
2-Nitrocyclopropanes bearing ketones, amides, esters, and carboxylic acids in the 1 position may be accessed as single diastereoisomers in one operation from the corresponding unsaturated carbonyl compounds. The source of the nitro-methylene component is nitromethane. The reaction proceeds at room temperature under mild conditions. The products may be converted into, e.g., cyclopropyl-amino acids in a single step. Both nitrocyclopropanes and amino-cyclopropanes are unique moieties found in biologically active compounds and natural products.
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Affiliation(s)
- Asit Ghosh
- Department of Chemical Sciences, Ariel University, Ariel 4070000, Israel
| | - Yuriy B Lipisa
- Department of Chemical Sciences, Ariel University, Ariel 4070000, Israel
| | - Natalia Fridman
- Schulich Faculty of Chemistry, Technion-Israel Institute of Technology, Haifa 3200009, Israel
| | - Alex M Szpilman
- Department of Chemical Sciences, Ariel University, Ariel 4070000, Israel
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2
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Engelbrecht A, Wolf F, Esch A, Kulik A, Kozhushkov SI, de Meijere A, Hughes CC, Kaysser L. Discovery of a Cryptic Nitro Intermediate in the Biosynthesis of the 3-( trans-2'-Aminocyclopropyl)alanine Moiety of Belactosin A. Org Lett 2022; 24:736-740. [PMID: 34990553 DOI: 10.1021/acs.orglett.1c04205] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Belactosin A, a β-lactone proteasome inhibitor, contains a unique 3-(trans-2'-aminocyclopropyl)alanine moiety. We recently identified the biosynthetic gene cluster of the belactosin series from Streptomyces sp. UCK14. To shed light on the formation of the aminocyclopropylalanine, we established a heterologous pathway expression, constructed a set of gene deletion mutants, and performed feeding studies for a chemical complementation that include the incorporation of stable isotope-labeled precursors. We thereby show that, in the biosynthesis of this building block, a cryptic nitrocyclopropylalanine intermediate is generated from l-lysine. The subsequent reduction of the N-oxygenated precursor to the corresponding amine is mediated by the molybdopterin-dependent enzyme BelN.
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Affiliation(s)
- Alicia Engelbrecht
- Department of Pharmaceutical Biology, University of Tübingen, 72076 Tübingen, Germany
- German Center for Infection Research, Partner Site Tübingen, 72076 Tübingen, Germany
| | - Felix Wolf
- Department of Pharmaceutical Biology, University of Tübingen, 72076 Tübingen, Germany
- German Center for Infection Research, Partner Site Tübingen, 72076 Tübingen, Germany
| | - Annika Esch
- Department of Microbial Bioactive Compounds, Interfaculty Institute for Microbiology and Infection Medicine, University of Tübingen, 72076 Tübingen, Germany
- Cluster of Excellence EXC 2124: Controlling Microbes to Fight Infection, University of Tübingen, 72076 Tübingen, Germany
| | - Andreas Kulik
- Department of Microbial Bioactive Compounds, Interfaculty Institute for Microbiology and Infection Medicine, University of Tübingen, 72076 Tübingen, Germany
| | - Sergei I Kozhushkov
- Institute for Organic and Biomolecular Chemistry, University of Göttingen, 37077 Göttingen, Germany
| | - Armin de Meijere
- Institute for Organic and Biomolecular Chemistry, University of Göttingen, 37077 Göttingen, Germany
| | - Chambers C Hughes
- German Center for Infection Research, Partner Site Tübingen, 72076 Tübingen, Germany
- Department of Microbial Bioactive Compounds, Interfaculty Institute for Microbiology and Infection Medicine, University of Tübingen, 72076 Tübingen, Germany
- Cluster of Excellence EXC 2124: Controlling Microbes to Fight Infection, University of Tübingen, 72076 Tübingen, Germany
| | - Leonard Kaysser
- Department of Pharmaceutical Biology, University of Tübingen, 72076 Tübingen, Germany
- German Center for Infection Research, Partner Site Tübingen, 72076 Tübingen, Germany
- Institute for Drug Discovery, Department of Pharmaceutical Biology, University of Leipzig, 04317 Leipzig, Germany
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3
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Del Giudice D, Spatola E, Valentini M, Bombelli C, Ercolani G, Di Stefano S. Time-programmable pH: decarboxylation of nitroacetic acid allows the time-controlled rising of pH to a definite value. Chem Sci 2021; 12:7460-7466. [PMID: 34163836 PMCID: PMC8171335 DOI: 10.1039/d1sc01196k] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2021] [Accepted: 04/21/2021] [Indexed: 12/24/2022] Open
Abstract
In this report it is shown that nitroacetic acid 1 (O2NCH2CO2H) can be conveniently used to control the pH of a water solution over time. Time-programmable sequences of the kind pH1(high)-pH2(low)-pH3(high) can be achieved, where both the extent of the initial pH jump (pH1(high)-pH2(low)) and the time required for the subsequent pH rising (pH2(low)-pH3(high)) can be predictably controlled by a judicious choice of the absolute and relative concentrations of the reagents (acid 1 and NaOH). Successive pH1(high)-pH2(low)-pH3(high) sequences can be obtained by subsequent additions of acid 1. As a proof of concept, the method is applied to control over time the pH-dependent host-guest interaction between alpha-cyclodextrin and p-aminobenzoic acid.
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Affiliation(s)
- Daniele Del Giudice
- Dipartimento di Chimica, Università degli Studi di Roma "La Sapienza" P.le A. Moro 5 I-00185 Rome Italy
- ISB-CNR Sede Secondaria di Roma - Meccanismi di Reazione c/o Dipartimento di Chimica, Università degli Studi di Roma "La Sapienza" P.le A. Moro 5 I-00185 Rome Italy
| | - Emanuele Spatola
- Dipartimento di Chimica, Università degli Studi di Roma "La Sapienza" P.le A. Moro 5 I-00185 Rome Italy
- ISB-CNR Sede Secondaria di Roma - Meccanismi di Reazione c/o Dipartimento di Chimica, Università degli Studi di Roma "La Sapienza" P.le A. Moro 5 I-00185 Rome Italy
| | - Matteo Valentini
- Dipartimento di Chimica, Università degli Studi di Roma "La Sapienza" P.le A. Moro 5 I-00185 Rome Italy
| | - Cecilia Bombelli
- ISB-CNR Sede Secondaria di Roma - Meccanismi di Reazione c/o Dipartimento di Chimica, Università degli Studi di Roma "La Sapienza" P.le A. Moro 5 I-00185 Rome Italy
| | - Gianfranco Ercolani
- Dipartimento di Scienze e Tecnologie Chimiche, Università di Roma Tor Vergata Via della Ricerca Scientifica 00133 Rome Italy
| | - Stefano Di Stefano
- Dipartimento di Chimica, Università degli Studi di Roma "La Sapienza" P.le A. Moro 5 I-00185 Rome Italy
- ISB-CNR Sede Secondaria di Roma - Meccanismi di Reazione c/o Dipartimento di Chimica, Università degli Studi di Roma "La Sapienza" P.le A. Moro 5 I-00185 Rome Italy
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4
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Corsi M, Magnolfi S, Machetti F. Transesterification of Methyl 2-Nitroacetate to Superior Esters. European J Org Chem 2020. [DOI: 10.1002/ejoc.202000050] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Massimo Corsi
- Dipartimento di Chimica “Ugo Schiff” dell' Università degli Studi di Firenze; via Della Lastruccia 13 50019 Sesto Fiorentino Firenze Italy
| | - Stefano Magnolfi
- Istituto di Chimica dei Composti Organometallici (ICCOM) del Consiglio Nazionale delle Ricerche (CNR); c/o Dipartimento di Chimica “Ugo Schiff” dell' Università degli Studi di Firenze; via Della Lastruccia 13 50019 Sesto Fiorentino Firenze Italy
| | - Fabrizio Machetti
- Istituto di Chimica dei Composti Organometallici (ICCOM) del Consiglio Nazionale delle Ricerche (CNR); c/o Dipartimento di Chimica “Ugo Schiff” dell' Università degli Studi di Firenze; via Della Lastruccia 13 50019 Sesto Fiorentino Firenze Italy
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5
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Phipps EJT, Piou T, Rovis T. Rh(III)-Catalyzed Cyclopropanation of Unactivated Olefins Initiated by C-H Activation. Synlett 2019; 30:1787-1790. [PMID: 32801480 PMCID: PMC7428168 DOI: 10.1055/s-0039-1690130] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Abstract
We have developed a Rh(III)-catalyzed cyclopropanation of unactivated olefins initiated by an alkenyl C-H activation. A variety of 1,1-disubstituted olefins undergo efficient cyclopropanation with a slight excess of alkene stoichiometry. A series of mechanistic interrogations implicate a metal-carbene as an intermediate.
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Affiliation(s)
- Erik J T Phipps
- Department of Chemistry, Columbia University, New York, NY, 10027, USA
| | - Tiffany Piou
- Department of Chemistry, Columbia University, New York, NY, 10027, USA
| | - Tomislav Rovis
- Department of Chemistry, Columbia University, New York, NY, 10027, USA
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6
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Yashin NV, Tikhomirova NE, Sedenkova KN, Vasilenko DA, Grishin YK, Kuznetsova TS, Averina EB. Novel synthetic approach to non-natural conformationally rigid spiro-linked amino acids. Russ Chem Bull 2019. [DOI: 10.1007/s11172-019-2452-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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7
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Atashkar B, Zolfigol MA, Mallakpour S. Applications of biological urea-based catalysts in chemical processes. MOLECULAR CATALYSIS 2018. [DOI: 10.1016/j.mcat.2018.03.009] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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8
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Ribaucourt A, Towers C, Josa‐Culleré L, Willenbrock F, Thompson AL, Hodgson DM. Aruncin B: Synthetic Studies, Structural Reassignment and Biological Evaluation. Chemistry 2017; 23:16525-16534. [PMID: 28815753 PMCID: PMC5725683 DOI: 10.1002/chem.201702949] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2017] [Indexed: 11/15/2022]
Abstract
A ring-closing alkene metathesis (RCM)/ oxyselenation-selenoxide elimination sequence was established to the sodium salts E- and Z-25 of the originally proposed structure for the recently isolated cytotoxin aruncin B (1), as well as to the sodium salt Z-34 of a related ethyl ether regioisomer; however, none of their corresponding free acids could be obtained. Their acid sensitivity, together with detailed analysis of the spectroscopic data indicated that profound structural revision was necessary. This led to reassignment of aruncin B as a Z-γ-alkylidenebutenolide Z-36. Although a related RCM/ oxyselenation-selenoxide elimination sequence was used to confirm the γ-alkylidenebutenolide motif, a β-iodo Morita-Baylis-Hillman reaction/ Sonogashira cross-coupling-5-exo-dig lactonisation sequence was subsequently developed, due to its brevity and flexibility for diversification. Aruncin B (36), together with 14 γ-alkylidenebutenolide analogues, were generated for biological evaluation.
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Affiliation(s)
- Aubert Ribaucourt
- Department of ChemistryUniversity of Oxford, Chemistry Research LaboratoryMansfield RoadOxfordOX1 3TAUK
| | - Christopher Towers
- Department of OncologyUniversity of Oxford, Old Road Campus Research BuildingOxfordOX3 7DQUK
| | - Laia Josa‐Culleré
- Department of ChemistryUniversity of Oxford, Chemistry Research LaboratoryMansfield RoadOxfordOX1 3TAUK
| | - Frances Willenbrock
- Department of OncologyUniversity of Oxford, Old Road Campus Research BuildingOxfordOX3 7DQUK
| | - Amber L. Thompson
- Department of ChemistryUniversity of Oxford, Chemistry Research LaboratoryMansfield RoadOxfordOX1 3TAUK
| | - David M. Hodgson
- Department of ChemistryUniversity of Oxford, Chemistry Research LaboratoryMansfield RoadOxfordOX1 3TAUK
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9
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Yashin NV, Averina EB, Vasilenko DA, Grishin YK, Osolodkin DI, Palyulin VA, Kuznetsova TS, Zefirov NS. Synthesis of novel non-natural spiro[2.3]hexane amino acids, the conformationally restricted analogs of γ-aminobutyric acid. Russ Chem Bull 2017. [DOI: 10.1007/s11172-017-1912-7] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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10
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Abdul Fattah T, Saeed A. Applications of Keck allylation in the synthesis of natural products. NEW J CHEM 2017. [DOI: 10.1039/c7nj02799k] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
This review highlights the applications of the versatile Keck allylation reaction in the construction of important key fragments of medicinally important natural products.
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Affiliation(s)
| | - Aamer Saeed
- Department of Chemistry Quaid-i-Azam University
- Islamabad-45320
- Pakistan
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11
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Synthesis of novel non-natural conformationally restricted cyclopropane amino acids of spirane series. Russ Chem Bull 2016. [DOI: 10.1007/s11172-015-1135-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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12
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Baumann DO, McGowan KM, Kedei N, Peach ML, Blumberg PM, Keck GE. Synthesis and Biological Evaluation of Several Bryostatin Analogues Bearing a Diacylglycerol Lactone C-Ring. J Org Chem 2016; 81:7862-83. [PMID: 27494208 PMCID: PMC6957265 DOI: 10.1021/acs.joc.6b01516] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
As an initial step in designing a simplified bryostatin hybrid molecule, three bryostatin analogues bearing a diacylglycerol lactone-based C-ring, which possessed the requisite pharmacophores for binding to protein kinase C (PKC) together with a modified bryostatin-like A- and B-ring region, were synthesized and evaluated. Merle 46 and Merle 47 exhibited binding affinity to PKC alpha with Ki values of 7000 ± 990 and 4940 ± 470 nM, respectively. Reinstallation of the trans-olefin and gem-dimethyl group present in bryostatin 1 in Merle 48 resulted in improved binding affinity, 363 ± 42 nM. While Merle 46 and 47 were only marginally active biologically, Merle 48 showed sufficient activity on the U937 cells to confirm that it was PMA-like for growth and attachment, as predicted by the substitution pattern of its A- and B-rings.
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Affiliation(s)
- David O. Baumann
- Department of Chemistry, University of Utah, 315 S 1300 E, RM 2020, Salt Lake City, Utah 84112, United States
| | - Kevin M. McGowan
- Department of Chemistry, University of Utah, 315 S 1300 E, RM 2020, Salt Lake City, Utah 84112, United States
| | - Noemi Kedei
- Laboratory of Cancer Biology and Genetics, Center for Cancer Research, National Cancer Institute, Bethesda, Maryland 20892-4255, United States
| | - Megan L. Peach
- Basic Science Program, Leidos Biomedical Research, Inc., Chemical Biology Laboratory, Frederick National Laboratory for Cancer Research, Frederick, Maryland 21702, United States
| | - Peter M. Blumberg
- Laboratory of Cancer Biology and Genetics, Center for Cancer Research, National Cancer Institute, Bethesda, Maryland 20892-4255, United States
| | - Gary E. Keck
- Department of Chemistry, University of Utah, 315 S 1300 E, RM 2020, Salt Lake City, Utah 84112, United States
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13
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Ribaucourt A, Hodgson DM. Total Synthesis and Structural Revision of the Cytotoxin Aruncin B. Org Lett 2016; 18:4364-7. [DOI: 10.1021/acs.orglett.6b02120] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Aubert Ribaucourt
- Department of Chemistry,
Chemistry Research Laboratory, University of Oxford, Mansfield
Road, Oxford OX1 3TA, U.K
| | - David M. Hodgson
- Department of Chemistry,
Chemistry Research Laboratory, University of Oxford, Mansfield
Road, Oxford OX1 3TA, U.K
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14
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Kamimura A, Moriyama T, Ito Y, Kawamoto T, Uno H. Asymmetric Synthesis of Bicyclic Nitrocyclopropanes from Primary Nitro Compounds and Stereoselective Formation of Tetrahydro-2H-cyclopenta[b]furans via Ring Expansion/Cyclization Reaction. J Org Chem 2016; 81:4664-81. [DOI: 10.1021/acs.joc.6b00566] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Affiliation(s)
- Akio Kamimura
- Department
of Applied Molecular Bioscience, Graduate School of Medicine, Yamaguchi University, Ube 755-8611, Japan
| | - Takaaki Moriyama
- Department
of Applied Molecular Bioscience, Graduate School of Medicine, Yamaguchi University, Ube 755-8611, Japan
| | - Yuji Ito
- Department
of Applied Molecular Bioscience, Graduate School of Medicine, Yamaguchi University, Ube 755-8611, Japan
| | - Takuji Kawamoto
- Department
of Applied Molecular Bioscience, Graduate School of Medicine, Yamaguchi University, Ube 755-8611, Japan
| | - Hidemitsu Uno
- Department
of Chemistry, Graduate School of Science and Engineering, Ehime University, Matsuyama 790-8577, Japan
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15
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Joshi-Pangu A, Cohen RD, Tudge MT, Chen Y. Dearomatization of Electron-Deficient Nitrogen Heterocycles via Cobalt-Catalyzed Asymmetric Cyclopropanation. J Org Chem 2016; 81:3070-5. [DOI: 10.1021/acs.joc.6b00322] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Affiliation(s)
- Amruta Joshi-Pangu
- Department of Process & Analytical Chemistry, Merck & Co., Inc. P.O. Box 2000, Rahway, New Jersey 07065, United States
| | - Ryan D. Cohen
- Department of Process & Analytical Chemistry, Merck & Co., Inc. P.O. Box 2000, Rahway, New Jersey 07065, United States
| | - Matthew T. Tudge
- Department of Process & Analytical Chemistry, Merck & Co., Inc. P.O. Box 2000, Rahway, New Jersey 07065, United States
| | - Yonggang Chen
- Department of Process & Analytical Chemistry, Merck & Co., Inc. P.O. Box 2000, Rahway, New Jersey 07065, United States
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16
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Ford A, Miel H, Ring A, Slattery CN, Maguire AR, McKervey MA. Modern Organic Synthesis with α-Diazocarbonyl Compounds. Chem Rev 2015; 115:9981-10080. [PMID: 26284754 DOI: 10.1021/acs.chemrev.5b00121] [Citation(s) in RCA: 1093] [Impact Index Per Article: 121.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
| | - Hugues Miel
- Almac Discovery Ltd. , David Keir Building, Stranmillis Road, Belfast BT9 5AG, United Kingdom
| | | | | | | | - M Anthony McKervey
- Almac Sciences Ltd. , Almac House, 20 Seagoe Industrial Estate, Craigavon BT63 5QD, United Kingdom
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17
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Pan XH, Jiang P, Jia ZH, Xu K, Cao J, Chen C, Shen MH, Xu HD. Expedient catalytic construction of azabicyclo[4.1.0]/[5.1.0] carbaldehydes via intramolecular cyclopropanation. Tetrahedron 2015. [DOI: 10.1016/j.tet.2015.05.113] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
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18
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Mo S, Huang P, Xu J. Cascade nitrosation and addition-elimination of nitroacetanilides for the highly efficient synthesis of 1,4,2,5-dioxadiazine derivatives. Org Biomol Chem 2014; 12:4192-200. [PMID: 24834446 DOI: 10.1039/c3ob42487a] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
A domino nitrosation and addition-elimination of nitroacetanilides with NaNO2 and H2SO4 has been developed to synthesize a variety of 1,4,2,5-dioxadiazine-3,6-dicarboxamides in excellent yields. The substrate scope can be extended to aryl nitromethyl ketones. A cascade reaction mechanism is proposed and the conjugated aryl moiety is considered to help stabilize the aci-nitroso species, the key intermediates in the cascade reaction. The methodology is practical and efficient because it avoids the purification of the intermediates. The nitroacetanilides were prepared from nitroacetic acid and various anilines employing DCC-DMAP as coupling reagents, and this protocol also possesses advantages like easy handling and high yields.
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Affiliation(s)
- Shanyan Mo
- State Key Laboratory of Chemical Resource Engineering, Department of Organic Chemistry, Faculty of Science, Beijing University of Chemical Technology, Beijing 100029, People's Republic of China.
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19
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Couch ED, Auvil TJ, Mattson AE. Urea-Induced Acid Amplification: A New Approach for Metal-Free Insertion Chemistry. Chemistry 2014; 20:8283-7. [DOI: 10.1002/chem.201403283] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2014] [Indexed: 01/11/2023]
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20
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So SS, Mattson AE. Stereoselective NH Insertion-Arylation Reactions of Nitrodiazoesters. ASIAN J ORG CHEM 2014. [DOI: 10.1002/ajoc.201300285] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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21
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Dunlap NK, Basham J, Wright M, Smith K, Chapa O, Huang J, Shelton W, Yatsky Y. Synthesis of nitrocyclopropyl peptidomimetics. Tetrahedron Lett 2013. [DOI: 10.1016/j.tetlet.2013.09.106] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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22
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23
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Arylation of Diazoesters by a Transient NH Insertion Organocascade. Angew Chem Int Ed Engl 2013; 52:11317-20. [DOI: 10.1002/anie.201304921] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2013] [Revised: 07/12/2013] [Indexed: 12/20/2022]
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24
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25
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Nani RR, Reisman SE. α-Diazo-β-ketonitriles: Uniquely Reactive Substrates for Arene and Alkene Cyclopropanation. J Am Chem Soc 2013; 135:7304-11. [DOI: 10.1021/ja401610p] [Citation(s) in RCA: 72] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Roger R. Nani
- The Warren and Katharine Schlinger
Laboratory for Chemistry
and Chemical Engineering, Division of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena, California
91125, United States
| | - Sarah E. Reisman
- The Warren and Katharine Schlinger
Laboratory for Chemistry
and Chemical Engineering, Division of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena, California
91125, United States
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26
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Kamimura A, Ikeda K, Moriyama T, Uno H. Unexpected reductive double carbon–carbon bonds cleavage of bicyclic nitrocyclopropanes. Tetrahedron Lett 2013. [DOI: 10.1016/j.tetlet.2013.01.094] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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27
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Rentsch A, Landsberg D, Brodmann T, Bülow L, Girbig AK, Kalesse M. Synthese und Pharmakologie von Proteasom-Inhibitoren. Angew Chem Int Ed Engl 2013. [DOI: 10.1002/ange.201207900] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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28
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Rentsch A, Landsberg D, Brodmann T, Bülow L, Girbig AK, Kalesse M. Synthesis and pharmacology of proteasome inhibitors. Angew Chem Int Ed Engl 2013; 52:5450-88. [PMID: 23526565 DOI: 10.1002/anie.201207900] [Citation(s) in RCA: 76] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2012] [Indexed: 12/17/2022]
Abstract
Shortly after the discovery of the proteasome it was proposed that inhibitors could stabilize proteins which ultimately would trigger apoptosis in tumor cells. The essential questions were whether small molecules would be able to inhibit the proteasome without generating prohibitive side effects and how one would derive these compounds. Fortunately, "Mother Nature" has generated a wide variety of natural products that provide distinct selectivities and specificities. The chemical synthesis of these natural products finally provided access to analogues and optimized drugs of which two different classes have been approved for the treatment of malignancies. Despite these achievements, additional lead structures derived from nature are under investigation and will be discussed with regard to their biological potential and chemical challenges.
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Affiliation(s)
- Andreas Rentsch
- Institut für Organische Chemie and Centre of Biomolecular Drug Research, Leibniz Universität Hannover, Schneiderberg 1B, 30167 Hannover, Germany
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Chanthamath S, Nguyen DT, Shibatomi K, Iwasa S. Highly Enantioselective Synthesis of Cyclopropylamine Derivatives via Ru(II)-Pheox-Catalyzed Direct Asymmetric Cyclopropanation of Vinylcarbamates. Org Lett 2013; 15:772-5. [DOI: 10.1021/ol303404c] [Citation(s) in RCA: 71] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Affiliation(s)
- Soda Chanthamath
- Department of Environmental and Life Sciences, Toyohashi University of Technology, 1-1 Hibarigaoka, Tempaku-cho, Toyohashi 441-8580, Japan
| | - Dao Thi Nguyen
- Department of Environmental and Life Sciences, Toyohashi University of Technology, 1-1 Hibarigaoka, Tempaku-cho, Toyohashi 441-8580, Japan
| | - Kazutaka Shibatomi
- Department of Environmental and Life Sciences, Toyohashi University of Technology, 1-1 Hibarigaoka, Tempaku-cho, Toyohashi 441-8580, Japan
| | - Seiji Iwasa
- Department of Environmental and Life Sciences, Toyohashi University of Technology, 1-1 Hibarigaoka, Tempaku-cho, Toyohashi 441-8580, Japan
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Xu H, Zhang X, Ke ZF, Li ZF, Xu XY, Su CY, Phillips DL, Zhao C. Density functional theory study of the mechanism of zinc carbenoid promoted cyclopropanation of allenamides. RSC Adv 2013. [DOI: 10.1039/c3ra42168f] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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Synthesis of nitrocyclopropanedicarboxylic acid derivatives by addition of α-bromonitroalkanes to methylidene malonic, methylidene cyanoacetic or maleic acid derivatives. Russ Chem Bull 2012. [DOI: 10.1007/s11172-011-0348-8] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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So SS, Mattson AE. Urea Activation of α-Nitrodiazoesters: An Organocatalytic Approach to N–H Insertion Reactions. J Am Chem Soc 2012; 134:8798-801. [PMID: 22568726 DOI: 10.1021/ja3031054] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Sonia S. So
- The Ohio State University, Department of Chemistry, 100 West 18th Avenue, Columbus, Ohio 43210,
United States
| | - Anita E. Mattson
- The Ohio State University, Department of Chemistry, 100 West 18th Avenue, Columbus, Ohio 43210,
United States
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Metz AE, Berritt S, Dreher SD, Kozlowski MC. Efficient palladium-catalyzed cross-coupling of highly acidic substrates, nitroacetates. Org Lett 2012; 14:760-3. [PMID: 22263870 DOI: 10.1021/ol203303b] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Palladium-catalyzed cross-coupling conditions were developed that efficiently afford 2-aryl-2-nitroacetates from aryl bromides and the very acidic nitroacetates.
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Affiliation(s)
- Alison E Metz
- Penn Merck High Throughput Experimentation Laboratory, Department of Chemistry, University of Pennsylvania, Philadelphia, Pennsylvania 1910-6323, USA
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Chen DYK, Pouwer RH, Richard JA. Recent advances in the total synthesis of cyclopropane-containing natural products. Chem Soc Rev 2012; 41:4631-42. [DOI: 10.1039/c2cs35067j] [Citation(s) in RCA: 403] [Impact Index Per Article: 33.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Dunlap N, Lankford KR, Pathiranage AL, Taylor J, Reddy N, Gouger D, Singer P, Griffin K, Reibenspies J. Three-Step Synthesis of Cyclopropyl Peptidomimetics. Org Lett 2011; 13:4879-81. [DOI: 10.1021/ol201828u] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Norma Dunlap
- Middle Tennessee State University, Department of Chemistry, Murfreesboro, Tennessee 37132, United States, and Texas A&M University, Department of Chemistry, College Station, Texas 77842, United States
| | - Kevin R. Lankford
- Middle Tennessee State University, Department of Chemistry, Murfreesboro, Tennessee 37132, United States, and Texas A&M University, Department of Chemistry, College Station, Texas 77842, United States
| | - Anuradha Liyana Pathiranage
- Middle Tennessee State University, Department of Chemistry, Murfreesboro, Tennessee 37132, United States, and Texas A&M University, Department of Chemistry, College Station, Texas 77842, United States
| | - Jessica Taylor
- Middle Tennessee State University, Department of Chemistry, Murfreesboro, Tennessee 37132, United States, and Texas A&M University, Department of Chemistry, College Station, Texas 77842, United States
| | - Nikhil Reddy
- Middle Tennessee State University, Department of Chemistry, Murfreesboro, Tennessee 37132, United States, and Texas A&M University, Department of Chemistry, College Station, Texas 77842, United States
| | - Daniel Gouger
- Middle Tennessee State University, Department of Chemistry, Murfreesboro, Tennessee 37132, United States, and Texas A&M University, Department of Chemistry, College Station, Texas 77842, United States
| | - Phillip Singer
- Middle Tennessee State University, Department of Chemistry, Murfreesboro, Tennessee 37132, United States, and Texas A&M University, Department of Chemistry, College Station, Texas 77842, United States
| | - Kent Griffin
- Middle Tennessee State University, Department of Chemistry, Murfreesboro, Tennessee 37132, United States, and Texas A&M University, Department of Chemistry, College Station, Texas 77842, United States
| | - Joseph Reibenspies
- Middle Tennessee State University, Department of Chemistry, Murfreesboro, Tennessee 37132, United States, and Texas A&M University, Department of Chemistry, College Station, Texas 77842, United States
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Qi H, Li X, Xu J. Stereoselective control in the Staudinger reactions involving monosubstituted ketenes with electron acceptor substituents: experimental investigation and theoretical rationalization. Org Biomol Chem 2011; 9:2702-14. [DOI: 10.1039/c0ob00783h] [Citation(s) in RCA: 55] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Valenta P, Carroll PJ, Walsh PJ. Stereoselective synthesis of β-hydroxy enamines, aminocyclopropanes, and 1,3-amino alcohols via asymmetric catalysis. J Am Chem Soc 2010; 132:14179-90. [PMID: 20853837 PMCID: PMC3014220 DOI: 10.1021/ja105435y] [Citation(s) in RCA: 51] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Tandem methods for the catalytic asymmetric preparation of enantioenriched β-hydroxy (E)-enamines and aminocyclopropanes are presented. The diastereoselective hydrogenation of enantioenriched (E)-trisubstituted hydroxy enamines to generate 1,2-disubstituted-1,3-amino alcohols is also outlined. These methods are initiated by highly regioselective hydroboration of N-tosyl-substituted ynamides with diethylborane to generate β-amino alkenyl boranes. In situ boron-to-zinc transmetalation generates β-amino alkenylzinc reagents. These functionalized vinylzinc intermediates are subsequently added to aldehydes in the presence of a catalyst derived from an enantioenriched amino alcohol (morpholino isoborneol, MIB). The catalyst promotes highly enantioselective C-C bond formation to provide β-hydroxy enamines in good isolated yields (68-86%) with 54-98% enantioselectivity. The intermediate zinc β-alkoxy enamines can be subjected to a tandem cyclopropanation to afford aminocyclopropyl carbinols with three continuous stereocenters in a one-pot procedure with good yields (72-82%), enantioselectivities of 76-94%, and >20:1 diastereomeric ratios. Diastereoselective hydrogenation of isolated enantioenriched β-hydroxy enamines over Pd/C furnished syn-1,2-disubstituted-1,3-amino alcohols in high yields (82-90%) with moderate to excellent diastereoselectivities. These methods were used in an efficient preparation of the enantioenriched precursor to PRC200-SS derivatives, which are potent serotonin-norepinephrine-dopamine reuptake inhibitors.
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Affiliation(s)
- Petr Valenta
- P. Roy and Diana T. Vagelos Laboratories, University of Pennsylvania, Department of Chemistry, 231 South 34th Street, Philadelphia, Pennsylvania 19104-6323
| | - Patrick J. Carroll
- P. Roy and Diana T. Vagelos Laboratories, University of Pennsylvania, Department of Chemistry, 231 South 34th Street, Philadelphia, Pennsylvania 19104-6323
| | - Patrick J. Walsh
- P. Roy and Diana T. Vagelos Laboratories, University of Pennsylvania, Department of Chemistry, 231 South 34th Street, Philadelphia, Pennsylvania 19104-6323
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