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Steiner L, Achazi AJ, Kelterer AM, Paulus B, Reissig HU. Diastereoselective Dearomatizing Cyclizations of 5-Arylpentan-2-ones by Samarium Diiodide - A Computational Analysis. Chemistry 2024; 30:e202401120. [PMID: 38512639 DOI: 10.1002/chem.202401120] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2024] [Accepted: 03/21/2024] [Indexed: 03/23/2024]
Abstract
This study analyzes the samarium diiodide-promoted cyclizations of 5-arylpentan-2-ones to dearomatized bicyclic products utilizing density functional theory. The reaction involves a single electron transfer to the carbonyl group, which occurs synchronously with the rate determining cyclization event, and a second subsequent proton-coupled electron transfer. These redox reactions are accurately computed employing small core pseudo potentials explicitly involving all f-electrons of samarium. Comparison of the energies of the possible final products rules out thermodynamic control of the observed regio- and diastereoselectivities. Kinetic control via appropriate transition states is correctly predicted, but to obtain reasonable energy levels the influence of the co-solvent hexamethylphosphortriamide has to be estimated by using a correction term. The steric effect of the bulky samarium ligands is decisive for the observed stereoselectivity. Carbonyl groups in para-position of the aryl group change the regioselectivity of the cyclization and lead to spiro compounds. The computations suggest again kinetic control of this deviating outcome. However, the standard mechanism has to be modified and the involvement of a complex activated by two SmI2 moieties is proposed in which two electrons are transferred simultaneously to form the new C-C bond. Computation of model intermediates show the feasibility of this alternative+ mechanism.
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Affiliation(s)
- Luca Steiner
- Institut für Chemie und Biochemie, Freie Universität Berlin, Arnimallee 22, 14195, Berlin, Germany
- Institut für Physikalische und Theoretischen Chemie, Technische Universität Graz, Stremayrgasse 9, 8010, Graz, Austria
| | - Andreas J Achazi
- Physikalisch-Chemisches Institut, Justus-Liebig-Universität Gießen, Heinrich-Buff-Ring 17, 35392, Gießen, Germany
- Zentrum für Materialforschung, Justus-Liebig-Universität Gießen, Heinrich-Buff-Ring 16, 35392, Gießen, Germany
| | - Anne-Marie Kelterer
- Institut für Physikalische und Theoretischen Chemie, Technische Universität Graz, Stremayrgasse 9, 8010, Graz, Austria
| | - Beate Paulus
- Institut für Chemie und Biochemie, Freie Universität Berlin, Arnimallee 22, 14195, Berlin, Germany
| | - Hans-Ulrich Reissig
- Institut für Chemie und Biochemie, Freie Universität Berlin, Arnimallee 22, 14195, Berlin, Germany
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2
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Crockett MP, Piña J, Gogoi AR, Lalisse RF, Nguyen AV, Gutierrez O, Thomas AA. Breaking the tert-Butyllithium Contact Ion Pair: A Gateway to Alternate Selectivity in Lithiation Reactions. J Am Chem Soc 2023; 145:10743-10755. [PMID: 37133911 PMCID: PMC10245630 DOI: 10.1021/jacs.2c13047] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/04/2023]
Abstract
The effects of Lewis basic phosphoramides on the aggregate structure of t-BuLi have been investigated in detail by NMR and DFT methods. It was determined that hexamethylphosphoramide (HMPA) can shift the equilibrium of t-BuLi to include the triple ion pair (t-Bu-Li-t-Bu)-/HMPA4Li+ which serves as a reservoir for the highly reactive separated ion pair t-Bu-/HMPA4Li+. Because the Li-atom's valences are saturated in this ion pair, the Lewis acidity is significantly decreased; in turn, the basicity is maximized which allowed for the typical directing effects within oxygen heterocycles to be overridden and for remote sp3 C-H bonds to be deprotonated. Furthermore, these newly accessed lithium aggregation states were leveraged to develop a simple γ-lithiation and capture protocol of chromane heterocycles with a variety of alkyl halide electrophiles in good yields.
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Affiliation(s)
- Michael P Crockett
- Department of Chemistry, Texas A&M University, College Station, Texas 77843, United States
| | - Jeanette Piña
- Department of Chemistry, Texas A&M University, College Station, Texas 77843, United States
| | - Achyut Ranjan Gogoi
- Department of Chemistry, Texas A&M University, College Station, Texas 77843, United States
| | - Remy F Lalisse
- Department of Chemistry, Texas A&M University, College Station, Texas 77843, United States
| | - Andrew V Nguyen
- Department of Chemistry, Texas A&M University, College Station, Texas 77843, United States
| | - Osvaldo Gutierrez
- Department of Chemistry, Texas A&M University, College Station, Texas 77843, United States
| | - Andy A Thomas
- Department of Chemistry, Texas A&M University, College Station, Texas 77843, United States
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3
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Rao CN, Reissig HU. Samarium(II)‐Promoted Cyclizations of Non‐activated Indolyl Sulfinyl Imines to Polycyclic Tertiary Carbinamines. European J Org Chem 2022. [DOI: 10.1002/ejoc.202200264] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Chintada Nageswara Rao
- Freie Universität Berlin: Freie Universitat Berlin Institut für Chemie und Biochemie 14195 Berlin GERMANY
| | - Hans-Ulrich Reissig
- Freie Universität Berlin Institut für Chemie und Biochemie Takustr. 3 14195 Berlin GERMANY
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4
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Rao CN, Reissig H. Synthesis and Evaluation of Enantiopure HMPA Analogs in Samarium‐Diiodide‐Promoted Dearomatizations of N‐Acylated Indole Derivatives. European J Org Chem 2021. [DOI: 10.1002/ejoc.202101065] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Chintada Nageswara Rao
- Institut für Chemie und Biochemie Freie Universität Berlin Takustrasse 3 14195 Berlin Germany
| | - Hans‐Ulrich Reissig
- Institut für Chemie und Biochemie Freie Universität Berlin Takustrasse 3 14195 Berlin Germany
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5
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Baars J, Grimm I, Blunk D, Neudörfl J, Schmalz H. Enantioselektive Totalsynthese und Strukturrevision von Dysiherbol A. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202105733] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Julian Baars
- University of Cologne Department of Chemistry Greinstraße 4 50939 Köln Deutschland
| | - Isabelle Grimm
- University of Cologne Department of Chemistry Greinstraße 4 50939 Köln Deutschland
| | - Dirk Blunk
- University of Cologne Department of Chemistry Greinstraße 4 50939 Köln Deutschland
| | - Jörg‐Martin Neudörfl
- University of Cologne Department of Chemistry Greinstraße 4 50939 Köln Deutschland
| | - Hans‐Günther Schmalz
- University of Cologne Department of Chemistry Greinstraße 4 50939 Köln Deutschland
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6
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Baars J, Grimm I, Blunk D, Neudörfl J, Schmalz H. Enantioselective Total Synthesis and Structural Revision of Dysiherbol A. Angew Chem Int Ed Engl 2021; 60:14915-14920. [PMID: 33978302 PMCID: PMC8251742 DOI: 10.1002/anie.202105733] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2021] [Indexed: 12/25/2022]
Abstract
A 12-step total synthesis of the natural product dysiherbol A, a strongly anti-inflammatory and anti-tumor avarane meroterpene isolated from the marine sponge Dysidea sp., was elaborated. As key steps, the synthesis features an enantioselective Cu-catalyzed 1,4-addition/enolate-trapping opening move, an Au-catalyzed double cyclization to build up the tetracyclic core-carbon skeleton, and a late installation of the C5-bridgehead methyl group via proton-induced cyclopropane opening associated with spontaneous cyclic ether formation. The obtained pentacyclic compound (corresponding to an anhydride of the originally suggested structure for dysiherbol A) showed identical spectroscopic data as the natural product, but an opposite molecular rotation. CD-spectroscopic measurements finally confirmed that both the constitution and the absolute configuration of the originally proposed structure of (+)-dysiherbol A need to be revised.
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Affiliation(s)
- Julian Baars
- University of CologneDepartment of ChemistryGreinstrasse 450939CologneGermany
| | - Isabelle Grimm
- University of CologneDepartment of ChemistryGreinstrasse 450939CologneGermany
| | - Dirk Blunk
- University of CologneDepartment of ChemistryGreinstrasse 450939CologneGermany
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7
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Doler C, Friess M, Lackner F, Weber H, Fischer RC, Breinbauer R. Stereoselective synthesis of chiral thiol-containing 1,2-aminoalcohols via SmI2-mediated coupling. Tetrahedron 2020. [DOI: 10.1016/j.tet.2020.131249] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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8
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McDonald CE, Bendorf HD, Mauck JR, McAtee CC, Green AI, Ciccarelli DJ, Bendyk CA, Conrad BJ, Delgado AT. The SmI 2/TEU --Mediated Cyclization of Unsaturated Halides. Org Lett 2020; 22:5685-5689. [PMID: 32603130 DOI: 10.1021/acs.orglett.0c02074] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The combination of SmI2 and the conjugate base of triethylurea (TEU-) has been shown to favor the cyclization of unsaturated halides over direct reduction to a much greater extent than other SmI2-based reductants. Aryl, heteroaryl, and alkyl halides (X = Br, Cl, F) readily undergo heterocyclization and carbocyclization in the presence of SmI2/TEU-.
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Affiliation(s)
- Chriss E McDonald
- Department of Chemistry, Lycoming College, One College Place, Williamsport, Pennsylvania 17701, United States
| | - Holly D Bendorf
- Department of Chemistry, Lycoming College, One College Place, Williamsport, Pennsylvania 17701, United States
| | - Joseph R Mauck
- Department of Chemistry, Lycoming College, One College Place, Williamsport, Pennsylvania 17701, United States
| | - Christopher C McAtee
- Department of Chemistry, Lycoming College, One College Place, Williamsport, Pennsylvania 17701, United States
| | - Ahren I Green
- Department of Chemistry, Lycoming College, One College Place, Williamsport, Pennsylvania 17701, United States
| | - David J Ciccarelli
- Department of Chemistry, Lycoming College, One College Place, Williamsport, Pennsylvania 17701, United States
| | - Cassandra A Bendyk
- Department of Chemistry, Lycoming College, One College Place, Williamsport, Pennsylvania 17701, United States
| | - Brandon J Conrad
- Department of Chemistry, Lycoming College, One College Place, Williamsport, Pennsylvania 17701, United States
| | - Angelique T Delgado
- Department of Chemistry, Lycoming College, One College Place, Williamsport, Pennsylvania 17701, United States
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9
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Ruiz C, Raya-Barón Á, Ortuño MA, Fernández I. Accelerating role of deaggregation agents in lithium-catalysed hydrosilylation of carbonyl compounds. Dalton Trans 2020; 49:7932-7937. [PMID: 32490461 DOI: 10.1039/d0dt01540g] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
A combined computational and experimental approach demonstrates the accelerating role of deaggregation agents, especially HMPA, in the Li-catalysed hydrosilylation of acetophenone in THF solution under very mild conditions.
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Affiliation(s)
- Cristina Ruiz
- Department of Chemistry and Physics, Research centre CIAIMBITAL, Ctra. Sacramento, s/n, 04120 Almería, Spain.
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10
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Malysheva SF, Kuimov VA, Belogorlova NA, Albanov AI, Gusarova NK, Trofimov BA. Superbase-Assisted Selective Synthesis of Triarylphosphines from Aryl Halides and Red Phosphorus: Three Consecutive Different SNAr Reactions in One Pot. European J Org Chem 2019. [DOI: 10.1002/ejoc.201901005] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Svetlana F. Malysheva
- A. E. Favorsky Institute of Chemistry; Siberian Branch of the Russian Academy of Sciences; Favorsky st., 1 664033 Irkutsk Russia
| | - Vladimir A. Kuimov
- A. E. Favorsky Institute of Chemistry; Siberian Branch of the Russian Academy of Sciences; Favorsky st., 1 664033 Irkutsk Russia
| | - Natalia A. Belogorlova
- A. E. Favorsky Institute of Chemistry; Siberian Branch of the Russian Academy of Sciences; Favorsky st., 1 664033 Irkutsk Russia
| | - Alexander I. Albanov
- A. E. Favorsky Institute of Chemistry; Siberian Branch of the Russian Academy of Sciences; Favorsky st., 1 664033 Irkutsk Russia
| | - Nina K. Gusarova
- A. E. Favorsky Institute of Chemistry; Siberian Branch of the Russian Academy of Sciences; Favorsky st., 1 664033 Irkutsk Russia
| | - Boris A. Trofimov
- A. E. Favorsky Institute of Chemistry; Siberian Branch of the Russian Academy of Sciences; Favorsky st., 1 664033 Irkutsk Russia
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11
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Beemelmanns C, Nitsch D, Bentz C, Reissig HU. Stereoselective Cascade Cyclizations with Samarium Diiodide to Tetracyclic Indolines: Precursors of Fluorostrychnines and Brucine. Chemistry 2019; 25:8780-8789. [PMID: 31033048 DOI: 10.1002/chem.201900087] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2019] [Revised: 04/25/2019] [Indexed: 12/16/2022]
Abstract
A series of γ-indolylketones with fluorine, cyano or alkoxy substituents at the benzene moiety was prepared and subjected to samarium diiodide-promoted cyclization reactions. The desired dearomatizing ketyl cascade reaction forming two new rings proceeded in all cases with high diastereoselectivity, but with differing product distribution. In most cases, the desired annulated tetracyclic compounds were obtained in moderate to good yields, but as second product tetracyclic spirolactones were isolated in up to 29 % yield. The reaction rate was influenced by the substituents at the benzene moiety of the substrate as expected, with electron-accepting groups accelerating and electron-donating groups decelerating the cyclization process. In case of a difluoro-substituted γ-indolylketone a partial defluorination was observed. The intermediate samarium enolate of the tetracyclic products could be trapped by adding reactive alkylating agents as electrophiles delivering products with quarternary carbons. In the case of a dimethoxy-substituted tetracyclic cyclization product a subsequent reductive amination stereoselectively provided a pentacyclic compound that was subsequently N-protected and subjected to a regioselective elimination. The obtained functionalized pentacyclic product should be convertible into the alkaloid brucine by four well-established steps. Overall, the presented report shows that functionalized tetracyclic compounds with different substituents are rapidly available with the samarium diiodide cascade cyclization as crucial step. Hence, analogues of the landmark alkaloid strychnine, for example, with specific fluorine substitutions, should be easily accessible.
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Affiliation(s)
- Christine Beemelmanns
- Institut für Chemie und Biochemie, Freie Universität Berlin, Takustraße 3, 14195, Berlin, Germany.,Leibniz-Institut für Naturstoff-Forschung und Infektionsbiologie, Beutenbergstraße 11a, 07745, Jena, Germany
| | - Dominik Nitsch
- Institut für Chemie und Biochemie, Freie Universität Berlin, Takustraße 3, 14195, Berlin, Germany
| | - Christoph Bentz
- Institut für Chemie und Biochemie, Freie Universität Berlin, Takustraße 3, 14195, Berlin, Germany
| | - Hans-Ulrich Reissig
- Institut für Chemie und Biochemie, Freie Universität Berlin, Takustraße 3, 14195, Berlin, Germany
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12
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Stulz R, Meuller J, Baždarević D, Wennberg Huldt C, Strömberg R, Andersson S, Dahlén A. A Versatile and Convenient Synthesis of 34 S-Labeled Phosphorothioate Oligonucleotides. Chembiochem 2018; 19:2114-2119. [PMID: 30062829 PMCID: PMC6585993 DOI: 10.1002/cbic.201800417] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2018] [Indexed: 12/20/2022]
Abstract
A synthetic protocol for 34 S-labeled phosphorothioate oligonucleotides (PS ONs) was developed to facilitate MS-based assay analysis. This was enabled by a highly efficient, two-step, one-pot synthesis of 34 S-labeled phenylacetyl disulfide (34 S-PADS), starting from 34 S-enriched elemental sulfur (34 S8 ). 34 S-PADS was subsequently used for stable isotope labeling (SIL) of oligonucleotides containing a phosphorothioate backbone. The 34 S-SIL PS ONs are shown to retain the same melting temperature, antisense activity, and secondary structure as those of the corresponding unlabeled 32 S PS ONs.
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Affiliation(s)
- Rouven Stulz
- Cardiovascular, Renal and Metabolism IMED Biotech Unit, AstraZeneca, Pepparedsleden 1, 43150, Mölndal, Sweden.,Department of Biosciences and Nutrition, Karolinska Institutet, NEO, Hälsovägen 9, 14157, Huddinge, Sweden
| | - Johan Meuller
- Discovery Sciences IMED Biotech Unit, AstraZeneca, Pepparedsleden 1, 43150, Mölndal, Sweden
| | - Dženita Baždarević
- Cardiovascular, Renal and Metabolism IMED Biotech Unit, AstraZeneca, Pepparedsleden 1, 43150, Mölndal, Sweden
| | - Charlotte Wennberg Huldt
- Cardiovascular, Renal and Metabolism IMED Biotech Unit, AstraZeneca, Pepparedsleden 1, 43150, Mölndal, Sweden
| | - Roger Strömberg
- Department of Biosciences and Nutrition, Karolinska Institutet, NEO, Hälsovägen 9, 14157, Huddinge, Sweden
| | - Shalini Andersson
- Cardiovascular, Renal and Metabolism IMED Biotech Unit, AstraZeneca, Pepparedsleden 1, 43150, Mölndal, Sweden
| | - Anders Dahlén
- Cardiovascular, Renal and Metabolism IMED Biotech Unit, AstraZeneca, Pepparedsleden 1, 43150, Mölndal, Sweden
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13
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Hausherr A, Reissig HU. Addition of Metalated 3-Alkyl-Substituted Alkoxyallenes to Imines: Preparation of Tetrasubstituted 2,5-Dihydropyrroles, Pyrrolidin-3-ones, and Pyrroles. European J Org Chem 2018. [DOI: 10.1002/ejoc.201800598] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Affiliation(s)
- Arndt Hausherr
- Institut für Chemie und Biochemie; Freie Universität Berlin; Takustr. 3 14195 Berlin Germany
| | - Hans-Ulrich Reissig
- Institut für Chemie und Biochemie; Freie Universität Berlin; Takustr. 3 14195 Berlin Germany
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14
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Chiha S, Soicke A, Barone M, Müller M, Bruns J, Opitz R, Neudörfl JM, Kühne R, Schmalz HG. Design and Synthesis of Building Blocks for PPII-Helix Secondary-Structure Mimetics: A Stereoselective Entry to 4-Substituted 5-Vinylprolines. European J Org Chem 2017. [DOI: 10.1002/ejoc.201701584] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Slim Chiha
- Department of Chemistry; University of Cologne; Greinstrasse 4 50939 Cologne Germany
| | - Arne Soicke
- Department of Chemistry; University of Cologne; Greinstrasse 4 50939 Cologne Germany
| | - Matthias Barone
- Campus BerlinBuch; Leibniz-Institut für Molekulare Pharmakologie (FMP); 13125 Berlin Germany
| | - Matthias Müller
- Campus BerlinBuch; Leibniz-Institut für Molekulare Pharmakologie (FMP); 13125 Berlin Germany
| | - Judith Bruns
- Department of Chemistry; University of Cologne; Greinstrasse 4 50939 Cologne Germany
| | - Robert Opitz
- Campus BerlinBuch; Leibniz-Institut für Molekulare Pharmakologie (FMP); 13125 Berlin Germany
| | - Jörg-Martin Neudörfl
- Department of Chemistry; University of Cologne; Greinstrasse 4 50939 Cologne Germany
| | - Ronald Kühne
- Campus BerlinBuch; Leibniz-Institut für Molekulare Pharmakologie (FMP); 13125 Berlin Germany
| | - Hans-Günther Schmalz
- Department of Chemistry; University of Cologne; Greinstrasse 4 50939 Cologne Germany
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15
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Mao H, You BX, Zhou LJ, Xie TT, Wen YH, Lv X, Wang XX. SmI2-mediated reductive cyclization of β-arylthio ketones: a facile and diastereoselective synthesis of thiochroman derivatives. Org Biomol Chem 2017; 15:6157-6166. [DOI: 10.1039/c7ob01082f] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
SmI2-mediated reductive cyclization of β-arylthio ketones afforded a general approach to dihydrothiochroman-ols in good yields and high degrees of diastereoselectivity.
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Affiliation(s)
- Hui Mao
- Department of Chemistry
- College of Chemistry and Life Sciences
- Zhejiang Normal University
- Jinhua 321004
- People's Republic of China
| | - Bing-Xin You
- Department of Chemistry
- College of Chemistry and Life Sciences
- Zhejiang Normal University
- Jinhua 321004
- People's Republic of China
| | - Lie-Jin Zhou
- Department of Chemistry
- College of Chemistry and Life Sciences
- Zhejiang Normal University
- Jinhua 321004
- People's Republic of China
| | - Ting-Ting Xie
- Department of Chemistry
- College of Chemistry and Life Sciences
- Zhejiang Normal University
- Jinhua 321004
- People's Republic of China
| | - Yi-Hang Wen
- Department of Chemistry
- College of Chemistry and Life Sciences
- Zhejiang Normal University
- Jinhua 321004
- People's Republic of China
| | - Xin Lv
- Department of Chemistry
- College of Chemistry and Life Sciences
- Zhejiang Normal University
- Jinhua 321004
- People's Republic of China
| | - Xiao-Xia Wang
- Department of Chemistry
- College of Chemistry and Life Sciences
- Zhejiang Normal University
- Jinhua 321004
- People's Republic of China
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16
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Pham TN, Bordage S, Pudlo M, Demougeot C, Thai KM, Girard-Thernier C. Cinnamide Derivatives as Mammalian Arginase Inhibitors: Synthesis, Biological Evaluation and Molecular Docking. Int J Mol Sci 2016; 17:E1656. [PMID: 27690022 PMCID: PMC5085689 DOI: 10.3390/ijms17101656] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2016] [Revised: 09/22/2016] [Accepted: 09/23/2016] [Indexed: 12/24/2022] Open
Abstract
Arginases are enzymes that are involved in many human diseases and have been targeted for new treatments. Here a series of cinnamides was designed, synthesized and evaluated in vitro and in silico for their inhibitory activity against mammalian arginase. Using a microassay on purified liver bovine arginase (b-ARG I), (E)-N-(2-phenylethyl)-3,4-dihydroxycinnamide, also named caffeic acid phenylamide (CAPA), was shown to be slightly more active than our natural reference inhibitor, chlorogenic acid (IC50 = 6.9 ± 1.3 and 10.6 ± 1.6 µM, respectively) but it remained less active that the synthetic reference inhibitor Nω-hydroxy-nor-l-arginine nor-NOHA (IC50 = 1.7 ± 0.2 µM). Enzyme kinetic studies showed that CAPA was a competitive inhibitor of arginase with Ki = 5.5 ± 1 µM. Whereas the activity of nor-NOHA was retained (IC50 = 5.7 ± 0.6 µM) using a human recombinant arginase I (h-ARG I), CAPA showed poorer activity (IC50 = 60.3 ± 7.8 µM). However, our study revealed that the cinnamoyl moiety and catechol function were important for inhibitory activity. Docking results on h-ARG I demonstrated that the caffeoyl moiety could penetrate into the active-site pocket of the enzyme, and the catechol function might interact with the cofactor Mn2+ and several crucial amino acid residues involved in the hydrolysis mechanism of arginase. The results of this study suggest that 3,4-dihydroxycinnamides are worth being considered as potential mammalian arginase inhibitors, and could be useful for further research on the development of new arginase inhibitors.
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Affiliation(s)
- Thanh-Nhat Pham
- PEPITE EA4267, University Bourgogne Franche-Comté, F-25000 Besançon, France.
| | - Simon Bordage
- PEPITE EA4267, University Bourgogne Franche-Comté, F-25000 Besançon, France.
- University Lille, EA 7394-ICV-Institut Charles Viollette, F-59000 Lille, France.
| | - Marc Pudlo
- PEPITE EA4267, University Bourgogne Franche-Comté, F-25000 Besançon, France.
| | - Céline Demougeot
- PEPITE EA4267, University Bourgogne Franche-Comté, F-25000 Besançon, France.
| | - Khac-Minh Thai
- Department of Medicinal Chemistry, Faculty of Pharmacy, University of Medicine and Pharmacy at Ho Chi Minh City, 41 Dinh Tien Hoang, Dist 1, Ho Chi Minh City 700000, Vietnam.
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17
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McDonald CE, Ramsey JD, McAtee CC, Mauck JR, Hale EM, Cumens JA. The Use of Ureates as Activators for Samarium Diiodide. J Org Chem 2016; 81:5903-14. [DOI: 10.1021/acs.joc.6b00733] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Chriss E. McDonald
- Department
of Chemistry, Lycoming College, 700 College Place, Williamsport, Pennsylvania 17701, United States
| | - Jeremy D. Ramsey
- Department
of Chemistry, Lycoming College, 700 College Place, Williamsport, Pennsylvania 17701, United States
| | - Christopher C. McAtee
- Department
of Chemistry, Lycoming College, 700 College Place, Williamsport, Pennsylvania 17701, United States
| | - Joseph R. Mauck
- Department
of Chemistry, Lycoming College, 700 College Place, Williamsport, Pennsylvania 17701, United States
| | - Erin M. Hale
- Department
of Chemistry, Lycoming College, 700 College Place, Williamsport, Pennsylvania 17701, United States
| | - Justin A. Cumens
- Department
of Chemistry, Lycoming College, 700 College Place, Williamsport, Pennsylvania 17701, United States
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Wilsdorf M, Lentz D, Reissig HU. Model Studies towards Functionalized Bisbenzannulated [5,6]-Spiroketals. European J Org Chem 2016. [DOI: 10.1002/ejoc.201501586] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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19
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Rao CN, Bentz C, Reissig H. Lithium Bromide/Water as Additives in Dearomatizing Samarium‐Ketyl (Hetero)Arene Cyclizations. Chemistry 2015; 21:15951-4. [DOI: 10.1002/chem.201502912] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2015] [Indexed: 12/11/2022]
Affiliation(s)
- Chintada Nageswara Rao
- Institut für Chemie und Biochemie, Freie Universität Berlin, Takustrasse 3, 14195 Berlin (Germany)
| | - Christoph Bentz
- Institut für Chemie und Biochemie, Freie Universität Berlin, Takustrasse 3, 14195 Berlin (Germany)
| | - Hans‐Ulrich Reissig
- Institut für Chemie und Biochemie, Freie Universität Berlin, Takustrasse 3, 14195 Berlin (Germany)
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20
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Abstract
Strychnine stands out from the group of classical natural products as one of the first complex compounds to be isolated in pure form and an extreme challenge to be structurally characterized. It has played a central role in natural product total syntheses and the surge in the development of innovative synthetic methods for many decades. Recently, we have accomplished one of the shortest formal total syntheses of strychnine (in ten steps and 14% overall yield or even shorter in eight steps and 10% overall yield). The evolution of a productive synthetic strategy, as well as the synthetic challenges tackled, are described here in detail, including examples of related transformations. The successful synthetic strategy was inspired by the premise that the core structure could be derived from simple aromatic indole precursors by a reductive SmI2 -induced ketyl-aryl coupling. Other key reactions included a diastereoselective reduction and a regioselective elimination protocol. Altogether one of the shortest syntheses of iso-strychnine and hence of strychnine was established.
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Affiliation(s)
- Christine Beemelmanns
- Leibniz Institute for Natural Product Research and Infection Biology e.V., Hans-Knöll-Institute (HKI), Beutenbergstrasse 11a, 07745, Jena, Germany.
| | - Hans-Ulrich Reissig
- Institut für Chemie und Biochemie, Freie Universität Berlin, Takustrasse 3, 14195, Berlin, Germany.
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22
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Beemelmanns C, Reissig HU. Evolution of a Short Route to Strychnine by Using the Samarium-Diiodide-Induced Cascade Cyclization as a Key Step. Chemistry 2015; 21:8416-25. [DOI: 10.1002/chem.201500094] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2015] [Indexed: 01/15/2023]
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23
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Rao CN, Lentz D, Reißig HU. Synthese polycyclischer tertiärer Carbinamine durch Samariumdiiodid-vermittelte Cyclisierungen von Indolylsulfinyliminen. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201408324] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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24
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Rao CN, Lentz D, Reissig HU. Synthesis of Polycyclic Tertiary Carbinamines by Samarium Diiodide Mediated Cyclizations of Indolyl Sulfinyl Imines. Angew Chem Int Ed Engl 2015; 54:2750-3. [DOI: 10.1002/anie.201408324] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2014] [Revised: 11/06/2014] [Indexed: 12/14/2022]
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25
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Szostak M, Spain M, Procter DJ. Ketyl-Type Radicals from Cyclic and Acyclic Esters are Stabilized by SmI2(H2O)n: The Role of SmI2(H2O)n in Post-Electron Transfer Steps. J Am Chem Soc 2014; 136:8459-66. [DOI: 10.1021/ja503494b] [Citation(s) in RCA: 61] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Affiliation(s)
- Michal Szostak
- School of Chemistry, University of Manchester, Oxford
Road, Manchester, M13 9PL United Kingdom
| | - Malcolm Spain
- School of Chemistry, University of Manchester, Oxford
Road, Manchester, M13 9PL United Kingdom
| | - David J. Procter
- School of Chemistry, University of Manchester, Oxford
Road, Manchester, M13 9PL United Kingdom
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26
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Szostak M, Fazakerley NJ, Parmar D, Procter DJ. Cross-Coupling Reactions Using Samarium(II) Iodide. Chem Rev 2014; 114:5959-6039. [DOI: 10.1021/cr400685r] [Citation(s) in RCA: 290] [Impact Index Per Article: 29.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Michal Szostak
- School
of Chemistry, University of Manchester, Oxford Road, Manchester, M13 9PL, United Kingdom
| | - Neal J. Fazakerley
- School
of Chemistry, University of Manchester, Oxford Road, Manchester, M13 9PL, United Kingdom
| | - Dixit Parmar
- School
of Chemistry, University of Manchester, Oxford Road, Manchester, M13 9PL, United Kingdom
| | - David J. Procter
- School
of Chemistry, University of Manchester, Oxford Road, Manchester, M13 9PL, United Kingdom
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27
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Szostak M, Spain M, Procter DJ. On the role of pre- and post-electron-transfer steps in the SmI2 /amine/H(2)O-mediated reduction of esters: new mechanistic insights and kinetic studies. Chemistry 2014; 20:4222-6. [PMID: 24615806 PMCID: PMC4497321 DOI: 10.1002/chem.201400295] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2014] [Indexed: 02/02/2023]
Abstract
The mechanism of the SmI2 -mediated reduction of unactivated esters has been studied using a combination of kinetic, radical clocks and reactivity experiments. The kinetic data indicate that all reaction components (SmI2 , amine, H2 O) are involved in the rate equation and that electron transfer is facilitated by Brønsted base assisted deprotonation of water in the transition state. The use of validated cyclopropyl-containing radical clocks demonstrates that the reaction occurs via fast, reversible first electron transfer, and that the electron transfer from simple Sm(II) complexes to aliphatic esters is rapid. Notably, the mechanistic details presented herein indicate that complexation between SmI2 , H2 O and amines affords a new class of structurally diverse, thermodynamically powerful reductants for efficient electron transfer to carboxylic acid derivatives as an attractive alternative to the classical hydride-mediated reductions and as a source of acyl-radical equivalents for CC bond forming processes.
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Affiliation(s)
- Michal Szostak
- School of Chemistry, University of ManchesterOxford Road, Manchester M13 9PL (UK), Fax: (+44) 161-275-4939
| | - Malcolm Spain
- School of Chemistry, University of ManchesterOxford Road, Manchester M13 9PL (UK), Fax: (+44) 161-275-4939
| | - David J Procter
- School of Chemistry, University of ManchesterOxford Road, Manchester M13 9PL (UK), Fax: (+44) 161-275-4939
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28
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Szostak M, Spain M, Procter DJ. Determination of the Effective Redox Potentials of SmI2, SmBr2, SmCl2, and their Complexes with Water by Reduction of Aromatic Hydrocarbons. Reduction of Anthracene and Stilbene by Samarium(II) Iodide–Water Complex. J Org Chem 2014; 79:2522-37. [DOI: 10.1021/jo4028243] [Citation(s) in RCA: 69] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Affiliation(s)
- Michal Szostak
- School of Chemistry, University of Manchester, Oxford
Road, Manchester M13 9PL, United Kingdom
| | - Malcolm Spain
- School of Chemistry, University of Manchester, Oxford
Road, Manchester M13 9PL, United Kingdom
| | - David J. Procter
- School of Chemistry, University of Manchester, Oxford
Road, Manchester M13 9PL, United Kingdom
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29
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Halder S, Hoz S. Hydroxylated HMPA Enhances both Reduction Potential and Proton Donation in SmI2 Reactions. J Org Chem 2014; 79:2682-7. [DOI: 10.1021/jo500161s] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Sandipan Halder
- Department of Chemistry, Bar-Ilan University, Ramat-Gan 52900, Israel
| | - Shmaryahu Hoz
- Department of Chemistry, Bar-Ilan University, Ramat-Gan 52900, Israel
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30
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Beemelmanns C, Gross S, Reissig HU. Towards the Core Structure ofStrychnosAlkaloids Using Samarium Diiodide-Induced Reactions of Indole Derivatives. Chemistry 2013; 19:17801-8. [DOI: 10.1002/chem.201302795] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2013] [Indexed: 01/03/2023]
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31
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McDonald CE, Ramsey JR, Sampsell DG, Anderson LA, Krebs JE, Smith SN. Dipyrrolidinomethylaminophosphoric acid triamide (DPMPA) as an activator for the samarium diiodide-mediated reduction of alkyl and aryl halides. Tetrahedron 2013. [DOI: 10.1016/j.tet.2013.02.025] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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32
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Jasiński M, Watanabe T, Reissig HU. Samarium Diiodide Promoted Reduction of 3,6-Dihydro-2H-1,2-oxazines: Competition of 1,4-Amino Alcohol Formation and Ring Contraction to Pyrrole Derivatives. European J Org Chem 2012. [DOI: 10.1002/ejoc.201201210] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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33
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Henschke JP, Liu Y, Huang X, Chen Y, Meng D, Xia L, Wei X, Xie A, Li D, Huang Q, Sun T, Wang J, Gu X, Huang X, Wang L, Xiao J, Qiu S. The Manufacture of a Homochiral 4-Silyloxycyclopentenone Intermediate for the Synthesis of Prostaglandin Analogues. Org Process Res Dev 2012. [DOI: 10.1021/op300188x] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Julian P. Henschke
- ScinoPharm Taiwan, Ltd., 1 Nan-Ke Eighth Road, Tainan Science Industrial
Park, Shan-Hua, Tainan, Taiwan 74144
| | - Yuanlian Liu
- ScinoPharm (Changshu) Pharmaceutical, Ltd., 16 Dong Zhou Road, Economic Development
Zone, Changshu, Jiangsu Province, China 215513
| | - Xiaohong Huang
- ScinoPharm (Changshu) Pharmaceutical, Ltd., 16 Dong Zhou Road, Economic Development
Zone, Changshu, Jiangsu Province, China 215513
| | - Yungfa Chen
- ScinoPharm Taiwan, Ltd., 1 Nan-Ke Eighth Road, Tainan Science Industrial
Park, Shan-Hua, Tainan, Taiwan 74144
| | - Dechao Meng
- ScinoPharm (Changshu) Pharmaceutical, Ltd., 16 Dong Zhou Road, Economic Development
Zone, Changshu, Jiangsu Province, China 215513
| | - Lizhen Xia
- ScinoPharm (Changshu) Pharmaceutical, Ltd., 16 Dong Zhou Road, Economic Development
Zone, Changshu, Jiangsu Province, China 215513
| | - Xiuqiong Wei
- ScinoPharm (Changshu) Pharmaceutical, Ltd., 16 Dong Zhou Road, Economic Development
Zone, Changshu, Jiangsu Province, China 215513
| | - Aiping Xie
- ScinoPharm (Changshu) Pharmaceutical, Ltd., 16 Dong Zhou Road, Economic Development
Zone, Changshu, Jiangsu Province, China 215513
| | - Danhong Li
- ScinoPharm (Changshu) Pharmaceutical, Ltd., 16 Dong Zhou Road, Economic Development
Zone, Changshu, Jiangsu Province, China 215513
| | - Qiang Huang
- ScinoPharm (Changshu) Pharmaceutical, Ltd., 16 Dong Zhou Road, Economic Development
Zone, Changshu, Jiangsu Province, China 215513
| | - Ting Sun
- ScinoPharm (Changshu) Pharmaceutical, Ltd., 16 Dong Zhou Road, Economic Development
Zone, Changshu, Jiangsu Province, China 215513
| | - Juan Wang
- ScinoPharm (Changshu) Pharmaceutical, Ltd., 16 Dong Zhou Road, Economic Development
Zone, Changshu, Jiangsu Province, China 215513
| | - Xuebin Gu
- ScinoPharm (Changshu) Pharmaceutical, Ltd., 16 Dong Zhou Road, Economic Development
Zone, Changshu, Jiangsu Province, China 215513
| | - Xinyan Huang
- ScinoPharm (Changshu) Pharmaceutical, Ltd., 16 Dong Zhou Road, Economic Development
Zone, Changshu, Jiangsu Province, China 215513
| | - Longhu Wang
- ScinoPharm Taiwan, Ltd., 1 Nan-Ke Eighth Road, Tainan Science Industrial
Park, Shan-Hua, Tainan, Taiwan 74144
| | - Jun Xiao
- ScinoPharm (Changshu) Pharmaceutical, Ltd., 16 Dong Zhou Road, Economic Development
Zone, Changshu, Jiangsu Province, China 215513
| | - Shenhai Qiu
- ScinoPharm (Changshu) Pharmaceutical, Ltd., 16 Dong Zhou Road, Economic Development
Zone, Changshu, Jiangsu Province, China 215513
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Saiai A, Bielig H, Velder J, Neudörfl JM, Menning M, Kufer TA, Schmalz HG. Hydrophenalene–Cr(CO)3 complexes as anti-inflammatory agents based on specific inhibition of NOD2 signalling: a SAR study. MEDCHEMCOMM 2012. [DOI: 10.1039/c2md20221b] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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