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Gölz JP, Bockelmann S, Mayer K, Steinhoff HJ, Wieczorek H, Huss M, Klare JP, Menche D. EPR Studies of V-ATPase with Spin-Labeled Inhibitors DCC and Archazolid: Interaction Dynamics with Proton Translocating Subunit c. ChemMedChem 2015; 11:420-8. [DOI: 10.1002/cmdc.201500500] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2015] [Indexed: 01/16/2023]
Affiliation(s)
- Jan Philipp Gölz
- Kekulé-Institut für Organische Chemie und Biochemie; Rheinische Friedrich-Wilhelms-Universität Bonn; Gerhard-Domagk-Str. 1 53121 Bonn Germany
| | - Svenja Bockelmann
- Fachbereich Biologie/Chemie; Universität Osnabrück; 49069 Osnabrück Germany
| | - Kerstin Mayer
- Institut für Organische Chemie; Ruprecht-Karls-Universität Heidelberg; INF 270; 69120 Heidelberg Germany
| | | | - Helmut Wieczorek
- Fachbereich Biologie/Chemie; Universität Osnabrück; 49069 Osnabrück Germany
| | - Markus Huss
- Fachbereich Biologie/Chemie; Universität Osnabrück; 49069 Osnabrück Germany
| | - Johann P. Klare
- Fachbereich Physik; Universität Osnabrück; 49069 Osnabrück Germany
| | - Dirk Menche
- Kekulé-Institut für Organische Chemie und Biochemie; Rheinische Friedrich-Wilhelms-Universität Bonn; Gerhard-Domagk-Str. 1 53121 Bonn Germany
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Nath N, d'Auvergne EJ, Griesinger C. Long-Range Residual Dipolar Couplings: A Tool for Determining the Configuration of Small Molecules. Angew Chem Int Ed Engl 2015; 54:12706-10. [PMID: 26359945 DOI: 10.1002/anie.201504432] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2015] [Revised: 07/14/2015] [Indexed: 11/07/2022]
Abstract
Together with NOE and J coupling, one-bond residual dipolar coupling (RDC), which reports on the three-dimensional orientation of an internuclear vector in the molecular frame, plays an important role in the conformation and configuration analysis of small molecules in solution by NMR spectroscopy. When the molecule has few C-H bonds, or too many bonds are in parallel, the available RDCs may not be sufficient to obtain the alignment tensor used for structure elucidation. Long-range RDCs that connect nuclei over multiple bonds are normally not parallel to the single bonds and therefore complement one-bond RDCs. Herein we present a method for extracting the long-range RDC of a chosen proton or group of protons to all remotely connected carbon atoms, including non-protonated carbon atoms. Alignment tensors fitted directly to the total long-range couplings (T=J+D) enabled straightforward analysis of both the long-range and one-bond RDCs for strychnine.
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Affiliation(s)
- Nilamoni Nath
- Department of NMR-based Structural Biology, Max Planck Institute for Biophysical Chemistry, 37077 Göttingen (Germany)
| | - Edward J d'Auvergne
- Department of NMR-based Structural Biology, Max Planck Institute for Biophysical Chemistry, 37077 Göttingen (Germany)
| | - Christian Griesinger
- Department of NMR-based Structural Biology, Max Planck Institute for Biophysical Chemistry, 37077 Göttingen (Germany).
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Nath N, d'Auvergne EJ, Griesinger C. Long-Range Residual Dipolar Couplings: A Tool for Determining the Configuration of Small Molecules. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201504432] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Abstract
Polyketides are a very diverse family of natural products with an extremely broad range of biological activities and pharmacological properties, including antiproliferative, antibiotic, antifungal, or antiplasmodial activities, and in many cases specific targets are addressed at the molecular level. Their structures are characterized by diverse assemblies of methyl- and hydroxyl-bearing stereogenic centers enabling large numbers of stereochemical permutations, which are often embedded into macrolide rings. This complexity renders the stereochemical assignment and directed total synthesis challenging tasks. Within this review, we will detail practicable approaches for the stereochemical determination of diverse complex polyketides of myxobacterial origin by using computational and NMR methods in combination with novel procedures based on bioinformatics. Furthermore, we have developed efficient preparative strategies for the synthesis of these compounds, which have culminated in several first total syntheses. Key aspects of these various endeavors, which will also focus on the importance of conformational bias in complex polyketide analysis and synthesis, will be discussed within this review in the realm of the potent macrolide antibiotics etnangien and rhizopodin. Along these lines, we will also summarize novel methods for the rapid assembly of key structural elements of polyketides including a novel domino concept relying on a combination of a nucleophilic addition and a Tsuji–Trost reaction.
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Affiliation(s)
- Sebastian Essig
- 1Institut für Organische Chemie, Universität Heidelberg, INF 270, D-69120 Heidelberg, Germany
| | - Dirk Menche
- 2Kekulé-Institut für Organische Chemie und Biochemie der Universität Bonn, Gerhard-Domagk-Str. 1, D-53121 Bonn, Germany
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Pérez-Balado C, Sun H, Griesinger C, de Lera ÁR, Navarro-Vázquez A. Residual Dipolar Coupling Enhanced NMR Spectroscopy and Chiroptics: A Powerful Combination for the Complete Elucidation of Symmetrical Small Molecules. Chemistry 2011; 17:11983-6. [DOI: 10.1002/chem.201101385] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2011] [Indexed: 11/08/2022]
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Gil RR. Konstitutions-, Konfigurations- und Konformationsanalyse niedermolekularer organischer Verbindungen auf der Grundlage von dipolaren Restkopplungen. Angew Chem Int Ed Engl 2011. [DOI: 10.1002/ange.201101561] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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7
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Gil RR. Constitutional, Configurational, and Conformational Analysis of Small Organic Molecules on the Basis of NMR Residual Dipolar Couplings. Angew Chem Int Ed Engl 2011; 50:7222-4. [DOI: 10.1002/anie.201101561] [Citation(s) in RCA: 87] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2011] [Indexed: 11/06/2022]
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Kummerlöwe G, Crone B, Kretschmer M, Kirsch SF, Luy B. Dipolare Restkopplungen als effektives Instrument der Konstitutionsanalyse: die unerwartete Bildung tricyclischer Verbindungen. Angew Chem Int Ed Engl 2011. [DOI: 10.1002/ange.201007305] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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9
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Residual Dipolar Couplings as a Powerful Tool for Constitutional Analysis: The Unexpected Formation of Tricyclic Compounds. Angew Chem Int Ed Engl 2011; 50:2643-5. [DOI: 10.1002/anie.201007305] [Citation(s) in RCA: 72] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2010] [Indexed: 11/07/2022]
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Arnold L, Marx A, Thiele C, Reggelin M. Polyguanidines as Chiral Orienting Media for Organic Compounds. Chemistry 2010; 16:10342-6. [DOI: 10.1002/chem.201000940] [Citation(s) in RCA: 59] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Marx A, Böttcher B, Thiele C. Enhancing the Orienting Properties of Poly(γ-benzyl-L-glutamate) by means of Additives. Chemistry 2010; 16:1656-63. [DOI: 10.1002/chem.200902287] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Böttcher B, Schmidts V, Raskatov J, Thiele C. Bestimmung der Konformation des Schlüsselintermediats einer enantioselektiven Palladium-katalysierten allylischen Substitution mithilfe dipolarer Restkopplungen. Angew Chem Int Ed Engl 2009. [DOI: 10.1002/ange.200903649] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
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13
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Böttcher B, Schmidts V, Raskatov J, Thiele C. Determination of the Conformation of the Key Intermediate in an Enantioselective Palladium-Catalyzed Allylic Substitution from Residual Dipolar Couplings. Angew Chem Int Ed Engl 2009; 49:205-9. [DOI: 10.1002/anie.200903649] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
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Thiele C, Schmidts V, Böttcher B, Louzao I, Berger R, Maliniak A, Stevensson B. On the Treatment of Conformational Flexibility when Using Residual Dipolar Couplings for Structure Determination. Angew Chem Int Ed Engl 2009; 48:6708-12. [DOI: 10.1002/anie.200902398] [Citation(s) in RCA: 64] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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15
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Thiele C, Schmidts V, Böttcher B, Louzao I, Berger R, Maliniak A, Stevensson B. On the Treatment of Conformational Flexibility when Using Residual Dipolar Couplings for Structure Determination. Angew Chem Int Ed Engl 2009. [DOI: 10.1002/ange.200902398] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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García M, Pagola S, Navarro-Vázquez A, Phillips D, Gayathri C, Krakauer H, Stephens P, Nicotra V, Gil R. Stereochemistry Determination by Powder X-Ray Diffraction Analysis and NMR Spectroscopy Residual Dipolar Couplings. Angew Chem Int Ed Engl 2009; 48:5670-4. [DOI: 10.1002/anie.200900760] [Citation(s) in RCA: 50] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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García M, Pagola S, Navarro-Vázquez A, Phillips D, Gayathri C, Krakauer H, Stephens P, Nicotra V, Gil R. Stereochemistry Determination by Powder X-Ray Diffraction Analysis and NMR Spectroscopy Residual Dipolar Couplings. Angew Chem Int Ed Engl 2009. [DOI: 10.1002/ange.200900760] [Citation(s) in RCA: 15] [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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Schmid MB, Fleischmann M, D'Elia V, Reiser O, Gronwald W, Gschwind RM. Residual Dipolar Couplings in Short Peptidic Foldamers: Combined Analyses of Backbone and Side-Chain Conformations and Evaluation of Structure Coordinates of Rigid Unnatural Amino Acids. Chembiochem 2009; 10:440-4. [DOI: 10.1002/cbic.200800736] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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