1
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Relative configuration of micrograms of natural compounds using proton residual chemical shift anisotropy. Nat Commun 2020; 11:4372. [PMID: 32873801 PMCID: PMC7463026 DOI: 10.1038/s41467-020-18093-5] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2019] [Accepted: 07/28/2020] [Indexed: 01/12/2023] Open
Abstract
3D molecular structure determination is a challenge for organic compounds or natural products available in minute amounts. Proton/proton and proton/carbon correlations yield the constitution. J couplings and NOEs oftentimes supported by one-bond 1H,13C residual dipolar couplings (RDCs) or by 13C residual chemical shift anisotropies (RCSAs) provide the relative configuration. However, these RDCs or carbon RCSAs rely on 1% natural abundance of 13C preventing their use for compounds available only in quantities of a few 10’s of µgs. By contrast, 1H RCSAs provide similar information on spatial orientation of structural moieties within a molecule, while using the abundant 1H spin. Herein, 1H RCSAs are accurately measured using constrained aligning gels or liquid crystals and applied to the 3D structural determination of molecules with varying complexities. Even more, deuterated alignment media allow the elucidation of the relative configuration of around 35 µg of a briarane compound isolated from Briareum asbestinum. Determination of 3D molecular structures remains challenging for natural products or organic compounds available in minute amounts. Here, the authors determine the structure of complex molecules, including few micrograms of briarane B-3 isolated from Briareum asbestinums, through measurement of 1H residual chemical shift anisotropy.
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2
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Natongchai W, Pornpraprom S, D' Elia V. Synthesis of Bio‐Based Cyclic Carbonates Using a Bio‐Based Hydrogen Bond Donor: Application of Ascorbic Acid to the Cycloaddition of CO
2
to Oleochemicals. ASIAN J ORG CHEM 2020. [DOI: 10.1002/ajoc.202000154] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Wuttichai Natongchai
- Department of Materials Science and Engineering School of Molecular Science and EngineeringVidyasirimedhi Institute of Science and Technology (VISTEC) 555 Moo 1, 21210 Payupnai, WangChan, Rayong Thailand
| | - Suriyaporn Pornpraprom
- Department of Materials Science and Engineering School of Molecular Science and EngineeringVidyasirimedhi Institute of Science and Technology (VISTEC) 555 Moo 1, 21210 Payupnai, WangChan, Rayong Thailand
| | - Valerio D' Elia
- Department of Materials Science and Engineering School of Molecular Science and EngineeringVidyasirimedhi Institute of Science and Technology (VISTEC) 555 Moo 1, 21210 Payupnai, WangChan, Rayong Thailand
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3
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Yingcharoen P, Natongchai W, Poater A, D' Elia V. Intertwined chemistry of hydroxyl hydrogen-bond donors, epoxides and isocyanates in the organocatalytic synthesis of oxazolidinones versus isocyanurates: rational catalytic investigation and mechanistic understanding. Catal Sci Technol 2020. [DOI: 10.1039/d0cy00987c] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
The efficiency and chemoselectivity of the cycloaddition of isocyanates to epoxides to afford oxazolidinones were investigated using hydroxyl hydrogen-bond donors as organocatalysts.
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Affiliation(s)
- Prapussorn Yingcharoen
- Department of Materials Science and Engineering
- School of Molecular Science and Engineering
- Vidyasirimedhi Institute of Science and Technology (VISTEC)
- Rayong
- Thailand
| | - Wuttichai Natongchai
- Department of Materials Science and Engineering
- School of Molecular Science and Engineering
- Vidyasirimedhi Institute of Science and Technology (VISTEC)
- Rayong
- Thailand
| | - Albert Poater
- Institut de Química Computacional i Catàlisi and Departament de Química
- Universitat de Girona
- 17003 Girona
- Spain
| | - Valerio D' Elia
- Department of Materials Science and Engineering
- School of Molecular Science and Engineering
- Vidyasirimedhi Institute of Science and Technology (VISTEC)
- Rayong
- Thailand
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4
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Fu J, Wurzer N, Lehner V, Reiser O, Davies HML. Rh(II)-Catalyzed Monocyclopropanation of Pyrroles and Its Application to the Synthesis Pharmaceutically Relevant Compounds. Org Lett 2019; 21:6102-6106. [DOI: 10.1021/acs.orglett.9b02250] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Jiantao Fu
- Department of Chemistry, Emory University, 1515 Dickey Drive, Atlanta, Georgia 30322, United States
| | - Nikolai Wurzer
- Department of Chemistry, Emory University, 1515 Dickey Drive, Atlanta, Georgia 30322, United States
- Institute of Organic Chemistry, University of Regensburg, Universitätsstraße 31, 93053 Regensburg, Germany
| | - Verena Lehner
- Department of Chemistry, Emory University, 1515 Dickey Drive, Atlanta, Georgia 30322, United States
- Institute of Organic Chemistry, University of Regensburg, Universitätsstraße 31, 93053 Regensburg, Germany
| | - Oliver Reiser
- Institute of Organic Chemistry, University of Regensburg, Universitätsstraße 31, 93053 Regensburg, Germany
| | - Huw M. L. Davies
- Department of Chemistry, Emory University, 1515 Dickey Drive, Atlanta, Georgia 30322, United States
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5
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Design and structural characterisation of monomeric water-soluble α-helix and β-hairpin peptides: State-of-the-art. Arch Biochem Biophys 2019; 661:149-167. [DOI: 10.1016/j.abb.2018.11.014] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2018] [Revised: 11/06/2018] [Accepted: 11/14/2018] [Indexed: 02/06/2023]
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6
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Yingcharoen P, Kongtes C, Arayachukiat S, Suvarnapunya K, Vummaleti SVC, Wannakao S, Cavallo L, Poater A, D' Elia V. Assessing the pKa
-Dependent Activity of Hydroxyl Hydrogen Bond Donors in the Organocatalyzed Cycloaddition of Carbon Dioxide to Epoxides: Experimental and Theoretical Study. Adv Synth Catal 2018. [DOI: 10.1002/adsc.201801093] [Citation(s) in RCA: 73] [Impact Index Per Article: 12.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Prapussorn Yingcharoen
- Department of Materials Science and Engineering, School of Molecular Science and Engineering; Vidyasirimedhi Institute of Science and Technology, (VISTEC); Wang Chan Thailand
| | - Chutima Kongtes
- Department of Materials Science and Engineering, School of Molecular Science and Engineering; Vidyasirimedhi Institute of Science and Technology, (VISTEC); Wang Chan Thailand
| | - Sunatda Arayachukiat
- Department of Materials Science and Engineering, School of Molecular Science and Engineering; Vidyasirimedhi Institute of Science and Technology, (VISTEC); Wang Chan Thailand
| | - Kittipong Suvarnapunya
- Department of Materials Science and Engineering, School of Molecular Science and Engineering; Vidyasirimedhi Institute of Science and Technology, (VISTEC); Wang Chan Thailand
- Department of Immunology, Faculty of Medicine, Siriraj Hospital; Mahidol University; Bangkok 10700 Thailand
| | - Sai V. C. Vummaleti
- King Abdullah University of Science & Technology; KAUST Catalysis Center (KCC); 23955-6900 Thuwal Saudi Arabia
| | - Sippakorn Wannakao
- Department of Materials Science and Engineering, School of Molecular Science and Engineering; Vidyasirimedhi Institute of Science and Technology, (VISTEC); Wang Chan Thailand
| | - Luigi Cavallo
- King Abdullah University of Science & Technology; KAUST Catalysis Center (KCC); 23955-6900 Thuwal Saudi Arabia
| | - Albert Poater
- Institut de Química Computacional i Catàlisi and Departament de Química; Universitat de Girona, c/Maria Aurèlia Capmany 69; 17003 Girona, Catalonia Spain
| | - Valerio D' Elia
- Department of Materials Science and Engineering, School of Molecular Science and Engineering; Vidyasirimedhi Institute of Science and Technology, (VISTEC); Wang Chan Thailand
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7
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Liu N, Xie YF, Wang C, Li SJ, Wei D, Li M, Dai B. Cooperative Multifunctional Organocatalysts for Ambient Conversion of Carbon Dioxide into Cyclic Carbonates. ACS Catal 2018. [DOI: 10.1021/acscatal.8b01925] [Citation(s) in RCA: 145] [Impact Index Per Article: 24.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Affiliation(s)
- Ning Liu
- School of Chemistry and Chemical Engineering, Key Laboratory for Green Processing of Chemical Engineering of Xinjiang Bingtuan, Shihezi University, North Fourth Road, Shihezi, Xinjiang 832003, People’s Republic of China
| | - Ya-Fei Xie
- School of Chemistry and Chemical Engineering, Key Laboratory for Green Processing of Chemical Engineering of Xinjiang Bingtuan, Shihezi University, North Fourth Road, Shihezi, Xinjiang 832003, People’s Republic of China
| | - Chuan Wang
- Department of Chemistry, University of Science and Technology of China, 96 Jinzhai Road, Hefei, Anhui 230026, People’s Republic of China
| | - Shi-Jun Li
- College of Chemistry and Molecular Engineering, Center of Computational Chemistry, Zhengzhou University, 100 Science Avenue, Zhengzhou, Henan 450001, People’s Republic of China
| | - Donghui Wei
- College of Chemistry and Molecular Engineering, Center of Computational Chemistry, Zhengzhou University, 100 Science Avenue, Zhengzhou, Henan 450001, People’s Republic of China
| | - Min Li
- School of Chemistry and Chemical Engineering, Key Laboratory for Green Processing of Chemical Engineering of Xinjiang Bingtuan, Shihezi University, North Fourth Road, Shihezi, Xinjiang 832003, People’s Republic of China
| | - Bin Dai
- School of Chemistry and Chemical Engineering, Key Laboratory for Green Processing of Chemical Engineering of Xinjiang Bingtuan, Shihezi University, North Fourth Road, Shihezi, Xinjiang 832003, People’s Republic of China
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8
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Rigling C, Kisunzu JK, Duschmalé J, Häussinger D, Wiesner M, Ebert MO, Wennemers H. Conformational Properties of a Peptidic Catalyst: Insights from NMR Spectroscopic Studies. J Am Chem Soc 2018; 140:10829-10838. [PMID: 30106584 DOI: 10.1021/jacs.8b05459] [Citation(s) in RCA: 42] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Peptides have become valuable as catalysts for a variety of different reactions, but little is known about the conformational properties of peptidic catalysts. We investigated the conformation of the peptide H-dPro-Pro-Glu-NH2, a highly reactive and stereoselective catalyst for conjugate addition reactions, and the corresponding enamine intermediate in solution by NMR spectroscopy and computational methods. The combination of nuclear Overhauser effects (NOEs), residual dipolar couplings (RDCs), J-couplings, and temperature coefficients revealed that the tripeptide adopts a single predominant conformation in its ground state. The structure is a type I β-turn, which gains stabilization from three hydrogen bonds that are cooperatively formed between all functional groups (secondary amine, carboxylic acid, amides) within the tripeptide. In contrast, the conformation of the enamine intermediate is significantly more flexible. The conformational ensemble of the enamine is still dominated by the β-turn, but the backbone and the side chain of the glutamic acid residue are more dynamic. The key to the switch between rigidity and flexibility of the peptidic catalyst is the CO2H group in the side chain of the glutamic acid residue, which acts as a lid that can open and close. As a result, the peptidic catalyst is able to adapt to the structural requirements of the intermediates and transition states of the catalytic cycle. These insights might explain the robustness and high reactivity of the peptidic catalyst, which exceeds that of other secondary amine-based organocatalysts. The data suggest that a balance between rigidity and flexibility, which is reminiscent of the dynamic nature of enzymes, is beneficial for peptidic catalysts and other synthetic catalysts.
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Affiliation(s)
- Carla Rigling
- Laboratorium für Organische Chemie , ETH Zürich , D-CHAB, Vladimir-Prelog-Weg 3 , 8093 Zürich , Switzerland
| | - Jessica K Kisunzu
- Laboratorium für Organische Chemie , ETH Zürich , D-CHAB, Vladimir-Prelog-Weg 3 , 8093 Zürich , Switzerland
| | - Jörg Duschmalé
- Laboratorium für Organische Chemie , ETH Zürich , D-CHAB, Vladimir-Prelog-Weg 3 , 8093 Zürich , Switzerland.,Department of Chemistry , University of Basel , St. Johanns-Ring 19 , 4056 Basel , Switzerland
| | - Daniel Häussinger
- Department of Chemistry , University of Basel , St. Johanns-Ring 19 , 4056 Basel , Switzerland
| | - Markus Wiesner
- Department of Chemistry , University of Basel , St. Johanns-Ring 19 , 4056 Basel , Switzerland
| | - Marc-Olivier Ebert
- Laboratorium für Organische Chemie , ETH Zürich , D-CHAB, Vladimir-Prelog-Weg 3 , 8093 Zürich , Switzerland
| | - Helma Wennemers
- Laboratorium für Organische Chemie , ETH Zürich , D-CHAB, Vladimir-Prelog-Weg 3 , 8093 Zürich , Switzerland
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9
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Lakshmi JK, Pattnaik B, Kavitha R, Mallavadhani UV, Jagadeesh B. Conformation of flexibly linked triterpene dimers by using RDC-enhanced NMR spectroscopy. J Mol Struct 2018. [DOI: 10.1016/j.molstruc.2018.02.083] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
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10
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Tappe NA, Reich RM, D'Elia V, Kühn FE. Current advances in the catalytic conversion of carbon dioxide by molecular catalysts: an update. Dalton Trans 2018; 47:13281-13313. [DOI: 10.1039/c8dt02346h] [Citation(s) in RCA: 89] [Impact Index Per Article: 14.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
Recent advances (2015–) in the catalytic conversion of CO2 by metal-based and metal-free systems are discussed.
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Affiliation(s)
- Nadine A. Tappe
- Molecular Catalysis
- Catalysis Research Center and Department of Chemistry
- Technische Universität München
- 85747 Garching bei München
- Germany
| | - Robert M. Reich
- Molecular Catalysis
- Catalysis Research Center and Department of Chemistry
- Technische Universität München
- 85747 Garching bei München
- Germany
| | - Valerio D'Elia
- Department of Materials Science and Engineering
- School of Molecular Science and Engineering
- Vidyasirimedhi Institute of Science and Technology
- Rayong
- Thailand
| | - Fritz E. Kühn
- Molecular Catalysis
- Catalysis Research Center and Department of Chemistry
- Technische Universität München
- 85747 Garching bei München
- Germany
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11
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Illa O, Porcar-Tost O, Robledillo C, Elvira C, Nolis P, Reiser O, Branchadell V, Ortuño RM. Stereoselectivity of Proline/Cyclobutane Amino Acid-Containing Peptide Organocatalysts for Asymmetric Aldol Additions: A Rationale. J Org Chem 2017; 83:350-363. [PMID: 29186658 DOI: 10.1021/acs.joc.7b02745] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
Several α,β,α- or α,γ,α-tripeptides, consisting of a central cyclobutane β- or γ-amino acid being flanked by two d- or l-proline residues, have been synthesized and tested as organocatalysts in asymmetric aldol additions. High yields and enantioselectivities have been achieved with α,γ,α-tripeptides, being superior to peptides containing a cyclobutane β-amino acid residue. This is probably due to their high rigidity, which hinders some of the peptide catalysts to adopt the proper active conformation. This reasoning correlates with the major conformation of the peptides in the ground state, as suggested by 1H NMR and computational calculations. The configuration of the aldol products is controlled by the proline chirality, and consequently, the R/S configuration of aldol products can be tuned by the use of either commercially available d- or l-proline. The enantioselectivity in the aldol reactions is reversed if the reactions are carried out in the presence of water or other protic solvents such as methanol. Spectroscopic and theoretical investigations revealed that this effect is not the consequence of conformational changes in the catalyst but rather caused by the participation of a water molecule in the rate determining transition state, in such a way that the preferential nucleophilic attack is oriented to the opposite enantiotopic aldehyde face.
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Affiliation(s)
- Ona Illa
- Departament de Química, Universitat Autònoma de Barcelona , 08193 Cerdanyola del Vallès, Spain
| | - Oriol Porcar-Tost
- Departament de Química, Universitat Autònoma de Barcelona , 08193 Cerdanyola del Vallès, Spain
| | - Carme Robledillo
- Departament de Química, Universitat Autònoma de Barcelona , 08193 Cerdanyola del Vallès, Spain
| | - Carlos Elvira
- Departament de Química, Universitat Autònoma de Barcelona , 08193 Cerdanyola del Vallès, Spain
| | - Pau Nolis
- Servei de Ressonància Magnètica Nuclear, Universitat Autònoma de Barcelona , 08193 Cerdanyola del Vallès, Spain
| | - Oliver Reiser
- Institut für Organische Chemie, Universität Regensburg , Universitätsstr. 31, 95053 Regensburg, Germany
| | - Vicenç Branchadell
- Departament de Química, Universitat Autònoma de Barcelona , 08193 Cerdanyola del Vallès, Spain
| | - Rosa M Ortuño
- Departament de Química, Universitat Autònoma de Barcelona , 08193 Cerdanyola del Vallès, Spain
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12
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Shaikh RR, Pornpraprom S, D’Elia V. Catalytic Strategies for the Cycloaddition of Pure, Diluted, and Waste CO2 to Epoxides under Ambient Conditions. ACS Catal 2017. [DOI: 10.1021/acscatal.7b03580] [Citation(s) in RCA: 413] [Impact Index Per Article: 59.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Rafik Rajjak Shaikh
- Department of Materials Science
and Engineering, School of Molecular Science and Engineering, Vidyasirimedhi Institute of Science and Technology (VISTEC), 555 Moo 1, Payupnai, Wangchan, Rayong 21210, Thailand
| | - Suriyaporn Pornpraprom
- Department of Materials Science
and Engineering, School of Molecular Science and Engineering, Vidyasirimedhi Institute of Science and Technology (VISTEC), 555 Moo 1, Payupnai, Wangchan, Rayong 21210, Thailand
| | - Valerio D’Elia
- Department of Materials Science
and Engineering, School of Molecular Science and Engineering, Vidyasirimedhi Institute of Science and Technology (VISTEC), 555 Moo 1, Payupnai, Wangchan, Rayong 21210, Thailand
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13
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Rigling C, Ebert MO. RDC-enhanced structure calculation of a β-heptapeptide in methanol. MAGNETIC RESONANCE IN CHEMISTRY : MRC 2017; 55:655-661. [PMID: 27976817 DOI: 10.1002/mrc.4569] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/04/2016] [Revised: 12/06/2016] [Accepted: 12/12/2016] [Indexed: 05/28/2023]
Abstract
Residual dipolar couplings (RDCs) are a rich source of structural information that goes beyond the range covered by the nuclear Overhauser effect or scalar coupling constants. They can only be measured in partially oriented samples. RDC studies of peptides in organic solvents have so far been focused on samples in chloroform or DMSO. Here, we show that stretched poly(vinyl acetate) can be used for the partial alignment of a linear β-peptide with proteinogenic side chains in methanol. 1 DCH , 1 DNH , and 2 DHH RDCs were collected with this sample and included as restraints in a simulated annealing calculation. Incorporation of RDCs in the structure calculation process improves the long-range definition in the backbone of the resulting 314 -helix and uncovers side-chain mobility. Experimental side-chain RDCs of the central leucine and valine residues are in good agreement with predicted values from a local three-state model. Copyright © 2016 John Wiley & Sons, Ltd.
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Affiliation(s)
- Carla Rigling
- Laboratorium für Organische Chemie, ETH Zürich, Vladimir-Prelog-Weg 3, 8093, Zürich, Switzerland
| | - Marc-Olivier Ebert
- Laboratorium für Organische Chemie, ETH Zürich, Vladimir-Prelog-Weg 3, 8093, Zürich, Switzerland
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14
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Pilsl LKA, Ertl T, Reiser O. Enantioselective Three-Step Synthesis of Homo-β-proline: A Donor–Acceptor Cyclopropane as Key Intermediate. Org Lett 2017; 19:2754-2757. [DOI: 10.1021/acs.orglett.7b01111] [Citation(s) in RCA: 44] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Ludwig K. A. Pilsl
- Institut für Organische
Chemie, Universität Regensburg, Universitätsstr. 31, 93053 Regensburg, Germany
| | - Thomas Ertl
- Institut für Organische
Chemie, Universität Regensburg, Universitätsstr. 31, 93053 Regensburg, Germany
| | - Oliver Reiser
- Institut für Organische
Chemie, Universität Regensburg, Universitätsstr. 31, 93053 Regensburg, Germany
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15
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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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16
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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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17
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Kakita VMR, Rachineni K, Bharatam J. Unambiguous determination of conformation and relative configuration of a multiple stereo-centre molecule Rifamycin-S by using scaled residual dipolar couplings: A case study. J Mol Struct 2013. [DOI: 10.1016/j.molstruc.2013.08.061] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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18
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Banning JE, Gentillon J, Ryabchuk PG, Prosser AR, Rogers A, Edwards A, Holtzen A, Babkov IA, Rubina M, Rubin M. Formal Substitution of Bromocyclopropanes with Nitrogen Nucleophiles. J Org Chem 2013; 78:7601-16. [DOI: 10.1021/jo4011798] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Joseph E. Banning
- Department of Chemistry, The University
of Kansas, 1251 Wescoe Hall Drive, Lawrence, Kansas 66045-75832
| | - Jacob Gentillon
- Department of Chemistry, The University
of Kansas, 1251 Wescoe Hall Drive, Lawrence, Kansas 66045-75832
| | - Pavel G. Ryabchuk
- Department of Chemistry, The University
of Kansas, 1251 Wescoe Hall Drive, Lawrence, Kansas 66045-75832
| | - Anthony R. Prosser
- Department of Chemistry, The University
of Kansas, 1251 Wescoe Hall Drive, Lawrence, Kansas 66045-75832
| | - Andrew Rogers
- Department of Chemistry, The University
of Kansas, 1251 Wescoe Hall Drive, Lawrence, Kansas 66045-75832
| | - Andrew Edwards
- Department of Chemistry, The University
of Kansas, 1251 Wescoe Hall Drive, Lawrence, Kansas 66045-75832
| | - Andrew Holtzen
- Department of Chemistry, The University
of Kansas, 1251 Wescoe Hall Drive, Lawrence, Kansas 66045-75832
| | - Ivan A. Babkov
- Department of Chemistry, The University
of Kansas, 1251 Wescoe Hall Drive, Lawrence, Kansas 66045-75832
| | - Marina Rubina
- Department of Chemistry, The University
of Kansas, 1251 Wescoe Hall Drive, Lawrence, Kansas 66045-75832
| | - Michael Rubin
- Department of Chemistry, The University
of Kansas, 1251 Wescoe Hall Drive, Lawrence, Kansas 66045-75832
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19
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Hallwass F, Schmidt M, Sun H, Mazur A, Kummerlöwe G, Luy B, Navarro-Vázquez A, Griesinger C, Reinscheid UM. Residuale chemische Verschiebungsanisotropie (RCSAs) - ein Parameter zur Konfigurationsanalyse kleiner Moleküle. Angew Chem Int Ed Engl 2011. [DOI: 10.1002/ange.201101784] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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20
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Hallwass F, Schmidt M, Sun H, Mazur A, Kummerlöwe G, Luy B, Navarro-Vázquez A, Griesinger C, Reinscheid UM. Residual Chemical Shift Anisotropy (RCSA): A Tool for the Analysis of the Configuration of Small Molecules. Angew Chem Int Ed Engl 2011; 50:9487-90. [DOI: 10.1002/anie.201101784] [Citation(s) in RCA: 69] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2011] [Indexed: 11/07/2022]
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21
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Pilsl LKA, Reiser O. α/β-Peptide foldamers: state of the art. Amino Acids 2011; 41:709-18. [DOI: 10.1007/s00726-011-0894-2] [Citation(s) in RCA: 138] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2011] [Accepted: 03/18/2011] [Indexed: 11/24/2022]
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22
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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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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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Cipolla L, Airoldi C, Bini D, Gregori M, Marcelo F, Jiménez-Barbero J, Nicotra F. Fructose-Based Proline Analogues: Exploring the Prolyl trans/cis-Amide Rotamer Population in Model Peptides. European J Org Chem 2010. [DOI: 10.1002/ejoc.201000983] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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25
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Kummerlöwe G, Behl M, Lendlein A, Luy B. Artifact-free measurement of residual dipolar couplings in DMSO by the use of cross-linked perdeuterated poly(acrylonitrile) as alignment medium. Chem Commun (Camb) 2010; 46:8273-5. [DOI: 10.1039/c0cc02730h] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Kiran MU, Sudhakar A, Klages J, Kummerlöwe G, Luy B, Jagadeesh B. RDC Enhanced NMR Spectroscopy in Organic Solvent Media: The Importance for the Experimental Determination of Periodic Hydrogen Bonded Secondary Structures. J Am Chem Soc 2009; 131:15590-1. [DOI: 10.1021/ja906796v] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Marelli Udaya Kiran
- Centre for Nuclear Magnetic Resonance, Indian Institute of Chemical Technology, Hyderabad 500 007, India, and Department Chemie, Lehrstuhl für Organische Chemie II, Technische Universität München, 85747 Garching, Germany
| | - Ambadi Sudhakar
- Centre for Nuclear Magnetic Resonance, Indian Institute of Chemical Technology, Hyderabad 500 007, India, and Department Chemie, Lehrstuhl für Organische Chemie II, Technische Universität München, 85747 Garching, Germany
| | - Jochen Klages
- Centre for Nuclear Magnetic Resonance, Indian Institute of Chemical Technology, Hyderabad 500 007, India, and Department Chemie, Lehrstuhl für Organische Chemie II, Technische Universität München, 85747 Garching, Germany
| | - Grit Kummerlöwe
- Centre for Nuclear Magnetic Resonance, Indian Institute of Chemical Technology, Hyderabad 500 007, India, and Department Chemie, Lehrstuhl für Organische Chemie II, Technische Universität München, 85747 Garching, Germany
| | - Burkhard Luy
- Centre for Nuclear Magnetic Resonance, Indian Institute of Chemical Technology, Hyderabad 500 007, India, and Department Chemie, Lehrstuhl für Organische Chemie II, Technische Universität München, 85747 Garching, Germany
| | - Bharatam Jagadeesh
- Centre for Nuclear Magnetic Resonance, Indian Institute of Chemical Technology, Hyderabad 500 007, India, and Department Chemie, Lehrstuhl für Organische Chemie II, Technische Universität München, 85747 Garching, Germany
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