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Weinzierl D, Waser M. Chiral isothiourea-catalyzed kinetic resolution of 4-hydroxy[2.2]paracyclophane. Beilstein J Org Chem 2021; 17:800-804. [PMID: 33889220 PMCID: PMC8042488 DOI: 10.3762/bjoc.17.68] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2021] [Accepted: 04/01/2021] [Indexed: 01/07/2023] Open
Abstract
We herein report a method for the kinetic resolution of racemic 4-hydroxy[2.2]paracyclophane by means of a chiral isothiourea-catalyzed acylation with isobutyric anhydride. This protocol allows for a reasonable synthetically useful s-factor of 20 and provides a novel entry to obtain this interesting planar chiral motive in an enantioenriched manner.
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Affiliation(s)
- David Weinzierl
- Institute of Organic Chemistry, Johannes Kepler University Linz, Altenbergerstrasse 69, 4040 Linz, Austria
| | - Mario Waser
- Institute of Organic Chemistry, Johannes Kepler University Linz, Altenbergerstrasse 69, 4040 Linz, Austria
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2
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Aida Y, Nogami J, Sugiyama H, Uekusa H, Tanaka K. Enantioselective Synthesis of Polycyclic Aromatic Hydrocarbon (PAH)-Based Planar Chiral Bent Cyclophanes by Rhodium-Catalyzed [2+2+2] Cycloaddition. Chemistry 2020; 26:12579-12588. [PMID: 32350943 DOI: 10.1002/chem.202001450] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2020] [Revised: 04/28/2020] [Indexed: 11/08/2022]
Abstract
The enantioselective synthesis of polycyclic aromatic hydrocarbon (PAH)-based planar chiral cyclophanes was achieved for the first time by the rhodium-catalyzed intramolecular regio- and enantioselective [2+2+2] cycloaddition of tethered diyne-benzofulvenes followed by stepwise oxidative transformations. The thus synthesized planar chiral bent cyclophanes, that possess bent p-terphenyl- and 9-fluorenone-cores, were converted to 9-fluorenol-based ones with excellent ee values of >99 % by diastereoselective 1,2-reduction. These 9-fluorenol-based cyclophanes exhibited high fluorescence quantum yields, which were significantly higher than that of an acyclic reference molecule (78-82 % vs. 48 %). The bending effect on the chiroptical property was also examined, which revealed that the anisotropy factors (gabs values) for electronic circular dichroism (ECD) of these 9-fluorenol-based planar chiral bent cyclophanes increase as the tether length becomes shorter.
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Affiliation(s)
- Yukimasa Aida
- Department of Chemical Science and Engineering, Tokyo Institute of Technology, O-okayama, Meguro-ku, Tokyo, 152-8550, Japan
| | - Juntaro Nogami
- Department of Chemical Science and Engineering, Tokyo Institute of Technology, O-okayama, Meguro-ku, Tokyo, 152-8550, Japan
| | - Haruki Sugiyama
- Research and Education Center for Natural Sciences, Keio University, Hiyoshi 4-1-1, Kohoku, Yokohama, Japan
| | - Hidehiro Uekusa
- Department of Chemistry, Tokyo Institute of Technology, O-okayama, Meguro-ku, Tokyo, 152-8550, Japan
| | - Ken Tanaka
- Department of Chemical Science and Engineering, Tokyo Institute of Technology, O-okayama, Meguro-ku, Tokyo, 152-8550, Japan
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3
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Tani K, Imafuku R, Miyanaga K, Masaki ME, Kato H, Hori K, Kubono K, Taneda M, Harada T, Goto K, Tani F, Mori T. Combined Experimental and Theoretical Studies on Planar Chirality of Partially Overlapped C2-Symmetric [3.3](3,9)Dicarbazolophanes. J Phys Chem A 2020; 124:2057-2063. [DOI: 10.1021/acs.jpca.0c00286] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Keita Tani
- Division of Natural Science, Osaka Kyoiku University, Asahigaoka, Kashiwara, Osaka 582-8582, Japan
| | - Risa Imafuku
- Division of Natural Science, Osaka Kyoiku University, Asahigaoka, Kashiwara, Osaka 582-8582, Japan
| | - Kanae Miyanaga
- Division of Natural Science, Osaka Kyoiku University, Asahigaoka, Kashiwara, Osaka 582-8582, Japan
| | - Miyuki Eiraku Masaki
- Division of Natural Science, Osaka Kyoiku University, Asahigaoka, Kashiwara, Osaka 582-8582, Japan
| | - Haruka Kato
- Division of Natural Science, Osaka Kyoiku University, Asahigaoka, Kashiwara, Osaka 582-8582, Japan
| | - Kazushige Hori
- Division of Natural Science, Osaka Kyoiku University, Asahigaoka, Kashiwara, Osaka 582-8582, Japan
| | - Koji Kubono
- Division of Natural Science, Osaka Kyoiku University, Asahigaoka, Kashiwara, Osaka 582-8582, Japan
| | - Masatsugu Taneda
- Division of Natural Science, Osaka Kyoiku University, Asahigaoka, Kashiwara, Osaka 582-8582, Japan
| | - Takunori Harada
- Department of Integrated Science and Technology, Faculty of Science and Technology, Oita University, Dannoharu 700, Oita City 870-1192, Japan
| | - Kenta Goto
- Institute for Materials Chemistry and Engineering, Kyushu University, Motooka, Nishi-ku, Fukuoka 819-0395, Japan
| | - Fumito Tani
- Institute for Materials Chemistry and Engineering, Kyushu University, Motooka, Nishi-ku, Fukuoka 819-0395, Japan
| | - Tadashi Mori
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, 2-1 Yamada-oka, Suita 565-0871, Japan
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4
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Tanaka H, Inoue Y, Mori T. Circularly Polarized Luminescence and Circular Dichroisms in Small Organic Molecules: Correlation between Excitation and Emission Dissymmetry Factors. CHEMPHOTOCHEM 2018. [DOI: 10.1002/cptc.201800015] [Citation(s) in RCA: 349] [Impact Index Per Article: 58.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Hiroki Tanaka
- Department of Applied Chemistry, Graduate School of Engineering; Osaka University; 2-1 Yamada-oka Suita 565-0871 Japan
| | - Yoshihisa Inoue
- Department of Applied Chemistry, Graduate School of Engineering; Osaka University; 2-1 Yamada-oka Suita 565-0871 Japan
| | - Tadashi Mori
- Department of Applied Chemistry, Graduate School of Engineering; Osaka University; 2-1 Yamada-oka Suita 565-0871 Japan
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5
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Tanaka K. Catalytic Enantioselective Synthesis of Planar Chiral Cyclophanes. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2018. [DOI: 10.1246/bcsj.20170346] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Ken Tanaka
- Department of Chemical Science and Engineering, Tokyo Institute of Technology, Ookayama, Meguro-ku, Tokyo 152-8550
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6
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Mézière C, Allain M, Oliveras-Gonzalez C, Cauchy T, Vanthuyne N, Sarbu LG, Birsa LM, Pop F, Avarvari N. Tetrathiafulvalene-[2.2]paracyclophanes: Synthesis, crystal structures, and chiroptical properties. Chirality 2018; 30:568-575. [DOI: 10.1002/chir.22831] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2017] [Accepted: 01/08/2018] [Indexed: 01/03/2023]
Affiliation(s)
- Cécile Mézière
- Laboratoire MOLTECH-Anjou, UMR 6200; Université d'Angers; Angers France
| | - Magali Allain
- Laboratoire MOLTECH-Anjou, UMR 6200; Université d'Angers; Angers France
| | | | - Thomas Cauchy
- Laboratoire MOLTECH-Anjou, UMR 6200; Université d'Angers; Angers France
| | - Nicolas Vanthuyne
- Aix Marseille Univ, CNRS, Centrale Marseille, iSm2; Marseille France
| | - Laura G. Sarbu
- Department of Chemistry; “Al. I. Cuza” University of Iasi; Iasi Romania
| | - Lucian M. Birsa
- Department of Chemistry; “Al. I. Cuza” University of Iasi; Iasi Romania
| | - Flavia Pop
- Laboratoire MOLTECH-Anjou, UMR 6200; Université d'Angers; Angers France
| | - Narcis Avarvari
- Laboratoire MOLTECH-Anjou, UMR 6200; Université d'Angers; Angers France
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7
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Toda M, Inoue Y, Mori T. Circular Dichroisms of Mono- and Dibromo[2.2]paracyclophanes: A Combined Experimental and Theoretical Study. ACS OMEGA 2018; 3:22-29. [PMID: 31457876 PMCID: PMC6641403 DOI: 10.1021/acsomega.7b01642] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/25/2017] [Accepted: 11/22/2017] [Indexed: 06/10/2023]
Abstract
Circular dichroisms (CDs) of planar chiral 4-bromo[2.2]paracyclophane (1) and three isomeric dibromo[2.2]paracyclophanes (p-2, m'-2, and o'-2) were investigated experimentally and theoretically. They all exhibited strong multisignate Cotton effects (CEs) at the 1Lb, 1La, and 1B transitions of the component (bromo)benzene chromophore and were comparable to each other. For all of the cyclophanes examined, the enantiomer that eluted earlier from a chiral high-performance liquid chromatography column (Chiralcel IA or IB) exhibited negative and positive CEs at the 1Lb and 1La bands, respectively, which were followed by a more complicated pattern of CDs at the higher-energy bands. These CD features were well reproduced by quantum chemical calculations, allowing us to unambiguously assign the absolute configurations of the first-eluted enantiomers as R p in all of the cases examined. Interestingly, the CDs of 1 and 2, although largely comparable in shape, were still sensitive to the number and pattern of bromine substitution, showing closer resemblance between m'-2 and o'-2 and between p-2 and 1. The theoretical calculations also reproduced successfully these spectral resemblance between them. The anisotropy (g) factors for the 1Lb bands of these cyclophanes were considerably large (∼10-2), whereas those for the 1La band were conventional in the order of 10-3. In addition, a weak CE was observed in the low-energy region at around 320 nm, which turned out to originate from the interplanar interaction and is hence assigned to the "cyclophane band". The experimental g factors of this band were fairly large in the order of 10-2, but the computation turned out to be quite challenging and were less well reproduced theoretically, ascribable to the forbidden nature of the transition.
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8
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Shimizu A, Inoue Y, Mori T. A Combined Experimental and Theoretical Study on the Circular Dichroism of Staggered and Eclipsed Forms of Dimethoxy[2.2]-, [3.2]-, and [3.3]Pyridinophanes and Their Protonated Forms. J Phys Chem A 2017; 121:8389-8398. [DOI: 10.1021/acs.jpca.7b08623] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Akinori Shimizu
- Department of Applied Chemistry,
Graduate School of Engineering, Osaka University, 2-1 Yamada-oka, Suita, Osaka 565-0871, Japan
| | - Yoshihisa Inoue
- Department of Applied Chemistry,
Graduate School of Engineering, Osaka University, 2-1 Yamada-oka, Suita, Osaka 565-0871, Japan
| | - Tadashi Mori
- Department of Applied Chemistry,
Graduate School of Engineering, Osaka University, 2-1 Yamada-oka, Suita, Osaka 565-0871, Japan
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9
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Shimizu A, Nagasaki K, Inoue Y, Mori T. Chiroptical properties of dithia[3.3]cyclophanes composed of anthracene and pyridine/pyridinium moieties: A combined experimental and theoretical study. Chirality 2017; 29:677-683. [PMID: 28833559 DOI: 10.1002/chir.22740] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2017] [Revised: 07/06/2017] [Accepted: 07/10/2017] [Indexed: 11/12/2022]
Abstract
Circular dichroisms (CDs) of neutral and protonated [3.3]anthracenopyridinophane (1 and 1-H+ ) were investigated experimentally and theoretically. Introducing an anthracene moiety with extended conjugation affected the cyclophane structure with the bent angles being appreciably reduced from those of parent [3.3]pyridinophane. The Cotton effects (CEs) observed at the 1 Bb band for both 1 and 1-H+ were fairly strong and apparently bisignate, which, however, turned out not to be a simple exciton couplet but to be composed of multiple transitions. In contrast, the CEs were much weaker in the 1 La band region. The spectral changes upon protonation were less significant compared with the parent pyridinophane, being dominated by the local transitions of anthracene. Nevertheless, the CD spectra of 1 and 1-H+ were well reproduced by theoretical calculations to allow us an unambiguous absolute configuration determination of the first high-performance liquid chromatography (HPLC) elute (from Chiralcel IB column) as Sp . The transannular interactions between the anthracene and pyridine/pyridinium units were examined by UV-vis and fluorescence spectroscopy to reveal a charge-transfer (CT) band in the low-energy region, particularly for 1-H+ . Despite the comparable CT interactions, the CE at the CT band was much stronger for the anthracenopyridinophane than for the parent pyridinophane, affording an anisotropy (g) factor as large as 4 × 10-3 .
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Affiliation(s)
- Akinori Shimizu
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, Osaka, Japan
| | - Keisuke Nagasaki
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, Osaka, Japan
| | - Yoshihisa Inoue
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, Osaka, Japan
| | - Tadashi Mori
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, Osaka, Japan
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10
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Shimizu A, Inoue Y, Mori T. Protonation-Induced Sign Inversion of the Cotton Effects of Pyridinophanes. A Combined Experimental and Theoretical Study. J Phys Chem A 2017; 121:977-985. [DOI: 10.1021/acs.jpca.6b12287] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Akinori Shimizu
- Department
of Applied Chemistry, Graduate School of Engineering, Osaka University, 2-1
Yamada-oka, Suita, Osaka 565-0871, Japan
| | - Yoshihisa Inoue
- Department
of Applied Chemistry, Graduate School of Engineering, Osaka University, 2-1
Yamada-oka, Suita, Osaka 565-0871, Japan
| | - Tadashi Mori
- Department
of Applied Chemistry, Graduate School of Engineering, Osaka University, 2-1
Yamada-oka, Suita, Osaka 565-0871, Japan
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11
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Katoono R, Kawai S, Suzuki T. Dynamic helical cyclophanes with two quadruply-bridged planes arranged in an "obverse and/or reverse" relation. Chem Sci 2016; 7:3240-3247. [PMID: 29997816 PMCID: PMC6006470 DOI: 10.1039/c5sc04673d] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2015] [Accepted: 01/29/2016] [Indexed: 11/21/2022] Open
Abstract
We describe the design of two types of cyclophanes that generate dynamic helicity through the twisting of two planes in a clockwise or counterclockwise direction to give (M)- or (P)-helicity. We used a rectangular and anisotropic plane of 1,2,4,5-tetrakis(phenylethynyl)benzene (TPEB), since it can be stacked in pairs in two ways, in parallel or orthogonally, to be identified as distinct cyclophane molecules. We adopted a synthetic strategy for obtaining these two cyclophanes as a mixture using a macrocyclic intermediate that possessed two rotatable phenyl rings. We introduced necessary parts into the rotators to give a mixture of rotational isomers leading to a parallel or orthogonal arrangement of TPEBs, and then doubly bridged two planes of TPEB to form quadruply-bridged cyclophanes. We consider that such two planes in each cyclophane are in an "obverse and/or reverse" relation. In each cyclophane, we found unique dynamic helical forms with (M)- or (P)-helicity as well as an inherently non-chiral form. Normally, the screw-sense preference of dynamic helicity would be controlled through the intramolecular or supramolecular transmission of central chirality, when a chiral auxiliary is attached to the cyclophanes or a chiral guest is allowed to form a complex with the cyclophanes. In a case where two different substitution groups were used on bridging units to generate planar chirality in each cyclophane, the screw-sense preference was controlled through the arrangement of these substitution groups, and did not depend on the transmission of central chirality. Two different substitution groups desymmetrize the enantiomeric forms with (M)- or (P)-helicity generated in each dynamic helical cyclophane so that two dynamic helical forms with (M)- or (P)-helicity can be in a diastereomeric relation. Thus, a particular screw sense of dynamic helicity can be preferred, regardless of whether or not the two substitution groups possess some chiral element.
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Affiliation(s)
- Ryo Katoono
- Department of Chemistry , Faculty of Science , Hokkaido University , Sapporo 060-0810 , Japan . ; ; Tel: +81 11 706 3396
| | - Shunsuke Kawai
- Department of Chemistry , Faculty of Science , Hokkaido University , Sapporo 060-0810 , Japan . ; ; Tel: +81 11 706 3396
| | - Takanori Suzuki
- Department of Chemistry , Faculty of Science , Hokkaido University , Sapporo 060-0810 , Japan . ; ; Tel: +81 11 706 3396
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Katoono R, Suzuki T. Planar chiral desymmetrization of a two-layered cyclophane and control of dynamic helicity through the arrangement of two nonstereogenic centers. Chem Commun (Camb) 2016; 52:1029-31. [PMID: 26592752 DOI: 10.1039/c5cc09069e] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Dynamic helicity generated in a configurationally stable cyclophane is controlled through the arrangement of two nonstereogenic centers with different dimensions.
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Affiliation(s)
- Ryo Katoono
- Department of Chemistry
- Faculty of Science
- Hokkaido University
- Sapporo 060-0810
- Japan
| | - Takanori Suzuki
- Department of Chemistry
- Faculty of Science
- Hokkaido University
- Sapporo 060-0810
- Japan
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13
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Affiliation(s)
- Minghua Liu
- Beijing National Laboratory for Molecular Science (BNLMS), CAS Key Laboratory of Colloid, Interface and Chemical Thermodynamics, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, People's Republic of China
| | - Li Zhang
- Beijing National Laboratory for Molecular Science (BNLMS), CAS Key Laboratory of Colloid, Interface and Chemical Thermodynamics, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, People's Republic of China
| | - Tianyu Wang
- Beijing National Laboratory for Molecular Science (BNLMS), CAS Key Laboratory of Colloid, Interface and Chemical Thermodynamics, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, People's Republic of China
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14
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Akagawa K, Akiyama M, Kudo K. Peptide-Catalyzed Desymmetrization of an Achiral Ferrocenyl Compound To Induce Planar Chirality. European J Org Chem 2015. [DOI: 10.1002/ejoc.201500428] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
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15
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Stanyon HF, Cong X, Chen Y, Shahidullah N, Rossetti G, Dreyer J, Papamokos G, Carloni P, Viles JH. Developing predictive rules for coordination geometry from visible circular dichroism of copper(II) and nickel(II) ions in histidine and amide main-chain complexes. FEBS J 2014; 281:3945-54. [DOI: 10.1111/febs.12934] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2014] [Revised: 07/03/2014] [Accepted: 07/14/2014] [Indexed: 01/08/2023]
Affiliation(s)
- Helen F. Stanyon
- School of Biological and Chemical Sciences; Queen Mary; University of London; UK
| | - Xiaojing Cong
- Computational Biophysics; German Research School for Simulation Sciences (Joint venture of RWTH Aachen University and Forschungszentrum Jülich); Germany
- Institute for Advanced Simulations IAS-5; Computational Biomedicine; Forschungszentrum Jülich Germany
| | - Yan Chen
- School of Biological and Chemical Sciences; Queen Mary; University of London; UK
| | - Nabeela Shahidullah
- School of Biological and Chemical Sciences; Queen Mary; University of London; UK
| | - Giulia Rossetti
- Computational Biophysics; German Research School for Simulation Sciences (Joint venture of RWTH Aachen University and Forschungszentrum Jülich); Germany
- Institute for Advanced Simulations IAS-5; Computational Biomedicine; Forschungszentrum Jülich Germany
- Jülich Supercomputing Center; Forschungszentrum Jülich Germany
- Computational Biomedicine Section INM-9; Institute for Neuroscience and Medicine; Jülich Germany
| | - Jens Dreyer
- Computational Biophysics; German Research School for Simulation Sciences (Joint venture of RWTH Aachen University and Forschungszentrum Jülich); Germany
- Institute for Advanced Simulations IAS-5; Computational Biomedicine; Forschungszentrum Jülich Germany
| | - George Papamokos
- Computational Biophysics; German Research School for Simulation Sciences (Joint venture of RWTH Aachen University and Forschungszentrum Jülich); Germany
- Institute for Advanced Simulations IAS-5; Computational Biomedicine; Forschungszentrum Jülich Germany
- Scuola Internazionale Superiore di Studi Avanzati; Trieste Italy
| | - Paolo Carloni
- Computational Biophysics; German Research School for Simulation Sciences (Joint venture of RWTH Aachen University and Forschungszentrum Jülich); Germany
- Institute for Advanced Simulations IAS-5; Computational Biomedicine; Forschungszentrum Jülich Germany
- Computational Biomedicine Section INM-9; Institute for Neuroscience and Medicine; Jülich Germany
| | - John H. Viles
- School of Biological and Chemical Sciences; Queen Mary; University of London; UK
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16
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Goto H, Sudoh M, Kawamoto K, Sugimoto H, Inoue S. Isocyanurates with Planar Chirality: Design, Optical Resolution, and Isomerization. Chirality 2012; 24:867-78. [DOI: 10.1002/chir.22093] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2012] [Accepted: 06/06/2012] [Indexed: 11/09/2022]
Affiliation(s)
- Hidetoshi Goto
- Department of Industrial Chemistry, Faculty of Engineering; Tokyo University of Science; Tokyo Japan
| | - Masanao Sudoh
- Department of Industrial Chemistry, Faculty of Engineering; Tokyo University of Science; Tokyo Japan
| | - Keiko Kawamoto
- Department of Industrial Chemistry, Faculty of Engineering; Tokyo University of Science; Tokyo Japan
| | - Hiroshi Sugimoto
- Department of Industrial Chemistry, Faculty of Engineering; Tokyo University of Science; Tokyo Japan
| | - Shohei Inoue
- Department of Industrial Chemistry, Faculty of Engineering; Tokyo University of Science; Tokyo Japan
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17
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Abbate S, Lebon F, Lepri S, Longhi G, Gangemi R, Spizzichino S, Bellachioma G, Ruzziconi R. Vibrational Circular Dichroism: A Valuable Tool for Conformational Analysis and Absolute Configuration Assignment of Chiral 1-Aryl-2,2,2-Trifluoroethanols. Chemphyschem 2011; 12:3519-23. [DOI: 10.1002/cphc.201100551] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2011] [Indexed: 11/07/2022]
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