1
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Schreck C, Schönfeld S, Liebing P, Hörner G, Weber B. Binucleating Jäger-type {(N 2O 2) 2} 4- ligands: magnetic and electronic interactions of Fe(II), Ni(II) and Cu(II) across an in-plane TTF-bridge. Dalton Trans 2024; 53:9092-9105. [PMID: 38738956 DOI: 10.1039/d4dt00479e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/14/2024]
Abstract
The simultaneous presence of different electrophores provides an interesting playground for responsive materials. Herein, we present the incorporation of a twice-reversibly oxidizable tetrathiafulvalene (TTF) unit into a binucleating ligand, bridging two metal centers in a fully conjugated plane. A two-step synthesis scheme gave the D2h symmetric Schiff base-like ligand H4L in moderate yields from which the corresponding copper(II) [Cu2L], nickel(II) [Ni2L], [Ni2L(py)4] and iron(II) complexes [Fe2L(py)4], [Fe2L(dmap)4] and [Fe2L(bpee)2]·1 Tol could be obtained. Characterization was performed through 1H-NMR, IR, UV-vis and 57Fe-Mössbauer spectroscopy, SQUID magnetometry and cyclic voltammetry, supported by density functional theory (DFT) calculations. Single crystal X-ray analysis of [Ni2L(py)4] revealed six-coordinate paramagnetic centers, whereas [Ni2L] underwent gradual coordination induced spin state switching (CISSS) in solution. The magnetic independence of both metal centers is echoed by close-to-ideal Curie-plots of the [Cu2L] system and the gradual spin crossover of all iron(II) compounds. By contrast, cyclic voltammetry measurements in solution indicated oxidation-dependent TTF-metal interactions, as well as metal-metal interactions. The reversible TTF-borne events in H4L and [Ni2L] are overlaid with metal-borne events in the case of [Fe2L(py)4], as is corroborated by an analysis of the frontier orbital landscapes and through diagnostic spectral features upon chemical oxidation.
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Affiliation(s)
- Constantin Schreck
- Department of Chemistry, Inorganic Chemistry, University of Bayreuth, 95447 Bayreuth, Germany.
| | - Sophie Schönfeld
- Department of Chemistry, Inorganic Chemistry, University of Bayreuth, 95447 Bayreuth, Germany.
| | - Phil Liebing
- New address: Institute for Inorganic and Analytical Chemistry, Faculty of Chemistry and Earth Sciences, Friedrich-Schiller-University Jena, Germany
| | - Gerald Hörner
- Department of Chemistry, Inorganic Chemistry, University of Bayreuth, 95447 Bayreuth, Germany.
- New address: Institute for Inorganic and Analytical Chemistry, Faculty of Chemistry and Earth Sciences, Friedrich-Schiller-University Jena, Germany
| | - Birgit Weber
- Department of Chemistry, Inorganic Chemistry, University of Bayreuth, 95447 Bayreuth, Germany.
- New address: Institute for Inorganic and Analytical Chemistry, Faculty of Chemistry and Earth Sciences, Friedrich-Schiller-University Jena, Germany
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Dürrmann A, Hörner G, Wagner S, Breuning M, Weber B. Sterically Encumbered Coordination Sites. Iron(II) Complexes of Jäger‐type ligands with a Terphenyl Backbone. Z Anorg Allg Chem 2021. [DOI: 10.1002/zaac.202100196] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Andreas Dürrmann
- Department of Chemistry Inorganic Chemistry University of Bayreuth Universitätsstraße 30, NWI 95440 Bayreuth Germany
| | - Gerald Hörner
- Department of Chemistry Inorganic Chemistry University of Bayreuth Universitätsstraße 30, NWI 95440 Bayreuth Germany
| | - Stefan Wagner
- Department of Chemistry Organic Chemistry University of Bayreuth Universitätsstraße 30, NWII 95440 Bayreuth Germany
| | - Matthias Breuning
- Department of Chemistry Organic Chemistry University of Bayreuth Universitätsstraße 30, NWII 95440 Bayreuth Germany
| | - Birgit Weber
- Department of Chemistry Inorganic Chemistry University of Bayreuth Universitätsstraße 30, NWI 95440 Bayreuth Germany
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Kurz H, Hörner G, Weser O, Li Manni G, Weber B. Quenched Lewis Acidity: Studies on the Medium Dependent Fluorescence of Zinc(II) Complexes. Chemistry 2021; 27:15158-15170. [PMID: 34431572 PMCID: PMC8596774 DOI: 10.1002/chem.202102086] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2021] [Indexed: 01/04/2023]
Abstract
Three new zinc(II) coordination units [Zn(1-3)] based on planar-directing tetradentate Schiff base-like ligands H2 (1-3) were synthesized. Their solid-state structures were investigated by single crystal X-ray diffraction, showing the tendency to overcome the square-planar coordination sphere by axial ligation. Affinity in solution towards axial ligation has been tested by extended spectroscopic studies, both in the absorption and emission mode. The electronic spectrum of the pyridine complex [Zn(1)(py)] has been characterized by MC-PDFT to validate the results of extended TD-DFT studies. Green emission of non-emissive solutions of [Zn(1-3)] in chloroform could be switched on in the presence of potent Lewis-bases. While interpretation in terms of an equilibrium of stacked/non-fluorescent and destacked/fluorescent species is in line with precedents from literature, the sensitivity of [Zn(1-3)] was greatly reduced. Results of a computation-based structure search allow to trace the hidden Lewis acidity of [Zn(1-3)] to a new stacking motif, resulting in a strongly enhanced stability of the dimers.
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Affiliation(s)
- Hannah Kurz
- Inorganic Chemistry IVUniversity of BayreuthUniversitätsstraße 3095447BayreuthGermany
| | - Gerald Hörner
- Inorganic Chemistry IVUniversity of BayreuthUniversitätsstraße 3095447BayreuthGermany
| | - Oskar Weser
- Max Planck Institute for Solid State ResearchHeisenbergstraße 170569StuttgartGermany
| | - Giovanni Li Manni
- Max Planck Institute for Solid State ResearchHeisenbergstraße 170569StuttgartGermany
| | - Birgit Weber
- Inorganic Chemistry IVUniversity of BayreuthUniversitätsstraße 3095447BayreuthGermany
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Kurz H, Hörner G, Weber B. An Iron(II) Spin Crossover Complex with a Maleonitrile Schiff base‐like Ligand and Scan Rate‐dependent Hysteresis above Room Temperature. Z Anorg Allg Chem 2021. [DOI: 10.1002/zaac.202000407] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Hannah Kurz
- Department of Chemistry University of Bayreuth Universitätsstraße 30, NWI 95447 Bayreuth Germany
| | - Gerald Hörner
- Department of Chemistry University of Bayreuth Universitätsstraße 30, NWI 95447 Bayreuth Germany
| | - Birgit Weber
- Department of Chemistry University of Bayreuth Universitätsstraße 30, NWI 95447 Bayreuth Germany
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Liebman KM, Burgess SJ, Gunsaru B, Kelly JX, Li Y, Morrill W, Liebman MC, Peyton DH. Unsymmetrical Bisquinolines with High Potency against P. falciparum Malaria. Molecules 2020; 25:molecules25092251. [PMID: 32397659 PMCID: PMC7249153 DOI: 10.3390/molecules25092251] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2020] [Revised: 05/06/2020] [Accepted: 05/07/2020] [Indexed: 12/11/2022] Open
Abstract
Quinoline-based scaffolds have been the mainstay of antimalarial drugs, including many artemisinin combination therapies (ACTs), over the history of modern drug development. Although much progress has been made in the search for novel antimalarial scaffolds, it may be that quinolines will remain useful, especially if very potent compounds from this class are discovered. We report here the results of a structure-activity relationship (SAR) study assessing potential unsymmetrical bisquinoline antiplasmodial drug candidates using in vitro activity against intact parasites in cell culture. Many unsymmetrical bisquinolines were found to be highly potent against both chloroquine-sensitive and chloroquine-resistant Plasmodium falciparum parasites. Further work to develop such compounds could focus on minimizing toxicities in order to find suitable candidates for clinical evaluation.
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Affiliation(s)
- Katherine M. Liebman
- DesignMedix, Inc., Portland, OR 97201, USA; (K.M.L.); (S.J.B.); (W.M.)
- Department of Chemistry, Portland State University, Portland, OR 97207, USA; (B.G.); (J.X.K.); (M.C.L.)
| | - Steven J. Burgess
- DesignMedix, Inc., Portland, OR 97201, USA; (K.M.L.); (S.J.B.); (W.M.)
| | - Bornface Gunsaru
- Department of Chemistry, Portland State University, Portland, OR 97207, USA; (B.G.); (J.X.K.); (M.C.L.)
| | - Jane X. Kelly
- Department of Chemistry, Portland State University, Portland, OR 97207, USA; (B.G.); (J.X.K.); (M.C.L.)
- Portland VA Research Foundation, Portland, OR 97239, USA;
| | - Yuexin Li
- Portland VA Research Foundation, Portland, OR 97239, USA;
| | - Westin Morrill
- DesignMedix, Inc., Portland, OR 97201, USA; (K.M.L.); (S.J.B.); (W.M.)
| | - Michael C. Liebman
- Department of Chemistry, Portland State University, Portland, OR 97207, USA; (B.G.); (J.X.K.); (M.C.L.)
| | - David H. Peyton
- DesignMedix, Inc., Portland, OR 97201, USA; (K.M.L.); (S.J.B.); (W.M.)
- Department of Chemistry, Portland State University, Portland, OR 97207, USA; (B.G.); (J.X.K.); (M.C.L.)
- Correspondence: ; Tel.: +1-503-805-1291
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Kurz H, Lochenie C, Wagner KG, Schneider S, Karg M, Weber B. Synthesis and Optical Properties of Phenanthroline-Derived Schiff Base-Like Dinuclear RuII-NiIIComplexes. Chemistry 2018; 24:5100-5111. [DOI: 10.1002/chem.201704632] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2017] [Indexed: 11/08/2022]
Affiliation(s)
- Hannah Kurz
- Anorganische Chemie II; Universität Bayreuth; Universitätsstr. 30, NW I 95440 Bayreuth Germany
| | - Charles Lochenie
- Anorganische Chemie II; Universität Bayreuth; Universitätsstr. 30, NW I 95440 Bayreuth Germany
- Laboratoire de Chimie et des Biomatériaux Supramoléculaires, Institut de Sciences et d'Ingénierie Supramoléculaires; Université de Strasbourg; 67083 Strasbourg Cedex France
| | - Kristina G. Wagner
- Physikalische Chemie I; Heinrich-Heine-Universität Düsseldorf; 40204 Düsseldorf Germany
| | - Sandra Schneider
- Anorganische Chemie II; Universität Bayreuth; Universitätsstr. 30, NW I 95440 Bayreuth Germany
| | - Matthias Karg
- Physikalische Chemie I; Heinrich-Heine-Universität Düsseldorf; 40204 Düsseldorf Germany
| | - Birgit Weber
- Anorganische Chemie II; Universität Bayreuth; Universitätsstr. 30, NW I 95440 Bayreuth Germany
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Dankhoff K, Weber B. Novel Cu(ii) complexes with NNO-Schiff base-like ligands – structures and magnetic properties. CrystEngComm 2018. [DOI: 10.1039/c7ce02007d] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
The X-ray structures and magnetic properties of 22 copper(ii) complexes, derived from six new tridentate Schiff base-like ligands and various conterions, are discussed.
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Affiliation(s)
- Katja Dankhoff
- Department of Chemistry
- University of Bayreuth
- 95440 Bayreuth
- Germany
| | - Birgit Weber
- Department of Chemistry
- University of Bayreuth
- 95440 Bayreuth
- Germany
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9
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Lochenie C, Heinz J, Milius W, Weber B. Iron(ii) spin crossover complexes with diaminonaphthalene-based Schiff base-like ligands: mononuclear complexes. Dalton Trans 2015; 44:18065-77. [DOI: 10.1039/c5dt03048j] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Iron(ii) spin crossover (SCO) complexes with diaminonaphthalene derived Schiff base-like ligand were synthesised, and their magnetic and structural properties analysed.
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Affiliation(s)
| | - Julia Heinz
- Inorganic Chemistry II
- Universität Bayreuth
- 95440 Bayreuth
- Germany
| | - Wolfgang Milius
- Inorganic Chemistry I
- Universität Bayreuth
- 95440 Bayreuth
- Germany
| | - Birgit Weber
- Inorganic Chemistry II
- Universität Bayreuth
- 95440 Bayreuth
- Germany
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10
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Schlamp S, Lochenie C, Bauer T, Kempe R, Weber B. Iron(II) Spin‐Crossover Complexes with Schiff Base Like Ligands and
N
‐Alkylimidazoles. Eur J Inorg Chem 2014. [DOI: 10.1002/ejic.201403021] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Stephan Schlamp
- Lehrstuhl für Anorganische Chemie II, Universität Bayreuth, Universitätsstraße 30, NW 1, 95440 Bayreuth, Germany, http://www.ac2‐weber.uni‐bayreuth.de
| | - Charles Lochenie
- Lehrstuhl für Anorganische Chemie II, Universität Bayreuth, Universitätsstraße 30, NW 1, 95440 Bayreuth, Germany, http://www.ac2‐weber.uni‐bayreuth.de
| | - Tobias Bauer
- Lehrstuhl für Anorganische Chemie II, Universität Bayreuth, Universitätsstraße 30, NW 1, 95440 Bayreuth, Germany, http://www.ac2‐weber.uni‐bayreuth.de
| | - Rhett Kempe
- Lehrstuhl für Anorganische Chemie II, Universität Bayreuth, Universitätsstraße 30, NW 1, 95440 Bayreuth, Germany, http://www.ac2‐weber.uni‐bayreuth.de
| | - Birgit Weber
- Lehrstuhl für Anorganische Chemie II, Universität Bayreuth, Universitätsstraße 30, NW 1, 95440 Bayreuth, Germany, http://www.ac2‐weber.uni‐bayreuth.de
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11
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Schlamp S, Thoma P, Weber B. Influence of the Alkyl Chain Length on the Self‐Assembly of Amphiphilic Iron Complexes: An Analysis of X‐ray Structures. Chemistry 2014; 20:6462-73. [DOI: 10.1002/chem.201304653] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2013] [Revised: 02/04/2014] [Indexed: 11/08/2022]
Affiliation(s)
- Stephan Schlamp
- Inorganic Chemistry II, Universität Bayreuth, Universitätsstraße 30, NW 1, 95440 Bayreuth (Germany)
| | - Peter Thoma
- Inorganic Chemistry II, Universität Bayreuth, Universitätsstraße 30, NW 1, 95440 Bayreuth (Germany)
| | - Birgit Weber
- Inorganic Chemistry II, Universität Bayreuth, Universitätsstraße 30, NW 1, 95440 Bayreuth (Germany)
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12
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Fuchs MA, Altesleben C, Staudt SC, Walter O, Zevaco TA, Dinjus E. New air-stable zinc complexes formed from cyanoacrylate- and methylenemalonate-based [N2O2]-ligands and their role as catalysts in epoxide–CO2 coupling. Catal Sci Technol 2014. [DOI: 10.1039/c4cy00125g] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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13
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Fuchs MA, Altesleben C, Zevaco TA, Dinjus E. An Efficient Homogeneous Chloro-Aluminum-[N2O2] Catalyst for the Coupling of Epoxides with Carbon Dioxide. Eur J Inorg Chem 2013. [DOI: 10.1002/ejic.201300634] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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14
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Schlamp S, Thoma P, Bauer T, Kempe R, Weber B. A New Iron(II) Complex with Strongly Saddle Shaped Schiff Base like Ligand. Z Anorg Allg Chem 2013. [DOI: 10.1002/zaac.201300176] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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15
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Schlamp S, Thoma P, Weber B. New Octahedral, Head-Tail Iron(II) Complexes with Spin Crossover Properties. Eur J Inorg Chem 2011. [DOI: 10.1002/ejic.201101096] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Marjani AP, Khalafy J. A short and efficient method for the synthesis of pyrimido[1,2-a]quinolines. Chem Heterocycl Compd (N Y) 2011. [DOI: 10.1007/s10593-011-0725-0] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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19
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20
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Jäger EG, Seidel D, Schade W. Nebenwege der Makrocyclensynthese: Template-Reaktion von Metallionen mit N-(2-Aminophenyl)azomethinen von β-Ketoaldehyden. ACTA ACUST UNITED AC 2010. [DOI: 10.1002/zfch.19830230118] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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21
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Weber B, Obel J, Henner-Vásquez D, Bauer W. Two New Iron(II) Spin-Crossover Complexes with N4O2Coordination Sphere and Spin Transition around Room Temperature. Eur J Inorg Chem 2009. [DOI: 10.1002/ejic.200900846] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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22
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Mosti L, Menozzi G, Schenone P. Reaction of 2-dimethylaminomethylene-1,3-diones with dinucleophiles. III. Synthesis of 5-acylpyrimidines and 7,8-dihydroquinazolin-5(6H
)-ones. J Heterocycl Chem 2009. [DOI: 10.1002/jhet.5570200328] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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23
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Weber B, Jäger E. Structure and Magnetic Properties of Iron(II/III) Complexes with N
2
O
2
2–
Coordinating Schiff Base Like Ligands. Eur J Inorg Chem 2009. [DOI: 10.1002/ejic.200800891] [Citation(s) in RCA: 78] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Birgit Weber
- Department Chemie und Biochemie, Ludwig‐Maximilians‐Universität München, Butenandtstr. 5–13 (Haus F), 81377 München, Germany, Fax: +49‐89‐2180‐77407
| | - Ernst‐G. Jäger
- Institut für Anorganische und Analytische Chemie, Universität Jena, August‐Bebel‐Str. 2, 07743 Jena, Germany
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25
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Errera G. Untersuchungen über gemischte Methenylverbindungen. I. Einwirkung von Aethoxymethylenacetessigester auf Acetondicarbonsäureester. ACTA ACUST UNITED AC 2006. [DOI: 10.1002/cber.18990320334] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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26
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Alder K, Rickert HF. Zur Kenntnis der Dien-Synthese, XIV. Mitteil.: Über die Darstellung von alicyclischen Malon-, Cyanessig- und Acetessig-säureestern. ACTA ACUST UNITED AC 2006. [DOI: 10.1002/cber.19390721119] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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27
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Affiliation(s)
| | - H. Rosewicz
- Institut für Organische Chemie der Technischen Hochschule Hannover
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28
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Kögl F, Lang A. Über den Mechanismus der Fichterschen Synthese von Dialkyl-dioxy-chinonen. ACTA ACUST UNITED AC 2006. [DOI: 10.1002/cber.19260590510] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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29
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Scheibler H, Ziegner H. Über die Synthese von Vinylidenglykol-diäthyläther (Keten-acetal), ein Beitrag zur Aufklärung des Reaktionsverlaufes der Acetessigester-Synthese. II. Mitteilung: Über die Metallverbindungen der Enolformen von Carbonylverbindungen und ihre Verwendung zu Sy. ACTA ACUST UNITED AC 2006. [DOI: 10.1002/cber.19220550330] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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30
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Bluhm ME, Folli C, Pufky D, Kröger M, Walter O, Döring M. 3-Aminoiminoacrylate, 3-Aminoacrylate, and 3-Amidoiminomalonate Complexes as Catalysts for the Dimerization of Olefins. Organometallics 2005. [DOI: 10.1021/om049075s] [Citation(s) in RCA: 35] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Martin E. Bluhm
- Forschungszentrum Karlsruhe, Institute for Technical Chemistry (ITC-CPV), P.O. Box 3640, 76021 Karlsruhe, Germany
| | - Cristina Folli
- Forschungszentrum Karlsruhe, Institute for Technical Chemistry (ITC-CPV), P.O. Box 3640, 76021 Karlsruhe, Germany
| | - Daniela Pufky
- Forschungszentrum Karlsruhe, Institute for Technical Chemistry (ITC-CPV), P.O. Box 3640, 76021 Karlsruhe, Germany
| | - Mario Kröger
- Forschungszentrum Karlsruhe, Institute for Technical Chemistry (ITC-CPV), P.O. Box 3640, 76021 Karlsruhe, Germany
| | - Olaf Walter
- Forschungszentrum Karlsruhe, Institute for Technical Chemistry (ITC-CPV), P.O. Box 3640, 76021 Karlsruhe, Germany
| | - Manfred Döring
- Forschungszentrum Karlsruhe, Institute for Technical Chemistry (ITC-CPV), P.O. Box 3640, 76021 Karlsruhe, Germany
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31
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Weber B, Käpplinger I, Görls H, Jäger EG. The Relationship between the Structure and Magnetic Properties of Bioinspired Iron(ii/iii) Complexes with Schiff-Base-Like Chelate Ligands, Part I: Complexes with Dianionic [N4] Macrocycles. Eur J Inorg Chem 2005. [DOI: 10.1002/ejic.200400759] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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32
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Dede R, Langer P. Synthesis of functionalized acetophenones by [3+3] cyclizations of 1,3-bis-silyl enol ethers with 2-acetyl-3-silyloxyalk-2-en-1-ones. Tetrahedron Lett 2004. [DOI: 10.1016/j.tetlet.2004.10.104] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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33
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Mohr E. 70. Welche Substanzen enthalten eine leicht lösbare, einfache Kohlenstoff-Stickstoffbindung? ACTA ACUST UNITED AC 2004. [DOI: 10.1002/prac.19070750135] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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34
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Flückiger JR, Schläpfer CW. Schiff-Basen aus 1,3-Dicarbonylverbindungen und Triaminen und ihre Fe (III)-, Co (III)-, Ni(II)- und Cu(II)-Komplexe. Helv Chim Acta 2004. [DOI: 10.1002/hlca.19780610523] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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35
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Gottschaldt M, Wegner R, Görls H, Klüfers P, Jäger EG, Klemm D. Binuclear copper(II) complexes of 5-N-(β-ketoen)amino-5-deoxy-1,2-O-isopropylidene-α-d-glucofuranoses: synthesis, structure, and catecholoxidase activity. Carbohydr Res 2004; 339:1941-52. [PMID: 15261587 DOI: 10.1016/j.carres.2004.05.018] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2004] [Revised: 05/10/2004] [Accepted: 05/17/2004] [Indexed: 10/26/2022]
Abstract
The synthesis of 5-amino-5-deoxy-1,2-O-isopropylidene-alpha-D-glucofuranose (8) was carried out via 5-azido-5-deoxy-1,2:3,4-O-diisopropylidene-alpha-D-glucofuranose (6), its reduction with Raney-Nickel and deprotection. 5-N-(beta-Ketoen)amino-5-deoxy-1,2-O-isopropylidene-alpha-D-glucofuranoses (8a-f) were synthesized from 5-amino-5-deoxy-1,2-O-isopropylidene-alpha-D-glucofuranose and beta-ketoenolethers leading to ligands with symmetrically substituted double bonds (8a, 8b) and e/z isomeric mixtures with unsymmetrical substitution (8c-f). Reaction of the ligands with Cu(II) ions leads to binuclear complexes of the general formula Cu2L2. In contrast to copper(II) complexes which are not derived from amino carbohydrates the metal centers in the compounds saturate their coordination sphere by complexation of additional solvent molecules, interaction with neighboring complex molecules, or free hydroxyl groups of the own ligand. Residues of the ketoen moiety, R1 and R2, also influence the electronic properties of the metal centers. The combination of factors leads to different catalytic properties of the complexes in catecholoxidase-like reactions.
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Affiliation(s)
- Michael Gottschaldt
- Friedrich Schiller University Jena, Institute of Organic and Macromolecular Chemistry, Humboldtstrasse 10, 07743 Jena, Germany.
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Stereoselective routes to substituted β-amino carbonyl compounds via heterodiene [4π+2π] cycloadditions of auxiliary-based C2 symmetric ketene acetals. Tetrahedron 2003. [DOI: 10.1016/s0040-4020(02)01523-5] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Ray CA, Wallace TW, Ward RA. Stereoselective routes to substituted β-amino carbonyl compounds via heterodiene cycloadditions of an auxiliary-based C2-symmetric ketene acetal. Tetrahedron Lett 2000. [DOI: 10.1016/s0040-4039(00)00407-x] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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New binucleating Schiff base NiII and CuII complexes—synthesis, spectral properties and crystal structure. Polyhedron 1998. [DOI: 10.1016/s0277-5387(97)00301-x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Baraldi I, Ghelli S, Krasnaya ZA, Momicchioli F, Tatikolov AS, Vanossi D, Ponterini G. The stable and photochemical isomers of some merocyanines: a 1H NMR and theoretical CS INDO study of the structures and electronic spectra. J Photochem Photobiol A Chem 1997. [DOI: 10.1016/s1010-6030(96)04539-x] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Syntheses, characterization, redox behavior and Lewis acidity of chiral nickel(II) and copper(II) Schiff base complexes. Inorganica Chim Acta 1997. [DOI: 10.1016/s0020-1693(96)05377-7] [Citation(s) in RCA: 40] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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Wiesemann F, Krebs B, G�rls H, J�ger EG. Molek�lstruktur und intermolekulare Koordination von acylsubstituierten Chelatkomplexen Schiffscher Basen. Z Anorg Allg Chem 1995. [DOI: 10.1002/zaac.19956211110] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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Saalfrank RW, Danion D, Hampel F, Hassa J, Struck O, Toupet L. Coordination Polymers, VI. Neutral 1D-Coordination Polymers from Ethyl (Aminomethylene)cyanoacetate Derivatives and Copper(II) Acetate by Spontaneous Self-Organization. ACTA ACUST UNITED AC 1994. [DOI: 10.1002/cber.19941270717] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Grohe K. Zur Bedeutung des Cycloaracylierungsverfahrens f�r die Synthese moderner Fluorchinolone. ACTA ACUST UNITED AC 1993. [DOI: 10.1002/prac.19933350502] [Citation(s) in RCA: 11] [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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Fuganti C, Lanati S, Servi S, Tagliani A, Bedeschi A, Franceschi G. Microbial generation of (2R,3S)- and (2S,3S)-ethyl 2-benzamidomethyl-3-hydroxybutyrate, a key intermediate in the synthesis of (3S,1′R)-3-(1′-hydroxyethyl)azetidin-2-one. ACTA ACUST UNITED AC 1993. [DOI: 10.1039/p19930002247] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Selleri S, Bruni F, Costanzo A, Guerrini G, Malmberg Aiello P, Iavarone G, Martini C. Synthesis and preliminary evaluation of pyrazolo[1,5-a]pyrido[3,4-e]pyrimidin-6(7H)-ones and related compounds, as benzodiazepine receptor ligands and anticonvulsant agents. Eur J Med Chem 1992. [DOI: 10.1016/0223-5234(92)90033-w] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Eggert K, Heber D, Ravens U. Compounds with positive inotropic activity, III: Synthesis of 4-aminoquinoline derivatives as potential positive inotropic agents. Arch Pharm (Weinheim) 1990; 323:611-8. [PMID: 2288483 DOI: 10.1002/ardp.19903230911] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Anilinoacrylic acid derivatives 2-4 are the key intermediates from which 1-alkyl substituted 4-aminoquinoline 10-15 as well as 4-alkylaminoquinoline derivatives 16-23 are synthesized and examined for positive inotropic activity on isolated left atria and papillary muscles from guinea-pig. Structure activity relationships indicate that the effect depends on the alkyl side chain of the target compounds.
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Affiliation(s)
- K Eggert
- Department of Pharmaceutical Chemistry, University of Kiel
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Kwiatkowski M, Kwiatkowski E, Olechnowicz A, Ho DM, Deutsch E. New nickel(II) and palladium(II) complexes with unsymmetrical quadridentate Schiff bases derived from 8-amino-4-methyl-5-azaoct-3-en-2-one. Crystal and molecular structure of [4,10-dimethyl-3-(nitroso-χN)-5,9-(diaza-χ2N)-trideca-3,10-diene-2,12-(dionato-χO)(2–)]nickel(II). ACTA ACUST UNITED AC 1990. [DOI: 10.1039/dt9900002497] [Citation(s) in RCA: 39] [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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