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  • 1
    Electronic Resource
    Electronic Resource
    Selective monomer/dimer formation in a many-membered crown ether lactone synthesis (1979)
    s.l. : American Chemical Society
    The @journal of organic chemistry 44 (1979), S. 884-885 
    Details
    ISSN: 1520-6904
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/jo01319a060
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  • 2
    Electronic Resource
    Electronic Resource
    Ligandstruktur und Komplexierung, XLV. Neue Kronenetherester (1979)
    Weinheim : Wiley-Blackwell
    Liebigs Annalen 1979 (1979), S. 858-865 
    Details
    ISSN: 0170-2041
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Ligand Structure and Complexation, XLV. - New Crown Ether EstersThe synthesis and properties of the new cyclic and non-cyclic crown ether type ligands 1-15 are described. They contain carboxylic and squaric ester units. Their ligand character has been proven by isolating crystalline complexes with sodium and potassium salts. With KSCN, 15 does not yield the expected ester complex (18), but the complex 19 of the diphenol 17.
    Notes: Synthese und Eigenschaften der neuen cyclischen und offenkettigen Neutralliganden 1-15 des Kronenethertyps, die Carbonsäure-oder Quadratsäureester-Gruppen enthalten, werden beschrieben. Die Ligandeigenschaften wurden durch Isolierung kristalliner Komplexe mit Natrium- und Kaliumsalzen nachgewiesen. 15 liefert mit KSCN nicht den erwarteten Komplex 18 des Esters, sondern den Komplex 19 des Diphenols 17.
    Additional Material: 2 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jlac.197919790614
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  • 3
    Electronic Resource
    Electronic Resource
    Kronenether mit verschiedenen pharmakophoren Gruppen (1979)
    Weinheim : Wiley-Blackwell
    Liebigs Annalen 1979 (1979), S. 1102-1111 
    Details
    ISSN: 0170-2041
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Crown Ethers With Different Pharmacophoric GroupsThe preparation of drug crown ethers with different ion selectivities is described. Apart from crown ether amines with acetylsalicyl-, p-aminobenzoyl-, trimethoxycinnamoyl-, phenothiazine-and other substituents several barbiturates as well as papaverine, eupaverine, isoproterenol, and orciprenaline derivatives with intramolecular crown ether units have been synthesized. A crystalline complex of ligand 22 with Ca(SCN)2 and containing 1 mol H2O has been obtained.
    Notes: Die Darstellung von Arzneimittel-Kronenethern mit unterschiedlicher Ionenselektivität wird be-schrieben. Außer Kronenetheraminen mit Acetylsalicyl-, p-Aminobenzoyl-, Trimethoxycinnamoyl-, Phenothiazinylresten und anderen Substituenten wurden verschiedene Barbiturate sowie Papaverin-, Eupaverin-, Isoproterenol- und Orciprenalin-Abkömmlinge mit intramolekularen Kronenethereinheiten synthetisiert. Von dem Liganden 22 wurde ein kristalliner Komplex mit Ca(SCN)2 erhalten, der 1 mol H2O enthält.
    Additional Material: 1 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jlac.197919790804
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  • 4
    Electronic Resource
    Electronic Resource
    Notiz über Oligoethylenglykolether des Morphins (1979)
    Weinheim : Wiley-Blackwell
    Liebigs Annalen 1979 (1979), S. 2118-2120 
    Details
    ISSN: 0170-2041
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Note on Oligo Ethylene Glycol Ethers of MorphineThe open chain oligo ethylene glycol ethers 4, 5 with two morphine terminal groups have been synthesized and investigated regarding their complex formation. With Ca(SCN)2 · 4 H2O complexes are formed, whose stoichiometry is unclear as yet. The analogous reaction of morphine with 2,6-bis(bromomethyl)pyridine (6) led to the by-product 8 and to small amounts of the diether 7.
    Notes: Die offenkettigen Oligoethylenglykolether 4, 5 mit zwei Morphin-Endgruppen wurden synthetisiert und hinsichtlich ihrer Komplexbildung untersucht. Mit Ca(SCN)2 · 4 H2O werden Komplexe gebildet, deren Stöchiometrie unklar ist. Die analoge Umsetzung von Morphin mit 2,6-Bis(brommethyl)pyridin (6) führte zum Zwischenprodukt 8 und zu geringen Mengen des Diethers 7.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jlac.197919791222
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  • 5
    Electronic Resource
    Electronic Resource
    Ligandstruktur und Komplexierung, XXXI. Kronenether und Cryptanden mit Urethan-Struktureinheiten (1978)
    Weinheim : Wiley-Blackwell
    Liebigs Annalen 1978 (1978), S. 1586-1591 
    Details
    ISSN: 0075-4617
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Ligand Structure and Complexation, XXXI.  -  Crown Ethers and Cryptands with Urethane Structural UnitsHerrn Prof. Dr. H. Plieninger zum 65. Geburtstag gewidmet.New crown ether and cryptand systems have been synthesized which contain two urethane units as characteristic structural elements. Cyclizations at high dilution lead to higher yields than in more concentrated solution.  -  1H- and 13C-NMR measurements provide an insight into the conformational flexibility and the cation complexation processes of the ring systems. The cryptand 10 yields a crystalline 1:1 complex with lithium perchlorate.
    Notes: Neue Kronenether- und Cryptandsysteme, die als charakteristisches Strukturelement jeweils zwei Urethaneinheiten enthalten, wurden synthetisiert. Die Cyclisierung in verdünnter Lösung führt zu höheren Ausbeuten als ohne Verdünnung.  -  1H- und 13C-NMR-Untersuchungen geben Aufschluß über die konformative Beweglichkeit und die Kationkomplexierung der Ringsysteme. Der Cryptand 10 bildet einen kristallinen [1:1]-Komplex mit Lithiumperchlorat.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jlac.197819781005
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  • 6
    Electronic Resource
    Electronic Resource
    Papaverin-KronenetherDem Fonds der Chemischen Industrie danken wir für die Unterstützung dieser Arbeit. (1976)
    Weinheim : Wiley-Blackwell
    Zeitschrift für die chemische Industrie 88 (1976), S. 722-723 
    Details
    ISSN: 0044-8249
    Keywords: Chemistry ; General Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/ange.19760882111
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  • 7
    Electronic Resource
    Electronic Resource
    Ligandstruktur und Komplexierung, LII. Notiz über Kronenether mit Triveratrylen-Gerüst (1979)
    Weinheim : Wiley-Blackwell
    Liebigs Annalen 1979 (1979), S. 2121-2123 
    Details
    ISSN: 0170-2041
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Ligand Structure and Complexation, LII.  -  Note on Crown Ethers with Triveratrylene SkeletonThe syntheses of the threefold crown ethers 1a, b involving the cyclotriveratrylene skeleton and the preparation of crystalline 1:3 complexes with NaSCN and KSCN are described.
    Notes: Die Synthese der dreifachen Kronenether 1a, b mit Cyclotriveratrylen-Gerüst und deren kristalliner [1:3]-Komplexe mit NaSCN bzw. KSCN wird beschrieben.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jlac.197919791223
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  • 8
    Electronic Resource
    Electronic Resource
    Papaverine Crown EthersThis work was supported by the Fonds der Chemischen Industrie. (1976)
    Weinheim : Wiley-Blackwell
    Angewandte Chemie International Edition in English 15 (1976), S. 685-686 
    Details
    ISSN: 0570-0833
    Keywords: Chemistry ; General Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/anie.197606851
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