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  • 1
    Electronic Resource
    Electronic Resource
    Die Komplexchemie niederer Schwefeloxide, II. Schwefelmonoxid und Dischwefeldioxid als Komplexliganden (1975)
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 108 (1975), S. 3008-3013 
    Details
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: The Complex Chemistry of Lower Sulfur Oxides, II. Sulfur Monoxide and Disulfur Dioxide as Complex LigandsThe sulfur oxides SO and S2O2, unstable under normal conditions, can act as complex ligands in [{C6H5)2PCH2CH2P(C6H5)2}2Ir(SO)2]Cl. The synthesis is achieved by oxidation of cis-[{(C6H5)2PCH2CH2P(C6H5)2}2Ir(S2)]Cl with sodium periodate. The complex forms two modifications, recognizable from the number of the v(SO) frequences in the i.r. spectrum. One of the modifications, containing disulfur dioxide as a ligand, was investigated by an X-ray structure analysis. trans Position of two single SO groups is supposed in the other modification. From this compound the SO molecules can be eliminated by (C6H5)3P as (C6H5)3P=O and (C6H5)3P=S with formation of [{(C6H5)2PCH2CH2P(C6H5)2}2Ir]Cl.
    Notes: Die unter Normalbedingungen instabilen Schwefeloxide SO und S2O2 können in [{C6H5)2PCH2CH2P(C6H5)2}2Ir(SO)2]Cl als Komplexliganden auftreten. Die Synthese erfolgt durch Oxidation von cis-[{(C6H5)2PCH2CH2P(C6H5)2}2Ir(S2)]Cl mit Natriumperjodat. Der Komplex bildet zwei Modifikationen, erkennbar an der Zahl der v(SO)-Schwingungen im IR-Spektrum. Von einer Modifikation, die das Dischwefeldioxid als Liganden enthält, wurde eine Röntgenstrukturanalyse durchgeführt. In der anderen Modifikation wird trans-Stellung zweier SO-Gruppen vermutet. Aus dieser Verbindung lassen sich die SO-Moleküle mittels (C6H5)3P als (C6H5)3P=O und (C6H5)3P=S unter Bildung von [{(C6H5)2PCH2CH2P(C6H5)2}2Ir]Cl entfernen.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cber.19751080921
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  • 2
    Electronic Resource
    Electronic Resource
    Strukturbestimmung eines 1,4-poly(1,3-pentadien)s durch 13C-NMR-spektroskopieHerrn Prof. Dr. Dr. h. c. F. Patat zu seinem 70. Geburtstag mit unseren allerbesten Wünschen gewidmet (1976)
    New York : Wiley-Blackwell
    Die Makromolekulare Chemie 177 (1976), S. 2021-2030 
    Details
    ISSN: 0025-116X
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Description / Table of Contents: The polymerisation of trans-1,3-pentadiene was carried out by butyllithium as an initiator in heptane at 80°C. The structure of the polymer backbone chain was determined by 13C-NMR spectroscopy at 90,51 MHz.85% 1,4 und 15% 1,2 enchainment were found. The 1,4 enchainment consists of 70% trans and 30% cis configuration. 50% deviation was detected from head-to-tail polymerisation. The probability of a meso diad for head-to-tail polymerisation is m=0,5, whereas m=0,66 was observed for head-to-head polymerisation.
    Notes: Die Polymerisation des trans-1,3-Pentadiens wurde mit Butyllithium als Initiator bei 80°C in Heptan durchgeführt. Die Struktur der Polymerkette wurde durch 13C-NMR-Spektroskopie bei 90,51 MHz bestimmt.85% 1,4- und 15% 1,2-Verknüpfung wurden bestimmt. Die 1,4-Verknüpfung setzt sich aus 70% trans- und 30% cis-Verknüpfung zusammen. 50% Abweichung von der „Kopf-Schwanz-Verknüpfung“ wurden gefunden. Die Wahrscheinlichkeit einer meso-Diade beträgt in der „Kopf-Schwanz-Verknüpfung“ m=0,5, während sie für die „Kopf-Kopf-Verknüpfung“ m=0,66 beträgt.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/macp.1976.021770710
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  • 3
    Electronic Resource
    Electronic Resource
    Zur strukturbestimmung des 1,4-poly(2,3-dimethyl-1,3-butadien)s durch 13C NMR-spektroskopieHerrn Prof. Dr. H. Kämmerer zu seinem 65. Geburtstag mit unseren besten Wünschen gewidmet (1977)
    New York : Wiley-Blackwell
    Die Makromolekulare Chemie 178 (1977), S. 557-563 
    Details
    ISSN: 0025-116X
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Notes: cis and trans Configuration of monomeric units in 1,4-poly(2,3-dimethyl-1,3-butadiene), poly(1,2-dimethyl-1-butenylene), has been determined by 13C NMR spectroscopy.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/macp.1977.021780225
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  • 4
    Electronic Resource
    Electronic Resource
    Synthese und Strukturuntersuchung des Poly(1-hydroxytetramethylen)s (1977)
    New York : Wiley-Blackwell
    Die Makromolekulare Chemie 178 (1977), S. 2837-2842 
    Details
    ISSN: 0025-116X
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Notes: Poly(1-hydroxytetramethylene) was prepared via hydroboration of cis-1,4-poly(butadiene). The structure of the polymer chain generated by a random hydroxylation of the carbon double bonds of the butadien units was determined by 13C NMR spectroscopy.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/macp.1977.021781007
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  • 5
    Electronic Resource
    Electronic Resource
    Determination of configuration and conformation of polymer segments by low-molecular-weight diastereomeric model compounds (1978)
    New York : Wiley-Blackwell
    Die Makromolekulare Chemie 179 (1978), S. 823-827 
    Details
    ISSN: 0025-116X
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/macp.1978.021790325
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  • 6
    Electronic Resource
    Electronic Resource
    Investigation of polymers in the mass spectrometer, 7.Part 6, cf.25. Pyrolysis-gas chromatography-mass spectrometry of low molecular and high polymeric sulfanilamidesDedicated to Prof. H. Mark on the occasion of his 80th birthday (1975)
    New York : Wiley-Blackwell
    Die Makromolekulare Chemie 1 (1975), S. 297-315 
    Details
    ISSN: 0025-116X
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Description / Table of Contents: Eine Reihe niedermolekularer, monomerer und polymerer Sulfanilamidderivate, die als potentiell selektive Cytostatika diskutiert werden, wurden durch kombinierte Pyrolyse-Gaschromatographie (GC)-Massenspektrometrie (MS) untersucht. Zur Ermittlung der thermischen Abbaumechanismen wurden einige der polymeren Sulfonamide auch durch direkte Pyrolyse in der Ionenquelle des Massenspektrometers abgebaut. Das Fragmentierungsverhalten der thermischen Abbauprodukte sowie der monomeren Sulfanilamide und geeigneter niedermolekularer Modellverbindungen wurde durch nieder- und hochauflösende Elektronenstoß-Massenspektrometrie und durch Felddesorptionsionisation untersucht. Es konnten strukturspezifische Bruckstücke nachgewiesen werden, die eine Differenzierung der niedermolekularen und polymeren Sulfonamide ermöglichen.Die Anwendbarkeit der Pyrolyse-GC-MS und Pyrolyse-Massenfragmentographie zum Nachweis von niedermolekularen und polymeren Sulfonamiden in vivo wird in ersten Tests geprüft.
    Notes: A number of low molecular, monomeric and polymeric sulfanilamide derivatives, which have found interest as possibly selective antitumour agents, were investigated by pyrolysis-gas chromatography (GC)-mass spectrometry (MS). Thermal degradation mechanisms were studied using also direct polymer pyrolysis in the ion source of the mass spectrometer. Thermal degradation products as well as low molecular weight sulfanilamides and related model compounds were characterized in their fragmentation behaviour by low and high resolution electron impact and field desorption mass spectrometry. Thermal fragments of structural significance were found, and a differentiation of the low and high molecular sulfonamides could be obtained by specific fragments.First in vivo investigations have been done to prove the applicability of pyrolysis-GC-MS and pyrolysis-mass fragmentography as method for an in vivo assay of low and high molecular sulfanilamides.
    Additional Material: 9 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/macp.1975.020011975121
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  • 7
    Electronic Resource
    Electronic Resource
    Pharmacologically active polymers, 10.Part 9: H. Ringsdorf, H. Ritter, H. Rolly, Makromol. Chem. 177, 741 (1976). Preparation and polymerization of 1-O-(4-methacryloylaminophenyl)-β-D-glucopyranoside (1976)
    New York : Wiley-Blackwell
    Die Makromolekulare Chemie 177 (1976), S. 1631-1635 
    Details
    ISSN: 0025-116X
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Additional Material: 1 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/macp.1976.021770532
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  • 8
    Electronic Resource
    Electronic Resource
    Pharmacologically active polymers, 11Part 10: L. A. Carpino, H. Ringsdorf, H. Ritter, Makromol. Chem. 177, 1631 (1976).. Polymeric sulfonamides as potential antibacterials and carriers for antitumor agentsDedicated to Prof. Dr. W. Kern on the occasion of his 70th birthday (1976)
    New York : Wiley-Blackwell
    Die Makromolekulare Chemie 177 (1976), S. 1791-1813 
    Details
    ISSN: 0025-116X
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Description / Table of Contents: Eine Reihe von Acryl-und Methacrylderivaten verschiedener Sulfanilamide (1a - I) wurde hergestellt und polymerisiert. Die Fixierung der Sulfonamide erfolgte direkt, als Acryl-und Methacrylamid, und mit Hilfe von Spacergruppen, zur Aktivierung der enzymatischen oder hydrolytischen Abspaltung des Pharmakons. Es wurden Sulfonamide mit verschiedenen pKs-Werten verwendet und die pH-abhängige Löslichkeit der entsprechenden Polymeren untersucht.Die monomeren Acryloyl- und Methacryloylsulfonamide wurden radikalisch mit AIBN homopolymerisiert. Zur Untersuchung der Körperverteilung wurde 14C hauptkettenmar- kiertes Polysulfadiazinacrylamid (2é) dargestellt. Durch Copolymerisation mit 2-Methyl-sulfinyläthylmethacrylat (5a) wurden wasserlösliche Polymere mit geringerer Toxizitäterhalten. Eventuell biologisch abbaubare Polymere mit Sulfonamidgruppen in der Hauptkette wurden durch anionische Polymerisation von Acryloyl- und Methacryloylsulfanilamid dargestellt.Die neuen Monomeren und Polymeren wurden durch Elementaranalyse, IR- und NMR-Spektroskopie, Pyrolyse-Massenspektrometrie und hydrolytischen Abbau charakterisiert.
    Notes: A number of acryl and methacryl derivatives of different sulfanilamides (1a - I) were prepared and polymerized. The fixation of the sulfonamide to the polymerizable group was carried out directly, using the acryl- and methacrylamides, and by means of spacer groups, to favour the enzymatic or hydrolytic release of the drug moiety. Selected sulfonamide types of different pKA values were used, and the pH-dependant solubility of the corresponding polymers was studied.The monomeric acryloyl and methacryloyl sulfonamides were homopolymerized radically by AIBN. For distribution studies polysulfadiazineacrylamide, 14C-labelled in the main chain (2e'), was synthesized. Copolymerization with 2-methylsulfinylethyl methacrylate (5a) yielded water soluble polymers of lower toxicity. Eventually biodegradable polymers containing sulfonamide units in the backbone were obtained by anionic polymerization of acryloyl and methacryloyl sulfanilamide.The new monomers and polymers were characterized by elemental analysis, IR- and NMR-spectroscopy, pyrolysis mass spectrometry, and hydrolytic degradation.
    Additional Material: 6 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/macp.1976.021770614
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  • 9
    Electronic Resource
    Electronic Resource
    Das 13C-NMR-spektrum von alternierenden copolymeren aus äthylen und propylen (1976)
    New York : Wiley-Blackwell
    Die Makromolekulare Chemie 177 (1976), S. 2781-2785 
    Details
    ISSN: 0025-116X
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Description / Table of Contents: Alternating copolymers from ethylene and propylene were prepared by hydrogenation of cis-1,4-polyisoprene and isotactic trans-1,4-poly(1,3-pentadiene). In their 13C-NMR spectra meso and racemic diads were identified and assigned. The chemical shift of the meso diad appears to higher field.
    Notes: Alternierende Copolymere aus Äthylen und Propylen wurden durch Hydrierung von cis-1,4-Polyisopren und isotaktischem trans-1,4-Poly(1,3-pentadien) hergestellt. In ihren 13C-NMR-Spektren wurden die Signale für meso bzw. racemische Diaden gefunden und zugeordnet. Die Verschiebung der meso Diade erfolgt zu höherem Feld.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/macp.1976.021770919
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  • 10
    Electronic Resource
    Electronic Resource
    Pharmakologisch aktive polymere, 9.8. Mitt.: V. Hofmann, H. Ringsdorf, G. Muacevic, Makromol. Chem. 176, 1929 (1975). Synthese und untersuchung makromolekularer derivate des 1-adamantanamins (1976)
    New York : Wiley-Blackwell
    Die Makromolekulare Chemie 177 (1976), S. 741-746 
    Details
    ISSN: 0025-116X
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Description / Table of Contents: Two methacrylate monomers (3 and 6) containing 1-adamantylamino groups with different spacer groups were prepared. The new monomers were copolymerized with 2-methylsulfinylethyl methacrylate to yield water soluble products. The copolymers containing the 1-adamantylamino group and a model compound without adamantyl groups were tested in vitro and in vivo against influenca virus infections.
    Notes: Es wurden zwei Methacrylatmonomere (3 und 6) dargestellt, welche die 1-Adamantylamino-Gruppe mit verschiedenen Spacergruppen enthalten. Die neuen Monomeren wurden mit 2-Methylsulfinyläthylmethacrylat zu wasserlöslichen Produkten copolymerisiert. Die Copolymeren mit 1-Adamantylamino-Gruppen sowie eine Modellsubstanz ohne Adamantyl-Gruppe wurden in vitro und in vivo auf ihre Wirkung gegen InfluenzaViren untersucht.
    Additional Material: 2 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/macp.1976.021770313
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