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  • 1
    Electronic Resource
    Electronic Resource
    Topography of protein kinases and phosphoproteins in the plasma membrane of 3T3 cells (1984)
    New York, NY [u.a.] : Wiley-Blackwell
    Journal of Cellular Physiology 121 (1984), S. 357-367 
    Details
    ISSN: 0021-9541
    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Medicine
    Notes: The plasma membrane of 3T3 cells contains at least two different endogenous cyclic AMP-dependent protein kinase systems. One catalyzes the phosphorylation of endogenous protein substrates, i.e., PP24 and PP14, whereas the other catalyzes the phosphorylation of exogenous substrates. In this paper the topography of these cyclic AMP-dependent phosphorylation systems is described. The results show that the kinases which phosphorylate only exogenous substrates are primarily localized to the outer plasma membrane surface whereas the endogenous cyclic AMP-dependent protein kinase and its two endogenous substrates are localized to the cytoplasmic plasma membrane surface. The data also establish that neither the cytoplasmically orientated kinase nor its substrates has a transmembrane orientation even though factors acting on the outer plasma membrane can affect these proteins. This suggests that functional modulation of the cytoplasmically localized cyclic AMP-dependent phosphorylation system can be mediated by a transmembrane regulatory mechanism. The importance of determining the topography of such plasma membrane phosphorylation systems is emphasized by recent studies which show that neoplastic transformation can be mediated at least in part by protein kinases and/or phosphoproteins which are localized on the cytoplasmic surface of the plasma membrane.
    Additional Material: 6 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jcp.1041210213
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  • 2
    Electronic Resource
    Electronic Resource
    1H- und 13C-NMR-Untersuchungen an N-Acyl-imino-dithio-kohlensäure-S,S-dimethylestern (1983)
    New York, NY : Wiley-Blackwell
    Journal für Praktische Chemie/Chemiker-Zeitung 325 (1983), S. 1011-1015 
    Details
    ISSN: 0021-8383
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: 1H- and 13C-N.M.R. Investigations of N-Acyl-imino-dithiocarbonic-S,S-dimethylester
    Additional Material: 3 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/prac.19833250618
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  • 3
    Electronic Resource
    Electronic Resource
    Koordinationschemische Untersuchungen an Zinkdialkylen. XVI. Darstellung und Untersuchung von Dinorbornylzink-Verbindungen (1981)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 483 (1981), S. 145-152 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Investigations on the Coordination Chemistry of Zinc Dialkyls. XVI. Synthesis and Investigation of Dinorbornyl Zinc CompoundsBis(1-norbornyl)-, bis(2-norbornyl)-, and bis(7-norbornyl)zinc were synthesized from zink chloride and the corresponding Grignard compounds or norbornyl lithium compounds, respectively. The properties of these compounds differ remarkably. A detailed characterization took place by the mass, IR and 13C-NMR spectra and by investigation of the thermal decomposition and complex formation reactions.For comparison the bis(7-norbornenyl)zinc was prepared and characterized.
    Notes: Bis(1-norbornyl)-, Bis(2-norbornyl)- und Bis(7-norbornyl)-zinkNorbornyl = Bicyclo-[2.2.1]-heptyl, (Nor). wurden aus Zinkchlorid und den entsprechenden Grignardverbindungen bzw. Norbornyllithiumverbindungen synthetisiert. Die drei Substanzen unterscheiden sich beträchtlich in ihren Eigenschaften. Eine nähere Charakterisierung erfolgte durch Aufnahme und Auswertung der Massen-, IR- und 13C-NMR Spektren sowie durch Untersuchung des thermischen Zerfalls und von Komplexbildungsreaktionen.Für Vergleichszwecke wurde das Bis(7-norbornenyl)-zinkNorbornenyl = Bicyclo-[2.2.1]-hepten(2)-yl. dargestellt und untersucht.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19814831218
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  • 4
    Electronic Resource
    Electronic Resource
    5-Aza(Oxa, Thia)-2,8-dithia-1-stanna(II)-bicyclo[3.3.01,5]octane Intramolekular basenstabilisierte Stannylene (1983)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 502 (1983), S. 158-164 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: 5-Aza(oxa, thia)-2, 8-dithia-1-stanna(II)-bicyclo[3.3.01,5]octanes  -  Intramolecular Stabilized StannylenesBy the reaction of tin(II) butoxide with mercaptanes of the general type E(CH2—CH2SH)2 (E = N-t-Bu, NMe, O, S) at temperatures up to 50°C the 5-aza(oxa, thia)-2, 8-dithia-1-stanna(II)-bicyclo[3.3.01,5]octanes I - IV are obtained in high yields. The compounds are monomeric in solution. Contrary at higher reaction temperatures (80°C) the spiro-compounds of the type [E(CH2CH2S)2]2Sn (V - VIII) are formed. Some typical stannylene reactions of I - IV with BF3, Cr(CO)6, Br2, and PhS—SPh show the high reactivity of the compounds. Their structure is investigated by 1H, 13C, and 119Sn n.m.r., i.r., and Mössbauer spectroscopy.
    Notes: Durch Umsetzung von Zinn(II)-butoxid mit Mercaptanen des allgemeinen Typs E(CH2CH2SH)2 (E = N-t-Bu, NMe, O, S) werden bei Temperaturen bis 50°C die 5-Aza(Oxa, Thia)-2, 8-dithia-1-stanna(II)-bicyclo[3.3.01,5]octane in hohen Ausbeuten erhalten. Die Verbindungen sind monomer in Lösung. Bei höheren Reaktionstemperaturen (80°C) resultieren dagegen vorzugsweise die Spiroverbindungen des Typs [E(CH2CH2S)2]2Sn (V - VIII). Einige typische Stannylenreaktionen von I - IV mit BF3, Cr(CO)6, Br2 und PhS—SPh belegen die hohe Reaktivität der Verbindungen. Ihre Struktur wird durch 1H-, 13C-, 119Sn-NMR, IR- und Mößbauer-Spektren bewiesen.
    Additional Material: 4 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19835020720
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  • 5
    Electronic Resource
    Electronic Resource
    1,4,6-Trimethyl-5,5-dialkyldiptychdiazastannolidone - intramolekular pentakoordinierte Stannylderivate des N,N′,N″-TrimethyliminodiessigsäurediamidsProfessor J. F. Luzenko, Moskau, zum 70. Geburtstage am 8. Juni 1982 gewidmet. (1982)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 488 (1982), S. 45-48 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: 1,4,6-Trimethyl-5,5-dialkyldiptychdiazastannolidone - Intramolecular Pentacoordinated Stannyl Derivatives of N,N′,N″-Trimethyliminodiacetic Acid AmideThe title compounds were obtained by the reaction of dialkyltin dialkoxides with N,N′,N″-trimethyl iminodiacetic acid diamide in boiling toluene. The compounds are monomeric in benzene. Their structure was investigated by 1H, 13C and 119Sn n.m.r. measurements.
    Notes: Die Titelverbindungen werden durch die Reaktion von Dialkylzinndialkoxiden mit N,N′,N″-Trimethyliminodiessigsäurediamid in siedendem Toluen erhalten. Die Verbindungen sind monomer in Benzen. Ihre Struktur wird 1H-, 13C- und 119Sn-NMR-spektroskopisch aufgeklärt.
    Additional Material: 2 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19824880105
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  • 6
    Electronic Resource
    Electronic Resource
    31P- und 195Pt-NMR-Untersuchungen an Diplatin(I)-Komplexen des Typs [Pt2(μ-SPR2)2L2] (L = PR3, PhP(OPh)2, P(OPh)3, CNR)VIII. Mitteilung aus der Reihe Sekundäre Phosphinochalkogenide; VII. Mitteilung s. (1983)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 504 (1983), S. 117-127 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: 31P and 195Pt N.M.R. Investigations on Diplatinum (I) Complexes of the Type [Pt2(μ-SPR2)2L2] (L = PR3, PhP(OPh)2, P(OPh)3, CNR)31P-, 195Pt-chemical shifts and 195Pt-31P- resp. 31P-31P-coupling constants of a series of doubly bridged diplatinum(I) complexes are reported. 31P-coordination chemical shifts of the terminal ligands of complexes of type [Pt2(μ-SPR2)2(P′R3′)2] and some of the various coupling constants are strongly influenced by the π-acceptor strength of these ligands. J(195Pt-195Pt) is found to change the sign among the series of complexes investigated. Thermal singlett triplet exitation giving rise to the paramagnetism of these complexes observed by preliminary EPR-measurements and confirmed by EHT-calculations is deduced from the large values of 2J(P-P′) and 3J(P′P′) as well as the unusually high temperature dependence of some coupling constants and other NMR features. The chemical stability of the doubly bridged core, the coordination shifts of the bridging phosphorus atoms and EHT-calculations suggest a view of aromaticity of the [Pt2(μ-SPR2)2](M-M) unit of these complexes.
    Notes: Es werden 31P-, 195Pt-chemische Verschiebungen und 195Pt31P-Kopplungskonstanten einer Reihe von doppelt verbrückten Diplatin(I)-Komplexen mitgeteilt. 31P-koordinationschemische Verschiebungen der ternären Liganden von Komplexen des Typs [Pt2(μ-SPR2)2(P′R3′)2] und verschiedene Kopplungskonstanten werden stark von der π-Akzeptor-Stärke dieser Liganden beeinflußt. J(195P-195Pt) wird innerhalb der Reihe der untersuchten Komplexe mit wechselndem Vorzeichen gefunden. Aus den großen Werten von 2J(Pt-P′) und 3J(P′P′) sowie der ungewöhnlich starken Temperaturabhängigkeit einiger Kopplungskonstanten und anderen NMR-Eigenschaften wird auf Paramagnetismus dieser Komplexe aufgrund thermischer Singlett-Triplett-Anregung geschlossen, der in vorläufigen EPR-Messungen gefunden und durch EHT-Rechnungen gestützt wird. Die chemische Stabilität des doppelt verbrückten Kerns, die koordinationschemischen Verschiebungen der Brückenphosphoratome und EHT-Rechnungen weisen auf Aromatizität der [Pt2(μ-SPR2)2](M-M)-Einheit dieser Komplexe hin.
    Additional Material: 5 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19835040915
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  • 7
    Electronic Resource
    Electronic Resource
    Assoziationsverhalten von Stannatranen (1980)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 463 (1980), S. 123-131 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Association Behaviour of Strannatranes1-Alkylstannatranes (R = Me, Et, Bu, Phenyl) associate in unpolar solvents to relatively stable trimeric units. In aqueous solution 1-methylstannatran displays no autoassociation. 1-t-Butylstannatran, 1-o-tolylstannatran, and 1-alkylthiostannatranes are monomeric in all kinds of solvents. The association behaviour is characterized by molecular mass estimation and 1H-, 13C-, and 119Sn-NMR measurements.
    Notes: Es wird über einige neue Stannatrane und Thiostannatrane berichtet und gezeigt, daß die 1-Alkylstannatrane in unpolaren Lösungsmitteln zu relativ stabilen trimeren Einheiten assoziieren. In wäßriger Lösung zeigt 1-Methylstannatran keine Selbstassoziation. 1-t-Butylstannatran, 1-o-Tolylstannatran und 1-Alkylthiostannatrane sind in allen Lösungsmitteln monomer. Das Assoziationsverhalten wird durch Molekulargewichtsbestimmung und 1H-, 13C- und 119Sn-NMR-Messungen charakterisiert.
    Additional Material: 5 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19804630117
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  • 8
    Electronic Resource
    Electronic Resource
    Alkali-Phosphorverbindungen und ihr reaktives Verhalten. 79. NMR-Untersuchungen an Alkali-organophosphiden. I (1982)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 495 (1982), S. 115-119 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Alkali Phosphorus Compounds and their Reactivity. 79. NMR Investigations of Alkali Organophosphides. IThe 31C and 31P NMR spectra display a further separation of ion-pairs of alkali-organophosphides in THF solution after addition of cryptandes . An exception presents LiP(Ph)2, T1—13C-NMR measurements suggest a tetrameric structure in THF.
    Notes: Anhand der 13C- und 31P-NMR-Daten läßt sich zeigen, daß sich die Ionenpaare der Alkali-organophosphide in THF durch Zugabe von Kryptanden entsprechend weiter trennen lassen. Eine Ausnahme bildet LiP(Ph)2, das aufgrund von T1—13C-NMR-Messungen eine tetramere Struktur in THF aufweist.
    Additional Material: 2 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19824950111
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  • 9
    Electronic Resource
    Electronic Resource
    Intramolekulare Beweglichkeit von Phosphin-3η-allylpalladiumchlorid-Komplexen (1982)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 494 (1982), S. 189-195 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Intramolecular Mobility of Phosphin-3η-allyl Palladium Chloride ComplexesThe diastereomers of the complexes cis- and trans-2.3-diphenyl-1.3-oxaphosphorinan-3η-allyl palladiumchloride interchange. The activation parameters of the diastereomerization are estimated by line-shape analysis of the 31P - NMR signals.The exchange of allyl protons is described by 16 permutations involved in three graphes of the proposed seven modes of intramolecular movement.The cross-peaks in the 2D-exchange-1H - NMR spectrum display the exchanging protons.The results suggest a π-σ-transition together with a trigonal-bipyramidal arrangement of ligands in the transition state.
    Notes: Die Diastereomere der Komplexe cis- und trans-2,3-Diphenyl-1,3-oxa-phosphorinan-3η-allylpalladiumchlorid wandeln sich ineinander um. Die Aktivierungsparameter für diese Diastereomerisierung werden durch Linienformanalyse der 31P-NMR-Signale bestimmt.Der Positionswechsel der Allylprotonen wird durch 16 Permutationen beschrieben und in je drei Graphen den sieben vorgeschlagenen intramolekularen Bewegungsmechanismen zugeordnet. Aus den cross-peaks im 2D-Austausch-1H - NMR-Spektrum werden die miteinander im Positionswechsel befindlichen Protonen bestimmt.Die Ergebnisse sprechen für einen π-σ-Übergang mit trigonalbipyrymidaler Ligandenanordnung im Übergangszustand.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19824940124
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  • 10
    Electronic Resource
    Electronic Resource
    Darstellung und Eigenschaften von Trinorbornylbor-Verbindungen (1982)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 494 (1982), S. 144-150 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Synthesis and Properties of Trinorbornyl Boron CompoundsTris(1-norbornyl), Tris(2-norbornyl), and Tris(7-norbornyl) boron were synthesized from boron trifluoride diethylether and 1-norbornyl lithium or 2- and 7-norbornyl magnesium halides respectively. The compounds were characterized by the IR-, 13C-, 11B-NMR, and mass spectra. Furthermore 1-norbornyl lithium was isolated in the crystalline state and investigated in detail.
    Notes: Tris(1-norbornyl)-, Tris(2-norbornyl)- und Tris(7-norbornyl)bor1 wurden aus Bortrifluorid-diethylether und 1-Norbornyllithium bzw. 2- und 7-Norbornylmagnesiumhalogeniden synthetisiert. Eine nähere Charakterisierung erfolgte durch IR-, 13C- und 11B-NMR- sowie Massenspektren. 1-Norbornyllithium wurde in kristalliner Form erhalten; die Verbindung liegt in Benzol tetramer vor. Das 13C-NMR-Spektrum wird angegeben.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19824940119
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