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  • Organic Chemistry  (793)
  • Humans
  • 1975-1979  (413)
  • 1955-1959  (495)
  • 1
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    Semliki forest virus: cause of a fatal case of human encephalitis (1979)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1979-03-16
    Description: A fatal case of human encephalitis has been observed for which our results indicate that Semliki Forest virus (SFV) was the etiologic agent. This is surprising in view of the fact that this virus, which has been widely studied, was believed to be one of the arboviruses nonpathogenic for man. Described are the clinical course, the virological examinations performed, and the histopathological findings in the central nervous system.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Willems, W R -- Kaluza, G -- Boschek, C B -- Bauer, H -- Hager, H -- Schutz, H J -- Feistner, H -- New York, N.Y. -- Science. 1979 Mar 16;203(4385):1127-9.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/424742" target="_blank"〉PubMed〈/a〉
    Keywords: Adult ; Antigens, Viral/analysis ; Arbovirus Infections/*etiology ; Encephalitis/*etiology/microbiology/pathology ; Female ; Humans ; Laboratory Infection/*etiology/microbiology ; *Semliki forest virus/immunology
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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  • 2
    Electronic Resource
    Electronic Resource
    Untersuchungen zur Sulfochlorierung von Paraffinen. V. Kinetische Untersuchungen über die Sulfochlorierung definierter Alkansulfochloride (1979)
    New York, NY : Wiley-Blackwell
    Journal für Praktische Chemie/Chemiker-Zeitung 321 (1979), S. 279-292 
    Details
    ISSN: 0021-8383
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Studies on Sulphochlorination of Paraffins. V. Kinetic Studies on the Sulphochlorination of Pure AlkanesulphochloridesThe mixtures of disulphochlorides formed by sulphochlorination of 1-alkanesulphochlorides C4—C9 may be analyzed gaschromatographically after transformation into the corresponding dimethylamides. The individual peaks could be identified in some cases with the aid of pure isomeric disulphochlorides, in other cases they were identified by analogy. The mixtures formed by sulphochlorination of the isomeric heptane sulphochlorides also could be analyzed after transformation into the dimethylamides; the identification of all peaks was possible by comparison of the mixtures obtained from different heptane sulphochlorides.For the alkane sulphochlorides studied the relative rates of sulphochlorination (with reference to n-octane) were determined, and therefore the relative reaction rates of the individual C—H-bonds with reference to one primary C—H-bond of n-octane could be calculated.The results show a geminal or vicinal disubstitution not to take place in noticeable amount. In position 3 or in greater distance the influence of the sulphochloride group on the reactivity of the C—H-bonds is not significant.
    Additional Material: 7 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/prac.19793210214
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  • 3
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    Evaluation of medical practices (1978)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1978-05-26
    Description: Evaluation of the efficacy of a medical intervention requires valid measurements of both its benefits and risks as compared to those of alternative forms of management. The requisite measurements are more difficult to make than this simple description suggests, and the accumulation of information is further inhibited by certain characteristics of our pattern of health care. These features include, for example, discontinuous care by a variety of unrelated providers, inadequate records, the autonomy of physicians as decision-makers, financial disincentives, ambiguities in what we mean by "experimental" and "accepted" forms of therapy, and failure to see continuing evaluation as a necessary component of the cost of providing good medical care. Although no single change will solve all the problems of evaluation, several offer promise of improving our ability to choose from among medical interventions those most likely to be useful.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Frazier, H S -- Hiatt, H H -- New York, N.Y. -- Science. 1978 May 26;200(4344):875-8.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/417402" target="_blank"〉PubMed〈/a〉
    Keywords: Cost-Benefit Analysis ; Defensive Medicine ; Delivery of Health Care/organization & administration ; Diagnostic Errors ; Ethics, Medical ; Humans ; Malpractice ; Medical Records ; *Quality of Health Care/economics ; Quality of Life ; Risk ; Therapeutics ; United States
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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  • 4
    Electronic Resource
    Electronic Resource
    Intramolekulare Chinhydrone. III. Farbe und Charge-transfer-Wechselwirkungen (1977)
    New York, NY : Wiley-Blackwell
    Journal für Praktische Chemie/Chemiker-Zeitung 319 (1977), S. 1015-1020 
    Details
    ISSN: 0021-8383
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Intramolecular Quinhydrones. III. Colour and Charge-transfer InteractionsThe intensive colour of the crystalline intramolecular quinhydrones 2a-o depends on the substitution and the unsymmetrical bridge-structure. The solutions are yellow coloured. According to the x-ray, i.r.- and u.v./vis-results there are for 2a-o inter, but no intramolecular CT-complexes.
    Notes: Die intensive Farbe der kristallinen intramolekularen Chinhydrone 2a-o hängt von der Kernsubstition und der unsymmetrischen Brückenstruktur ab. Lösungen sind nur gelb gefärbt. Nach den Ergebnissen röntgenkristallographischer, IR- und UV/VIS-spektroskopischer Untersuchungen bilden 2a-o inter-, aber keine intramolekularen CT-Komplexe.
    Additional Material: 2 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/prac.19773190625
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  • 5
    Electronic Resource
    Electronic Resource
    Zum elektrochemischen Verhalten von unsymmetrisch verbrückten Dichinonen (1976)
    New York, NY : Wiley-Blackwell
    Journal für Praktische Chemie/Chemiker-Zeitung 318 (1976), S. 635-642 
    Details
    ISSN: 0021-8383
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: On the Electrochemical Behaviour of Asymmetrically Bridged DiquinonesRedox potentials and pK-values of tetravalent asymmetrically bridged diquinones, quinhydrones, and hydroquinones are described and the influences of substituents on these characteristics are discussed.
    Notes: Es werden Redoxpotentiale und pK-Werte von tetravalenten, unsymmetrisch verbrückten Dichinonen, Chinhydronen und Hydrochinonen beschrieben und Substituenten-einflüsse auf diese Eigenschaften diskutiert.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/prac.19763180413
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  • 6
    Electronic Resource
    Electronic Resource
    Synthesen des 4-Amino-3-isoxazolidinons (Cycloserin) und einiger AnalogaHerrn Prof. Dr. T. Reichstein zum 60. Geburtstag gewidmet. (1957)
    New York, NY : Wiley-Blackwell
    Helvetica Chimica Acta 40 (1957), S. 1531-1552 
    Details
    ISSN: 0018-019X
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Stereospecific syntheses of cycloserine (D-4-amino-3-isoxazolidinone) are described. The same synthetic methods lead to some 5-substituted 4-amino-3-isoxazolidinones. The stereochemical relationship of these compounds to the parent amino acids is discussed.
    Additional Material: 4 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/hlca.19570400536
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  • 7
    Electronic Resource
    Electronic Resource
    Carotinoidsynthesen XVI. Stereoisomere 1,3,7,12,16,18-Hexaphenyl-octadeca-nonaene (1955)
    New York, NY : Wiley-Blackwell
    Helvetica Chimica Acta 38 (1955), S. 613-638 
    Details
    ISSN: 0018-019X
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Es wird eine Synthese des 1,3,7,12,16,18-Hexaphenyl-octadecadiin-(5,13)-trien-(1,9,17)-tetraols-(3,7,12,16) beschrieben. Aus dieser Verbindung wurden durch Wasserabspaltung 3 isomere Kohlenwasserstoffe VI, VII und VIII erhalten, die als Diacetylen-, Acetylen-kumulen- und Dikumulenderivate aufgefasst werden müssen. Die partielle Reduktion dieser Verbindungen führte zu 4 stereoisomeren 1,3,7,12,16,18-Hexaphenyl-octadeca-nonaenen, die sich durch ihre Spektren als behinderte cis-Formen zu erkennen gaben. Durch Einwirkung von Jod auf diese 4 cis-Formen wurden neben der ganztrans-Form noch eine grössere Zahl von cis-trans-isomeren 1,3,7,12,16,18-Hexaphenyl-octadeca-nonaenen erhalten, die sich durch ihre Absorptionsspektren, Schmelzpunkte und Lage im Chromatogramm charakterisieren lassen.
    Additional Material: 29 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/hlca.19550380308
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  • 8
    Electronic Resource
    Electronic Resource
    Synthese der sauren Peptidreste und der thermischen Spaltprodukte von Mutterkornalkaloiden. 41. Mitteilung über Mutterkornalkaloide (1956)
    New York, NY : Wiley-Blackwell
    Helvetica Chimica Acta 39 (1956), S. 1165-1171 
    Details
    ISSN: 0018-019X
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Es wird die Synthese von Pyruvoyl- und Dimethylpyruvoyl-L-phenylalanyl-L-prolin, der sauren Peptidreste, die bei der alkalischen Hydrolyse von Ergotamin bzw. Ergocristin anfallen, beschrieben. Durch Behandlung mit Essigsäureanhydrid gehen diese offenen sauren Peptide unter Abspaltung von Wasser und Umlagerung des Prolinrestes von der L- in die D-Form in zyklische, neutrale, gesättigte Verbindungen über, die mit den thermischen Spaltprodukten von Ergotamin bzw. Ergocristin identisch sind. Ferner wurden auch Di-methyl-pyruvoyl-L-leucyl-L-prolin und Dimethylpyruvoyl-L-valyl-L-prolin, die Peptidsauren aus der alkalischen Spaltung von Ergokryptin bzw. Ergocornin, zyklisiert und mit den Produkten der thermischen Spaltung dieser Alkaloide als identisch befunden.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/hlca.19560390420
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  • 9
    Electronic Resource
    Electronic Resource
    Cyclisch gekreuzt-konjugierte Bindungssysteme, 30. 13C-Analysen von Methylennorbornadienderivaten (1977)
    Weinheim : Wiley-Blackwell
    Liebigs Annalen 1977 (1977), S. 709-726 
    Details
    ISSN: 0075-4617
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Cyclic Cross-Conjugated Bond Systems, 30.  -  13C-Analyses of Methylenenorbornadiene DerivativesIn order to assess the homoconjugative relationship in the methylenenorbornadiene skeleton (3) the 13C-spectra of derivatives with alkyl-, aryl-, cyclopentadienylidene-, and cyano substituents in position 8 as well as with electron-withdrawing groups (CO2CH3, CN, CF3) on the endocyclic C=C-bonds have been analyzed. Comparison with saturated and cross-conjugated reference systems substantiates the low polarisability of the semicyclic C=C-bond in 3 and gives indications that increasing electron attraction in position 8 can intensify the homoconjugation, albeit only slightly.
    Notes: Zur Beurteilung der homokonjugativen Beziehung im Methylennorbornadien-Gerüst (3) werden die 13C-Spektren von Derivaten mit Alkyl-, Aryl-, Cyclopentadienyliden- und Cyanresten in Position 8 und zusätzlichen elektronenziehenden Resten (CO2CH3, CN, CF3) an den endocyclischen C=C-Bindungen analysiert. Der Vergleich mit verschiedenen gesättigten und gekreuzt-konjugierten Referenzsystemen belegt eine stark verringerte Polarisierbarkeit der semicyclischen C=C-Bindung in 3 und liefert Hinweise dafür, daß durch Verstärkung des Elektronenzugs in Position 8 die homokonjugative Wechselwirkung - wenn auch nur wenig - intensiviert werden kann.
    Additional Material: 4 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jlac.197719770418
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  • 10
    Electronic Resource
    Electronic Resource
    Further investigation on the structure of the arylhydrazones of α-cyanoketones: Electroreduction of 3-Phenyl-2,3-diketopropionitrile 2-Phenylhydrazone (1975)
    New York, NY : Wiley-Blackwell
    Journal für Praktische Chemie/Chemiker-Zeitung 317 (1975), S. 257-264 
    Details
    ISSN: 0021-8383
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: The polarographic behaviour of the benzenediazonium coupling product with ω-cyanoacetophenone in aqueous ethanolic solutions of varying pH indicates that it exists in the hydrazone form (1). A mechanism for the reduction process is suggested.
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/prac.19753170210
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