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  • Inorganic Chemistry  (5)
  • Organic Chemistry  (4)
  • mammalian pheromones  (4)
  • 1
    ISSN: 1573-1561
    Keywords: Damaliscus dorcas ; mammalian semiochemicals ; mammalian pheromones ; exocrine secretions ; preorbital secretions ; chemical communication ; mass spectrometry
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract The 42 compounds identified in the pale yellow preorbital secretions of the bontebok, Damaliscus dorcas dorcas, and the blesbok, D. d. phillipsi, include acetic acid, 2-methylbutanoic acid, (E)-2-methyl-2-butenoic acid, benzoic acid, 4-hydroxybenzoic acid, saturated and unsaturated long-chain carboxylic acids, 4-hydroxybenzaldehyde, saturated and unsaturated, unbranched, long-chain alcohols and aldehydes, 2-heptanone, pentane, heptane, pepiritone, dimethylsulfone, isopropyl tetradecanoate, isopropyl hexadecanoate, hexadecyl acetate, δ-lactones, cholesterol, α-tocopherol, and squalene. Some qualitative and quantitative differences were found between the secretions of males and females of both subspecies.
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  • 2
    ISSN: 1573-1561
    Keywords: Damaliscus dorcas ; mammalian semiochemicals ; mammalian pheromones ; exocrine secretions ; interdigital secretions ; chemical communication ; mass spectrometry ; NMR
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract In addition to the nine compounds identified in the interdigital secretion of the bontebok, Damaliscus dorcas dorcas, in a previous study, 76 compounds belonging to different compound types, were identified in the interdigital secretions of the bontebok and the blesbok, D. d. phillipsi. These compounds include alkanes, alcohols, aldehydes, ketones, fatty acids, terpenoids, γ-lactones, an isopropyl ester, long-chain hydroxyesters, 2-substituted pyridines, phenols, steroids, and dimethylsulfone. No qualitative differences were found between secretions from the two sexes or from animals from different habitats. Although no attempt was made to correlate territorial behavior or other behavioral phenomena with the qualitative composition of interdigital secretions from individual animals, available information seems to indicate that quantitative differences probably do not have a major semiochemical function. Only two species of bacteria, Bacillus brevis and Planococcus citreus, were found in the interdigital pouches of male and female members of the two subspecies, regardless of the habitat of the animals. B. brevis synthesized, among other unidentified constituents, (Z)-3-penten-2-ol, 2-hexanone, 2-octanone, 2-nonanone, tetradecanoic acid, pentadecanoic acid, heptadecanoic acid, octadecanoic acid, (Z)-9-hexadecenoic acid, and isopropyl hexadecanoate in vitro, while P. citreus produced, among others, the γ-lactones dodecan-4-olide and (Z)-6-dodecen-4-olide, which is one of the major constituents of the interdigital secretions of both subspecies. Some components of the interdigital secretions are not present in the interdigital glandular tissue, and the possibility is discused that these compounds could be produced by microbiological activity in the interdigital pouch.
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  • 3
    Electronic Resource
    Electronic Resource
    Springer
    Journal of chemical ecology 25 (1999), S. 2099-2108 
    ISSN: 1573-1561
    Keywords: Raphicerus campestris ; mammalian semiochemicals ; mammalian pheromones ; exocrine secretion ; preorbital secretion ; territorial marking
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract In a study aimed primarily at qualitative comparison of the organic constituents of the preorbital secretion of the steenbok, Raphicerus campestris, with those previously found in the preorbital secretion of the grysbok, R. melanotis, 109 compounds were identified in the secretion of the steenbok. Although the secretions from the two antelope are similar in that they are mostly long-chain, unbranched, saturated and unsaturated alcohols and various derivatives of these alcohols, only 22 of the identified compounds are present in both secretions. This is a small percentage of the more than 260 compounds present in the secretion of the steenbok, which is much more complex than that of the grysbok.
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  • 4
    Electronic Resource
    Electronic Resource
    Springer
    Journal of chemical ecology 21 (1995), S. 1191-1215 
    ISSN: 1573-1561
    Keywords: Ourebia ourebi ; Bovidae ; mammalian semiochemicals ; mammalian pheromones ; exocrine secretion ; preorbital secretion ; dimethyl disulfide derivatization ; skipped dienes ; chemical-ionization mass spectrometry ; NMR
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract Using gas chromatography-mass spectrometry in conjunction with ancillary techniques such as chemical ionization with different reactant gases, determination of the position of double bonds by means of dimethyl disulfide derivatization, and finally gas chromatographic and mass spectrometric comparison with authentic synthetic material, 75 constituents were identified in the preorbital secretion of the male oribi,Ourebia ourebi. The secretion contains compounds with long-chain, unbranched structures similar to those found in many other preorbital secretions but with a finite volatility range, in contrast to the seemingly endlessly increasing chain lengths typical of other preorbital secretions.
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 447 (1978), S. 215-220 
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Reaction of Pertechnetate with CysteineThe kinetics of reaction of pertechnetate with cysteine and cysteine ethyl ester in acidic solution has been investigated radiochromatographically. Pertechnetate is reduced by thiols forming technetium(V) thiol complexes, in which co-ordination of amino acids to technetium is facilitated by thiol and amino groups. The reaction is first order in each reactant. The second order rate constant increase with increasing acidity of the solution. The rate-determining step in the reaction proved to be the nucleophilic attack of the thiol on the preformed pertechnetium acid.
    Notes: Die Kinetik der Reduktion von Pertechnetat durch Cystein und Cysteinäthylester in saurer wäßriger Lösung wurde untersucht. Die Reaktion verläuft über einen geschwindigkeitsbestimmenden nukleophilen Angriff der Mercaptoverbindung an das im vorgelagerten Gleichgewicht protonierte Pertechnetat und führt zur Bildung eines Tc(V)-Komplexes mit der Mercaptoverbindung.
    Additional Material: 1 Ill.
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  • 6
    Electronic Resource
    Electronic Resource
    New York, NY : Wiley-Blackwell
    Journal für Praktische Chemie/Chemiker-Zeitung 105 (1922), S. 31-38 
    ISSN: 0021-8383
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: 1. Die Versuche, einen zu Cleves [Pt(NH3)2,(C6H5NH2) ]SO4 isomeren Komplex, ausgehend von einem tr-[Pt(NH3)2X2], darzustellen, schlugen fehl, führten jedoch zum tr-[Pt(C6H5NH2)2J2],dessen Konstitution durch Gegenüberstellen mit cis-[Pt(C6H5NH2)2J2] aus Synthese und chemischen Verhalten beider gegenüber Pyridin und Äthylendiamin festgelegt wurde. Außerdem wurde das [PtenJ2] dargestellt und [Pten2]J2 auf fünf verschiedenen Wegen erreicht.
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  • 7
    Electronic Resource
    Electronic Resource
    New York, NY : Wiley-Blackwell
    Journal für Praktische Chemie/Chemiker-Zeitung 314 (1972), S. 646-648 
    ISSN: 0021-8383
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
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  • 8
    Electronic Resource
    Electronic Resource
    New York, NY : Wiley-Blackwell
    Journal für Praktische Chemie/Chemiker-Zeitung 313 (1971), S. 804-810 
    ISSN: 0021-8383
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Intermediär aus Natriumphenylacetylid mit Schwefel sowie Selen hergestelltes Phenyläthinylmercaptid 1 a bzw. Phenyläthinylselenid 1 b reagiert mit Phenylisothiocyanat zu 2-Phenylimino-4-phenyl-1, 3-dithiol bzw.-5-phenyl-1,3-thiaselenol. Analog reagiert Phenylisoselenocyanat mit 1 a und 1 b zu den Selenheterocyclen 2-Phenylimino-4-phenyl-1,3-thiaselenol und -1, 3-diselenol. Dagegen liefern Phenylisocyanat und Allylisothiocyanat mit 1 a und 1 b substituierte 2-Methylendithiole bzw. -selenole.
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  • 9
    Electronic Resource
    Electronic Resource
    New York, NY : Wiley-Blackwell
    Journal für Praktische Chemie/Chemiker-Zeitung 312 (1970), S. 776-779 
    ISSN: 0021-8383
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Enamine, die sich von Ketonen und Acetessigester ableiten, reagieren mit Schwefel und Cyanamid zu 2-Aminothiazolen.
    Additional Material: 1 Tab.
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  • 10
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 544 (1987), S. 167-180 
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Ligand-Exchange Reactions on TcNX4- Complexes (X = Cl, Br)Ligand exchange reactions on the nitridotechnetium(VI) compounds (Bu4N)TcNCl4 and (Bu4N)TcNBr4 are reported. The use of various organic ligands having different donor atom sets produces TcV nitrido complexes. The reaction of (Bu4N)TcNCl4 with (Bu4N)TcNBr4 is characterized by the formation of TcVI complex species with mixed Cl/Br coordination spheres. EPR detection of the mixed-ligand complexes results in a well-defined dependence of the EPR parameters on the composition of the first coordination sphere of the complexes.
    Notes: Es wird über Ligandenaustauschreaktionen an den Nitridotechnetium(VI)-Komplexen (Bu4N)TcNCl4 und (Bu4N)TcNBr4 berichtet. Dabei entstehen bei Verwendung organischer Liganden mit unterschiedlichen Donoratomen Nitridokomplexe des Technetiums(V). Bei der Reaktion von (Bu4N)TcNCl4 mit (Bu4N)TcNBr4 in unterschiedlichen Mischungsverhältnissen entstehen Komplexspezies des TcVI mit gemischter Cl/Br-Koordinationssphäre. Bei Untersuchungen mittels EPR-Spektroskopie konnte für die gebildeten Gemischtligandkomplexe eine definierte Abhängigkeit der Spektrenparameter von der Zusammensetzung der ersten Koordinationssphäre nachgewiesen werden.
    Additional Material: 5 Ill.
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