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  • 1980-1984  (2)
  • 1975-1979  (12)
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  • 1
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    Die biologische Bedeutung tierischer Gifte (1975)
    Springer
    Details
    Publication Date: 1975-01-01
    Print ISSN: 0028-1042
    Electronic ISSN: 1432-1904
    Topics: Biology , Chemistry and Pharmacology , Natural Sciences in General
    Published by Springer
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    PAPER CURRENT
  • 2
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    Unknown
    Synthesis of bivittoside C genine (1983)
    Elsevier
    Details
    Publication Date: 1983-01-01
    Print ISSN: 0040-4039
    Electronic ISSN: 1873-3581
    Topics: Chemistry and Pharmacology
    Published by Elsevier
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    PAPER CURRENT
  • 3
    Electronic Resource
    Electronic Resource
    Die biologische Bedeutung tierischer Gifte (1975)
    Springer
    Naturwissenschaften 62 (1975), S. 15-21 
    Details
    ISSN: 1432-1904
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology , Natural Sciences in General
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00594037
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    Handbook of marine science. Compounds from marine organisms. Vol. I. Von J. T. Baker und V. Murphy. CRC Press, Inc., Cleveland 1976. 1. Aufl., 226 S., geb. $ 29.95 (1977)
    Weinheim : Wiley-Blackwell
    Zeitschrift für die chemische Industrie 89 (1977), S. 844-845 
    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.19770891136
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  • 5
    Electronic Resource
    Electronic Resource
    Macrocyclische Trichothecene aus Baccharis coridifolia, I Miotoxin B und C, zwei neue macrocyclische Trichothecene aus Baccharis coridifolia DC (1984)
    Weinheim : Wiley-Blackwell
    Liebigs Annalen 1984 (1984), S. 1746-1754 
    Details
    ISSN: 0170-2041
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Macrocyclic Trichothecenes From Baccharis coridifolia, I. - Miotoxin B and C, two New Macrocyclic Trichothecenes From Baccharis coridifolia DCFrom extracts of the toxic Brazilian plant Baccharis coridifolia, two further macrocyclic trichothecenes were isolated. The structures of these compounds, named by us as miotoxin B and C, were elucidated by application of mass spectrometry and homo- and heteronuclear two-dimensional NMR techniques.
    Notes: Aus Extrakten der brasilianischen Giftpflanze Baccharis coridifolia wurden zwei macrocyclische Trichothecene isoliert. Die Strukturen der von uns als Miotoxin B und C bezeichneten Substanzen wurden durch Massenspektroskopie und durch homo- und heteronucleare zweidimensionale FT-NMR-Techniken aufgeklärt.
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jlac.198419841015
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  • 6
    Electronic Resource
    Electronic Resource
    Synthese und absolute Konfiguration von 1-(2-Bromethyl)-butylamin (1977)
    Weinheim : Wiley-Blackwell
    Liebigs Annalen 1977 (1977), S. 800-805 
    Details
    ISSN: 0075-4617
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Synthesis and Absolute Configuration of 1-(2-Bromoethyl)butylamine1-(2-Bromoethyl)butylamine (1) can be synthesized from ethyl butyrylacetate (5) and benzyl-amine, reduction of the resulting ethyl 3-benzylamino-2-hexenoate (6) to give 3-(benzylamino)-hexanol (4), and its reaction with hydrobromic acid. Separation of the antipodes is achieved at the stage of 4 with dibenzoyltartaric acid. The absolute configuration is deduced from that known for 3-aminohexanoic acid.
    Notes: 1-(2-Bromethyl)butylamin (1) läßt sich darstellen ausgehend von Butyrylessigsäure-ethylester (5) und Benzylamin, Reduktion des entstandenen 3-Benzylamino-2-hexensäure-ethylesters (6) zu 3-(Benzylamino)hexanol (4) und dessen Umsetzung mit Bromwasserstoffsäure. Die Spaltung in die Antipoden erfolgt auf der Stufe von 4 mit Dibenzoylweinsäure. Die absolute Konfiguration wird durch Anschluß an die bekannte der 3-Aminohexansäure bestimmt.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jlac.197719770510
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  • 7
    Electronic Resource
    Electronic Resource
    Synthese von Pseudouridin C (1978)
    Weinheim : Wiley-Blackwell
    Liebigs Annalen 1978 (1978), S. 427-430 
    Details
    ISSN: 0075-4617
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Synthesis of Pseudouridine CPseudouridine C [5-(β-D-ribofuranosyl)uracyl, 6b] has been prepared in an overall yield of 9% (based on 4-bromouracil) by a seven-step synthesis starting from D-ribose (as derivative 3) and 5-bromouracil. By addition, pseudouridines AF, SS (5a, b), and B (6a) are also obtained in a joint total yield of about 30%.
    Notes: Ausgehend von D-Ribose (als Derivat 3) und 5-Bromuracil wird über sieben Stufen PseudouridinC[5-(β-D-Ribofuranosyl)uracil, 6b] in einer Gesamtausbeute von 9% (bezogen auf 5-Bromuracil) dargestellt. Die Pseudouridine AF, AS (5a, b) und B (6a) werden daneben in einer Ausbeute von zusammen rund 30% erhalten.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jlac.197819780308
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  • 8
    Electronic Resource
    Electronic Resource
    (20S)-3β,20-Dihydroxy-5α-cholestan-18,20-lacton (1978)
    Weinheim : Wiley-Blackwell
    Liebigs Annalen 1978 (1978), S. 405-410 
    Details
    ISSN: 0075-4617
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: (20S)-3β,20-Dihydroxy-5α-cholestano-18,20-lactoneHypoiodite reaction of (20S)-20-hydroxy-5α-cholestan-3β-yl acetate (4) and subsequent Jones oxidation gives (20S)-3β-acetoxy-20-hydroxy-5α-cholestano-18,20-lactone (9b) in 18% yield. Furthermore 17β-iodo-5α-androstan-3β-yl acetate (7), 17α-iodo-5α-androstan-3β-yl acetate (6), and 20-oxo-5α-pregnan-3β-yl acetate (2b) are formed by fragmentation.
    Notes: Hypoioditreaktion von (20S)-20-Hydroxy-5α-cholestan-3β-yl-acetat (4) und nachfolgende Jones-Oxidation ergibt in einer Ausbeute von 18% (20S)-3β-Acetoxy-20-hydroxy-5α-cholestan-18,20-lacton (9b). Daneben entstehen durch Fragmentierung 17β-Iod-5α-androstan-3β-yl-acetat (7), 17α-Iod-5α-androstan-3β-yl-acetat (6) und 20-Oxo-5α-pregnan-3β-yl-acetat (2b).
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jlac.197819780305
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  • 9
    Electronic Resource
    Electronic Resource
    7β,11α-Dihydroxy-7,8,9,11-tetrahydroseychellogenin (1978)
    Weinheim : Wiley-Blackwell
    Liebigs Annalen 1978 (1978), S. 419-426 
    Details
    ISSN: 0075-4617
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Synthesis of Seychellogenine, I.  -  7β,11α-Dihydroxy-7,8,9,11-tetrahydroseychellogenine3β,7β,11α-Trihydroxy-4,4,14α-trimethyl-5α-pregnan-20-one (10) has been prepared from Ianosterol (1) by oxidative degradation of the side chain. Reaction with isohexylmagnesium bromide, acetylation of the secondary hydroxy groups, and photolysis of the 20-nitrite ester followed by Jones oxidation yields (20S)-3β,7β,11α-triacetoxy-20-hydroxy-5α-lanostano18,20-lactone (15), which can easily be converted into 7β,11α-dihydroxy-7,8,9,11-tetrahydroseychellogenine (16).
    Notes: Ausgehend von Lanosterin (1) wird durch oxidativen Abbau der Seitenkette 3β,7β,11α-Trihydroxy-4,4,14α-trimethyl-5α-pregnan-20-on (10) erhalten. Aus ihm wird durch Umsetzung mit Isohexylmagnesiumbromid, Acetylierung der sekundären Hydroxygruppen, Photolyse des 20-Nitritesters sowie nachfolgende Jones-Oxidation das (20S)-3β,7β,11α-Triacetoxy-20-hydroxy-5α-lanostan-18,20-lacton (15) gewonnen. Durch alkalische Verseifung läßt sich hieraus das 7β,11α-Dihydroxy-7,8,9,11-tetrahydroseychellogenin (16) darstellen.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jlac.197819780307
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  • 10
    Electronic Resource
    Electronic Resource
    Kristall- und Molekülstruktur von Oktahydrochinolin-2,5-dion (1975)
    Weinheim : Wiley-Blackwell
    Liebigs Annalen 1975 (1975), S. 225-229 
    Details
    ISSN: 0075-4617
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Crystal Structure and Molecular Structure of Octahydroquinoline-2,5-dioneThe crystal structure of octahydroquinoline-2,5-dione has been determined. The substance forms monoclinic crystals, space group P21/n with 4 molecules per unit cell; the lattice constants are: a = 7.597 ű0.003 8, b = 19.952 Å ± 0.008 Å, c = 5.489 Å, ± 0.0012 Å β = 81.69° ± 0.03°. The bond lengths in the chromophore indicate delocalisation of the double bonds. Calculated (SCF-LCAO-MO) and experimental data show good agreement.
    Notes: Die Kristallstruktur des Oktahydrochinolin-2,5-dions wurde bestimmt. Die Substanz kristallisiert monoklin in der Raumgruppe P21/n mit 4 Molekülen je Elementarzelle; die Gitterkonstanten sind a = 7.597 ű0.003 8, b = 19.952 Å ± 0.008 Å, c = 5.489 Å, ± 0.0012 Å β = 81.69° ± 0.03°. Die Bindungslängen im Chromophor weisen auf eine Delokalisierung der Doppelbindungen hin. Der Vergleich mit nach der SCF-LCAO-MO-Methode berechneten Bindungslängen steht im Einklang mit den experimentell gefundenen Werten.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jlac.197519750206
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