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  • 1970-1974  (3)
  • 1970  (3)
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  • 1970-1974  (3)
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  • 1
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 103 (1970), S. 1792-1796 
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Glycosides of Amino Sugars, II. Synthesis of 2-amino-2-deoxy-α-D-glucopyranosidesThe synthesis of glycosides and disaccharides of 2-amino-2-deoxy-D-glucose has been explored using trifluoroacetyl as the N-blocking group. Because of its high tendency for neighboring group participation only β-D-glycosides were formed. The corresponding α-disaccharide could be obtained as the main product when employing 2.4-dinitrophenyl as the N-protecting group.
    Notes: Die N-Trifluoracetyl-Schutzgruppe wurde zur Synthese von Glykosiden und Disacchariden der 2-Amino-2-desoxy-D-glucose benutzt. Sie zeigte eine hohe Tendenz zur Nachbargruppen-beteiligung unter Bildung von -β-D-Glykosiden. Das entsprechende α-Disaccharid wurde als Hauptprodukt bei Verwendung der N-2.4-Dinitrophenyl-Schutzgruppe erhalten.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 103 (1970), S. 2424-2427 
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Di- and Polyamino Sugars, XV. XIV. Mitteil.: W. Meyer zu Reckendorf, Tetrahedron Letters [London] 1970, 287. Synthese der 2.4-Diamino-1.6-anhydro-2.4-dideoxy-D-talose. Synthesis of 2,4-Diamino-1,6-anhydro-2,4-dideoxy-D-taloseDehydrogenation of the amino reductone 1 with iodine yields a triulose which is isolated as the phenylhydrazone-phenylazo derivative 2. Spontaneous cyclization of 2 forms the 1.6-anhydro compound 3. On hydrogenation 2as well as 3are transformed into the title compound.
    Notes: Die durch Dehydrierung des Aminoreduktons 1 mit Jod entstehende Triulose wird als Bis-phenylhydrazon 2 isoliert, das die Konstitution eines Phenylhydrazon-benzolazo-Derivates besitzt. 2 cyclisiert leicht zur 1.6-Anhydro-Verbindung 3, die, wie auch 2, bei der katalytischen Hydrierung die Titelverbindung liefert.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 103 (1970), S. 2418-2423 
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Elimination Reactions of a Pyranose Enolacetate. A Pyranose Amino ReductoneThe α-azidoketone 1 is easily transformed either directly or via the enolacetate 2 into the vinylogous amide 4 which on acid treatment yields 8. 4 and 8 show the typical reactions of reductones. On reduction 8 yields derivatives of 2-amino-2-deoxy-D-allose only.
    Notes: Das α-Azido-keton 1 geht leicht direkt oder über das Enolacetat 2 in das vinyloge Säureamid 4 über, Aus dem mit Säure 8 entsteht. 4 und 8 zeigen die typischen Reaktionen von Reduktonen. Bei der Reduktion gibt 8 ausschließlich Derivate der 2-Amino-2-desoxy-D-allose.
    Type of Medium: Electronic Resource
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