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  • 1
    Call number: PIK M 311-92-0614
    Type of Medium: Monograph available for loan
    Pages: 386 S.
    ISBN: 3437402471
    Location: A 18 - must be ordered
    Branch Library: PIK Library
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  • 2
    Monograph available for loan
    Monograph available for loan
    Leipzig : J.A. Barth
    Call number: PIK M 311-97-0084
    Type of Medium: Monograph available for loan
    Pages: 851 S.
    ISBN: 3335003705
    Location: A 18 - must be ordered
    Branch Library: PIK Library
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  • 3
    Monograph available for loan
    Monograph available for loan
    Berlin : Dt. Verl. der Wissenschaften
    Call number: 7891
    Type of Medium: Monograph available for loan
    Pages: XI, 463 S. : graph. Darst.
    Language: German
    Location: Upper compact magazine
    Branch Library: GFZ Library
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  • 4
    Publication Date: 1995-10-01
    Print ISSN: 0167-9473
    Electronic ISSN: 1872-7352
    Topics: Mathematics
    Published by Elsevier
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  • 5
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 109 (1976), S. 3588-3597 
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Phosphorus-containing Carbohydrates, XVPerkow Reaction with α-Acyloxy Keto Sugars for the Synthesis of Enol Phosphates and their ReactionsPerkow reaction of 1,3,4,5,6-penta-O-acetyl-keto-D-fructose (2) with trimethyl phosphite yields the enol phosphates 1 and 3, the hydrolysis of which gives 1-deoxy-D-fructose (5) or 3-deoxy-D-erythro-hexulose (6), respectively. From 2,3,4,5,6-penta-O-acetyl-aldehydo-D-glucose (7) and trimethyl phosphite the enol phosphate 9 is obtained, which is hydrolysed to 2-deoxyglucose. By Perkow reaction of 3-keto-2-acyloxy(sulfonyloxy) and 2-keto-3-acyloxy(sulfonyloxy) compounds of the type methyl 4,6-O-benzylidene-α-D-hexopyranoside 11 and 17 enol phosphates 13 and 15 or mixtures of α-hydroxyphosphonates 12 and 18, resp., with 13 and 15. resp., are obtained depending on the leaving group. Alkaline hydrolysis of 13 and 15 yields the deoxyuloses 14 and 16. 31P- and 1H m.n.r. data are discussed.
    Notes: 1,3,4,5,6-Penta-O-acetyl-keto-D-fructose (2) reagiert mit Trimethylphosphit in einer Perkow-Reaktion zu den Enolphosphaten 1 und 3, deren Hydrolyse 1-Desoxy-D-fructose (5) bzw. 3-Des-oxy-D-erythro-hexulose (6) liefert. Aus 2,3,4,5,6-Penta-O-acetyl-aldehydo-D-glucose (7) entsteht mit Trimethyphosphit das Enolphosphat 9, dessen Hydrolyse zu 2-Desoxyglucose führt, Die Perkow-Reaktion von 3-Keto-2-acyloxy(sulfonyloxy)- und 2-Keto-3-acyloxy(sulfonyloxy)-Verbindungen vom Methyl-4-6-O-benzyliden-α-D-hexopyranosid-Typ 11 und 17 ergibt in Abhängigkeit von der Austrittsgruppe Enolphosphate 13 und 15 oder Gemische aus δ-Hydroxyphosphonanten 12 bzw. 18 mit 13 bzw. 15. Die alkalische Hydrolyse von 13 bzw. 15 führt zu den Desoxyulosen 14 bzw. 16. 31P- und 1H-NMR-Daten werden diskutiert.
    Type of Medium: Electronic Resource
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  • 6
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Liebigs Annalen 1985 (1985), S. 536-544 
    ISSN: 0170-2041
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Studies on the Hydrogenation of Saccharide Enol Phosphatesketo Sugar derivatives with α-acyloxy or α-sulfonyloxy leaving groups lead to formation of enol phosphates by Perkow reaction. On hydrogenation of the isomeric, acyclic enol phosphates 1 and 8 predominantly epimeric deoxy phosphates are obtained. Similarly, treatment of the pyranoid enol phosphate 10 gives the D-ribo derivative 9 exclusively, and the isomer 11 stereospecifically yields the 1,5-anhydro product 12 with D-arabino configuration. Reaction of the α-xylofuranoside 15 directly gives the phosphorylated furan 17. The corresponding β-compound 16 leads to formation of the enol phosphate 21, the hydrolysis and hydrogenation of which is studied.
    Notes: Aus keto-Zuckerderivaten mit α-Acyloxy-oder α-Sulfonyloxy-Austrittsgruppen lassen sich durch Perkow-Reaktion Enolphosphate gewinnen. Die isomeren, acyclischen Enolphosphate 1 und 8 werden vorwiegend zu epimeren Desoxyphosphaten hydriert. Während die Hydrierung des pyranoiden Enolphosphats 10 ausschließlich zum D-ribo-Derivat 9 führt, liefert das Isomer 11 stereospezifisch das 1,5-Anhydroprodukt 12 mit D-arabino-Konfiguration. Die Reaktion des α-Xylo-furanosids 15 ergibt direkt das phosphorylierte Furan 17. Die entsprechende β-Verbindung 16 liefert das Enolphosphat 21, dessen Hydrolyse und Hydrierung untersucht wird.
    Type of Medium: Electronic Resource
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