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  • 1
    ISSN: 0170-2041
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Nucleosides, XXX1). - Synthesis and Properties of 4-N-Benzoyl-O-(tert-butyldimethylsilyl)-cytidines**4-N-Benzoylcytidine (1) has been silylated by tert-butyldimethylsilyl chloride to give the possible mono- (5, 13, 14), di- (6, 7, 10), and tri-O-tert-butyldimethylsilyl ethers (8), the structures of which were characterized by chemical and spectrophotometric methods. 13C-NMR spectroscopy proved to be a simple and fast method for determining the silylation positions. The 2-O- and 3-O-tert-butyldimethylsilyl derivatives undergo base-catalyzed interconversion especially in alcohols.
    Notes: Ausgehend von 4-N-Benzoylcytidin (1) werden durch Silylierung mit tert-Butyldimethylsilylchlorid die möglichen Mono- (5, 13, 14), Di- (6, 7, 10), und Tri-O-tert-butyldimethylsilylether (8) dargestellt und die Strukturen auf chemischem und spektroskopischem Wege gesichert. 13C-NMR- Spektroskopie erlaubt eine einfache und rasche Festlegung der Silylierungspositionen. Die 2′-O-und 3′-O-tert-Butyldimethylsilyl-Derivate unterliegen einer gegenseitigen Isomerisierung, die insbesondere in Alkoholen beobachtet wird und basenkatalytisiert ist.
    Additional Material: 4 Tab.
    Type of Medium: Electronic Resource
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