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  • 1
    Electronic Resource
    Electronic Resource
    Neue Synthese und C-Markierung von Bilirubin-IX α (1972)
    Weinheim : Wiley-Blackwell
    Liebigs Annalen 758 (1972), S. 195-201 
    Details
    ISSN: 0075-4617
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: New Synthesis and 14C-Labelling of Bilirubin-IXαThe condensation of the Mannich base 6 with the α-unsubstituted oxodipyrromethene 2a in presence of dimethylacetylenedicarboxylate gives a mixture of bilirubin-IXα-dimethyl ester (7a) and bilirubin-XIIIα-dimethyl ester (8a) in the ratio of 3 : 1. Radioactive bilirubin-IXα (7, labelled by 14C) has been synthesized by this procedure.
    Notes: Durch Kondensation der Mannichbase 6 mit dem in α-Stellung unsubstituierten Oxodipyrromethen 2a unter Zusatz von Acetylendicarbonsäuredimethylester entstehen Bilirubin-IX α-dimethylester (7a) und Bilirubin-XIIIα-dimethylester (8a) im Verhältnis 3 : 1. Nach diesem Prinzip wurde radioaktives Bilirubin-IXα (7, 14C-markiert) dargestellt.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jlac.19727580122
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  • 2
    Electronic Resource
    Electronic Resource
    Gallenfarbstoffsynthesen, IV. Die Synthese optisch aktiver Urobiline (1970)
    Weinheim : Wiley-Blackwell
    Liebigs Annalen 736 (1970), S. 62-67 
    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 Bile Pigments, IV1). The Syntheses of Optically Active UrobilinsSyntheses of (+)-urobilin IIIα, (+)-urobilin XIIIα and (+)- and (-)-urobilin IXα are described starting from optically active oxodipyrromethanes.
    Notes: Die Darstellung von (+)-Urobilin IIIα, (+)-Urobilin XIIIα sowie (+)- und (-)-Urobilin IXα aus optisch aktiven Oxodipyrromethanen wird beschrieben.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jlac.19707360106
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