ISSN:
0075-4617
Keywords:
Chemistry
;
Organic Chemistry
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
Description / Table of Contents:
Arthropod Protective Substances, XLV1). Elucidation of the Pygidial Bladders Colouring Substance from the Great Dizing Beetle (Dytiscus marginalis)4,5 mg pure marginalin from the defense pygidial bladders of 200 water beetles (D. marginalis) are isolated by chromatography and sublimation. Its structure is established as 4′,5-dihydroxy-benzalisocumaranone (4) on the basis of absorption-, and NMR spectroscopy, mass spectrometric analysis, hydrogenation, zinc dust distillation, and finally by synthesis.
Notes:
Aus den Pygidialwehrblasen von 200 Gelbrandkäfern (D. marginalis) werden durch Chromatographie und Sublimation 4.5 mg reines Marginalin isoliert, dessen Struktur durch absorptionsspektroskopische Methoden, massenspektrometrische Analyse, Hydrierung, Zinkstaub-Destillation und durch das Kernresonanzspektrum ermittelt wird. Marginalin ist, auch durch Synthese bestätigt, 4′.5-Dihydroxy-benzalisocumaranon (4).
Additional Material:
6 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/jlac.19707340112
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