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  • 1970-1974  (2)
  • 1
    ISSN: 0018-019X
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: The wood of Anodendron paniculatum contains a large number of cardenolides; 14 of such compounds could be spottet in PC. and TLC. with Kedde reagent. Five of these (A, E 1, E 2, F, and G) could be isolated in crystalline form and two other ones (B 1 and B 2) as an amorphous mixture. A crystalline aromatic ketone (compound α) was obtained as by-product. The isolated cardenolides, named as anodendrosides A-G, were found to be glycosides containing unusual sugars. According to UV. and IR. spectra the genin portion in anodendroside E 1 (probably also in F and B 2) contains a cardenolide structure with saturated ring D and normal butenolide side-chain, while the anodendrosides A, E 2 and G (probably also B 1) contain an additional double bond at C-16. The four compounds for which IR. spectra could be taken (A, E 1, E 2, and G) possess a keto group.
    Additional Material: 15 Ill.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
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  • 2
    Electronic Resource
    Electronic Resource
    New York, NY : Wiley-Blackwell
    Helvetica Chimica Acta 56 (1973), S. 831-838 
    ISSN: 0018-019X
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Rhizomes of the recently rediscovered diploid fern Dryopteris caucasica were shown to contain the following phloroglucides: much filixic acid and para-aspidin, appreciable amounts of desaspidin and traces of flavaspidic acid, trisdesaspidin and aspidinol (artefact), i.e. exactly the same compounds as recently found in D. villarii ssp. villarii. These results are compatible with the hypothesis that either D. caucasica or a member of the D. villarii complex is the second, still unknown, ancestor of the allotetraploid D. filix-mas (L.) Schott. They also demonstrate the limitations of the chemical method which is quicker but less informative than the classical hybridisation procedures.
    Additional Material: 6 Ill.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
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