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    Alkaloids from Ammocharis tinneana

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    Full Text Article (139.2Kb)
    Date
    1999
    Author
    Machocho, Alex K.
    Chhabra, S. C.
    Viladomat, F.
    Codina, C.
    Bastida, J.
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    Abstract
    Sixteen alkaloids have been isolated from fresh bulbs of Ammocharis tinneana (Amaryllidaceae), seven of which contain a 1,2β-epoxide group. 6α-Hydroxycrinamidine and 6α-hydroxyundulatine are reported here for the first time from a natural source. The structures and stereochemistry of these new alkaloids have been determined by physical and spectroscopic methods. 1H and 13C NMR spectra of flexinine, 1,2β-epoxyambelline and 11-O-acetyl-1,2β-epoxyambelline were completely assigned by means of 2D NMR techniques.
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    http://ir-library.ku.ac.ke/handle/123456789/7446
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    • RP-Department of Chemistry [423]

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