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  • Title: A new glycociamidine ring precursor: syntheses of (Z)-hymenialdisine, (Z)-2-debromohymenialdisine, and (+/-)-endo-2-debromohymenialdisine.
    Author: Papeo G, Posteri H, Borghi D, Varasi M.
    Journal: Org Lett; 2005 Dec 08; 7(25):5641-4. PubMed ID: 16321011.
    Abstract:
    [chemical reaction: see text]. The synthesis of the C11H5 marine sponge alkaloids, (Z)-hymenialdisine and (Z)-2-debromohymenialdisine, is described. A key step was the condensation between aldisine or its monobromo derivative and a new, efficient imidazolinone-based glycociamidine precursor. In the first case, the main product turned out to be the unprecedented (+/-)-endo-2-debromohymenialdisine.
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