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  • Title: Synthesis of the tetracyclic ABCD ring systems of madangamines D-F.
    Author: Diaba F, Pujol-Grau C, Martínez-Laporta A, Fernández I, Bonjoch J.
    Journal: Org Lett; 2015 Feb 06; 17(3):568-71. PubMed ID: 25607252.
    Abstract:
    Synthesis of the tetracyclic cores of madangamines D-F was achieved, featuring a reductive radical process from an ethoxycarbonyldichloroacetamide to build the morphan nucleus, a Mitsunobu-type aminocyclization toward the common diazatricyclic intermediate, and ring-closing metathesis reactions for the macrocyclization step leading to the 13- to 15-membered rings.
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