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  • Title: An expeditious asymmetric synthesis of the pentacyclic core of the cortistatins by an intramolecular (4+3) cycloaddition.
    Author: Liu LL, Chiu P.
    Journal: Chem Commun (Camb); 2011 Mar 28; 47(12):3416-7. PubMed ID: 21311803.
    Abstract:
    A concise, asymmetric synthesis of the pentacyclic framework of the cortistatins has been accomplished in 12 steps from commercially available starting materials, employing a highly diastereoselective intramolecular (4+3) cycloaddition of epoxy enolsilanes as the key step.
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