Bates, Roderick W. Lu, Yongna A Formal Synthesis of Porantheridine and an Epimer A formal synthesis of porantheridine and a synthesis of its C6-epimer have been completed, employing silver-catalyzed allene cyclization to form a common <i>cis</i>-isoxazolidine intermediate and related <i>N</i>-acyl iminium ion intermediates for side-chain introduction. The stereochemistry of this step can be controlled by choice of the <i>N</i>-protection method. synthesis;Porantheridine;introduction;Formal Synthesis;cyclization;intermediate;allene;stereochemistry;method;porantheridine;choice;ion;EpimerA;iminium 2009-12-18
    https://acs.figshare.com/articles/journal_contribution/A_Formal_Synthesis_of_Porantheridine_and_an_Epimer/2805589
10.1021/jo9021925.s001