Total Synthesis of the Cardiotonic Steroid (+)-Cannogenol
S. Watanabe, Toshio Nishikawa, Atsuo Nakazaki
Abstract
The total synthesis of (+)-cannogenol, an aglycon common to various biologically important cardiotonic glycosides, has been achieved. Synthesis of the versatile intermediate involves Mizoroki-Heck and intramolecular Diels-Alder reactions from the enantiomerically pure CD-ring segment, newly prepared in a multidecagram scale this time. Total synthesis by the site-selective transformations of the versatile intermediate demonstrated the applicability of our synthetic approach.
Topics & Concepts
Total synthesisSteroidIntramolecular forceChemistryRing (chemistry)GlycosideStereochemistryCombinatorial chemistryOrganic chemistryBiochemistryHormoneMarine Sponges and Natural ProductsPhytochemistry and Bioactive CompoundsPhytochemical Studies and Bioactivities