Studies toward the asymmetric synthesis of the ambewelamides

ORGN 665

Andrew S. Kleinke, kleinke@bu.edu, Department of Chemistry and Center for Chemical Methodology and Library Development, Boston University, 590 Commonwealth Ave, Boston, MA 02215 and John A. Porco Jr., porco@bu.edu, Department of Chemistry and Center for Chemical Methodology and Library Development (CMLD-BU), Boston University, 590 Commonwealth Avenue, Boston, MA 02215.
Studies toward the asymmetric syntheses of the epidithiodiketopiperazine-containing ambewelamides (scabrosin esters) will be described. Our synthesis utilizes chiral epoxyquinone monoketal building blocks generated from a tartrate-mediated nucleophilic asymmetric epoxidation. This presentation will review our efforts toward the development of novel methods for installation of the epidithiodiketopiperazine moiety as well as synthesis of advanced intermediates.