An enantioselective synthesis of the CGRP antagonist BMS-846372, amenable to large scale preparation, is presented. This new synthesis showcases a chemo- and enantioselective reduction of a cyclohepta[b]pyridine-5,9-dione as well as a Pd-catalyzed alpha-arylation reaction to form the key carbon-carbon bond and set the absolute and relative stereochemistry.
机构:
Univ Nova Lisboa, Fac Sci & Technol, Dept Chem, P-2829516 Quinta Da Torre, Caparica, PortugalUniv Nova Lisboa, Fac Sci & Technol, Dept Chem, P-2829516 Quinta Da Torre, Caparica, Portugal