Enantioselective synthesis of the tetracyclic left-hand substructure of solanoeclepin A
Abstract
The synthesis of the enantiopure left-hand substructure of solanoeclepin A is described. Key steps include a chromium-mediated coupling of an oxabicyclic aldehyde with a β-ketoester-derived enol triflate to give a lactone, and a ring-closing metathesis reaction to form the seven-membered ring.