摘要:
The first total syntheses of 9-epoxyfalcarindiol la and its diastereomer lb have been achieved. Central to our approach were the Zn-cyclopropane-based amino alcohol catalyzed enantioselective alkynylation of acrolein, the diastereoselective addition of a diynic ester to an epoxy aldehyde, and the asymmetric Sharpless epoxidation of allylic alcohol catalyzed with L-(+)-diethyl tartrate and Ti(OiPr)(4). (C) 2017 Elsevier Ltd. All rights reserved.