Synthesis of the Tricyclic Core of Labiatin A and Australin A
作者:J. Stephen Clark、David Vignard、Andrew Parkin
DOI:10.1021/ol201498g
日期:2011.8.5
diterpene natural products labiatin A and australin A has been accomplished. The key ring-forming transformation is a cascade reaction comprising generation of a copper carbenoid from a diazo ketone, intramolecular reaction of the carbenoid with a cyclic ether, and rearrangement of the resulting free oxonium ylide or its metal-bound equivalent with ring expansion of the original cyclic ether.