Application of a Domino Intramolecular Enyne Metathesis/Cross Metathesis Reaction to the Total Synthesis of (+)-8-<i>e</i><i>pi</i>-Xanthatin
作者:David A. Kummer、Jehrod B. Brenneman、Stephen F. Martin
DOI:10.1021/ol051711a
日期:2005.10.1
[reaction: see text] The first total synthesis of the novel sesquiterpene lactone (+)-8-epi-xanthatin (1) has been achieved starting from the commercially available ester 8. The synthesis features an asymmetric aldol reaction and palladium-catalyzed carbonylation/lactonization sequence leading to 4 and a domino ring-closingenynemetathesis/crossmetathesisreaction to afford 1.