Total Synthesis of (−)-Bitungolide F and Determination of Its Absolute Stereochemistry
作者:Subhash Ghosh、Soma Uday Kumar、J. Shashidhar
DOI:10.1021/jo7023152
日期:2008.2.1
A highly convergent totalsynthesis of bitungolide F leading to the assignment of itsabsolutestereochemistry is described. The key steps include a Horner−Wadsworth−Emmons olefination to construct the C7−C8 bond, a Wittig reaction to introduce the conjugate E,E-olefinic moiety in the molecule, and finally a ring-closing metathesis reaction to construct the six-membered α,β-unsaturated δ-lactone of