作者:Sanjay S. Palimkar、Jun’ichi Uenishi
DOI:10.1021/ol101753y
日期:2010.9.17
A convergent total synthesis of (-)-apicularen A, a highly cytostatic 12-membered macrolide, has been accomplished. The key steps include assembling of iodoalkene 8 and aldehyde 9 by Nozaki-Hiyama-Kishi (NHK) coupling, stereospecific construction of 2,6-trans-disubstituted dihydropyran by Pd(II)-catalyzed 1,3-chirality transfer reaction, and Yamaguchi macrolactonization. Introduction of the (2Z,42)-heptadienamide moiety in the side chain by an efficient Cu(I)-mediated coupling completed the total synthesis.