Synthesis of γ-Lactones via the Kowalski Homologation Reaction: Protecting-Group-Free Divergent Total Syntheses of Eupomatilones-2,5,6, and 3-<i>epi</i>-Eupomatilone-6
作者:Hosam Choi、Hanho Jang、Hyoungsu Kim、Kiyoun Lee
DOI:10.1021/acs.orglett.9b02848
日期:2019.10.4
A highly efficient synthesis of functionalized chiral γ-butyrolactone scaffolds has been described. The basis of the approach is the Kowalski ester homologation that is modified for our proposed transformation. The newly developed methodology combines a divergent synthetic strategy to permit a straightforward protecting-group-free asymmetric totalsyntheses of eupomatilones-2,5,6, and 3-epi-eupomatilone-6