Probing<i>o</i>-Diphenylphosphanyl Benzoate (<i>o</i>-DPPB)-Directed CC Bond Formation: Total Synthesis of Dictyostatin
作者:Sebastian Wünsch、Bernhard Breit
DOI:10.1002/chem.201406252
日期:2015.2.2
Herein, we report a robust totalsynthesis of dictyostatin. This polyketide natural product has attracted much attention because of its impressive antiproliferative activity against several human cancer‐cell lines. We accomplished its synthesis in a highly convergent manner from three fragments of equal complexity, which were prepared on multigram scale. The southern and northwestern subunits were
Gram-Scale Synthesis of Tomatidine, a Steroid Alkaloid with Antibiotic Properties Against Persistent Forms of <i>Staphylococcus aureus</i>
作者:Chad Normandin、François Malouin、Eric Marsault
DOI:10.1002/ejoc.202000051
日期:2020.5.14
The first synthesis of the Solanum alkaloid tomatidine was achieved in 24.9 % (longest linear sequence) through addition of a chiral organolithium fragment to a protected dinorcholanic lactone derived from commercially available diosgenin. This approach enabled the multigram synthesis with the goal to support further studies of its antibiotic properties against persistent forms of Staphylococcus aureus