An architectonic macrolide library based on a C2-symmetric macrodiolide toward pharmaceutical compositions

Abstract A stereodivergent approach to creation of a specific 14-membered macrolide library is described. We designed a new 14-membered macrolide template possessing 10 sterogenic centers, and established a new library of fully-synthesized 14-membered ring compounds. The designed macrodiolides were synthesized through a convergent approach using an Evans aldol reaction, Keck esterification, and Yamaguchi macrolactonization, or Mitsunobu macrolactonization, as key steps. Moreover, introduction of an aminosugar to a macrodiolide aglycone by Schmidt glycosylation also afforded a new macrodiolide. Comparison between the conformation analysis of the macrolides, which we designed, and NMR analysis of the synthetic macrolides, indicated our stereoisomer library has significant diversity.