Biomimetic Synthesis of Petuniasterone D via the Epoxy Ester−Ortho Ester Rearrangement
作者:Juan A. Faraldos、José-Luis Giner
DOI:10.1021/jo020068s
日期:2002.7.1
The sidechain of the insecticidal steroid petuniasterone D was synthesized by the biomimetic acid-catalyzed epoxy ester[bond]ortho ester rearrangement. In addition to the natural (22R,24R)-configuration of the sidechain ortho ester, compounds bearing the epimeric (22R,24S)-, (22S,24R)-, and (22S,24S)- [3.2.1]-bicyclic ortho esters were also produced by stereospecific rearrangement of the corresponding