Protecting-Group Directed Stereoselective Intramolecular Nozaki-Hiyama-Kishi Reaction: A Concise and Efficient Total Synthesis of Amphidinolactone A
作者:Debendra K. Mohapatra、Pragna P. Das、Manas R. Pattanayak、Gaddamanugu Gayatri、G. Narahari Sastry、J. S. Yadav
DOI:10.1002/ejoc.201000565
日期:2010.9
A convergent totalsynthesis of amphidinolactone A, a cytotoxic macrolide from the cultured dinoflagellate Amphidinium sp., is described in 13 linear steps. The key step in the synthetic sequence involves an intramolecular Nozaki― Hiyama―Kishi (NHK) reaction for the construction of the 13-membered lactone ring by union of two fragments derived from a single chiral epoxide. The stereochemical outcome