Studies towards an Enantioselective Total Synthesis of Sarain A: A Concise Asymmetric Construction of the Diazatricyclic Core
作者:Rui-Feng Yang、Pei-Qiang Huang
DOI:10.1002/chem.201001582
日期:2010.9.10
building block: A concise enantioselective synthesis of the diazatricyclic core of sarain A has been accomplished. The novel strategy relies upon the versatile chiral building block (R)‐1 (see scheme), and features a tandem Horner–Wadsworth–Emmons–aza‐Michael reaction, an intramolecular Michael reaction, and the diastereoconvergent formation of the third ring. Diazatricyclic core 2 possesses all of