Catalytic Asymmetric Assembly of Stereodefined Propionate Units: An Enantioselective Total Synthesis of (−)-Pironetin
作者:Xiaoqiang Shen、Andrew S. Wasmuth、Junping Zhao、Cheng Zhu、Scott G. Nelson
DOI:10.1021/ja061938g
日期:2006.6.1
diastereoselection in alkaloid-catalyzed acylhalide-aldehydecyclocondensation (AAC) reactions provides a strategy for realizing syn- or anti-selective propionate aldol additions from a common reaction manifold. Matched AAC homologation of enantioenriched aldehydes afford cis-disubstituted beta-lactones as surrogates for syn aldols; the mismatched AAC reactions provide anti-selective aldols in the form of trans-disubstituted