作者:Ru-Cheng Liu、Jin-Hu Wei、Bang-Guo Wei、Guo-Qiang Lin
DOI:10.1016/j.tetasy.2008.12.014
日期:2008.12
An efficient asymmetric synthesis of the 2-hydroxymethyl 3,6-disubstituted piperidine alkaloid, (−)-deoxoprosophylline, is described. The key step of this route is the SmI2-mediated cross-coupling of chiral N-tert-butanesulfinyl imine 9 with aldehyde 11 to construct hydroxymethyl-β-amino alcohol 12b in 83% yield and high diastereoselectivity (>99%, de).
描述了2-羟甲基3,6-二取代哌啶生物碱(-)-脱氧代脯氨酸的有效不对称合成。这条路线的关键步骤是SmI 2介导的手性N-叔-丁亚磺酰亚胺亚胺9与醛11的交叉偶联,以83%的收率和高的非对映选择性(> 99%,de)构建羟甲基-β-氨基醇12b。