Diastereoselective synthesis of (2<i>R</i>,4<i>S</i>,5<i>S</i>)-(+)-5-(2,2-dichloroacetamido)- 4-(4-nitrophenyl)-2-aryl-1,3-dioxanes
作者:Liu Jun、Li Jun、Yang Shaorong、Li Hua、Hu Quanyuan、Xu Hansheng、Hu Xianming
DOI:10.1002/jhet.5570380236
日期:2001.3
(2R,4S,5S)-(+)-5-(2,2-Dichloroacetamido)-4-(4-nitrophenyl)-2-aryl-1,3-dioxanes 3–8 were synthesized with high diastereoselectivity and good yields. The structures of acetals were determined and the configurations were confirmed by 2D-NMR (NOESY) and X-ray crystallographic analysis.
(2 R,4 S,5 S)-(+)-5-(2,2-二氯乙酰胺基)-4-(4-硝基苯基)-2-芳基-1,3-二恶烷3-8的合成具有很高的非对映选择性和高产量。确定了缩醛的结构,并通过2D-NMR(NOESY)和X射线晶体学分析确认了构型。