Sulfoxide-Based Enantioselective Nazarov Cyclization: Divergent Syntheses of (+)-Isopaucifloral F, (+)-Quadrangularin A, and (+)-Pallidol
作者:Mei-Lin Tang、Peng Peng、Zheng-Yu Liu、Jian Zhang、Jian-Ming Yu、Xun Sun
DOI:10.1002/chem.201603664
日期:2016.10.4
The synthesis of enantiomerically pure 3‐aryl substituted indanones is developed using an enantioselective sulfoxide‐based Knoevenagel condensation/Nazarov cyclization procedure. After the reductive desulfonation of the methyl para‐tolyl sulfoxide‐containing chiral auxiliary under mild conditions, selected enantiomerically pure indanone is used for the divergent total syntheses of three resveratrol
对映体纯的3-芳基取代的茚满酮的合成是使用基于对映选择性亚砜的Knoevenagel缩合/ Nazarov环化程序进行的。在温和的条件下对甲基对甲苯基亚砜的手性助剂进行还原脱硫后,所选对映体纯的茚满酮用于三种白藜芦醇天然产物(+)-异古风化的F,(+)-四环素A和(+)-pallidol。