作者:Kannan Vaithegi、Kavirayani R. Prasad
DOI:10.1016/j.tet.2020.131625
日期:2020.11
Enantioselective total synthesis of 2,4,6-trisubstituted pyran natural product diospongin A is accomplished from benzaldehyde in 5 steps. Key reaction in the synthesis is the addition of a silyl enol ether derived from vinylogous aryl methyl ketone to chiral β-alkoxy aldehyde and subsequent oxa-Michael addition.
2,4,6-三取代的吡喃天然产物双皂苷A的对映选择性全合成是由苯甲醛分5步完成的。合成中的关键反应是将衍生自乙烯基芳基甲基酮的甲硅烷基烯醇醚添加到手性β-烷氧基醛中,然后再添加oxa- Michael。