Synthesis of obscuraminol A using an organocatalyzed enantioselective Henry reaction
作者:Liudmila Filippova、Simen Antonsen、Yngve Stenstrøm、Trond Vidar Hansen
DOI:10.1016/j.tet.2016.08.070
日期:2016.10
The first synthesis of the polyunsaturated amino alcohol natural product obscuraminol A is reported. This stereoselective synthesis was based on an anti- and enantioselective organocatalyzed Henry reaction followed by a chemoselective SmI2-mediated reduction that affected only the nitro-group of the Henry product. These efforts yielded obscuraminol A where the configuration of the all-Z skipped double
报道了多不饱和氨基醇天然产物黑松香A的首次合成。该立体选择性合成是基于抗和对映选择性的有机催化的亨利反应,然后进行化学选择性的SmI 2介导的还原,该还原仅影响亨利产物的硝基。这些努力产生了obscuraminol A,其中从起始原料(即)保守了全Z跳过的双键的构型。(全-Z)-二十碳五,8、11、14、17-戊烯酸的乙酯。我们的合成证实了已报道的黑松香醇A的结构。