Enantio- and Diastereoselective Synthesis of <i>N</i>-Acetyl Dihydrotetrafibricin Methyl Ester
作者:Philippe Nuhant、William R. Roush
DOI:10.1021/ja401918r
日期:2013.4.10
methyl ester (34) is described. The synthesis features three enantioselective double allylboration reactions and an intramolecular hydrosilylation/Fleming-Tamao oxidation sequence to establish seven of the hydroxy-bearing stereocenters of 34. Especially noteworthy is the fragment-assembly double allyboration reaction of 2 and 7 using reagent 3, which provides the advanced intermediate 6 with >20:1 diastereoselectivity
描述了 N-乙酰基二氢四纤素甲酯 (34) 的高度非对映选择性合成。该合成具有三个对映选择性双烯丙基硼化反应和一个分子内氢化硅烷化/Fleming-Tamao 氧化序列,以建立 34 个带羟基的立体中心中的七个。特别值得注意的是使用试剂 3 的 2 和 7 的片段组装双烯丙基硼化反应,它提供具有 >20:1 非对映选择性的高级中间体 6。