Organocatalytic enantioselective synthesis of 1,3,5-polyols by means of iterative asymmetric epoxidation: their application to the total synthesis of polyrhacitide A
作者:Gullapalli Kumaraswamy、Akula Narayana Murthy、Kadivendi Sadaiah
DOI:10.1016/j.tet.2012.02.055
日期:2012.4
We have developed a pragmatic route to the stereogenic skipped 1,3,5-polyols. The strategic transformation includes an organocatalytic enantioselective asymmetric epoxidation, which is either syn- or anti-selective as genesis of chirality and successive SN2 opening reaction by an appropriate functionalized nucleophile, followed by hydroboration/oxidation to generate stereoisomers in good yield. The
我们已经开发出一种实用的途径,以产生立体感的1,3,5-多元醇。战略转型包括有机催化对映选择性不对称环氧化,其或者顺式-或反-选择性为手性和连续S的成因Ñ通过适当的亲核试剂官能化2开口反应,接着进行硼氢化/氧化以产生良好产率的立体异构体。在该方法过程中生成的关键中间体被用于多卤化物A的全合成中。