Bioinspired Total Synthesis and Stereochemical Revision of the Fungal Metabolite Pestalospirane B
作者:Sandhya Badrinarayanan、Christopher J. Squire、Jonathan Sperry、Margaret A. Brimble
DOI:10.1021/acs.orglett.7b01371
日期:2017.7.7
The total synthesis of both enantiomers of pestalospirane B, 2, has been achieved using a bioinspired tandem dimerization–spiroketalization reaction. Electronic circular dichroism (ECD) and X-ray analysis were used to revise the absolute stereochemistry of the natural product pestalospirane B from 3S, 3′S, 12R, 12′R to its enantiomer 3R, 3′R, 12S, 12′S.
使用生物启发的串联二聚化-螺缩酮化反应已实现了香豆螺烷B,2的两个对映异构体的总合成。电子圆二色性(ECD)和X射线分析被用来从3修改天然产物pestalospirane B的绝对立体化学小号,3'小号,12 - [R,12' - [R到其对映体3 - [R,3' - [R,12小号,12 'S。