作者:Erica A. Tiong、Daniel Rivalti、Benjamin M. Williams、James L. Gleason
DOI:10.1002/anie.201208792
日期:2013.3.18
Distant relative: The configuration of the quaternary stereocenter in puraquinonic acid (see scheme, right) is defined by groups far removed from the point of asymmetry. The use of a bicyclic thioglycolate lactam to set the quaternary stereocenter at an early stage cuts the length of the synthesis of the natural product by nearly two thirds.
相对亲缘关系:嘌呤醌酸中的季立体中心构型(参见方案,右)由远离非对称点的基团定义。使用双环硫代乙醇酸酯内酰胺在早期将四级立体中心固定,将天然产物的合成时间缩短了近三分之二。