Three advanced intermediates corresponding to the carbon skeleton of the hennoxazoles have been prepared. Central to the strategy is the synthesis of the oxazoles prior to coupling with the other fragments and a dithiane addition to allow for the generation of diastereomers of the natural product.
已经合成了三个与氮杂环的碳骨架相应的高级中间体。该策略的核心是在与其他片段偶联之前合成氧杂环,并进行二
硫杂烷的加成,以产生
天然产物的非对映体。