Synthesis of the Spirochroman Core of Dihypoestoxide and Stereochemical Proposal for the Natural Product
作者:Maliha Uroos、Christopher J. Hayes
DOI:10.1021/ol102296t
日期:2010.11.19
The tricyclic spirochroman core of dihypoestoxide has been synthesized from geranoic acid in seven steps using a hetero-Diels−Alder cycloaddition as a key step, thus providing support for the proposed biosynthesis of the natural product. Furthermore, analysis of the 13C NMR data obtained for all four diastereoisomers of the synthetic spirochroman core has allowed us to propose a full stereochemical
二氢过氧化物的三环螺吡喃二氢核是由七叶酸从七个步骤合成的,其中杂Diels-Alder环加成反应为关键步骤,因此为拟议的天然产物生物合成提供了支持。此外,对合成螺环吡喃核的所有四个非对映异构体获得的13 C NMR数据的分析,使我们能够提出对二羟基雌二醇的完全立体化学分配。