The Biomimetic Synthesis and Final Structure Determination of (+)- and (−)-Centrolobine, Naturally Occurring Diarylheptanoid 2,6-cis-Disubstituted Tetrahydro-2H-pyrans
作者:Frank Rogano、Peter Rüedi
DOI:10.1002/hlca.201000096
日期:——
discussed before was solved, and the original assignment of the position of the MeO group in the natural centrolobines could be confirmed. As such the results are the experimental evidence for the corrections of long‐term inconsistencies we had postulated in an earlier review article.
对映体纯的标题化合物是通过它们的光学活性二芳基庚烷前体的氧化环化反应制备的。该方法被认为是通过中间体醌甲基化物的仿生苯酚氧化。保留了前体的绝对构型,并且过渡态采用了2,6取代基的空间上最有利的二甲基排列,以提供顺式已配置的天然产品。结果清楚地确定了绝对构型以及与脊骨疗法数据的相关性。另外,解决了以前未曾讨论过的区域异构问题,并且可以确定MeO基团在天然中心叶青素中的位置的原始分配。因此,这些结果是纠正我们先前在一篇评论文章中假设的长期矛盾的实验证据。