Divergent Total Syntheses of Enmein‐Type Natural Products: (−)‐Enmein, (−)‐Isodocarpin, and (−)‐Sculponin R
作者:Saiyong Pan、Sicong Chen、Guangbin Dong
DOI:10.1002/anie.201803709
日期:2018.5.22
Divergent total syntheses of the enmein‐type natural products (−)‐enmein, (−)‐isodocarpin, and (−)‐sculponin R have been achieved in a concise fashion. Key features of the strategy include 1) an efficient early‐stage cage formation to control succeeding diastereoselectivity, 2) a one‐pot acylation/akylation/lactonization to construct the C‐ring and C8 quarternary center, 3) a reductive alkenylation
enmein型天然产物(-)-enmein,(-)-isodocarpin和(-)-sculponin R的不同总合成方法已经很简洁。该策略的主要特征包括:1)有效的早期笼形结构,以控制后续的非对映选择性; 2)单锅酰化/烷基化/内酯化,以构建C环和C8季中心; 3)还原性烯基化方法,以构建主要的D / E环和4)灵活的路线以允许对三种天然产物进行不同的合成。