Enantioselective Synthesis of Euonyminol
Enantioselective Synthesis of Euonyminol
复制标题
卫矛醇的对映选择性合成
DOI:
10.1021/jacs.0c12998
复制
发表时间:
2021
影响因子:
15
通讯作者:
Herzon, Seth B.
中科院分区:
文献类型:
--
作者:
Tomanik, Martin;Xu, Zhi;Herzon, Seth B.
We describe an enantioselective total synthesis of the nonahydroxylated sesquiterpenoid euonyminol, the dihydro-β-agarofuran nucleus of the macrocyclic terpenoid alkaloids known as the cathedulins. Key features of the synthetic sequence include a highly diastereoselective intramolecular alkene oxyalkylation to establish the C10 quaternary center, an intramolecular aldol–dehydration to access the tricyclic scaffold of the target, a tandem lactonization–epoxide opening to form thetrans-C2–C3 vicinal diol residue, and a late-stage diastereoselective α-ketol rearrangement. The synthesis provides the first synthetic access to enantioenriched euonyminol and establishes a platform to synthesize the cathedulins.