作者:Toshiya Nagai、Yinghua Wang、Koichi Hagiwara、Masayuki Inoue
DOI:10.1016/j.tetlet.2022.153747
日期:2022.5
Evoninic acid (3) is a component of a 14-membered bislactone of bioactive dihydro-β-agarofuran sesquiterpenoids. The unique structure of 3 is characterized by C2′,C3′-disubstituted pyridine and vicinal C7′S,C8′S-dimethyl groups. Here we report a new synthetic route to enantiopure 3. A chiral oxazolidinone controlled the stereochemical outcome of olefin hydrogenation, establishing the absolute configuration
Evoninic acid ( 3 ) 是具有生物活性的二氢-β-琼脂呋喃倍半萜的 14 元双内酯的成分。3的独特结构以C2',C3'-二取代吡啶和连位C7 'S ,C8'S-二甲基为特征。在这里,我们报告了一种新的对映体纯3合成路线。手性恶唑烷酮控制烯烃氢化的立体化学结果,建立了 C7' S -甲基的绝对构型。然后 C7' S-立体中心影响非对映选择性以安装 C8' S-甲基。