Toward the Total Synthesis of Amphidinolide O: An Enantioselective Synthesis of C3-C8 Fragment
作者:Min-Ho Hwang、Duck-Hyung Lee
DOI:10.5012/bkcs.2013.34.7.1949
日期:2013.7.20
Wedescribe herein the enantioselective synthesis of C3-C8fragment of amphidinolide O (1).Retrosynthetic analysis was described in Figure 1. Amphi-dinolide O (1) might be assembled from two intermediates 2and 3 via esterification and ring closing metathesis as keysteps. Intermediate 4, a precursor to 3 as well as the targetmolecule in this paper, involves the γ,δ-unsaturated estermoiety along with α
我们在本文中描述了amphidinolide O (1) 的C3-C8 片段的对映选择性合成。逆合成分析在图1 中进行了描述。Amphi-dinolide O (1) 可以通过酯化和闭环复分解作为关键步骤由两个中间体2和3组装而成。中间体 4 是 3 的前体,也是本文的目标分子,涉及 γ,δ-不饱和酯部分以及具有反立体化学关系的 α,β-手性取代基。这些结构特征可以通过衍生自丙酸酯 5 的相应 (E)-烯醇化物的 Ireland-Claisen 重排获得。酯 5 由市售的