Asymmetric Total Syntheses of Insulicolide A, 14-<i>O</i>-Acetylinsulicolide A, 6β,9α-Dihydroxy-14-<i>p</i>-nitrobenzoylcinnamolide, and 7α,14-Dihydroxy-6β-<i>p</i>-nitrobenzoylconfertifolin
作者:Yang Lai、Nan Zhang、Yi Zhang、Jia-Hua Chen、Zhen Yang
DOI:10.1021/acs.orglett.8b01733
日期:2018.7.20
Asymmetric total syntheses of insulicolide A, 14-O-acetylinsulicolide A, 6β,9α-dihydroxy-14-p-nitrobenzoyl cinnamolide, and 7α,14-dihydroxy-6β-p-nitrobenzoylconfertifolin have been achieved for the first time. The key steps in the synthesis include: (1) an iridium-catalyzed enantioselective polyene cyclization to construct the drimane core bearing two all-carbon quaternary chiral centers at C4 and
insulicolide A的不对称全合成,14- ö -acetylinsulicolide A,6β,9α二羟基-14- p -硝基苯甲酰cinnamolide,和7α,14-二羟基- 6β- p -nitrobenzoylconfertifolin首次已经实现。合成的关键步骤包括:(1)铱催化的对映选择性多烯环化,以构建在C4和C10处带有两个全碳四级手性中心的drimane核,以及(2)苯酚环的级联臭氧分解以形成内酯。靶分子的片段。