Synthesis of the C1−C12 Fragment of Iriomoteolide 1a by Sequential Catalytic Asymmetric Vinylogous Aldol Reactions
作者:Lijing Fang、Haoran Xue、Jiong Yang
DOI:10.1021/ol801940r
日期:2008.10.16
An efficient synthesis of the C1-C12 fragment of iriomoteolide 1a has been accomplished via sequential application of two catalytic, asymmetric, vinylogous aldol reactions: a catalytic vinylogous aldol reaction was used to enantioselectively introduce the C5-C8 segment, and a second catalytic vinylogous aldol reaction was used to install the remaining two stereocenters and a stereodefined alkene in
通过顺序应用两个催化的,不对称的乙烯基醇醛醇醛缩醛反应,可以实现有效合成异丁烯醇内酯1a的C1-C12片段:催化的乙烯基醇醛醇醛缩醛反应用于对映选择性地引入C5-C8链段,以及第二个催化的乙烯基醇醛醇醛缩合醛。一步反应用于安装其余两个立构中心和一个α,β-不饱和δ-内酯形式的立构烯烃。