作者:Xianwen Long、Yiming Ding、Jun Deng
DOI:10.1002/anie.201808481
日期:2018.10.22
The first total syntheses of the cytochalasan dimers asperchalasines A, D, E, and H have been accomplished. The key steps of the synthesis include a highly stereoselective intermolecular Diels–Alder reaction and a Horner–Wadsworth–Emmons macrocyclization to establish the key monomer aspochalasin B, and an intermolecular Diels–Alder reaction followed by a biomimetic oxidative heterodimerization by 5+2
已经完成了细胞chalasan二聚体的第一个总合成,即asperchalasines A,D,E和H。合成的关键步骤包括高度立体选择性的分子间Diels-Alder反应和Horner-Wadsworth-Emmons大环化以建立关键单体天冬氨酸蛋白酶B,分子间的Diels-Alder反应,然后通过5 + 2环加成仿生氧化异二聚提供Asperchalasine A.的合成努力为细胞松弛素二聚体的生物合成途径提供了见识,并使其生物学特性得以进一步研究。