Structure revision of lagunamide C to odoamide by total synthesis and biological evaluation
作者:Kaduki Hagimoto、Shunya Tojo、Toshiaki Teruya、Masahito Yoshida、Hideo Kigoshi
DOI:10.1016/j.tet.2024.133871
日期:2024.3
We have accomplished the total synthesis of the putative structure of lagunamide C and revised its structure to be the related analog odoamide. Asymmetric allylation of the chiral aldehyde, followed by olefin cross metathesis successfully provided the key aliphatic acid moiety, which was coupled with the peptide moiety by ynamide-mediated esterification leading to a cyclization precursor. Finally,
我们完成了Lagunamide C的推定结构的全合成,并将其结构修改为相关的类似物odoamide。手性醛的不对称烯丙基化,随后进行烯烃交叉复分解,成功地提供了关键的脂肪酸部分,该部分通过炔酰胺介导的酯化与肽部分偶联,形成环化前体。最后,大环的形成,随后去除 MTM 基团提供了假定的结构,其光谱与报道的拉古酰胺 C 的光谱不同。对报道的拉古酰胺 C 的 NMR 光谱的仔细重新分配导致拉古酰胺 C 为与奥多酰胺相同。