Efficient and Scalable Asymmetric Total Synthesis of (−)-Emetine with Pharmaceutical Grade Quality; First Multigram Scale Synthesis
作者:Masatoshi Yamada、Kazuki Azuma、Iori Takizawa、Yuki Ejima、Mitsuhisa Yamano、Kimio Satoh、Takayuki Doi、Hirofumi Ueda、Hidetoshi Tokuyama
DOI:10.1021/acs.oprd.2c00355
日期:2023.2.17
A scalable asymmetric total synthesis of (−)-emetine, a natural product alkaloid from ipecac species and one of the main active ingredients in ipecac syrup used in emetics, has been accomplished. The synthetic route featured a total of 13 steps of highly efficient chemical reactions, including catalytic asymmetric allylation and an industrial deoxygenation of an aliphatic compound, which obviated the
(−)-emetine 的可扩展不对称全合成已经完成,emetine 是一种来自吐根物种的天然产物生物碱,也是催吐剂中使用的吐根糖浆中的主要活性成分之一。该合成路线共有 13 个高效化学反应步骤,包括催化不对称烯丙基化和脂肪族化合物的工业脱氧,无需任何色谱纯化。(−)-Emetine·2HCl 以 12% 的总收率和超过 93.2% 的 HPLC 纯度获得。该合成很容易放大到 237.1 克,应该可以为正在进行的药物开发生产更大数量的化合物,而该化合物目前以天然吐根糖浆的形式提供用于临床。