作者:Tetsuro Murokawa、Masaru Enomoto、Takaaki Teranishi、Yusuke Ogura、Shigefumi Kuwahara
DOI:10.1016/j.tetlet.2018.10.009
日期:2018.11
The first enantioselective total synthesis of JBIR-03 and asporyzin C, indole diterpenoids of fungal origin exhibiting a range of pharmacologically important biological activities, has been accomplished from a known bicyclic keto alcohol in 13 and 14 steps, respectively. A hydroxy-directed cyclopropanation and Pd(II)-mediated indole ring formation were exploited as the key steps to obtain a pivotal
JBIR-03和Asporyzin C(一种真菌来源的吲哚二萜类化合物,具有一系列药理上重要的生物活性)的首次对映选择性全合成已分别从已知的双环酮醇中分13步和14步完成。以羟基为导向的环丙烷化和Pd(II)介导的吲哚环的形成为关键步骤,以获取关键的五酰基中间体,该中间体通过交叉复分解通过链伸长转化为Asporyzin C,然后由Pd(J)转化为JBIR-03。 II)以非对映选择性的方式催化四氢呋喃环的形成。