基于硅缩醛的二炔底物的串联闭环复分解有效地进行以提供双环硅氧烷,其在去除硅系链后提供( E , Z) -1,3-二烯二醇。对该关键功能基序的进一步操作使得 (-)-cochleamycin A 的整个 C1-C19 线性骨架合成,这是 Roush 及其同事先前在 (+)-cochleamycin A 全合成中使用的后期中间体。
Improved Method for the Synthesis of β-Carbonyl Silyl-1,3-Dithianes by the Double Conjugate Addition of 1,3-Dithiol to Propargylic Carbonyl Compounds
作者:Sumit Mukherjee、Dimitra Kontokosta、Aditi Patil、Sivakumar Rallapalli、Daesung Lee
DOI:10.1021/jo901950e
日期:2009.12.4
Base-mediated double Conjugate addition of 1,3-propane dithiol to various silylated propargylic aldehydes and ketones allows for an efficient and scalable synthesis of beta-carbonyl silyl-1,3-dithianes.