作者:Avedis Karadeolian、Michael A. Kerr
DOI:10.1021/jo101209y
日期:2010.10.15
diol present on the tetrahydrofuran ring. The total synthesis was completed by an indole oxidation and electrophilic aromatic substitution sequence to construct isatisine A acetonide, which was then carried forward to the antipode of the natural product. The absolute configuration of the natural enantiomer (−)-isatisine A was determined to be C2(S), C9(R), C10(S), C12(R), and C13(R).
(+)-艾迪西汀A的不对称全合成是从路易斯酸催化的同手性(S)-乙烯基环丙烷二酯和N-甲苯磺酰基吲哚-2-甲醛的环化反应以构建四氢呋喃环开始的。利用钯催化的氧化脱羧获得随后的二羟基化反应所需的二氢呋喃,以将存在的二醇安装在四氢呋喃环上。通过吲哚氧化和亲电芳族取代序列完成整体合成,以构建板蓝素A丙酮化物,然后将其继续用于天然产物的对映体。天然对映异构体(-)-艾地替宁A的绝对构型确定为C2(S),C9(R),C10(S),C12(R)和C13(R)。