Multicomponent Linchpin Coupling of Silyl Dithianes Employing an <i>N</i>-Ts Aziridine as the Second Electrophile: Synthesis of (−)-Indolizidine 223AB
作者:Amos B. Smith、Dae-Shik Kim
DOI:10.1021/ol049601b
日期:2004.4.1
[reaction: see text] An efficient, stereocontrolled assembly of the indolizidine alkaloid, (-)-indolizidine 223AB, exploiting a three-component linchpin coupling employing an N-Ts aziridine as the second electrophile, followed by a one-pot sequential construction of the indolizidine ring system, has been achieved. The longest linear sequence was 10 steps, proceeding in 10% overall yield.
[反应:见正文]吲哚并立生物碱(-)-吲哚并立223AB的高效立体控制组装,利用三组分Linchpin偶联,使用N-Ts氮丙啶作为第二亲电试剂,然后一锅顺序构建已经实现了吲哚并立定环系统。最长的线性序列为10个步骤,总产率为10%。