[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%。