Enantioselective synthesis of senecivernine, a 12-membered dilactonic pyrrolizidine alkaloid
作者:Zhi-Yu Liu、Lian-Yun Zhao
DOI:10.1016/s0040-4039(99)01058-8
日期:1999.7
The first synthesis of the title compound is described using a rigid molecule tricyclodecadienone 8 as the starting material and a retro-Diels-Alder reaction as the key step for the efficient synthesis of a masked seneciverinic acid 20; the target was prepared using the esterification of two hydroxy groups of (+)-retronecine 7 sequentially with compound 20 in a total of 10 steps and 18% overall yield
以刚性分子三环癸二烯酮8为起始原料,以逆狄尔斯-阿尔德反应为有效合成被掩盖的泛香精酸20的关键步骤,描述了标题化合物的首次合成。通过依次用化合物20将(+)-retronecine 7的两个羟基酯化,总共10个步骤,总收率18%来制备目标。