Bugel,J.-P. et al., Bulletin de la Societe Chimique de France, 1972, p. 4371 - 4374
作者:Bugel,J.-P. et al.
DOI:——
日期:——
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