Introduction of the Acetate Unit to the 2-Pyridinone Ring System and Its Application to the Synthesis of (20<i>S</i>)-Camptothecin DE Ring System
作者:Kou Hiroya、Kei Kawamoto、Takao Sakamoto
DOI:10.1055/s-2006-950433
日期:2006.9
The DE ring system of (20S)-camptothecin had been prepared from commercially available nicotinic acid in six steps utilizing the nucleophilic addition reaction of the silyl ketene acetal to the pyridinone ring as a key step.
(20S)-喜树碱的 DE 环系统是利用硅酮缩醛与吡啶酮环的亲核加成反应作为关键步骤,通过六个步骤从市售烟酸中制备出来的。