Total synthesis of strychnan and aspidospermatan alkaloids. 3. The total synthesis of (.+-.)-strychnine
作者:Martin E. Kuehne、Feng Xu
DOI:10.1021/jo00078a030
日期:1993.12
Reaction of N(b)-benzyl-2-[(methoxycarbonyl)methyl]tryptamine (3) with 4,4-dimethoxybut-2-en-1-al (6) provided, by a new condensation-electrocyclization reaction, the tetracyclic core 2 of strychnine (1). A 13-step elaboration of this compound gave a stereoselective synthesis of the racemic alkaloid.