A Practical Approach to 6H-Indol-6-ones Enables the Formal Synthesis of γ-Lycorane
作者:Rui Zhan、Li-Dong Shao、Yang Chen、Xin-Ting Hu、Xiao-Yan Xie、Dashan Li、Chun-Xia Zheng、You-Xi Zhang、Wen-Jing Wang
DOI:10.1055/a-1878-8597
日期:2023.1
We represented herein a two-step synthesis of 1-methyl-6H-indol-6-one which is an N-containing 6/5 fused bicyclic building blocks in Amaryllidaceae alkaloids. The key step featured is a ‘one-pot’ ozonolysis/reductive amination/cyclization of allylated cyclohexa-1,3-dione to give bicyclic compounds. Moreover, the formal total synthesis of natural product γ-lycorane could be achieved through a photo-promoted
我们在此展示了 1-methyl-6 H -indol-6-one的两步合成,它是石蒜科生物碱中含N的 6/5 稠合双环结构单元。关键步骤是烯丙基化 cyclohexa-1,3-dione 的“一锅”臭氧分解/还原胺化/环化,得到双环化合物。此外,天然产物 γ-lycorane 的正式全合成可以通过所得双环中间体的光促进环化/氧化级联反应来实现。