The synthesis of potential precursors of ketones, which could be used to obtain camptothecin analogs, is described. Noteworthy is the difference of reactivity between indolizinone and pyrrolidinoquinazolinone heterocycle.
Nickel‐Catalyzed Intramolecular Dual Annulation Reaction of Alkyl Nitrile‐Containing 1,2,3‐Benzotriazin‐4(3H)‐ones: A Pathway to Access Diversely Polycyclic Quinazolinone Alkaloids
作者:Vijaykumar H. Thorat、Yong‐Ran Huang、Hao‐Yu Chao、Jen‐Chieh Hsieh
DOI:10.1002/adsc.202301512
日期:2024.5.21
Herein, we report a nickel‐catalyzed intramolecular dual annulation reaction of alkyl nitrile‐containing 1,2,3‐benzotriazine‐4(3H)‐ones to synthesize polycyclic quinazolinones. This catalytic reaction can construct the core structure of polycyclic quinazolinone alkaloids; therefore, we also apply this reaction as the critical step to access fifteen relevant alkaloids to demonstrate efficacy.