One-Pot Preparation of Pyranoquinolinones by Ytterbium(III) Trifluoromethanesulfonate-Catalyzed Reactions: Efficient Synthesis of Flindersine, N-Methylflindersine, and Zanthosimuline Natural Products

摘要

Anefficient synthesis of pyranoquinolinones is achieved by ytterbium(III) triflate-catalyze reaction of 4-hydroxy-2-quinolones with a variety of #alpha#,#beta#-unsaturated aldehydes in moderate yields/