De novo synthesis of dimerization-ready flavan unit via intramolecular Pummerer/Friedel-Crafts cascade.
Vipul V BetkekarKeisuke SuzukiKen OhmoriPublished in: Organic & biomolecular chemistry (2022)
We describe the de novo synthesis of a dimerization-ready flavan derivative via the Pummerer/Friedel-Crafts cascade. This method allowed facile access to oligomeric proanthocyanidin natural products. The total synthesis of procyanidin B4 was achieved by this strategy.