We describe the synthesis of a dimerization-ready flavan derivative 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.
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synthesis of dimerization-ready flavan unit intramolecular Pummerer/Friedel-Crafts cascade.
Org Biomol Chem
September 2022
Department of Chemistry, Tokyo Institute of Technology, 2-12-1, O-okayama, Meguro-ku, Tokyo 152-8551, Japan.
We describe the synthesis of a dimerization-ready flavan derivative 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.
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