Total Synthesis of (±)??Glyflavanone by a Rigid Quaternary Ammonium Salt

YT Fang, CN Lin, HT Wu, YJ Lee

Index: Fang, Yu-Ting; Lin, Chia-Ning; Wu, Huan-Ting; Lee, Yean-Jang Journal of the Chinese Chemical Society, 2007 , vol. 54, # 3 p. 817 - 822

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Citation Number: 3

Abstract

Abstract Total synthesis of (±)-glyflavanones and glychalcones was accomplished starting from the known 1-(5-hydroxy-7-methoxy-2, 2-dimethyl-2H-chromen-6-yl) ethanone (6). A new approach to synthesis of flavanones, based on a high yielding N-benzylcinchoninium salt catalyzed chromane ring forming enantio-selective cyclization process, is described. Also, synthesis of (+)-glyflavanone 1, the natural enantiomer, was achieved through ...

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