Synthesis of optically active macrocycles consisting of helical chiral unit 1,12-dimethylbenzo[c]phenanthrene-5,8-dicarboxylate as a novel chiral building block

Authors:
  • MYMasahiko Yamaguchi
    Masahiko Yamaguchi
  • HOHitoshi Okubo
    Hitoshi Okubo
  • MHMasahiro Hirama
    Masahiro Hirama
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Abstract
Optically pure 1,12-dimethylbenzo[c]phenanthrene-5,8-dicarboxylic acid 1 is prepared in gram quantities, and a series of macrocycles consisting of the helical chiral unit are synthesized.