• Title/Summary/Keyword: Nigrolineabenzopyran A

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First Concise Synthesis of Biologically Interesting Nigrolineabenzopyran A, (±)-Blandachromene II, and (±)-Daurichromene D

  • Lee, Yong-Rok;Wang, Xue
    • Bulletin of the Korean Chemical Society
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    • v.28 no.11
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    • pp.2061-2064
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    • 2007
  • The first efficient synthesis of biologically interesting nigrolineabenzopyran A, blandachromene II, and daurichromene D with the benzopyran moiety has been accomplished using ethylenediamine diacetatecatalyzed reaction as a key step. The key step in these synthetic strategies involves the formation of benzopyran moiety via an electrocyclization reaction.