4.7 Article

Divergent reactivity of an indole glucosinolate yields Lossen or Neber rearrangement products: the phytoalexin rapalexin A or a unique β-D-glucopyranose fused heterocycle

Journal

CHEMICAL COMMUNICATIONS
Volume 52, Issue 12, Pages 2505-2508

Publisher

ROYAL SOC CHEMISTRY
DOI: 10.1039/c5cc09822j

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Funding

  1. Natural Sciences and Engineering Research Council of Canada (Discovery Research Grant)
  2. Canada Research Chairs Program
  3. Canada Foundation for Innovation
  4. University of Saskatchewan (graduate scholarship)

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Transformation of 1-t-Boc-4-methoxyindole-3-glucosinolate under acidic conditions yielded the potent phytoalexin rapalexin A, providing its first biomimetic synthesis via Lossen type rearrangement, while a novel 1-thioimidocarbonyl-beta-D-glucopyranose heterocyclic system was obtained under basic conditions via Neber type rearrangement.

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